CN216862430U - Push type double-liquid miniature pump head - Google Patents

Abstract

The utility model relates to a push type double-liquid miniature pump head, which is designed aiming at the technical problems of small application range, poor universality, poor sealing property and poor stability of the existing similar products. The micro pump head is characterized in that a raised inner liquid cavity is arranged at one end of the bottom of an inner bin large ring of the micro pump head, a bottleneck sleeve is arranged on the outer side of the other end of the top of the inner bin large ring, internal threads are arranged on the inner diameter of a bottleneck sleeve at the bottleneck sleeve of the inner bin large ring, a middle ring is arranged on the outer diameter of the bottleneck sleeve at the bottleneck sleeve of the inner bin large ring, a liquid inlet pipe in a head cap is sleeved with a valve rod assembled with a vacuum pump core, and the outer diameter of a blocked sealing ring is sealed with a cavity opening at the inner liquid cavity of the inner bin large ring; the inner plug of the vacuum pump core assembly and the pump body are protruded and buckled and fixed in a buckling groove in a top orifice of the sealing bayonet seat, the head cap drives the vacuum pump core assembly and the sealing bayonet seat to move downwards together, meanwhile, the plug at the bottom of the vacuum pump core assembly moves downwards and is limited in the buckling groove in the sealing bayonet seat, and the inner liquid cavity of the inner bin large ring can be opened.

Description

Push type double-liquid miniature pump head

Technical Field

The utility model relates to a miniature pump head of a container bottle, in particular to a push type double-liquid miniature pump head.

Background

The container bottle is a bottle container for containing liquids such as water, lotion, and is provided with a lotion pump (vacuum pump), a head cap, and the like at the mouth of the bottle for the convenience of use. Wherein some such container bottles are convenient for two kinds of materials mixture in the bottle, set up interior bottle structure in the bottle, use after the material in the material of being convenient for interior bottle mixes with the material in the bottle. Some of the prior container bottles are applied to a lotion bottle container with a straw, such as the lotion bottle container disclosed in chinese patent application No. 202110430610.5, application publication No. 2021.06.22, entitled "double-material lotion outlet container"; like the application number 201921395424.7 disclosed in the Chinese patent document, the granted notice date 2020.07.03, the utility model name of 'a double-cavity mixed liquid outlet bottle'; other such bottles are used in piston-equipped vacuum bottle containers, such as the Chinese patent application No. 201520299856.3, publication No. 2015.09.09, entitled "Dual Chamber mixing vacuum bottle"; further, as disclosed in the chinese patent publication, application No. 202021667654.7, granted publication No. 2021.06.01, the utility model entitled "a dual chamber vacuum mixing cosmetic packaging container". However, the pump heads of the product and similar products have poor universality, are difficult to be simultaneously applied to vacuum bottles and emulsion bottles, and have poor sealing property and stability.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a pressing type double-liquid miniature pump head in the field, so that the technical problems of small application range, poor universality, poor sealing performance and poor stability of the existing similar products are mainly solved. The purpose is realized by the following technical scheme.

The utility model provides a two liquid miniature pump heads of push type, the big circle bottom one end in interior storehouse of this miniature pump head is equipped with the interior sap cavity that exceeds, the top other end outside of the big circle in interior storehouse is equipped with the bottleneck cover, the bottleneck cover department cuff internal diameter of the big circle in interior storehouse is equipped with the internal thread, the ring channel at internal thread department bottleneck cover top is equipped with the gasket, the bottleneck cover department cuff external diameter of the big circle in interior storehouse is equipped with the center ring, feed liquor pipe in the head cap and the valve rod registrate of vacuum pump core assemblage, feed liquor hole department below access opening is equipped with the jam on the pump body of vacuum pump core assemblage, the bellied cuff trompil lock that makes progress in the middle of the jam is fixed in the feed liquor hole of the pump body, the sealing washer external diameter of jam and the interior sap cavity department orifice of the big circle in interior storehouse are sealed. The vacuum pump core assembly is characterized in that the inner plug of the vacuum pump core assembly is fixed in a buckling groove in a top orifice of a sealing bayonet seat in a protruding and buckling mode at the joint of a pump body, the outer diameter of the buckling groove of the sealing bayonet seat is provided with a stroke groove, the outer diameter of the top orifice of the stroke groove is provided with a raised limiting rib, the outer diameter of the sealing bayonet seat below the stroke groove is provided with a piston rib with two arc-shaped bulges, the stroke groove of the sealing bayonet seat is buckled and fixed in a top other end center hole of an inner bin large ring, and meanwhile, the piston rib of the sealing bayonet seat is respectively abutted and sealed with the inner wall of the inner liquid cavity of the inner bin large ring. The top circle mouth of circle is the toper in the aforesaid, and the cover mouth of dustcoat and the external diameter lock of big circle, dustcoat and bottle are integrative to be cylindrically, and the gasket structure sets up as required. Thereby when pressing the head cap, the head cap drives vacuum pump core assemblage and sealed bayonet socket base and moves down simultaneously together, and the jam of vacuum pump core assemblage bottom moves down to spacing in the interior buckle groove of sealed bayonet socket base, the interior sap cavity of interior storehouse large circle can be opened, above-mentioned operation process is because sealed bayonet socket base sets up in interior storehouse large circle, and difficult interior sap cavity with vacuum pump core assemblage and sealed bayonet socket upward movement seal interior storehouse large circle again after once opening of interior storehouse large circle.

The outer diameter of a sleeve opening at the other end of the bottleneck sleeve at the top of the inner bin large ring is provided with a raised fixing rib, the outer diameter of the bottleneck sleeve of the inner bin large ring above the fixing rib is provided with a gear ring smaller than the fixing rib, the inner diameter of a ring opening of the middle ring is provided with a fixing groove, and the inner wall of the middle ring above the fixing groove is provided with positioning ribs distributed at equal intervals; the fixed muscle lock of interior storehouse big circle is fixed in the fixed slot of well circle simultaneously, and the gear circle of interior storehouse big circle inserts the location muscle of being fixed in well circle. The structure is convenient for the middle ring and the inner bin large ring to be fixed and connected into a whole, and the integral assembly and filling are convenient.

The inner wall below the buckle groove of the sealed bayonet seat is provided with a raised pump body rib, the outer diameter of the pump body below the inner plug and the pump body joint of the vacuum pump core assembly is provided with a pump body groove, the inner plug and the pump body joint of the vacuum pump core assembly are raised and buckled and fixed in the buckle groove in the top orifice of the sealed bayonet seat, and simultaneously, the pump body rib of the sealed bayonet seat is matched and sealed with the pump body groove of the pump body. The structure is convenient for the assembly and the sealing between the vacuum pump core assembly and the sealing bayonet seat.

The vacuum pump core assembly is characterized in that a passage opening above an inlet hole in a pump body is provided with an elastic sleeve, a valve needle is buckled with a valve rod in the pump body, a small piston between one end of the valve rod and the valve needle is clamped and fixed, the outer diameter of the other end of the valve rod extending out of an inner plug is provided with a spring, one end of the spring is abutted against the bottom of an everting cavity of the outer diameter of the top of the valve rod, the other end of the spring is abutted against the bottom of a spring cavity of the top of the inner plug, and the everting cavity of the valve rod is arranged in the spring cavity of the inner plug. The above is an embodiment of the structure of the vacuum pump core assembly.

The outer side of the buckling position of the pump body of the sleeve opening and the vacuum pump core assembly of the plug is provided with an annular platform protruding upwards, the plug abuts against and is sealed with the inner liquid cavity position cavity opening of the inner bin large ring through the outer edge of the annular platform, and meanwhile, the outer side ring rib of the annular platform abuts against and is sealed with the inner liquid cavity position cavity opening inner diameter of the inner bin large ring. The structure is the structural embodiment of the plug, and the sealing between the plug and the inner bin large ring is further improved.

The internal thread of the inner bin large ring is connected with the external thread of the top bottle opening of the bottle body, a large piston is arranged in the bottle body, and a bottom cover is arranged at the bottom bottle opening of the bottle body. The above is an example of the application of the micro pump head in a vacuum flask.

The vacuum pump core assembly is replaced by the emulsion pump core assembly, the blockage is replaced by the suction pipe blockage, the suction pipe blockage is provided with a suction pipe, one side of a pump body of the emulsion pump core assembly is provided with an air inlet hole, the internal thread of the large ring of the inner bin is connected with the external thread of the top bottle opening of the plastic suction bottle, and the suction pipe extends into the plastic suction bottle. The above is an example of the application of the micro pump head in the lotion bottle.

The blockage of the suction pipe is replaced by a blockage, and the suction pipe is fixed on the blockage through a suction pipe sleeve. Therefore, the universality of the vacuum pump core assembly is further improved, and the vacuum pump core assembly can be used for a vacuum bottle without replacing the blockage of the vacuum pump core assembly.

When the head cap drives the vacuum pump core assembly to vertically move downwards, the vacuum pump core assembly drives the plug and the sealing bayonet seat to move downwards, the cavity opening at the bottom of the inner liquid cavity of the inner bin large ring is opened, the stroke groove of the sealing bayonet seat moves to the limiting rib, and the limiting rib of the sealing bayonet seat is limited in the central hole of the inner bin large ring. The specific method of using the micro pump head is described above.

The utility model has reasonable structural design, convenient assembly, use and carrying, good universality, sealing property and stability and simple operation of mixed opening; the push type double-liquid micro pump head is suitable for being used as a push type double-liquid micro pump head of a vacuum bottle and an emulsion bottle and is suitable for improving the structures of similar products.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structural view of the exploded state of fig. 1.

Fig. 3 is a perspective view of the assembled state of fig. 1.

FIG. 4 is a schematic cross-sectional view of an embodiment of the present invention applied to a vacuum bottle.

Fig. 5 is a cross-sectional structural view of the hybrid state operation of fig. 4.

FIG. 6 is a schematic cross-sectional view of a lotion bottle according to a second embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view of the improved structure of fig. 6 in a partially exploded state.

Figure number and name: 1. the vacuum pump comprises an outer cover, 2, a head cap, 3, a middle ring, 301, a positioning rib, 302, a fixing groove, 4, a vacuum pump core assembly, 401, a pump body, 402, an inner plug, 403, a valve rod, 404, a spring, 405, a small piston, 406 valve needle, 407, a spring sleeve, 5, a sealing bayonet seat, 501, a clamping groove, 502, a pump body rib, 503, a limiting rib, 504, a piston rib, 6, a gasket, 7, an inner bin large ring, 701, a central hole, 702, a gear ring, 703, a fixing rib, 8, an inner plug, 9, a bottle body, 10, a large piston, 11, a bottom cover, 12, an emulsion pump core assembly, 13, a straw plug, 14, a straw, 15, a plastic suction bottle, 16 and a straw sleeve.

Detailed Description

The construction and use of the utility model will now be further described with reference to the accompanying drawings. As shown in fig. 1-5, in the first embodiment, one end of the bottom of the inner large ring 7 of the inner chamber of the micro pump head is provided with a raised inner liquid cavity, the outer side of the other end of the top of the inner large ring is provided with a bottleneck sleeve, the inner diameter of the bottleneck sleeve at the bottleneck sleeve of the inner large ring is provided with an internal thread, the annular groove at the top of the bottleneck sleeve at the internal thread is provided with a gasket 6, the outer diameter of the bottleneck sleeve at the bottleneck sleeve of the inner large ring is provided with a middle ring 3, a liquid inlet pipe in the head cap 2 is sleeved with the valve rod 403 of the vacuum pump core assembly 4, a passage opening below the liquid inlet on the pump body 401 of the vacuum pump core assembly is provided with a plug 8, the opening of the sleeve opening protruding upwards in the middle of the plug is fastened to the liquid inlet of the pump body, and the outer diameter of the plug sealing ring is sealed with the cavity opening at the inner liquid cavity of the inner large ring. The protruding buckle groove 501 in the top drill way of sealed bayonet socket 5 is fixed in to interior stopper 402 and the pump body 401 junction of vacuum pump core assemblage, the buckle groove department external diameter of sealed bayonet socket is equipped with the stroke groove, the top drill way external diameter of stroke groove is equipped with bellied spacing muscle 503, the sealed bayonet socket external diameter of stroke groove below is equipped with the bellied piston muscle 504 of both ends arc, the stroke groove lock of sealed bayonet socket is fixed in the top other end centre bore 701 of interior storehouse large circle simultaneously, the piston muscle of sealed bayonet socket offsets sealedly with the interior sap cavity department inner wall of interior storehouse large circle respectively. The top ring opening of the large ring is conical, the cover opening of the outer cover 1 is buckled with the outer diameter of the large ring, and the outer cover is connected with the bottle body to form a cylinder; when the head cap drives the vacuum pump core assembly to vertically move downwards, the vacuum pump core assembly drives the plug and the sealing bayonet seat to move downwards, the cavity opening at the bottom of the inner liquid cavity of the inner bin large ring is opened, the stroke groove of the sealing bayonet seat moves to the limiting rib, and the limiting rib of the sealing bayonet seat is limited in the central hole of the inner bin large ring.

The external diameter of a sleeve opening at the other end of the bottle opening sleeve at the top of the inner bin large ring is provided with a convex fixing rib 703, the external diameter of the bottle opening sleeve of the inner bin large ring above the fixing rib is provided with a gear ring 702 smaller than the fixing rib, the internal diameter of the ring opening of the middle ring is provided with a fixing groove 302, and the inner wall of the middle ring above the fixing groove is provided with positioning ribs 301 distributed at equal intervals; the fixed muscle lock of interior storehouse big circle is fixed in the fixed slot of well circle simultaneously, and the gear circle of interior storehouse big circle inserts the location muscle of being fixed in well circle. The buckle groove below inner wall of sealed bayonet socket is equipped with bellied pump body muscle 502, and the interior stopper of vacuum pump core assemblage is equipped with pump body groove with pump body coupling department below pump body external diameter, and the interior stopper of vacuum pump core assemblage is fixed in the buckle groove in the top drill way of sealed bayonet socket with pump body coupling department arch and buckle simultaneously, and the pump body muscle of sealed bayonet socket is sealed with the pump body groove cooperation of the pump body. A passage opening above an inlet hole in a pump body of the vacuum pump core assembly is provided with an elastic sleeve 407, a valve needle 406 is buckled with a valve rod in the pump body, a small piston 405 between one end of the valve rod and the valve needle is clamped and fixed, the outer diameter of the other end of the valve rod extending out of the inner plug is provided with a spring 404, one end of the spring abuts against the bottom of an everting cavity of the outer diameter of the top of the valve rod, the other end of the spring abuts against the bottom of a spring cavity of the top of the inner plug, and the everting cavity of the valve rod is arranged in the spring cavity of the inner plug. The outer side of the buckling position of the pump body of the sleeve opening of the plug and the vacuum pump core assembly is provided with an annular platform which protrudes upwards, the plug is propped against the inner liquid cavity position cavity opening of the inner bin large ring through the outer edge of the annular platform to be sealed, and meanwhile, the outer side ring rib of the annular platform is propped against the inner diameter of the inner liquid cavity position cavity opening of the inner bin large ring to be sealed. The internal thread of the inner bin large ring is connected with the external thread of the top bottle mouth of the bottle body 9, a large piston 10 is arranged in the bottle body, and a bottom cover 11 is arranged at the bottom bottle mouth of the bottle body.

As shown in fig. 6, in the second embodiment, the vacuum pump core assembly is replaced by an emulsion pump core assembly 12, the block is replaced by a straw block 13, the straw block is provided with a straw 14, one side of the pump body of the emulsion pump core assembly is provided with an air inlet hole, the internal thread of the inner bin large ring is connected with the external thread of the top bottle mouth of the blister bottle 15, the straw extends into the blister bottle, and other structures of the emulsion pump core assembly are basically the same as those of the vacuum pump core assembly. According to the above-mentioned features, the straw stopper can be replaced with a stopper, as shown in FIG. 7, to which the straw is fixed by the straw sleeve 16.

The vacuum bottle money assembly mode of the miniature pump head is as follows: assembling the spray head, namely, firstly installing a piston rib of a sealing bayonet seat from the bottom opening of the inner bin large ring upwards, abutting the shoulder of the sealing bayonet seat against the shoulder of the inner bin large ring, and carrying out interference sealing fit on a limiting rib of the sealing bayonet seat and a central hole of the large ring; then the pump core assembly is pressed in from the upper part of the sealing bayonet socket seat, the inner plug and the pump body joint of the pump core assembly are matched with the bayonet socket sealing bayonet socket seat in place, and the outer diameter of the pump body below the inner plug and the pump body joint of the pump core assembly is in interference sealing fit with the pump body rib of the bayonet socket sealing bayonet socket seat; finally, the gasket is arranged from the lower part of the large ring and pressed in place, the middle ring is pressed in from the upper part of the large ring of the inner bin, the fixing groove of the middle ring is matched with the fixing rib buckling position of the large ring of the inner bin to be strongly buckled in place, and the positioning rib of the middle ring is matched with the gear ring of the large ring of the inner bin to play a role in stopping rotation; the head cap is buckled with the valve rod of the pump core assembly in a sealing fit manner, and the assembly of the spray head assembly is completed. And (3) assembling the bottle body, namely firstly installing the piston from the opening part below the bottle body, wherein the sealing rib of the piston is in interference sealing fit with the inner wall of the bottle body, then installing the bottom cover from the opening part below the bottle body, the buckling position of the bottom cover is in strong buckling fit with the buckling position of the bottle body, and the bottle body is assembled after press fitting and fixing.

The vacuum bottle money filling step of the miniature pump head is as follows: filling a first liquid into the bottle body assembly, inverting the spray head assembly, and filling a second liquid into the inner bin large ring; after filling, the plug is filled from the tail port of the pump core assembly, the buckling position of the plug is matched with the buckling position of the pump core assembly to be buckled in place forcibly and in interference seal fit, and the sealing rib of the plug is in interference seal fit with the sealing surface of the large ring; and finally, screwing the sprayer assembly from the upper part of the bottle body assembly, screwing the internal thread of the sprayer assembly into the external thread of the bottle body assembly to the bottom, performing interference sealing fit on the gasket and the bottle mouth of the bottle body, pressing the outer cover in place from the upper part of the middle ring, and performing press fit to the middle ring in place to finish the assembly of the finished product.

The functional principle of the miniature pump head is as follows: pressing the head cap, driving the pump core assemblage and sealed bayonet socket and moving down to a section distance until the shoulder of sealed bayonet socket supports with the shoulder of interior storehouse big circle for jam and big circle separation, the second liquid outflow in the interior storehouse big circle is mixed with the first liquid in the bottle, rocks and realizes the extra quality after the product and mixes, and the head cap is normally pressed to go out the liquid after the misce bene, realizes the normal service function of product. The assembly mode, the filling step and the functional principle of the emulsion type and the vacuum bottle type of the micro pump head are the same.

To sum up, this miniature pump head is applied to vacuum flask and emulsion bottle for isolated, sealed with two kinds of different liquid in the cosmetics package material, the reuse is pressed the mixed use of mode and is gone out the liquid, is a neotype using-way. The double-material sealing matching mode of the miniature pump head enables two kinds of liquid to be respectively filled, isolated and sealed in a container. The pressing head cap drives the pump core assembly and the plug to move downwards, so that the plug is separated from the large ring, liquid in the large ring can flow out and be mixed with liquid in the bottle body, and the function of the pump core can be normally used.

Claims (9)

1. A push type double-liquid miniature pump head is characterized in that one end of the bottom of an inner bin large ring (7) of the miniature pump head is provided with a raised inner liquid cavity, the outer side of the other end of the top of the inner bin large ring is provided with a bottleneck sleeve, the inner diameter of the bottleneck sleeve at the bottleneck sleeve of the inner bin large ring is provided with an internal thread, a ring groove at the top of the bottleneck sleeve at the internal thread is provided with a gasket (6), the outer diameter of the bottleneck sleeve at the bottleneck sleeve of the inner bin large ring is provided with a middle ring (3), a liquid inlet pipe in a head cap (2) is sleeved with a valve rod (403) of a vacuum pump core assembly (4), a passage opening below a liquid inlet hole in a pump body (401) of the vacuum pump core assembly is provided with a plug (8), a sleeve opening hole protruding upwards in the middle of the plug is buckled and fixed on a liquid inlet hole of the pump body, and the outer diameter of the plug sealing ring is sealed with a cavity opening at the inner liquid cavity of the inner bin large ring; the vacuum pump core assembly is characterized in that the joint of an inner plug (402) of the vacuum pump core assembly (4) and a pump body (401) is protruded and is fixed in a buckling groove (501) in a top orifice of a sealing bayonet seat (5) in a buckling mode, the outer diameter of the buckling groove of the sealing bayonet seat is provided with a stroke groove, the outer diameter of the top orifice of the stroke groove is provided with a protruded limiting rib (503), the outer diameter of the sealing bayonet seat below the stroke groove is provided with a piston rib (504) with two ends arc-shaped protruded, the stroke groove of the sealing bayonet seat is buckled and fixed in a center hole (701) at the other end of the top of an inner bin large ring (7), and meanwhile, the piston rib of the sealing bayonet seat is respectively abutted and sealed with the inner wall of the inner liquid cavity of the inner bin large ring.

2. The push type biliquid micropump head of claim 1, wherein the external diameter of the bottleneck sleeve at the other end of the top of the inner chamber large ring (7) is provided with a convex fixing rib (703), the external diameter of the bottleneck sleeve of the inner chamber large ring above the fixing rib is provided with a gear ring (702) smaller than the fixing rib, the internal diameter of the ring opening of the middle ring (3) is provided with a fixing groove (302), and the inner wall of the middle ring above the fixing groove is provided with positioning ribs (301) distributed at equal intervals; the fixed muscle lock of interior storehouse big circle is fixed in the fixed slot of well circle simultaneously, and the gear circle of interior storehouse big circle inserts the location muscle of being fixed in well circle.

3. The push type double-liquid miniature pump head according to claim 1, wherein the inner wall below the snap groove (501) of the seal bayonet seat (5) is provided with a raised pump body rib (502), the outer diameter of the pump body below the joint of the inner plug (402) and the pump body (401) of the vacuum pump core assembly (4) is provided with a pump body groove, the joint of the inner plug and the pump body of the vacuum pump core assembly is raised and is snap-fixed in the snap groove (501) in the top orifice of the seal bayonet seat (5), and simultaneously, the pump body rib of the seal bayonet seat is matched and sealed with the pump body groove of the pump body.

4. The push type double-liquid micro pump head according to claim 1, wherein a passage opening above an inner inlet hole of the pump body (401) of the vacuum pump core assembly (4) is provided with a spring sleeve (407), the valve needle (406) is fastened with a valve rod (403) in the pump body and clamps a small piston (405) between one end of the valve rod and the valve needle, the outer diameter of the other end of the valve rod extending out of the inner plug (402) is provided with a spring (404), one end of the spring abuts against the bottom of an everting cavity of the outer diameter of the top of the valve rod, the other end of the spring abuts against the bottom of a spring cavity of the top of the inner plug, and the everting cavity of the valve rod is in the spring cavity of the inner plug.

5. The push type double-liquid miniature pump head according to claim 1, wherein an upwardly protruding annular platform is provided on the outside of the buckling position of the spigot of the plug (8) and the pump body of the vacuum pump core assembly (4), the plug is sealed against the inner liquid cavity port of the inner chamber large ring (7) through the outer edge of the annular platform, and the outer ring rib of the annular platform is sealed against the inner diameter of the inner liquid cavity port of the inner chamber large ring.

6. The push type double-liquid miniature pump head according to claim 1, wherein the internal thread of the inner chamber large ring (7) is connected with the external thread of the top bottle opening of the bottle body (9), the large piston (10) is arranged in the bottle body, and the bottom bottle opening of the bottle body is provided with the bottom cover (11).

7. The push type biliquid micro pump head as claimed in claim 1, wherein the vacuum pump core assembly (4) is replaced with an emulsion pump core assembly (12), the stopper (8) is replaced with a straw stopper (13), the straw stopper is provided with a straw (14), one side of the pump body of the emulsion pump core assembly is provided with an air inlet hole, the internal thread of the inner chamber large ring (7) is connected with the external thread of the top bottle mouth of the plastic-absorbing bottle (15), and the straw extends into the plastic-absorbing bottle.

8. Push type biliquid micropump head according to claim 7, characterized in that the straw stopper (13) is replaced by a stopper (8), the straw (14) being fixed to the stopper by means of a straw sleeve (16).

9. The push type double-fluid micro pump head according to claim 1, wherein the head cap (2) drives the vacuum pump core assembly (4) to move downward, and simultaneously the vacuum pump core assembly drives the plug (8) and the sealing bayonet seat (5) to move downward, the bottom opening of the inner fluid chamber of the inner chamber large ring (7) is opened, the stroke slot of the sealing bayonet seat moves to the limiting rib (503), and the limiting rib of the sealing bayonet seat is limited in the central hole (701) of the inner chamber large ring.

Images