CN211686397U

CN211686397U - Prevent that emulsion from flowing out's seal structure in static emulsion pump

Info

Publication number: CN211686397U
Application number: CN202020205331.XU
Authority: CN
Inventors: 祝广伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-10-16
Anticipated expiration: 2030-02-25

Abstract

The utility model discloses a sealing structure for preventing emulsion from flowing out of a static emulsion pump, which comprises a body, a press head and a main column, wherein a plastic spring which can jack the press head and the main column upwards is arranged in an inner cavity of the body, the plastic spring is a plastic spring pipe with an upper end and a lower end which are open and sealed at the side surface, the upper end of the plastic spring is communicated with the main column, the lower end of the plastic spring is communicated with an inlet of the body so that the plastic spring forms a channel which is used for connecting the main column and the body and supplying liquid to flow, a communicating port which is communicated with the main column up and down is arranged between the plastic spring and the main column, a pull rod which is arranged at the inner side of the plastic spring is arranged in the body, the pull rod is vertically corresponding to the communicating port, the pull rod can penetrate out from the communicating port when the plastic spring is pressed down and has a gap between the side wall of the communicating port, a plug which is arranged above the communicating port is arranged at the upper end of the pull rod, simple structure and good sealing performance.

Description

Prevent that emulsion from flowing out's seal structure in static emulsion pump

[ technical field ] A method for producing a semiconductor device

The utility model relates to a prevent that emulsion from flowing out's seal structure in static emulsion pump.

[ background of the invention ]

At present, the emulsion pump on the market mainly comprises a press head (or elbow), a lock cover, a metal spring, a screw tooth cover, a body, a main column, a piston, a secondary column and a glass ball, for example, the emulsion pump is described in patent No. 201020679937.3 published in Chinese patent literature, the emulsion pump comprises the press head, the lock cover, a gasket, a spring, the screw tooth cover, the body, the main column, the piston, the secondary column, the glass ball and a suction pipe, an inner cylinder in the middle of the press head is connected with the upper part of the main column, an outer cylinder in the middle of the press head is annularly sleeved on a cylinder on the upper part of the screw tooth cover, the screw tooth cover is connected with the lock cover, threads matched with a bottle mouth are arranged on the inner wall of the screw tooth cover, two ends of the spring are respectively pressed on the main column and the lock cover, and the spring is positioned on an.

In the emulsion pump, the press head is directly communicated with the interior of the main column, the lower end of the main column is provided with the auxiliary column and the piston, the main body is divided into an upper cavity and a lower cavity by the auxiliary column and the piston, the lower cavity is used as a storage cavity for storing emulsion, the auxiliary column is pulled upwards by the main column in the bouncing process, after the auxiliary column rises for a small distance relative to the piston, the lower end of the auxiliary column presses the piston upwards from the lower part to form sealing, the lower end of the main column is sealed, the communication between the storage cavity and the main column is disconnected, and the piston is pulled to move upwards together; during the pressing process, the main column presses the auxiliary column to move downwards, the main column presses the piston to descend together after the auxiliary column descends a small distance relative to the piston, the auxiliary column is separated from the piston, and a channel for communicating the main column with the storage cavity is formed between the auxiliary column and the piston.

The emulsion pump with the composition structure has the advantages that as the emulsion pump contains the metal spring, the emulsion pump can hardly meet the environmental control standards of foreign countries, particularly European and American markets; one emulsion pump simultaneously contains plastic, metal and glass parts, and the emulsion pump needs to be disassembled for classified recovery during recovery, which is not beneficial to the recovery of products. In addition, the piston is used, the inner cavity of the body is used as a pump cavity for the piston to move up and down, the emulsion enters the inner cavity of the body from the suction pipe through the glass ball and enters the main column through the piston and the auxiliary column to flow out from the pressing head, and in an initial state, a small amount of lubricating liquid which does not conflict with the performance of the emulsion needs to be injected to lubricate the piston so that the piston can move in the inner cavity of the body smoothly when the piston is used.

The present invention is made based on such a situation.

[ Utility model ] content

The utility model aims to solve the technical problem that a simple structure, sealing performance are good prevent that emulsion from the seal structure of flowing out from static emulsion pump, through the sealed plastic spring in side that adopts the plastic material to make, connect the entry of principal post and body from top to bottom, make the plastic spring become the entry of connecting principal post and body and supply the passageway that liquid flows be equipped with the intercommunication mouth of intercommunication the two about being equipped with between plastic spring and the principal post, set up the pull rod in the plastic spring inboard, set up the stopper in the upper end of pull rod, when plastic spring bounced up, press through the stopper and pull down plastic spring and principal post on the intercommunication mouth and plug up the intercommunication mouth sealedly, can make the emulsion pump avoid using metal spring and piston structure, easily satisfy the environmental protection requirement of high standard, it is convenient to retrieve.

In order to solve the technical problem, the utility model relates to a prevent that emulsion from flowing out's seal structure in static emulsion pump, its characterized in that: the plastic spring is a plastic spring pipe with an upper end and a lower end opened and a side surface sealed, the upper end of the plastic spring is communicated with the main column, the lower end of the plastic spring is communicated with the inlet of the body so that the plastic spring forms a channel which is connected with the main column and the body and is used for liquid flowing, a communicating port which is communicated with the main column and the main column up and down is arranged between the plastic spring and the main column, a pull rod which is positioned at the inner side of the plastic spring is arranged in the body, the pull rod is vertically corresponding to the communicating port, can penetrate out from the communicating port when the plastic spring is pressed down, a gap is formed between the pull rod and the side wall of the communicating port, and a plug which is positioned above the communicating port is arranged at the upper end of the pull rod, when the plastic spring bounces, the plug can press the communication opening from the top to pull the plastic spring and the main column downwards and plug and seal the communication opening.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the stopper is the back taper structure, and the lower part can be impressed in the intercommunication mouth in.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the plastic spring locking device is characterized in that a locking cover capable of limiting the plastic spring in the body is arranged at the upper port of the body, the locking cover is located above the plastic spring, when the plastic spring springs, the plastic spring is blocked from the upper side and the maximum height of the plastic spring in a bouncing mode is limited, and the plastic spring is in a compressed state when being bounced and pressed on the locking cover.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the lower end of the pull rod is connected with a sealing seat, the lower end of the plastic spring is pressed against the sealing seat and the bottom of the inner cavity of the body, the sealing seat is connected with the body in a sealing mode, the sealing seat is connected with the plastic spring in a sealing mode, and a through hole for communicating the plastic spring with an inlet of the body is formed in the sealing seat.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the sealing seat is provided with a sealing groove for inserting the lower end of the plastic spring, and the lower end face of the plastic spring is pressed on the groove bottom of the sealing groove and is in sealing fit with the groove bottom of the sealing groove.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: under the elastic pressure of the plastic spring, the bottom surface of the sealing seat is tightly attached to the bottom of the inner cavity of the body, and sealing is formed between the bottom surface of the sealing seat and the bottom of the inner cavity of the body.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the plastic spring is connected with the main column in a buckling manner and can prevent the plastic spring and the main column from being separated up and down.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the upper end of the plastic spring is provided with an annular buckling part inserted into the main column from the lower port of the main column, the outer side surface of the buckling part is hermetically connected with the inner side surface of the main column, the communication port is formed in the plastic spring and located on the inner side of the buckling part, a second buckling ring protrudes from the outer side of the buckling part, and the inner wall of the main column is provided with a second buckling groove which is concave and is buckled with the second buckling ring.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the upper end of the plastic spring is located on the outer side of the buckling part and is provided with an annular end face which can be in sealing fit with the lower end face of the main column, and when the main column is pressed downwards, the lower end face of the main column is pressed on the annular end face and forms sealing between the two end faces.

The sealing structure for preventing the emulsion from flowing out of the static emulsion pump is characterized in that: the buckling parts and the inner holes at the lower ends of the main columns are circular, and the second buckling rings and the second buckling grooves are corresponding in ring shape, so that the main columns can rotate relative to the plastic springs under the action of external force.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model discloses an adopt the sealed plastic spring in side that the plastic material made, connect the entry of principal post and body from top to bottom, make the plastic spring become the entry of connecting principal post and body and supply the passageway that liquid flows be equipped with the intercommunication mouth of intercommunication the two about between plastic spring and the principal post, set up the pull rod in the plastic spring inboard, set up the stopper in the upper end of pull rod, when the plastic spring bounces, press down plastic spring and principal post on the intercommunication mouth through the stopper and pull up the intercommunication mouth and plug up the intercommunication mouth sealedly, then when the bottle pressurized deformation, the plastic spring is transmitted to the pressure of bottle inner chamber, can prevent that the emulsion in the plastic spring from getting into the principal post through the intercommunication mouth in, avoid the principal post interior pressure to deform and grow along with the bottle pressurized to can prevent that the emulsion flow in the principal post from flowing out after pressing the head, the leakproofness is good.

2. The utility model is provided with the lock cover at the upper port of the body, when the plastic spring bounces, the plastic spring is blocked from the upper part through the lock cover and the maximum height of the bounced plastic spring is limited, and the plastic spring bounces and is propped against the lock cover to be in a compressed state, and the position of the press head and the main column after bounced can be stabilized by the structure; the other can make the plastic spring bounce, the pull rod and the plug tightly pull the communication port to ensure sealing; when the bottle is deformed under pressure and the pressure in the inner cavity of the plastic spring is increased, the pressure of the plastic spring rising upwards is shared, and the overlarge pulling force of the pull rod and the plug at the communication port is avoided.

3. The utility model discloses a plastic spring is from the below with the principal post with according to the head bounce, avoids using metal spring, and plastic spring can regard as the partly of the storage chamber that is used for saving the emulsion, realizes the change of storage chamber volume size through plastic spring's flexible to form inside and outside pressure differential, realize the pump sending emulsion, simplify the structure of emulsion pump, can avoid using piston structure, easily satisfy the environmental protection requirement of high standard, it is convenient to retrieve.

4. Because the plastic spring bounces and pushes up and is in the compression state when the lock is covered, consequently, the plastic spring is in the compression state of different degrees and the in-process of bounceing and pushing down at bounce state and state, then only need set up an independent seal receptacle in the below of plastic spring and connect the pull rod, then the seal receptacle can paste the inner chamber bottom at the body all the time through the roof pressure of plastic spring to keep the position of pull rod unchangeable. In addition, only need to set up the lower terminal surface and the seal receptacle of plastics spring and closely laminate, the bottom surface of seal receptacle and the inner chamber bottom of body closely laminate, then through pressure each other, can be so that sealing connection between the binding face, simple structure, the equipment is convenient.

5. The plastic spring of the utility model is connected with the main column in a lock joint way, and the disassembly and the assembly are convenient; the lower end of the main column is inserted into the main column from the lower port of the main column through the buckling part, and the outer side surface of the buckling part is hermetically connected with the inner side surface of the main column, so that the structure is simple; the pressing head and the main column are pressed downwards, the internal pressure in the storage cavity is increased, in order to avoid the insufficient sealing performance of the joint of the plastic spring and the main column, an annular end face which can be in sealing fit with the lower end face of the main column is arranged on the outer side of the buckling part at the upper end of the plastic spring, and when the main column is pressed downwards, the lower end face of the main column is pressed on the annular end face and forms sealing between the two end faces.

6. The utility model discloses simple structure, all parts all can adopt the plastic material to make, are convenient for retrieve, easily satisfy the environmental protection requirement.

[ description of the drawings ]

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

FIG. 1 is a sectional view of an all-plastic lotion pump with a sealing structure for preventing lotion from flowing out of a static lotion pump, in a state of being popped up by a press head;

FIG. 2 is a sectional view of an all-plastic lotion pump with a sealing structure for preventing lotion from flowing out of the lotion pump;

FIG. 3 is a schematic structural view of a plastic spring;

FIG. 4 is a schematic structural view of a seal seat;

FIG. 5 is a schematic of the structure of the first and second spools;

FIG. 6 is a schematic view of the structure of the button;

FIG. 7 is a schematic structural view of a main column;

fig. 8 is a schematic view of the structure of the locking cover.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1 to 8, the all-plastic lotion pump with a sealing structure for preventing lotion from flowing out of a static lotion pump of the present invention comprises a body 1 and a press head 2, wherein the upper end of the body 1 is provided with a screw thread 3 for connecting with a bottle, the lower end of the body 1 is provided with a suction pipe 4 communicated with an inlet 11 at the lower end thereof, the press head 2 is connected with a main column 5 inserted into the body 1, a plastic spring 6 capable of jacking the press head 2 and the main column 5 upwards is arranged in an inner cavity of the body 1, the plastic spring 6 is positioned below the main column 5 and is hermetically connected with the main column 5, the plastic spring 6 is a plastic spring pipe with an opening at the upper end and a sealing side surface, the upper end of the plastic spring 6 is communicated with the main column 5, the lower end is communicated with the inlet 11 of the body so that the plastic spring 6 forms a channel for connecting the main column 5 and the inlet 11 of the body and supplying liquid to flow, a communicating port 61 which is used for communicating the plastic spring 6 and the main column 5 up and down is arranged between the plastic spring 6 and the main column 5, a pull rod 7 which is positioned at the inner side of the plastic spring 6 is arranged in the body 1, the pull rod 7 is vertically corresponding to the communicating port 61, the pull rod 7 can penetrate out of the communicating port 61 when the plastic spring 6 is pressed down, a gap is reserved between the pull rod 7 and the side wall of the communicating port 61, a plug 71 which is positioned above the communicating port 61 is arranged at the upper end of the pull rod 7, the plug 71 can be pressed on the communicating port 61 from the top when the plastic spring 6 is bounced up to pull the plastic spring 6 and the main column 5 down and plug the communicating port 61 for sealing, a locking cover 8 which can limit the plastic spring 6 in the body 1 is arranged at the upper end port of the body 1, a first one-way valve device which can allow emulsion in the main column 5 to flow to the pressing head 2 and prevent the emulsion in the pressing head 2 from flowing to the main column 5 is arranged between the plastic spring 6 and the inlet 11 of the And the second one-way valve device is used for preventing the emulsion in the plastic spring 6 from flowing out of the inlet 11 of the body, and the body 1, the screw thread 3, the press head 2, the main column 5, the suction pipe 4, the plastic spring 6, the pull rod 7, the plug 71, the locking cover 8, the first one-way valve device and the second one-way valve device are respectively made of plastic materials.

The all-plastic emulsion pump adopts a brand-new structure, and is characterized in that a tubular plastic spring 6 with sealed side surface is arranged below a main column 5, the main column 5 is connected with the inlet 11 of the body through the plastic spring 6 to form a channel for emulsion to flow from the inlet 11 of the body to the main column 5, a first one-way valve device is arranged between the press head 2 and the main column 5, a second one-way valve device is arranged between the plastic spring 6 and the inlet 11 of the body, a storage cavity for storing emulsion is formed among the main column 5, the plastic spring 6, the first one-way valve device and the second one-way valve device, when the press head 2 is pressed down under the action of external force, the plastic spring 6 is compressed and shortened, the storage cavity has a small volume, the internal pressure is increased, and pressure difference is formed between the storage cavity and the outside, and the emulsion flows to the press head 2 from the storage cavity through the first one-way valve device and flows out of the press head 2 because the first one-way valve device and the second one-way valve device are both in one-way flow structures. When the external force is released, the main column 5 and the press head 2 are jacked up under the elastic force of the plastic spring 6, the plastic spring 6 is expanded and lengthened, the volume of the storage cavity is enlarged, the internal pressure is reduced, pressure difference is formed between the internal pressure and the outside, and the emulsion flows into the storage cavity from the inlet 11 of the body through the suction pipe 4 and the second one-way valve device, so that the effect of pumping the emulsion is realized.

And in the pull rod 7 of the inner side of the plastic spring 6, the upper end of the pull rod 7 is provided with the plug 71, when the plastic spring 6 bounces, the plug 71 is pressed on the communicating port 61 to pull the plastic spring 6 and the main column 5 downwards and plug the communicating port 61 for sealing, so that when the bottle is pressed and deformed, emulsion in the plastic spring 6 can be prevented from entering the main column 5 through the communicating port 61, the emulsion in the main column 5 can be prevented from flowing out after flowing to the press head 2, and the sealing performance is good. The plug 71 is of an inverted cone structure, and the middle lower portion of the plug can be pressed into the communication port 61, so that the sealing stability is better. When the push head 2 is pushed down, the communication port 61 moves downward with the contraction of the main column 5 and the plastic spring 6, and is separated from the plug 71, and the emulsion flows from the plastic spring 6 into the main column 5 through the gap between the pull rod 7 and the side wall of the communication port 61.

By adopting the structure, all parts forming the emulsion pump can be made of plastic materials so as to better meet the high-standard environmental protection requirement, and the emulsion pump is convenient to recycle, does not need to disassemble the parts and then recycle in a classified manner, and does not need to use a piston and lubricating liquid aiming at the piston.

8 covers in the main column 5 outsides of locking closure 8, be equipped with the waterproof cover 9 that is used for plugging up the gap between the upper end of locking closure 8 and the main column 5 between locking closure 8 and the main column 5, waterproof cover 9 is made by the plastic material, because locking closure 8 fixes on the body, 8 up-and-down motion of main column 5 relative locking closure can prevent through setting up waterproof cover 9 that outside liquid and debris from getting into body 1 from the gap between the locking closure 8 and the main column 5 two, prevent to pollute the emulsion pump inside.

The plastic spring 6 and the main column 5 are connected in a buckling mode and can be prevented from being separated up and down, and the plastic spring 6 and the main column 5 can be assembled and disassembled conveniently.

The upper end of the plastic spring 6 is provided with an annular buckling part 62 inserted into the main column 5 from the lower port of the main column, the outer side surface of the buckling part 62 is hermetically connected with the inner side surface of the main column 5, the communication port 61 is arranged on the plastic spring 6 and is positioned at the inner side of the buckling part 62, the outer side of the buckling part 62 is protruded with a second buckling ring 63, the inner wall of the main column 5 is provided with a second buckling groove 51 which is concave and is buckled with the second buckling ring 63, and during assembly, the buckling part 62 is spliced with the main column 5 until the second buckling ring 63 is buckled with the second buckling groove 51.

The upper end of the plastic spring 6 is provided with an annular end face 64 which is positioned outside the buckling part 62 and can be in sealing fit with the lower end face of the main column 5, and when the main column 5 is pressed downwards, the lower end face of the main column 5 is pressed on the annular end face 64 and forms sealing between the two end faces. Since the inner pressure of the main column 5 is increased when the pressing head 2 is pressed down, and the lower end surface of the main column 5 is pressed against the annular end surface 64 during the pressing down and forms a seal between the two end surfaces, the main column 5 and the plastic spring 6 have better sealing performance. When the main column 5 is static and bounces, because the internal pressure of the main column 5 is small, the liquid in the main column 5 can be prevented from flowing out from the joint of the main column 5 and the plastic spring 6 by the sealing connection of the outer side surface of the buckling part 62 and the inner side surface of the main column 5.

The lower end inner holes of the buckling part 62 and the main column 5 are circular, the second buckling ring 63 and the second buckling groove 51 are circular correspondingly and enable the main column 5 to rotate relative to the plastic spring 6 under the action of external force, a guide structure for guiding the main column 5 to move up and down is arranged between the lock cover 8 and the main column 5, and the guide structure is staggered when the main column 5 rotates relative to the lock cover 8 and prevents the main column 5 from moving up and down.

Guide structure is including setting up the guide way 81 on the locking closure 8, be equipped with the guide post 53 that leads from top to bottom with the guide way 81 cooperatees on the principal post 5, one side of the upper end of guide way 81 is equipped with the indent and can supply the guide post 53 to rotate out the locking groove 82 that the back card was gone into from the guide way 81 after the principal post 5 bounces, the tank bottom that locks the groove 82 is located the below of guide post 53 and restricts guide post 53 downstream.

When the plastic spring 6 is in the bounce state, the press head 2 and the main column 5 are rotated to enable the main column 5 to rotate relative to the lock cover 8, the guide column 53 rotates out of the guide groove 81 and is clamped in the locking groove 82, the main column 5 cannot move downwards, and when the plastic spring 6 is limited by the lock cover 8, the pull rod 7 and the plug 71 pull the plastic spring 6 and the main column 5 downwards, the main column 5 is limited to move upwards, and the emulsion pump is locked. Of course, since the plastic spring 6 and the main column 5 are connected by buckling, the main column 5 can be pulled out from the plastic spring 6 by force when the external force is large enough.

The first one-way valve device comprises a first valve core 10, a main column outlet 52 communicated with the press head 2 is arranged in the main column 5, the first valve core 10 comprises a first outer ring 101 fixed between the press head 2 and the main column 5, a first inner core 102 which is separated from the first outer ring 101 and covers the main column outlet 52 from one side of the press head 2 is arranged on the inner side of the first outer ring 101, and the first outer ring 101 and the first inner core 102 are elastically connected through a first rib 103 and enable the first inner core 102 to float upwards when the bottom of the first inner core is pressed so as to open the main column outlet 52.

The lower end of the press head 2 is provided with a first positioning groove 21 which is concave and is used for clamping and positioning the first outer ring 101, an annular boss 54 which protrudes towards one side of the press head 2 and presses the first inner core 102 towards one side of the press head 2 is arranged on the outer side of the main column outlet 52 in the main column 5, the annular boss 54 is arranged on the inner side below the first inner core 102, and the annular boss 54 is pressed on the first inner core 102 so as to seal the main column outlet 52. The annular boss 54 protrudes upward and presses the first inner core 102 toward the pressing head 2, so that the first inner core 102 and the annular boss 54 have initial pre-pressure, and the sealing performance of the first one-way valve device is better in the static state and the bouncing process of the main column 5.

The first outer ring 101, the first inner core 102 and the first ribs 103 are integrally formed by elastic plastic materials, preferably rubber materials, and the structure is simple.

The inner wall of the main column 5 is provided with a first concave buckling groove 55, the button 2 is provided with a first buckling ring 22 which is clamped into the first buckling groove 55 and limits the button 2 up and down, the inner side of the main column 5 is provided with an anti-rotation groove 56 along the circumferential direction, and the button 2 is provided with an anti-rotation strip 23 which can be clamped into the anti-rotation groove 56 to prevent the button 2 from rotating relative to the main column 5.

When the press head 2 and the main column 5 are assembled, the first valve core 10 is firstly placed into the first positioning groove 21 at the lower end of the press head 2, the anti-rotation strip 23 is opposite to the anti-rotation groove 56, the press head 2 is inserted into the upper end of the main column 5 until the first buckling ring 22 is buckled with the first buckling groove 55, at this time, the first outer ring 101 is pressed between the press head 2 and the main column 5, and the first inner core 102 is pressed on the annular boss 54, as shown in fig. 2, the structure is simple, and the assembly is convenient.

A sealing seat 70 for sealing and connecting the plastic spring 6 and the body 1 is arranged between the plastic spring 6 and the body 1, the sealing seat 70 is made of plastic materials, the lower end of the pull rod 7 is fixed on the sealing seat 70, a bottom cavity 701 is arranged at the bottom of the sealing seat 70, a through hole 702 for communicating the plastic spring 6 with the bottom cavity 701 is arranged on the sealing seat 70, and the bottom cavity 701 is communicated with the inlet 11 of the body. The lower end of the plastic spring 6 is sealed and the pull rod 7 is fixed through the sealing seat 70, and the structure is simple.

The second one-way valve device comprises a second valve core 20, the second valve core 20 is positioned in a bottom cavity 701, the second valve core 20 comprises a second outer ring 201 fixed between the sealing seat 70 and the body 1, a second inner core 202 isolated from the second outer ring 201 and covering the inlet 11 of the body from the bottom cavity 701 side is arranged on the inner side of the second outer ring 201, the second outer ring 201 and the second inner core 202 are elastically connected through a second rib 203, and the second inner core 202 can float upwards when the bottom of the second outer ring is pressed so as to open the inlet 11 of the body, and the structure is simple.

The second outer ring 201, the second inner core 202 and the second ribs 203 are integrally formed by elastic plastic materials, preferably rubber materials, and the structure is simple and the manufacturing is convenient.

The lock cover 8 is located above the plastic spring 6, and when the plastic spring 6 bounces, the plastic spring 6 is blocked from the top and the maximum height of the plastic spring 6 in bouncing is limited, the plastic spring 6 is in a compressed state when bouncing and pressing on the lock cover 8, the lower end of the plastic spring 6 presses on the seal seat 70 and presses the seal seat 70 at the bottom of the inner cavity of the body 1, the seal seat 70 is provided with a seal groove 703 for inserting the lower end of the plastic spring 6, the lower end face of the plastic spring 6 presses on the bottom of the seal groove 703 and is in sealing fit with the groove bottom of the seal groove 703, and under the elastic pressure of the plastic spring 6, the bottom face of the seal seat 70 is tightly fitted at the bottom of the inner cavity of the body 1 and forms a seal with the bottom of the inner cavity of the body 1 at the bottom face of the seal seat 70. Because the plastic spring 6 is in the compression state of different degrees in the bounce state, the pressing state, and the bounce and pressing processes of the plastic spring 6, the sealing seat 70 can be always pressed against the bottom of the inner cavity of the body 1, the sealing seat 70 is always in sealing connection with the body 1, and the lower end face of the plastic spring 6 is always pressed on the bottom of the sealing groove 703 in sealing connection.

Because the plastic spring 6 is pressed between the lock cover 8 and the seal seat 70 in the bounce state, the friction force which needs to be overcome by the rotation of the plastic spring 6 and the seal seat 70 is large, and when the press head 2 and the main column 5 are rotated, the main column 5 can rotate relative to the plastic spring 6, so that the rotation of the plastic spring 6 and the seal seat 70 is avoided.

Therefore, the independent sealing seat 70 and the plastic spring 6 are adopted, after the plastic spring 6 is inserted into the sealing groove 703 of the sealing seat 70, the pull rod 7 is inserted from the plastic spring 6, the pull rod 7 is inserted on the sealing seat 70, the plastic spring 6 is limited between the sealing seat 70 and the plug 71 to form a whole, and the whole is inserted into the body 1, wherein the side wall of the sealing seat 70 is matched with the side wall of the inner cavity of the body 1, the structure is simple, and the assembly is convenient.

In addition, the bottom of the sealing seat 70 is provided with a second positioning groove 704 for the second outer ring 201 to be clamped and positioned, when the sealing seat 70 is installed in the body 1, the second valve core 20 is placed in the second positioning groove 704, and the second valve core 20 can be fixed above the inlet 11 of the body 1 by pressing through the elastic force of the plastic spring 6.

And the plastic spring 6 is in a compressed state after being bounced, so that the position of the press head 2 and the main column 5 after being bounced can be stable; after the plastic spring 6 is bounced, the pull rod 7 and the plug 71 tightly pull the communication port 61 to ensure sealing; when the bottle is pressed and deformed and the pressure in the inner cavity of the plastic spring 6 is increased, the pressure of the upward expansion of the plastic spring 6 is shared, and the overlarge tension of the pull rod 7 and the plug 71 at the communication port 61 is avoided.

Claims

1. A kind of seal structure preventing latex emulsion from flowing out from the static latex pump, characterized by that: comprises a body (1) and a pressing head (2), wherein the pressing head (2) is connected with a main column (5) inserted into the body (1), a plastic spring (6) capable of jacking the pressing head (2) and the main column (5) upwards is arranged in an inner cavity of the body (1), the plastic spring (6) is positioned below the main column (5), the plastic spring (6) is hermetically connected with the main column (5), the plastic spring (6) is a plastic spring tube with an opening at the upper end and a sealing at the lower end, the upper end of the plastic spring (6) is communicated with the main column (5), the lower end of the plastic spring is communicated with an inlet (11) of the body so that the plastic spring (6) forms a channel for connecting the main column (5) and the inlet (11) of the body and supplying liquid to flow, a communication port (61) for communicating the plastic spring (6) and the main column (5) up and down is arranged between the plastic spring (6) and the main column (5), and a pull rod (7) positioned on the inner side of the plastic spring (6) is, the pull rod (7) corresponds to the communication opening (61) up and down, can penetrate out of the communication opening (61) when the plastic spring (6) is pressed down, and has a gap with the side wall of the communication opening (61), a plug (71) located above the communication opening (61) is arranged at the upper end of the pull rod (7), and when the plastic spring (6) is bounced, the plug (71) can be pressed upwards on the communication opening (61) to pull the plastic spring (6) and the main column (5) downwards and plug the communication opening (61) for sealing.

2. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 1, wherein: the plug (71) is of an inverted cone structure, and the middle lower part of the plug can be pressed into the communication opening (61).

3. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 1, wherein: the plastic spring limiting device is characterized in that a lock cover (8) capable of limiting the plastic spring (6) in the body (1) is arranged at an upper port of the body (1), the lock cover (8) is located above the plastic spring (6), when the plastic spring (6) bounces, the plastic spring (6) is blocked from the upper side, the maximum height of the bounced plastic spring (6) is limited, and the plastic spring (6) is in a compressed state when bounced and pressed on the lock cover (8).

4. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 3, wherein: the lower end of the pull rod (7) is connected with a sealing seat (70), the lower end of the plastic spring (6) is pressed against the sealing seat (70) and presses the sealing seat (70) against the bottom of the inner cavity of the body (1), the sealing seat (70) is in sealing connection with the plastic spring (6), and a through hole (702) for communicating the plastic spring (6) with an inlet (11) of the body is formed in the sealing seat (70).

5. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 4, wherein: the sealing seat (70) is provided with a sealing groove (703) for inserting the lower end of the plastic spring (6), and the lower end face of the plastic spring (6) is pressed on the groove bottom of the sealing groove (703) and is in sealing fit with the groove bottom of the sealing groove (703).

6. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 4, wherein: under the elastic pressure of the plastic spring (6), the bottom surface of the sealing seat (70) is tightly attached to the bottom of the inner cavity of the body (1) and a seal is formed between the bottom surface of the sealing seat (70) and the bottom of the inner cavity of the body (1).

7. A seal structure for preventing an emulsion from flowing out of a stationary emulsion pump according to any one of claims 1 to 6, wherein: the plastic spring (6) and the main column (5) are connected in a buckling manner and can prevent the plastic spring and the main column from being separated up and down.

8. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 7, wherein: the upper end of the plastic spring (6) is provided with an annular buckling part (62) inserted into the main column (5) from the lower port of the main column, the outer side surface of the buckling part (62) is hermetically connected with the inner side surface of the main column (5), the communication port (61) is arranged on the plastic spring (6) and is positioned on the inner side of the buckling part (62), the outer side of the buckling part (62) protrudes with a second buckling ring (63), and the inner wall of the main column (5) is provided with a second buckling groove (51) which is concave and is buckled with the second buckling ring (63).

9. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 8, wherein: the upper end of the plastic spring (6) is positioned on the outer side of the buckling part (62) and is provided with an annular end face (64) which can be in sealing fit with the lower end face of the main column (5), and when the main column (5) is pressed downwards, the lower end face of the main column (5) is pressed on the annular end face (64) and forms sealing between the two end faces.

10. A seal arrangement for preventing the flow of emulsion from a stationary emulsion pump as defined in claim 8, wherein: the inner holes at the lower ends of the buckling part (62) and the main column (5) are circular, the second buckling ring (63) and the second buckling groove (51) are correspondingly circular, and the main column (5) can rotate relative to the plastic spring (6) under the action of external force.