CN219077914U

CN219077914U - Sealing piston and glue packaging structure

Info

Publication number: CN219077914U
Application number: CN202320123363.9U
Authority: CN
Inventors: 薄涛; 方旺胜
Original assignee: Tuodi New Materials Suzhou Co ltd; Tuodi Chemical Shanghai Co ltd
Current assignee: Tuodi Chemical Shanghai Co ltd; Tuodi New Materials Suzhou Co ltd
Priority date: 2023-01-18
Filing date: 2023-01-18
Publication date: 2023-05-26
Anticipated expiration: 2033-01-18

Abstract

The utility model provides a sealing piston and a glue packaging structure, wherein the sealing piston comprises a piston main body, a one-way valve and a screw cap, the piston main body comprises a piston ring and a piston core arranged in the piston ring, the outer peripheral surface of the piston ring is provided with a groove for accommodating a deformable sealing ring, the bottom of the piston core is connected with the piston ring, and the piston core is provided with a through hole; the one-way valve part is arranged in the through hole, the inlet of the one-way valve is close to the bottom of the piston core, and the outlet of the one-way valve is close to the top of the piston core; the nut is detachably connected with the piston core; when the nut is connected with the piston core, the nut seals the outlet of the one-way valve, and after the nut is separated from the piston core, the outlet of the one-way valve is exposed from the top of the piston core. The glue packaging structure comprises a rubber cylinder, a deformable sealing ring and a sealing piston, wherein the sealing ring is sleeved on a groove of the sealing piston, and the sealing piston is in interference fit with the inner wall of the rubber cylinder through the sealing ring. The piston is in clearance fit with the inner wall of the rubber tube, so that the sealing performance is good, and the storage stability is improved.

Description

Sealing piston and glue packaging structure

Technical Field

The utility model relates to the technical field of glue packaging, in particular to a sealing piston and a glue packaging structure.

Background

At present, aluminum pistons are often used for sealing rubber pipes on the market, and the following problems exist:

1. in order to ensure that the piston can be pressed into the rubber tube, the size of the metal piston is slightly smaller than the inner diameter of the aluminum tube, so that gaps are reserved between the piston and the inner wall of the rubber tube, moisture can infiltrate into the rubber tube, and the storage of the glue is affected.

2. Because the size of the piston is smaller, the piston is easy to incline or roll over in the process of pressing the piston, or the whole glue cannot be used because the pressure is not uniformly applied to roll over in the use process.

3. In the air pressure sizing process, when the glue is completely used up, the air pressure is stopped to be applied, so that the air pressure is inconsistent before and after the piston, the situation that the piston is ejected out by the air pressure at the front end occurs, and personnel injury is easily caused.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a sealing piston and glue packaging structure, which can solve the problems that the sealing of a rubber tube piston is not tight and the piston is easy to turn on one's side in the using process in the prior art.

The present disclosure provides a sealing piston comprising:

the piston comprises a piston body and a piston core arranged in the piston ring, wherein the outer circumferential surface of the piston ring is provided with a groove for accommodating a deformable sealing ring, the bottom of the piston core is connected with the piston ring, and the piston core is provided with a through hole;

the one-way valve is partially arranged in the through hole, the inlet of the one-way valve is close to the bottom of the piston core, and the outlet of the one-way valve is close to the top of the piston core;

the nut is detachably connected with the piston core; when the nut is connected with the piston core, the nut seals the outlet of the one-way valve, and after the nut is separated from the piston core, the outlet of the one-way valve is exposed from the top of the piston core.

Optionally, a groove is formed in the top of the piston core, the groove is communicated with the through hole, and an outlet of the one-way valve is positioned in the groove;

the sealing piston further comprises a limiting device used for limiting the one-way valve, and the limiting device is arranged between the one-way valve and the inner wall of the groove.

Optionally, the stop device includes spacing ring and supporter, the spacing ring cover is established on the check valve, the one end of supporter is connected the spacing ring, the other end of supporter with the inner wall butt of recess.

Optionally, the outer wall of check valve is equipped with the anti-skidding muscle, the check valve passes through anti-skidding muscle with the inner wall interference fit of spacing ring.

Optionally, the inner wall of recess is equipped with spacing muscle, spacing muscle has the concave structure, the supporter with concave structure butt.

Optionally, the outer wall cover of check valve is equipped with the sealing ring, the check valve inserts behind the through-hole through the sealing ring with the inner wall interference fit of through-hole.

Optionally, the bottom of the piston core has an arcuate surface protruding toward the top of the piston core.

Optionally, a vent groove is further formed in the bottom of the piston core, the vent groove extends from the outer periphery of the piston core to the through hole, and the depth of the vent groove increases from the outer periphery of the piston core to the through hole.

Optionally, the piston core is in threaded engagement with the nut.

The disclosure also provides a glue packaging structure, including packing element, flexible sealing washer and foretell sealing piston, the sealing collar cover is established on the slot of sealing piston, sealing piston passes through the sealing washer with the inner wall interference fit of packing element.

By implementing the scheme, the method has the following beneficial effects:

the groove for installing the deformable sealing ring is formed in the outer peripheral surface of the piston ring, when the sealing piston is installed in the rubber cylinder, the sealing ring is extruded to deform so as to be tightly attached to the sealing piston and the rubber cylinder, the position of the sealing piston can be fixed, a good sealing effect is achieved, and the piston is prevented from tilting or turning on one side in the using process. Through the through hole formed in the piston core, the one-way valve is arranged at the through hole, so that external moisture can be prevented from entering the rubber cylinder, and the glue is prevented from being solidified; and when the internal and external air pressures of the rubber cylinder are inconsistent, the air in the rubber cylinder can be discharged through the one-way valve, so that the situation that the piston is ejected out due to air pressure difference is avoided.

Drawings

FIG. 1 is a schematic structural view of a piston body provided by an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of a piston body provided by an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a piston body provided by an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of another piston body provided by an embodiment of the present disclosure;

FIG. 5 is a top view of a nut provided by an embodiment of the present disclosure;

FIG. 6 is a cross-sectional view of a nut provided by an embodiment of the present disclosure;

fig. 7 is a schematic structural view of a limiting device according to an embodiment of the present disclosure;

fig. 8 is a schematic structural view of a check valve provided in an embodiment of the present disclosure.

In the figure:

100 piston body, 101 piston ring, 102 piston core, 103 groove, 104 through hole, 105 groove, 106 limit rib, 107 concave structure, 108 arc surface, 109 exhaust groove, 110 external thread,

200 one-way valve, 201 inlet, 202 outlet, 203 anti-skid rib, 204 sealing ring,

300, 301, the internal threads,

400 limit devices, 401 limit rings and 402 support bodies.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Example 1

Embodiments of the present disclosure provide a sealing piston for use with a packing element. The sealing piston at least comprises a piston body 100, a one-way valve 200 and a nut 300, wherein the piston body 100 comprises a piston ring 101 and a piston core 102 arranged in the piston ring 101, the outer peripheral surface of the piston ring 101 is provided with a groove 103 for accommodating a deformable sealing ring, the bottom of the piston core 102 is connected with the piston ring 101, and the piston core 102 is provided with a through hole 104. The check valve 200 is partially disposed within the through bore 104 with the inlet 201 of the check valve 200 being near the bottom of the piston core 102 and the outlet 202 of the check valve 200 being near the top of the piston core 102. The nut 300 is detachably connected with the piston core 102; when the cap 300 is coupled to the plunger 102, the cap 300 closes the outlet 202 of the check valve 200, and after the cap 300 is separated from the plunger 102, the outlet 202 of the check valve 200 is exposed from the top of the plunger 102. The structure of the sealing piston will be explained below with reference to fig. 1 to 8.

Referring to fig. 1 to 3, a piston body 100 includes a piston ring 101 and a piston core 102 provided in the piston ring 101. The piston ring 101 and the piston core 102 are of an integrally formed structure.

The outer circumferential surface of the piston ring 101 is provided with grooves 103, the grooves 103 being adapted to receive deformable sealing rings. The piston ring 101 has an annular structure, the groove 103 is an annular groove 103 surrounding the outer peripheral surface of the piston ring 101, and a part of the sealing ring can be accommodated in the groove 103, and the other part of the sealing ring protrudes out of the groove 103. The number of grooves 103 may be set according to practical needs, for example, one annular groove 103 is provided near each end of the piston ring 101, and of course, the groove 103 may be provided in the middle of the piston ring 101 as needed.

The bottom of the piston core 102 is connected to the piston ring 101, the top of the piston core 102 extends toward the other end of the piston ring 101, and the piston core 102 has a through hole 104 penetrating the bottom of the piston core 102. In the structure shown in fig. 4, the bottom of the piston core 102 has an arc surface 108 protruding toward the top of the piston core 102, when the sealing piston is mounted on the rubber cylinder, the arc surface 108 is in direct contact with the inside of the rubber cylinder, and air in the rubber cylinder can be collected into the through hole 104 along the arc surface 108 and then discharged, and the arc surface 108 is designed to guide and discharge the air in the rubber cylinder. In the structure shown in fig. 2, the bottom of the piston core 102 is not only provided with an arc-shaped surface 108, but also provided with an exhaust groove 109, the exhaust groove 109 extends from the outer circumferential through hole 104 of the piston core 102, and the depth of the exhaust groove 109 increases gradually from the outer circumferential through hole 104 of the piston core 102, and air in the rubber cylinder can be converged to the through hole 104 along the exhaust groove 109, so that the air flow guiding effect is improved. In one possible implementation, the top of the piston core 102 is provided with a groove 105, the groove 105 communicates with the through hole 104, and the diameter of the groove 105 is larger than the diameter of the through hole 104, so as to facilitate the installation of the check valve 200 in the through hole 104.

Referring to fig. 8, the check valve 200 has an inlet 201 and an outlet 202, a sealing ring 204 and an anti-slip rib 203 are further disposed on the outer wall of the check valve 200, the sealing ring 204 is disposed between the inlet 201 and the outlet 202 of the check valve 200, the anti-slip rib 203 is disposed between the outlet 202 of the check valve 200 and the sealing ring 204, and specifically, the anti-slip rib 203 is a strip-shaped structure distributed along the length direction of the check valve 200. After the check valve 200 is inserted into the through hole 104, the check valve 200 is in interference fit with the inner wall of the through hole 104 through the sealing ring 204, the inlet 201 of the check valve 200 is close to the bottom of the piston core 102, and the outlet 202 and the anti-slip ribs 203 of the check valve 200 are positioned in the groove 105.

To facilitate the installation of the check valve 200, the through hole 104 and the groove 105 are formed in the piston core 102, so that a portion of the check valve 200 is exposed in the groove 105 without support after being inserted into the through hole 104, which may cause the check valve 200 to tilt. To solve this problem, the sealing piston of the present embodiment further includes a limiting device 400 for limiting the check valve 200, and the limiting device 400 is disposed between the check valve 200 and the inner wall of the groove 105.

Referring to fig. 7, the limiting device 400 includes a limiting ring 401 and a supporting body 402, the limiting ring 401 is sleeved on the check valve 200, and the check valve 200 is in interference fit with the inner wall of the limiting ring 401 through the anti-slip ribs 203; one end of the supporting body 402 is connected with the limiting ring 401, and the other end of the supporting body 402 is abutted against the inner wall of the groove 105. In one possible implementation, as shown in fig. 1, the inner wall of the groove 105 is provided with a limiting rib 106, the limiting rib 106 is provided with a concave structure 107, and the supporting body 402 may abut against the concave structure 107, so that the check valve 200 is stably supported to prevent the check valve 200 from tilting.

As shown in fig. 6, the inner wall of the nut 300 is provided with an internal thread 301, and as shown in fig. 3, the outer wall of the piston core 102 is provided with an external thread 110 which is engaged with the internal thread 301, and the nut 300 is engaged with the piston core 102.

In this embodiment, the groove 103 for installing the deformable sealing ring is formed in the outer peripheral surface of the piston ring 101, when the sealing piston is installed in the rubber cylinder, the sealing ring is extruded and deformed so as to be tightly attached to the sealing piston and the rubber cylinder, the position of the sealing piston can be fixed, a good sealing effect is achieved, and the situation that the piston tilts and turns on one's side in the filling and using stages is prevented. Through the through hole 104 formed in the piston core 102, the one-way valve 200 is arranged at the through hole 104, so that external moisture can be prevented from entering the rubber cylinder, the solidification of glue is avoided, and the storage stability is improved; and when the internal and external air pressures of the rubber cylinder are inconsistent, the air in the rubber cylinder can be discharged through the one-way valve 200, so that the situation that the piston is ejected out due to air pressure difference is avoided.

Example two

The embodiment provides a glue packaging structure, including packing element, flexible sealing washer and embodiment one's sealing piston, the sealing ring snare is established on sealing piston's slot 103, sealing piston passes through sealing washer and the inner wall interference fit of packing element.

The sealing ring is made of fluororubber, and has good elasticity in a high-temperature working environment. The piston main body 100 of the sealing piston is made of PPS plastic and fiber, can resist high temperature, has low water absorption rate, small shrinkage rate and high hardness; the whole sealing piston has a certain thickness and plays roles of supporting and blocking moisture penetration. The size of the outer diameter of the sealing piston with the sealing ring is slightly larger than the size of the inner diameter of the rubber pipe, the sealing piston is in interference fit with the inner wall of the rubber pipe through the sealing ring, the interference is between 0.2mm and 0.5mm, the sealing ring is guaranteed to generate certain extrusion deformation, the position of the piston can be fixed, and meanwhile a good sealing effect is achieved. For different specifications of metal hoses, such as 310ml or 550ml metal hoses, the matching can be performed by manufacturing the piston body 100 with corresponding dimensions.

The assembly process of the sealing piston and the rubber cylinder is as follows: the sealing ring is sleeved on the groove 103 of the piston main body 100, then the piston main body 100 sleeved with the sealing ring is pressed into a metal rubber tube filled with glue, the piston main body 100 is pushed into the rubber tube, air in the rubber tube can be discharged through the through hole 104 on the piston main body 100 in the pushing process until the piston main body 100 contacts the surface of the glue, the check valve 200 is pressed into the through hole 104, the limiting device 400 is sleeved on the check valve 200, the limiting device 400 is rotated until the limiting device 400 abuts against the concave structure 107 on the piston core 102, the check valve 200 is prevented from tilting, and finally the nut 300 is screwed.

When in use, the screw cap 300 is removed, and the glue in the glue cylinder can be extruded by a screw or air pressure mode. After the air pressure sizing is adopted, if the air pressure is inconsistent before and after the sealing piston, the air in the rubber cylinder can be discharged through the one-way valve 200, so that the air pressure tends to be consistent before and after the sealing piston, the situation that the sealing piston is ejected out is prevented, and the use safety is ensured.

The existing metal piston and the sealing piston provided in this example were sealed with a batch of PUR glue in the same environment, then placed in an environment with a temperature of 85 ℃ and a humidity of 85% for accelerated aging, taken out after a certain period of time, all the glue was extruded, and the weight of the glue that had been cured under the influence of moisture was compared with the weight percentage of the whole glue, and the test results are shown in table one. As can be seen from table one, the sealing performance of the sealing piston is significantly better than that of the metal piston.

List one

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. A sealing piston, comprising:

the piston comprises a piston body (100) and a piston core (102) arranged in the piston ring (101), wherein the outer peripheral surface of the piston ring (101) is provided with a groove (103) for accommodating a deformable sealing ring, the bottom of the piston core (102) is connected with the piston ring (101), and the piston core (102) is provided with a through hole (104);

the one-way valve (200) is partially arranged in the through hole (104), an inlet (201) of the one-way valve (200) is close to the bottom of the piston core (102), and an outlet (202) of the one-way valve (200) is close to the top of the piston core (102);

a nut (300) detachably connected to the piston core (102); when the screw cap (300) is connected with the piston core (102), the screw cap (300) seals the outlet (202) of the one-way valve (200), and after the screw cap (300) is separated from the piston core (102), the outlet (202) of the one-way valve (200) is exposed from the top of the piston core (102).

2. The sealing piston according to claim 1, characterized in that a groove (105) is provided at the top of the piston core (102), the groove (105) communicates with the through hole (104), and the outlet (202) of the one-way valve (200) is located in the groove (105);

the sealing piston further comprises a limiting device (400) for limiting the one-way valve (200), and the limiting device (400) is arranged between the one-way valve (200) and the inner wall of the groove (105).

3. The sealing piston according to claim 2, wherein the limiting device (400) comprises a limiting ring (401) and a supporting body (402), the limiting ring (401) is sleeved on the one-way valve (200), one end of the supporting body (402) is connected with the limiting ring (401), and the other end of the supporting body (402) is abutted with the inner wall of the groove (105).

4. A sealing piston according to claim 3, wherein the outer wall of the non-return valve (200) is provided with anti-slip ribs (203), and the non-return valve (200) is in interference fit with the inner wall of the stop collar (401) through the anti-slip ribs (203).

5. A sealing piston according to claim 3, wherein the inner wall of the groove (105) is provided with a limit rib (106), the limit rib (106) is provided with a concave structure (107), and the support body (402) is abutted with the concave structure (107).

6. The sealing piston according to claim 1, wherein the outer wall of the one-way valve (200) is sleeved with a sealing ring (204), and the one-way valve (200) is in interference fit with the inner wall of the through hole (104) through the sealing ring (204) after being inserted into the through hole (104).

7. The sealing piston of claim 1, wherein the bottom of the piston core (102) has an arcuate surface (108) that projects toward the top of the piston core (102).

8. The sealing piston according to claim 1, characterized in that the bottom of the piston core (102) is further provided with a vent groove (109), the vent groove (109) extending from the outer periphery of the piston core (102) to the through hole (104), and the depth of the vent groove (109) increasing from the outer periphery of the piston core (102) to the through hole (104).

9. The sealing piston of claim 1, wherein the piston core (102) is threadedly engaged with the nut (300).

10. The glue packaging structure is characterized by comprising a glue cylinder, a deformable sealing ring and the sealing piston according to any one of claims 1-9, wherein the sealing ring is sleeved on a groove (103) of the sealing piston, and the sealing piston is in interference fit with the inner wall of the glue cylinder through the sealing ring.