CN203889338U - Container for viscous fluid - Google Patents

Abstract

The present invention relates to a container for viscous fluids, and more particularly to a fluid packaging container with a deformable piston, which is simple in structure and can completely empty the container. The container comprises a cylinder body and a piston positioned in the cylinder body, wherein the head parts of the piston and the cylinder body are truncated cones, the included angle alpha between the inclined plane of the cone body of the piston and the horizontal plane is smaller than the included angle beta between the head part of the cylinder body and the horizontal plane, the container can also select the power source mode of fluid discharge according to needs, and one or more components of a fluid groove on a head cover, a spatula on the piston, a sealing ring, a unsealing pull wire of a skirt part of a tail cover, a pressure limiting valve, scales on the cylinder body, the tail cover and the like are added, and the container can completely discharge viscous fluid in.

Description

A container for viscous fluids

technical field

The invention relates to a container capable of completely draining viscous fluid, in particular to a container with simple structure and a deformable piston that can completely drain high viscosity. the

Background technique

The prior art also includes storage containers for various special high-viscosity fluids, all of which have defects of varying degrees, including the inability to completely drain the fluid, complex structure, high cost, and the like. For example, Chinese patent CN100515767C discloses a vacuum pneumatic fluid container that can mechanized filling during fluid production, vacuum packaging storage, and pneumatic ink extraction during printing. The exhaust column communicates with the rear cavity, which is convenient for air to be discharged. This structure has several problems: the fluid cannot be completely drained, including residues in the ink guide groove, and the fluid on the top of the piston is pressed in the box due to uneven extrusion and cannot be discharged; the structure is complex, in order to drain Adding air guide grooves and ink guide grooves for air or fluid will increase production costs, and there will also be problems of clogging; it cannot be discharged according to the amount; it only supports pneumatic, and it is not compatible with printing machines that are inconvenient to use compressed air; fluid When the container is stored in large quantities, it is not flat because there is an air inlet at the bottom, which makes it inconvenient to place the container.

Contents of the invention

The object of the present invention is to provide a container that can completely drain viscous fluids, and in particular to a container that can completely drain viscous fluids with a simple structure and a deformable piston. Sequential deformation to completely drain the fluid.

The purpose of the present invention is also to provide a fluid box with a scale and a limited amount of discharge. When the fluid is not used up and needs to be sealed again, the area corresponding to the fluid discharge port of the cylinder is provided with an inner diameter slightly larger than the discharge port. The accommodating groove is used to receive part of the fluid extruded by the deformation of the piston to prevent this part of the fluid from being squeezed out and diffused to the outer surface of the cylinder top due to the closure of the top cover when the top cover is closed, resulting in waste and no waste. Easy to clean up.

The fluid container of the present invention includes a cylinder body and a piston located in the cylinder body. The piston is a truncated cone (also known as a truncated cone or a truncated cone) made of elastic material with a flat top surface. The generatrix on the slope and the bottom surface The angle between them is α, the top of the cylinder is also a truncated cone, the angle between the generatrix on the top slope and the bottom surface of the top is β, where 0°<β-α<90°, this structure makes the piston In the final stage of discharging fluid under uniform thrust, it will contact the inner wall of the top of the cylinder in order from the periphery to the center and deform. The difference between (β-α) is related to the deformability of the piston. The larger the angle difference requires the greater the deformability to ensure complete exhaustion in the final fluid discharge stage, preferably 3°≤β-α≤15 °. The top surface area of the piston truncated cone is S ₁ , and the top surface area of the cylinder top is S ₂ . The different sizes of the two areas have different requirements for piston elasticity, preferably S ₁ ≤ _{S 2} . It should be noted that the piston of the present invention is not limited to this deformation mode when the fluid is exhausted. The deformation mode corresponds to the shape of the piston and the shape of the top of the matching cylinder. For example, the shape of the piston and the top of the cylinder can also be set. The shape is a slope with different inclination angles, a tetrahedron, etc. In this case, the deformation of the piston is to deform and squeeze the fluid from one side to the other.

In another preferred embodiment, the outer side of the piston close to the top of the cylinder is provided with an annular fluid scraper that rolls outward. The fluid scraper is made of high-strength materials such as plastic and metal. When the piston moves toward the top of the cylinder At this time, the fluid scraper with a hardness higher than that of the piston will provide greater scraping force to scrape off the fluid on the wall of the fluid container and be pushed out by the piston. In order not to generate residue at the fluid scraper in the final stage of fluid discharge, the height of the fluid scraper needs to be less than the height of the piston frustum, preferably ≤2mm, so as to ensure that it can be filled by the piston during the deformation stage of the piston.

In another preferred embodiment, a ring sealing ring is provided between the side wall of the piston and the inner wall of the barrel to improve the sealing degree of the rear cavity of the barrel of the fluid container.

In another preferred embodiment, multiple sealing rings are provided between the side wall of the piston and the inner wall of the cylinder to further improve the sealing degree of the rear cavity of the fluid container cylinder.

In another preferred embodiment, the fluid container is provided with a top cover for closing the fluid outlet, and the top cover and the cylinder body can be connected in common ways such as threaded connection and hinged connection (not shown in the figure).

In another preferred embodiment, the area of the top cover of the fluid container corresponding to the fluid outlet of the barrel is provided with an accommodating groove with an inner diameter not smaller than the outlet. In the process of discharging the fluid, according to Newton's third law, when the piston exerts force on the fluid to discharge it, the piston will be subjected to the reaction force of the fluid, and the volume of the elastic piston will become smaller under the reaction force of the fluid, while When the power to discharge the high-viscosity fluid is stopped, the piston will restore its original volume due to its own elasticity, and this deformation will squeeze a small amount of high-viscosity fluid out of the discharge port after the power is stopped. The faster the high-viscosity fluid is discharged, the greater the force, and the greater the deformation of the piston, and the greater the volume of the fluid that is squeezed out of the discharge port by the deformation of the piston. And because the viscosity of the fluid is very high, this part of the fluid is not enough to drip, but can only protrude out of the discharge port, plus a small amount of fluid that is retracted due to fluid tension when the fluid is stopped, so that it is finally in the discharge port. Protruding residual high-viscosity fluid is more. The function of the accommodating groove in the top cover is to receive the part of the fluid extruded by the deformation of the piston during the closing process of the top cover, and prevent this part of the fluid from being squeezed out and diffused to the outside of the top of the cylinder due to the closing of the top cover. surface, wasteful and difficult to clean.

There is a material coating (not shown) that does not bind high-viscosity fluid in the holding tank and does not interact with the fluid or interacts with the fluid at a very low rate to reduce the possibility of affecting the fluid composition. The coating is It can be a nano-coating containing special materials, or a common fluorotron layer or foil layer. The connection methods of the coating include direct coating, lamination, welding, adhesive, etc., and the effects include dissolution, penetration, chemical reaction etc.

The surface of the piston adjacent to the front cavity and the inner wall of the barrel are also coated with a material (not shown) that does not bind the fluid and does not interact with the fluid or interacts with the fluid at a very low rate to reduce the impact The possibility of fluid composition, the coating can be a nano-coating containing special materials, or a common fluorotron layer, foil layer, etc. The connection methods of the coating include direct coating, lamination, welding, and adhesive Etc., the effect that takes place includes dissolution, penetration, chemical reaction, etc.

It should be noted that there is no specific exclusive relationship between the characteristics of all the above-mentioned embodiments, and they can be modified and combined into new embodiments in a common way according to needs, so as to form different requirements. For fluid containers, for example, one or more of the accommodating groove on the top cover, the fluid scraper, the sealing ring, the material coating on the inner wall of the piston and the cylinder, and the tail cover can be eliminated to form a specific functional advantage and a certain cost advantage Many other embodiments of etc.

Description of drawings

Fig. 1 is a front cross-sectional view of Embodiment 1 of the present invention, which includes a pneumatic and manual discharge structure, a tail cap, a fluid scraper, a sealing ring, an unpacking pull wire, a pressure limiting valve, and an accommodating tank;

Fig. 2 is the enlarged schematic diagram of seal ring and fluid scraper in Fig. 1;

Fig. 3 is the schematic diagram of the scale on cylinder body in another embodiment of the present invention;

Figure 4 is an enlarged schematic view of the top cover in Figure 1;

5a, 5b, 5c are schematic diagrams of tail caps in different embodiments of the present invention;

Fig. 6a, 6b, 6c, 6d, 6e are the schematic diagrams of fluid discharge process in embodiment 1;

Fig. 7 is the fluid schematic diagram that is extruded out of the discharge port and drawing retracted because of the deformation of the piston in the embodiment of the present invention;

Figures 8a and 8b are schematic diagrams of the fluid in Figure 7 being squeezed out when the top cover without the holding tank is closed;

In the figure, 1. fluid container, 2. cylinder, 3. cylinder inner wall, 4. cylinder side wall, 5. cylinder top, 6. cylinder tail, 7. depression, 8. front cavity, 9 . Rear cavity, 10. Top cap, 11. Axial, 12. Tail cap, 13. Tail cap skirt, 14. Tail cap edge, 15. Weakened part, 16. Top cap thread, 17. Discharge port, 18 . Top top surface, 19. Top slope, 20. Top bottom surface, 21. Accommodating groove, 22. Fluid scraper, 23. Seal ring, 24. Piston, 25. Piston top surface, 26. Piston slope, 27. Piston Side wall, 28. Piston bottom surface, 29. Piston back, 30. Push rod, 31. Rear cavity content, 32. Fluid, 33. Tail cap thread, 34. Air inlet, 35. Safety pressure limiting valve, 36. Scale, 37. Protruding Fluid, 38. Bottom of End Cap.

Detailed ways

The specific implementation of the vacuum pneumatic fluid container will be further described in detail below in conjunction with the accompanying drawings. the

As shown in FIGS. 1-2 and 6-7c, the fluid container 1 of the present invention includes a cylinder body 2 , a top cover 10 and a tail cover 12 . Cylinder 2 comprises cylinder inner wall 3 and cylinder side wall 4 again, and according to the direction when using, cylinder 2 comprises cylinder top 5 and cylinder tail 6, and top 5 is made up of top top surface 18, top slope 19, The top and bottom surfaces are 20 components. The cylinder inner wall 3 has a piston 24 that can slide axially 11 in the cylinder inner wall. The piston 24 includes a piston top surface 25, a piston slope 26, a piston side wall 27, a piston bottom surface 28, and a piston back 29. There is a fluid scraper 22 at the joint between the piston slope 26 and the cylinder inner wall 3 , a sealing ring 23 is located between the piston side wall 27 and the cylinder inner wall 3 , and a push rod 30 is connected to the piston back 29 . The piston 24 divides the space formed by the inner wall 3 of the barrel into a front cavity 8 and a rear cavity 9. The fluid 32 is stored in the front cavity 8 and has a discharge port 17, which is closed by a top cover 10. The rear cavity 9 There is rear cavity putting thing 31 in it, and rear cavity 9 is closed by tail cap 12. The top cover 10 is threadedly connected with the cylinder body through the top cover thread 16 , and there is an accommodating groove 21 in the top cover 10 corresponding to the fluid outlet 17 . The tail cap 12 includes a tail cap skirt 13 and a tail cap edge 14, the tail cap skirt 13 is provided with a weakened portion 15 near the tail cap edge 14, the tail cap 12 is threadedly connected with the cylinder side wall 4 through the tail cap thread 33 , The tail cap bottom surface 38 of the tail cap 12 is also provided with an air inlet 34 and a safety pressure limiting valve 35 .

In the embodiment shown in FIG. 3 , there is a scale 36 on the side wall 4 of the barrel, and the user can read the reading by observing the fluid spatula 22 .

As shown in FIG. 4 , the top cover 10 includes a receiving groove 21 .

In the various embodiments shown in Figures 5a-5c, the one shown in 5a is a manual exhaust type tail cap; the one shown in 5b is a pneumatic exhaust type tail cap, and the air inlet 34 and the pressure limiting valve 35 are located in the cylinder body On the side wall 4; 5c shows a hand-air dual-power tail cover, and the air inlet 34 and the pressure limiting valve 35 are located in the depression 7 of the bottom surface 38 of the tail cover.

As shown in Figures 6a-6d, 6a is the initial state of the fluid container; 6b is the state where nearly half of the fluid is discharged; 6c is the state where most of the fluid is discharged; 6d is the intermediate state where the piston deforms to squeeze out the remaining fluid; The exhausted state, where 6c-6e is the final stage of fluid exhaustion.

As shown in FIG. 7 , the protruding fluid 37 on the outlet 17 is discharged.

8a-8b, 8a is the initial state when the top cover 10 without the accommodating groove 17 closes the fluid container;

The method of using the container in Fig. 1 will now be described, and the discharge method can be selected according to needs during use. When selecting the manual mode, tear off the unpacking pull wire, open the tail cover 12, hold the push rod 30 with your hand, and push the fluid out until the fluid is exhausted; when selecting the pneumatic mode, pass the compressed air through the air inlet 34 on the tail cover 12 , turn on the compressed air switch, the compressed air will push the piston to discharge the fluid. When it is necessary to discharge all the fluid, you can push the push rod until it cannot be pushed or the safety pressure relief valve starts to leak; when it is not necessary to discharge all the fluid, you can judge the current discharge volume of the fluid according to the scale 36. After measuring, stop pushing the push rod 30 or turn off the compressed air switch, then use the top cover 10 with the accommodation groove 17 to close the fluid container, and put the tail cover 12 on.

The above descriptions are only some embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (3)

1. A container for viscous fluid, which can completely drain the viscous fluid in the container, comprising a cylinder and a piston located in the cylinder, characterized in that: the piston is a plane section with a top surface made of elastic material Cone, the angle between the inclined plane and the horizontal plane is α, the top of the cylinder is also a truncated cone, the angle between the inclined plane and the horizontal plane is β, 3°≤β-α≤15, the tail of the cylinder is equipped with a tail cap, the tail cap There is an unpacking pull wire at the edge of the skirt surrounding the side wall of the cylinder, and a manual push rod connected to the piston is provided in the tail cover, and there is an air inlet and a safety pressure limiting valve on the tail cover. 2 . The container for viscous fluid according to claim 1 , characterized in that, the area of the top cover of the container corresponding to the fluid discharge port of the cylinder is provided with an accommodating groove with an inner diameter not smaller than the discharge port. 3 . 3. The container for viscous fluid according to claim 1 or 2, characterized in that, the outer side of the piston close to the top of the cylinder is provided with an annular spatula rolled outward. the