Vacuum defoaming filling nozzle for ultrahigh-viscosity materials

Abstract

The utility model provides a vacuum defoaming filling nozzle for ultrahigh-viscosity materials. The vacuum defoaming filling nozzle comprises a first pipe section, a second pipe section and a third pipe section which are sequentially and hermetically connected from top to bottom, a feeding hole is formed in the side wall of the third pipe section, a discharging hole is formed in the lower end of the third pipe section, and the discharging hole adopts a porous design; the guide rod is arranged in the first pipe section, the second pipe section and the third pipe section; and the driving device is arranged at the upper end of the first pipe section and used for driving the guide rod to move up and down. According to the utility model, due to the porous design of the discharge port, the ultra-high-viscosity material close to a solid can be sheared at the discharge port to form a large number of columns, so that bubbles in the material are exposed on the surfaces of the columns and are removed, and the problem that the filling nozzle in the prior art is difficult to realize vacuum bubble removal is solved. In addition, the first pipe section and the guide rod are sealed through the polytetrafluoroethylene corrugated pipe, friction at the sealing position of the guide rod and the first pipe section can be removed, and the problem that metal powder in materials is prone to discoloring due to friction is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filling nozzle technical field, specifically relates to a vacuum bubble removing filling nozzle of super high viscosity material. BACKGROUND

[0002] At present, in the domestic industrial application, the high viscosity material needing vacuum bubble removing treatment mainly is applied to electronic products or new energy field as heat conducting material. This kind of material is essential to ensure the performance of equipment and prolong service life. In these application scenarios, silica gel and composite material containing metal powder component occupy a considerable proportion.

[0003] Specifically, silica gel becomes an ideal heat conducting material selection due to its excellent high and low temperature resistance, good electrical insulation and chemical stability. It is widely used in filling, sealing and protection between electronic components. At the same time, in order to improve the heat conducting performance of silica gel, a certain proportion of metal powder, such as aluminum powder, copper powder, etc. is usually added. These metal powders can significantly improve the thermal conductivity of the material, thereby more effectively dissipating the heat generated during equipment operation.

[0004] At present, the filling nozzle for filling high viscosity material often has weak bubble removing capacity, so that the filling product contains a large amount of bubbles, and the existence of bubbles can seriously affect the heat conducting performance and mechanical strength of silica gel and composite material containing metal powder component, and further affect the quality and reliability of the final product. In addition, the guide rod and the pipe body in the traditional filling nozzle realize movement friction sealing through the sealing ring, and the movement friction of the guide rod can make the metal powder in contact with the guide rod discolor and blacken due to friction, affecting the quality of the filling product.

[0005] Therefore, the two big problems of the metering and filling of such super high viscosity material, i.e. how to remove bubbles and how to avoid discoloration and blackening of metal powder, are technical problems to be solved in the field. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at overcoming the defects of prior art, and provides a vacuum bubble removing filling nozzle of super high viscosity material, which can solve the problems that the filling nozzle in prior art is difficult to realize vacuum bubble removing, and the metal powder in material is easy to discolor and blacken due to friction.

[0007] In order to achieve the above object and other objects, the utility model is through including following technical scheme realizes: as first aspect, the utility model provides a vacuum bubble removal filling nozzle, including first pipe section, second pipe section and third pipe section sealed connection from up to down in proper order, the lateral wall of third pipe section is provided with feed port, and the lower extreme is provided with discharge port, adopts the design of multiple holes to discharge port, guide rod, set up in first pipe section, second pipe section and third pipe section, drive arrangement, set up in the upper end of first pipe section, is used for driving guide rod up and down motion.

[0008] In an embodiment, the vacuum bubble removal filling nozzle further comprises a bellows made of polytetrafluoroethylene material, which is sleeved on the guide rod; the upper end of the bellows is fixedly installed on the upper end of the first pipe section, and the lower end is fixed on the guide rod.

[0009] In an embodiment, the guide rod is provided with a blocking ring below the bellows.

[0010] In an embodiment, an O-ring is arranged between the bellows and the first pipe section.

[0011] In an embodiment, the inner diameter of the second pipe section is smaller than that of the third pipe section.

[0012] In an embodiment, the feed port of the third pipe section is a downwardly inclined pipeline.

[0013] In an embodiment, the drive device is an ultra-thin air cylinder fixedly installed above the first pipe section through a connecting sleeve and a supporting rod, and the connecting sleeve is sealingly connected with the first pipe section through a quick-mounting clamp.

[0014] In an embodiment, the push rod of the drive device is connected with the guide rod through a floating joint.

[0015] In an embodiment, the multiple holes of the discharge port are arranged in a ring array with a center hole as the center.

[0016] In an embodiment, the guide rod comprises a first guide rod and a second guide rod, the upper end of the first guide rod is connected with the drive device, the main body is located in the first pipe section, and the lower end is fixedly connected with the upper end of the second guide rod through a connecting piece; the main body of the second guide rod is located in the third pipe section, and the lower end is fixedly connected with a plug.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The multi-hole design of the discharge port can form a large number of columns by shearing the ultra-high viscosity material close to solid in the discharge port. Since the entire pipe section is in a continuous negative pressure state, the air bubbles existing in the material will be exposed to the surface of the column when the ultra-high viscosity material is sheared, and be excluded, solving the problem that the existing technology is difficult to realize vacuum defoaming of the filling nozzle;

[0019] 2. The polytetrafluoroethylene corrugated pipe is used for sealing between the first pipe section and the guide rod, which can remove the friction between the guide rod and the sealing part of the first pipe section, and solve the problem that the metal powder in the material is easy to discolor due to friction;

[0020] 3. The O-ring design can strengthen the sealing effect between the corrugated pipe and the first pipe section;

[0021] 4. The inner diameter of the second pipe section is smaller than that of the third pipe section, so that a pressure reduction area is formed between the first pipe section and the third pipe section, the pressure of the material is ensured to go to the discharge port, thereby reducing the pressure on the corrugated pipe, and avoiding damage to the corrugated pipe due to pressure impact;

[0022] 5. The feeding port is arranged obliquely downward, which can further ensure that the pressure of the material goes to the discharge port, thereby reducing the pressure on the corrugated pipe, and avoiding damage to the corrugated pipe due to pressure impact. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 The figure shows a three-dimensional structure schematic diagram of the vacuum defoaming filling nozzle for ultra-high viscosity material.

[0024] Fig. 2 The figure shows a cross-sectional schematic diagram of the vacuum defoaming filling nozzle for ultra-high viscosity material.

[0025] Fig. 3 The figure shows a structure schematic diagram of the discharge port.

[0026] In the figure: 10, first pipe section; 20, second pipe section; 30, third pipe section; 31, feeding port; 32, discharge port; 321, hole; 40, guide rod; 40a, first guide rod; 40b, second guide rod; 41, corrugated pipe; 42, retaining ring; 43, plug; 50, driving device; 51, push rod; 52, floating joint; 61, connecting sleeve; 62, support rod; 71, quick-mounting clamp; 72, O-ring. DETAILED DESCRIPTION

[0027] Please refer to Figs. 1-3 The embodiments of the present application will be described below through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0028] It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of the person skilled in the art, and do not have technical substantive significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0029] In the present application, the serial numbers of the components, such as "first", "second" and the like, are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" in the present application includes direct and indirect connection unless otherwise specified. The term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0030] As shown in Figs. 1-2 The present application provides a vacuum defoaming filling nozzle for super high viscosity material, which can be used for filling of super high viscosity material, especially for super high viscosity material with metal powder. The vacuum defoaming filling nozzle comprises a first pipe segment 10, a second pipe segment 20 and a third pipe segment 30 from top to bottom. The first pipe segment 10, the second pipe segment 20 and the third pipe segment 30 are sealingly connected, which can adopt a split structure connected by a quick mounting clamp 71, or can be integrally formed. A guide rod 40 is arranged in the first pipe segment 10, the second pipe segment 20 and the third pipe segment 30. An upper end of the first pipe segment 10 is provided with a driving device 50 for driving the guide rod 40 to move up and down. A side wall of the third pipe segment 30 is provided with a feeding port 31, and a lower end is provided with a discharging port 32. An end of the guide rod 40 close to the discharging port 32 is provided with a plug 43. When the driving device 50 drives the guide rod 40 to move downward in the first pipe segment 10, the second pipe segment 20 and the third pipe segment 30, the plug 43 realizes the plugging of the discharging port 32, at this time, it is in the feeding state. When the driving device 50 drives the guide rod 40 to move upward in the first pipe segment 10, the second pipe segment 20 and the third pipe segment 30, the plug 43 unblocks the discharging port 32, at this time, it is in the discharging state.

[0031] The upper end of the first pipe section 10 is fixedly installed with a drive device 50, such as an ultra-thin cylinder, through a connecting sleeve 61 and a support rod 62. The connecting sleeve 61 is sealed to the first pipe section 10 through a quick-release clamp 71. The push rod 51 of the ultra-thin cylinder is connected to the guide rod 40 through a floating joint 52, so as to drive the guide rod 40 to move up and down in the first pipe section 10, the second pipe section 20 and the third pipe section 30 to open or close the discharge port 32. The first pipe section 10 is used to seal the material. To prevent the material from being carried away from the first pipe section 10 by the up-and-down movement of the guide rod 40, a bellows 41 can be installed inside the first pipe section 10. The bellows 41 is made of polytetrafluoroethylene and is sleeved on the guide rod 40. The upper end is fixedly installed on the upper end of the first pipe section 10 and abuts against the connecting sleeve 61. The lower end is fixed on the guide rod 40 and is located above the retaining ring 42 of the guide rod 40. This ensures that the part of the guide rod 40 above the retaining ring 42 never comes into contact with the material, preventing the material from being carried away from the first pipe section 10 by the up-and-down movement of the guide rod 40, thus achieving a material seal between the guide rod 40 and the first pipe section 10. Furthermore, the seal between the bellows 41 and the first pipe section 10 is strengthened by an O-ring 72. When the ultra-thin cylinder pushes the guide rod 40 to move up and down, the bellows 41 has sufficient elasticity and can move longitudinally under the drive of the retaining ring 42. This not only reduces the friction of the metal powder in the material, but also ensures the mobility of the guide rod 40. Compared with the traditional method of sealing by friction between the guide rod 40 and the sealing ring, the bellows 41 in contact with the material only deforms, which can reduce the discoloration and blackening of the metal powder caused by friction.

[0032] Due to the high viscosity of the material, a hydraulic press is generally used to force the material into the third pipe section 30 from the inlet 31. Because of the high pressure, the material tends to rise within the third pipe section 30. When the pressure becomes excessive, it can damage the bellows 41, causing the seal of the first pipe section 10 to fail. Therefore, a second pipe section 20 for pressure reduction is needed between the first pipe section 10 and the third pipe section 30. Specifically, the inner diameter of the second pipe section 20 is smaller than the inner diameters of the first pipe section 10 and the third pipe section 30. This reduces the pipe diameter, creating a pressure-reducing zone between the inlet 31 and the first pipe section 10. This prevents the material from rising and also reduces the pressure resistance requirements of the bellows 41.

[0033] The feed inlet 31 of the third pipe section 30 is a downward-sloping pipe. The angle design of the feed inlet 31 further prevents material from flowing upwards. Please refer to... Fig. 3The lower end of the third pipe section 30 is provided with a discharge port 32, the discharge port 32 is designed as a plurality of holes, the hole 321 can be a round hole, a plurality of holes 321 are arranged in a ring array with the center hole as the center, the super high viscosity material is generally close to solid, under the extrusion of gravity and the upper material, the super high viscosity material is cut into a plurality of columns through the multi-hole discharge port 32, because the whole pipe section is in a continuous negative pressure state, the bubbles in the super high viscosity material are exposed to the surface of the column when the super high viscosity material is cut, and are discharged, therefore, the smaller the hole diameter of the hole 321 is, the better the bubble removing effect is.

[0034] It should be noted that, because the vacuum bubble removing filling nozzle of the super high viscosity material is relatively long as a whole, in order to facilitate production and assembly, the first pipe section 10, the second pipe section 20 and the third pipe section 30 are preferably designed as a split structure, and the third pipe section 30 can be split into two pipe sections, namely a three-way valve with the feeding port 31 pipe and a long straight pipe with the multi-hole discharge port 32; the guide rod 40 can be designed as a split structure, including a first guide rod 40a and a second guide rod 40b, the upper end of the first guide rod 40a is connected with the floating joint 52, the main body provided with the retaining ring 42 is located in the first pipe section 10, and the lower end is fixedly connected with the upper end of the second guide rod 40b through a connecting piece; the main body of the second guide rod 40b is located in the third pipe section 30, and the lower end is fixedly connected with the plug 43.

[0035] Therefore, the present application effectively overcomes the shortcomings of the prior art and has high industrial utilization value. The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed by the present application should be covered by the claims of the present application.

Claims

1. A vacuum deaeration filler nozzle for ultra-high viscosity materials, characterized in that, Comprising The first pipe section, the second pipe section and the third pipe section are sequentially sealed and connected from top to bottom; the side wall of the third pipe section is provided with a feeding port, and the lower end is provided with a discharging port, which is designed as a plurality of holes; A guide rod is arranged in the first pipe section, the second pipe section and the third pipe section; A driving device is arranged at the upper end of the first pipe section for driving the guide rod to move up and down.

2. The vacuum defoaming filler nozzle for ultra-high viscosity materials according to claim 1, characterized in that, A bellows made of polytetrafluoroethylene is further arranged on the guide rod; the upper end of the bellows is fixedly installed at the upper end of the first pipe section, and the lower end is fixed on the guide rod.

3. The vacuum defoaming filler nozzle for ultra-high viscosity materials of claim 2, wherein, A stop ring is arranged on the guide rod, which is located below the bellows.

4. The vacuum defoaming filler nozzle for ultra-high viscosity materials of claim 2, wherein, An O-ring is arranged between the bellows and the first pipe section.

5. A vacuum defoaming filler nozzle for ultra-high viscosity materials according to claim 1 or 2, characterized in that, The inner diameter of the second pipe section is smaller than that of the third pipe section.

6. The vacuum de-bubble filler nozzle of claim 1, wherein, The feeding port of the third pipe section is a downwardly inclined pipe.

7. The vacuum defoaming filler nozzle for ultra-high viscosity materials of claim 1, wherein, The driving device is an ultra-thin air cylinder, which is fixedly installed above the first pipe section through a connecting sleeve and a supporting rod, and the connecting sleeve is sealingly connected with the first pipe section through a quick-mounting clamp.

8. The vacuum defoaming filler nozzle for ultra-high viscosity materials of claim 7, wherein, The push rod of the driving device is connected with the guide rod through a floating joint.

9. The vacuum defoaming filler nozzle for ultra-high viscosity materials of claim 1, wherein, The plurality of holes of the discharging port are arranged in a ring array with a center hole as the center.

10. The vacuum defoaming filler nozzle for ultra-high viscosity materials of claim 1, wherein, The guide rod comprises a first guide rod and a second guide rod; the upper end of the first guide rod is connected with the driving device, the main body is located in the first pipe section, and the lower end is fixedly connected with the upper end of the second guide rod through a connecting piece; the main body of the second guide rod is located in the third pipe section, and the lower end is fixedly connected with a plug.

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