A scalable explosive bead forming drop head
By designing an adjustable mechanism and Tesla flow channel for a retractable bursting bead forming nozzle, the problem of matching the nozzle with the overflow device was solved, preventing backflow and blockage of the adhesive, improving production efficiency and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN YELLOW CRANE TOWER NEW MATERIAL TECH DEV
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-21
AI Technical Summary
In existing popping bead production equipment, matching the dripper with the overflow device is difficult, resulting in complicated equipment debugging, backflow of adhesive clogging the essential oil channel, frequent maintenance, low production efficiency, and high spare parts consumption.
A retractable bursting bead forming nozzle is designed. The outlet position of the concentric flow column channel can be adjusted by an adjustment mechanism. Combined with a sealing ring and Tesla flow channel, it enables rapid equipment debugging and prevents backflow of adhesive, thereby reducing maintenance frequency and cost.
It enables easy matching of drippers and overflow devices, reduces equipment debugging time and maintenance frequency, reduces spare parts consumption and production interruption, and improves production efficiency.
Smart Images
Figure CN224524713U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of burst bead processing technology, specifically to a retractable burst bead forming dropper. Background Technology
[0002] The commonly used method for industrializing the preparation of popping beads is the concentric film-forming method. The concentric nozzle of the dripping machine sprays the outer layer of adhesive liquid and the inner layer of essential oil at different speeds. The outer layer of adhesive liquid encapsulates a certain amount of the inner layer of essential oil and then drips into another immiscible cooling liquid to solidify and form a shape. After subsequent solidification, cleaning, drying, screening and other processes, the finished popping beads are finally obtained.
[0003] The current production principle of popping beads is that the adhesive and essential oil enter the concentric flow column channel from the adhesive cavity and essential oil channel of the dropper respectively to form a concentric flow column. At the outlet of the concentric flow column channel of the dropper, a pulsed ring cutting force is applied to make the concentric flow column be evenly and quickly separated into short columnar droplets. The short columnar droplets enter the immiscible coolant and condense and shrink into wet pellets under the action of surface tension. After flowing, they enter the collection tank.
[0004] In the production of popping beads, there is an operation to match the dripper with the overflow device. Traditional equipment can only lift the overflow device with great effort, which will affect the height difference and cause changes in the flow rate in the pipeline, thus resulting in more harm than good and affecting production.
[0005] Because the adhesive has a high viscosity, when the equipment starts up or the pressure fluctuates (such as the adhesive pump starting early or stopping and depressurizing), the adhesive may flow backward into the essential oil channel through the concentric flow column channel. Due to the minute size of the essential oil channel (the inner diameter of the essential oil channel is usually 0.8mm to 1mm) and the rapid curing of the adhesive, the backflowing adhesive will form a hard blockage in the essential oil channel, leading to the following consequences: Repair time: To unclog a single blockage, fill the drip head with clean water and then rinse it with an air gun. If the blockage is severe, it needs to be disassembled and cleaned. Spare parts wear and tear: Frequent disassembly of the dripper head will damage the threaded holes on the acrylic dripper head and accelerate the aging of the sealing ring. The cost of a single dripper head is 3,000 yuan per unit. Production interruption: Based on two blockages per month, each cleaning cycle results in an average downtime of one hour, delaying production. Traditional solutions have limitations. For example, mechanical check valves suffer from valve core wear leading to seal failure, resulting in an average lifespan of less than 6 months. Furthermore, they have relatively narrow essential oil channels and poor adaptability. If electromagnetic control is used, the cost is high (>2000 yuan / set) and installation is troublesome. Low production efficiency: Downtime for cleaning due to backflow occurs 2-3 times per month, resulting in a loss of over 10% in production capacity. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide a retractable burst bead forming dropper to overcome the shortcomings of the prior art.
[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A retractable burst bead forming dropper includes: a top seat and a base. The lower end of the top seat has an oil injection section that is vertically distributed and narrowed into a column shape. The oil injection section has an essential oil channel with an outlet passing through its lower end face and an inlet communicating with an oil injection hole on the side of the top seat. A glue cavity is opened on the upper end face of the base, and an glue injection hole communicating with the glue cavity is opened on the side of the base. A concentric flow column channel passing through the lower end face of the base is opened at the bottom of the glue cavity. The lower end of the oil injection section enters the glue cavity and the outlet of the essential oil channel is aligned with the inlet of the concentric flow column channel. The top seat and the base are connected by an adjustment mechanism that adjusts the position of the outlet of the concentric flow column channel by moving it up and down.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the lower end face of the top seat has a columnar part surrounding the oil injection part, the outer circumferential surface of the columnar part has external threads, the inner wall of the glue cavity at the inlet has internal threads, and the external threads of the columnar part and the internal threads of the glue cavity are threadedly connected to form an adjustment mechanism.
[0010] Furthermore, the adjustment mechanism adjusts the travel range of the concentric flow column channel outlet position by ±5mm using the upper and lower adjustment methods.
[0011] Furthermore, a sealing ring is provided between the lower end face of the top seat and the upper end face of the base, which surrounds the columnar portion and is used to compensate for the gap.
[0012] Furthermore, the sealing ring is a fluororubber dynamic sealing ring.
[0013] Furthermore, the adhesive cavity consists of an upper cylindrical cavity and a lower conical cavity. The inner wall of the cylindrical cavity has internal threads, and the inlet of the concentric flow column channel is located at the lowest point of the conical cavity.
[0014] Furthermore, the inner diameter of the essential oil channel is 0.8mm to 1mm.
[0015] Furthermore, the essential oil channel features a Tesla flow channel in the area near the exit.
[0016] Furthermore, the lower end of the base narrows into a columnar structure.
[0017] The beneficial effects of this utility model are: 1) By introducing an adjustment mechanism to connect the top seat and the base, and by adjusting the position of the concentric flow column channel outlet with up and down, the dripper can be matched with the overflow device without changing the height difference between the two, thus controlling a single variable and quickly completing the equipment commissioning. 2) The external thread of the columnar part is threadedly connected to the internal thread of the glue cavity to form an adjustment mechanism. During the adjustment process, only the base needs to be rotated in the forward and reverse directions. The adjustment is convenient and can achieve stepless adjustment. 3) There is a sealing ring around the columnar part between the lower end face of the top seat and the upper end face of the base. The sealing ring is used to compensate for the gap generated during the adjustment process. 4) The essential oil channel is designed with a Tesla flow channel. When the glue pump depressurizes abnormally, the backflowing glue enters the side branch channel of the Tesla flow channel and forms a vortex. The resistance increases sharply, and the backflow is physically blocked, which can prevent the glue from flowing back into the only channel, reduce the number of maintenance and the debugging time, thereby saving costs and not affecting production capacity. Since the glue will not flow back into the essential oil channel, it is also convenient to start the equipment. Attached Figure Description
[0018] Figure 1 This is a structural diagram of the retractable burst bead forming dropper of this utility model; Figure 2 This is a cross-sectional view of the retractable burst bead forming dropper of this utility model; Figure 3 This is a first-view exploded view of the retractable bursting bead forming dropper of this utility model; Figure 4 This is a second-view exploded view of the retractable bursting bead forming dropper of this utility model.
[0019] The attached diagram lists the components represented by each number as follows: 1. Top seat, 110. Oil filling part, 111. Essential oil channel, 120. Oil filling hole, 2. Base, 210. Adhesive cavity, 220. Adhesive filling hole, 230. Concentric flow column channel, 3. Columnar part, 310. External thread, 4. Internal thread, 5. Tesla flow channel, 6. Sealing ring. Detailed Implementation
[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0021] Example 1 like Figures 1-4 As shown, a retractable burst bead forming nozzle includes: The top seat 1 and the base 2 are provided. The lower end of the top seat 1 has an oil filling part 110 that is vertically distributed and narrowed into a column shape. The oil filling part 110 has an essential oil channel 111. The inlet of the essential oil channel 111 is connected to the oil filling hole 120 on the side of the top seat 1, and the outlet of the essential oil channel 111 passes through the lower end face of the oil filling part 110. A glue cavity 210 is opened on the upper surface of the base 2, and a glue injection hole 220 communicating with the glue cavity 210 is opened on the side of the base 2. A concentric flow column channel 230 penetrating the lower surface of the base 2 is opened at the bottom of the glue cavity 210. The lower end of the oil filling section 110 enters the glue chamber 210, and the outlet of the essential oil channel 111 is directly opposite the inlet of the concentric flow column channel 230. The top seat 1 and the base 2 are connected by an adjustment mechanism that adjusts the position of the outlet of the concentric flow column channel 230 from above and below. It can also be understood that the top seat 1 and the base 2 are connected by an adjustment mechanism that adjusts the position of the lower end face of the base 2 from above and below. The reason is that the outlet of the concentric flow column channel 230 passes through the lower end face of the base 2.
[0022] When the top seat 1 and the base 2 are assembled together, the essential oil is in the center and the adhesive is in the outer ring, forming a concentric flow column in the concentric flow column channel 230. Under the action of gravity or auxiliary external force, the flow column is broken into sections and dripped into the coolant. The adhesive quickly solidifies in the coolant, encapsulating the essential oil inside to form a bursting bead.
[0023] Example 2 like Figures 1-4 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: The lower end face of the top seat 1 has a columnar part 3 surrounding the oil filling part 110, and the outer peripheral surface of the columnar part 3 has an external thread 310, while the inner wall of the glue cavity 210 at the inlet has an internal thread 4. The external thread 310 of the columnar part 3 and the internal thread 4 of the glue cavity 210 are threadedly connected to form an adjustment mechanism. During the adjustment process, only the base 2 needs to be rotated in the forward and reverse directions, which is convenient and can achieve stepless adjustment.
[0024] Furthermore, the adjustment mechanism can adjust the stroke range of the concentric flow column channel 230 outlet position by ±5mm by adjusting the upper and lower strokes. This stroke range can match the actual needs. Of course, if the stroke changes, the design length of the internal thread 4 and the external thread 310 can be changed.
[0025] Example 3 like Figures 1-4 As shown, this embodiment is a further improvement on embodiment 2, as detailed below: A sealing ring 6 is provided between the lower end face of the top seat 1 and the upper end face of the base 2, which surrounds the columnar portion 3 and is used to compensate for the gap. In this embodiment, the sealing ring 6 is preferably a fluororubber dynamic sealing ring.
[0026] The adhesive cavity 210 consists of a cylindrical cavity located above and a conical cavity located below. The inner wall of the cylindrical cavity has an internal thread 4, and the inlet of the concentric flow channel 230 is located at the lowest point of the conical cavity.
[0027] Example 4 like Figures 1-4 As shown, this embodiment is a further improvement on embodiment 1, 2, or 3, as detailed below: The inner diameter of the essential oil channel 111 is 0.8mm to 1mm, which is consistent with the existing technology.
[0028] Example 5 like Figure 2 As shown, this embodiment is a further improvement on any one of embodiments 1 to 4, as detailed below: The essential oil channel 111 is equipped with a Tesla flow channel 5 near the outlet. When the glue pump depressurizes abnormally, the backflowing glue enters the side branch of the Tesla flow channel 5, forming a vortex. The resistance increases sharply, usually by about 10 times. Physically blocking the backflow prevents the glue from flowing back into the only channel, reducing maintenance frequency and debugging time, thereby saving costs without affecting production capacity. Since the glue will not flow back into the essential oil channel, it is also convenient to start the equipment.
[0029] Example 6 like Figures 1-4 As shown, this embodiment is a further improvement on any one of embodiments 1 to 5, as detailed below: The lower end of the base 2 is narrowed into a columnar structure, that is, the concentric flow column channel 230 is located within the narrowed columnar structure of the base 2.
[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A retractable burst bead forming dropper, characterized in that, include: The top seat (1) and the base (2) are provided. The lower end of the top seat (1) has an oil filling part (110) that is vertically distributed and narrowed into a column shape. The oil filling part (110) has an essential oil channel (111) that has an outlet that passes through its lower end face and an inlet that communicates with the oil filling hole (120) on the side of the top seat (1). The upper end face of the base (2) is provided with a glue cavity (210). The side of the base (2) is provided with a channel that communicates with the glue cavity (210). 10) A connected injection hole (220) is provided. A concentric flow column channel (230) is opened at the bottom of the glue cavity (210) and passes through the lower end face of the base (2). The lower end of the oil injection part (110) enters the glue cavity (210) and the outlet of the essential oil channel (111) is aligned with the inlet of the concentric flow column channel (230). The top seat (1) and the base (2) are connected by an adjustment mechanism that adjusts the position of the outlet of the concentric flow column channel (230) by adjusting it up and down.
2. The retractable burst bead forming dropper according to claim 1, characterized in that, The lower end face of the top seat (1) has a columnar part (3) surrounding the oil injection part (110). The outer peripheral surface of the columnar part (3) has an external thread (310). The inner wall of the glue cavity (210) at the inlet has an internal thread (4). The external thread (310) of the columnar part (3) and the internal thread (4) of the glue cavity (210) are threadedly connected to form an adjustment mechanism.
3. A retractable burst bead forming dropper according to claim 1 or 2, characterized in that, The adjustment mechanism is used to adjust the travel range of the outlet position of the concentric flow column channel (230) by ±5mm.
4. The retractable burst bead forming dropper according to claim 2, characterized in that, The lower end face of the top seat (1) and the upper end face of the base (2) have a sealing ring (6) that surrounds the columnar part (3) and is used to compensate for the gap.
5. A retractable burst bead forming dropper according to claim 4, characterized in that, The sealing ring (6) is a fluororubber dynamic sealing ring.
6. A retractable burst bead forming dropper according to claim 2, characterized in that, The adhesive cavity (210) is composed of a cylindrical cavity located above and a conical cavity located below. The inner wall of the cylindrical cavity has an internal thread (4), and the entrance of the concentric flow channel (230) is located at the lowest point of the conical cavity.
7. A retractable burst bead forming dropper according to claim 1, characterized in that, The inner diameter of the essential oil channel (111) is 0.8 mm to 1 mm.
8. A retractable burst bead forming dropper according to claim 1, characterized in that, The essential oil channel (111) has a Tesla flow channel (5) in the area near the outlet.
9. A retractable burst bead forming dropper according to claim 1, characterized in that, The lower end of the base (2) is narrowed into a columnar structure.