Rotational flow stirring type mixing head
A stirring type and mixing head technology, which is applied in the field of mixing and pouring devices for two liquid materials, can solve problems such as impossibility, and achieve the effects of low manufacturing cost, light weight and simple structure
Pending Publication Date: 2021-09-03
西安智源拓信机械设备有限公司
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Problems solved by technology
If it is necessary to mix a third material, neither of these mixing heads can achieve it
Method used
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[0018] Such as figure 1 The mixing head shown includes a mounting frame 1, on which a nozzle 2 is arranged, and the nozzle 2 includes an outer tube 2-1, an intermediate tube 2-2, and a mandrel 2 arranged coaxially from the outside to the inside. -3, wherein the clearance fit between the outer tube 2-1 and the middle pipe 2-2 forms the first annular passage 2-4, and the clearance fit between the middle pipe 2-2 and the mandrel 2-3 forms the second annular passage 2-5, On the shower head 2, an injection joint 3 is connected, and the injection joint 3 can inject two kinds of materials to be mixed into the first annular channel 2-4 and the second annular channel 2-5 in the shower head 2 (here for convenience to distinguish the abbreviation It is material A and material B, taking PU foam material as an example, material A and material B are polyether polyol and isocyanate respectively, and material A and material B do not limit the channel position, the two can be interchanged cha...
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The invention discloses a rotational flow stirring type mixing head. The rotational flow stirring type mixing head comprises an installing frame, a spray head is fixed on the installing frame, the spray head sequentially comprises an outer pipe, a middle pipe and a core rod which are coaxially arranged from outside to inside, the outer pipe and the middle pipe are in clearance fit to form a first annular channel, the middle pipe and the core rod are in clearance fit to form a second annular channel, a material injection joint for injecting a to-be-mixed material A and a to-be-mixed material B into the first annular channel and the second annular channel respectively is arranged on the spray head, a material mixing pipe capable of rotating around a middle shaft is coaxially arranged at the end, far away from the material injection joint, of the spray head, discharge ports of the first annular channel and the second annular channel are provided with inclination angles orienting the inner wall of the material mixing pipe, so that the discharge ports of the first annular channel and the second annular channel can obliquely spray the material A and the material B to the inner wall of the material mixing pipe in an umbrella shape correspondingly. The adopted rotational flow stirring type mixing head is simple in structure, light in weight and low in manufacturing cost, does not need excessive system pressure, and has low requirements on a foaming machine system.
Description
technical field [0001] The invention relates to a pouring device for mixing two kinds of liquid materials, in particular to a polyurethane PU foaming mixing head. Background technique [0002] Polyurethane foam mixing heads are commonly used in high-pressure atomization and spraying high-pressure mixing heads and mechanical stirring low-pressure mixing heads. The high-pressure atomizing counter-spray mixing head is used in the high-pressure foaming machine, and the delivery pressure of the two materials is required to be stable and the pressure value is high (generally greater than 7Mpa), so the delivery metering pump and system control requirements are higher. Due to the completion of spraying and switching actions under high pressure, the requirements for the material and processing accuracy of the switching valve and nozzle are very high, and the service life is limited. If the spraying pressure is unbalanced, the nozzle will be blocked by cross-flow; the low-pressure mi...
Claims
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Login to View More IPC IPC(8): B29C44/34B29K75/00
CPCB29C44/3442B29K2075/00
Inventor 钟媛
Owner 西安智源拓信机械设备有限公司