Screw pump stator rubber bushing forming device and method

Abstract

The invention provides a screw pump stator rubber bushing forming device and method. The screw pump stator rubber bushing forming device comprises a gear pump, a flange, an extruder, a temperature control system and a control panel, wherein the flange is fixedly connected with one end of the gear pump and provided with an arc-shaped end surface, the extruder is fixedly connected with the other endof the gear pump, the temperature control system and the control panel are located below the extruder and are connected with the forming device, the screw pump stator rubber bushing forming device further comprises a screw pump stator pipe which is in spherical linear sealing connection with the arc-shaped end surface of the flange provided with the arc-shaped end surface, a forming runner is arranged in the screw pump stator pipe, a Y-shaped runner is arranged at the joint between the screw pump stator pipe and the arc-shaped end surface of the flange provided with the arc-shaped end surface, and Y-shaped runner double-head end surface runner openings communicate with a forming runner in the screw pump stator pipe. According to the screw pump stator rubber bushing forming device and method, the technical problems that in the prior art, rubber with relatively large viscosity is difficult to inject, a large-scale product injection runner is too long, equipment investment is large and the like are solved, the structure is simple and compact, the work is reliable, the automation degree is high, the production efficiency is high, and plasticizing molding metering continuity is realized.

Description

technical field [0001] The invention belongs to the technical field of rubber processing, and relates to a novel screw pump stator rubber bush forming device and method. Background technique [0002] Since the early 1990s, screw pumps have been widely used in the following chemical industry, exploration and mining, shipbuilding, ceramic industry, energy industry, sewage treatment, paper industry, medicine, food and other industries due to their excellent conveying characteristics, for conveying chemical slurry , Drilling mud, all kinds of fuel oil, fresh water, dirty oil, and clay are transported by various media. Screw pump plays an important role in modern industry and is one of the main technologies developed in our country today. The key component of screw pump is stator rubber bushing. Its molding technology is the key to product performance and represents the advanced level of screw pump technology. [0003] The traditional production method of screw pump stator produ...

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Problems solved by technology

[0003] The traditional production method of screw pump stator products is: 1) Injection method, but the disadvantages are: ①The energy consumption is very large (>350kw), and the injection volume is limited; ②The large product can be injected multiple times to achieve the required amount; ③The product life Short, due to divided injection, it is easy to cause poor bonding of the rubber

2) Injection method: but the disadvantages are: ① uneven plasticization, which affects the quality of the product

②The injection pressure is too high, and the negative impact is great

③The equipment investment is large, and the host needs about 20 million

[0004] Chinese patent CN200410024397.4 discloses a one-step injection molding vulcanization equipment and method for ordinary screw pump stator rubber bushings. Hollow screw pump stator spiral tube wall is thin (6 ~ 8mm) can not withstand high pressure

However, the extrusion pressure of this device is relatively small, and there is a limit to the injection volume. Like the traditional two-step injection method, a certain amount of rubber is accumulated in the barrel first. The larger the product, the larger the volume. For rubber with higher viscosity, injection The more difficult it is, especially for large-scale products, the injection channel is too long. Therefore, it is particularly important to invent a screw pump stator rubber bushing molding device and process with a simple and compact structure, reliable operation, high degree of automation, and high production efficiency.

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