JPS6313782Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a strainer equipped with a heating device.

Traditionally, in strainers used by plumbers who handle highly viscous fluids such as inferior ship fuel oil, heating steam pipes were wrapped around the strainer body to prevent the fluid from sticking due to temperature drops, or the strainer was welded to a steel plate. Depending on the structure, a method of forming a double cylinder and providing a steam jacket is generally adopted. However, since this welded steel plate structure has a double structure,
In particular, the structure of the pipe joints was complicated and it was difficult to cast them in one piece. In addition, since it has a double structure, the external dimensions are large and the equipment space is large, and the lid at the top of the strainer is also large, and the lid is tightened with many bolts around the entire circumference. Moreover, the handling of the sieve net during cleaning was extremely inconvenient.

The present invention was developed in view of the above-mentioned problems, and examples thereof will be described below with reference to the accompanying drawings.

Figure 1 is a front view of a single-type oil strainer with a steam jacket to which the present invention is applied, Figure 2 is a plan view of the same, and Figure 3
The figure is an enlarged perspective view of the same part, and in these drawings, reference numeral 1 indicates the sieving device main body, 2 indicates the sieving device lid attached to the top of the sieving device, and 3 indicates a lid holder for the sieving device lid.

Further, 4 is an inlet of the fluid to be heated, and 5 is an outlet of the same fluid, each of which is connected to a predetermined location through a fluid piping.

A steam jacket 6 is formed by integral casting with the strainer body 1 below the heated fluid inlet 4 of the strainer body, and a jacket lid 7 is attached to the jacket 6. Lid 7
A heated steam inlet 8 and a heated steam outlet 9 are provided vertically opposite to each other on the top. 10 is a hexagonal bolt for mounting the steam jacket lid.

On the other hand, Figures 4 to 6 show a double oil strainer with steam jacket to which the present invention is applied.
In short, it is nothing more than a combination of multiple single-type oil strainers, and the explanation is essentially the same as that of the single-type oil strainer described above, and the same reference numerals are used for each part, so repeated description will be omitted.

As is clear from the above embodiments, the present invention is characterized in that the steam jacket is integrally formed with the sifter body, and the size of the steam jacket is large enough to accommodate the heated fluid inside the sifter. The amount of heat required for heating may be determined based on the amount of heat required for heating, and one or more jackets may be used to heat the internal fluid to be heated as uniformly as possible, and to ensure smooth heating in a short time when the fluid to be heated is stuck. It is a shaped heating device. (more than one is preferable). ) Provided corresponding to the flow path of the fluid to be heated within the strainer body.
Determine the specific mounting position of the jacket by considering the following points.

Next, the results of a heating test using a 50 mm diameter prototype (particularly for a single-type oil strainer) are shown in the graph of Figure 7. As is clear from the figure, the temperature of heavy oil A, which is the fluid to be heated, can be raised above the predicted value in an extremely short period of time, which indicates that the strainer of the present invention has sufficient heating capacity. I understand that.

The present invention configured in this manner has the following effects.

This idea is based on the properties of the fluid to be heated (targeting high viscosity C heavy oil that usually lasts for more than 3500 seconds).When the fluid is stopped, it accumulates near the bottom of the strainer, and when the fluid is flowing, there is a stagnation area at the bottom of the strainer. Therefore, in order to efficiently raise or maintain the temperature of the fluid to be heated, a heating jacket is installed below the inlet of the fluid to be heated (it is even more effective if multiple jackets are installed in opposition to each other), and the temperature of the fluid to be heated is uniformly increased. By using this structure, the desired heating effect can be obtained without having to provide a double heating jacket for the entire strainer.

Therefore, there is no need for the entire structure to be double-layered as in conventional sifter, the structure of the pipe joint is simplified, and the heating jacket is integrally cast on the sifter body, making it easier to use than before. This has the effect of providing a strainer equipped with a heating device at a very low cost.

As a result, except for the steam jacket part, the structure and dimensions can be exactly the same as the currently widely used JIS standard strainer, making it possible to reduce the external dimensions and standardize the shape. be.

Furthermore, the lid on the top of the sifter can be opened just by loosening a single bolt, just like the JIS standard sifter, which greatly improves maintenance work.

[Brief explanation of the drawing]

Figures 1 to 3 are a front view and a plan view of a single oil strainer with steam jacket to which the present invention is applied;
4 to 6 show a double oil strainer with a steam jacket to which the present invention is applied; sequentially, a cutaway front view, a side view, and a plan view of the same parts; It is an oil temperature rise diagram showing the results of a heating test using a prototype. 1... Strainer main body, 2... Strainer lid, 3... Lid holder, 4... Inlet for heated fluid, 5... Outlet for heated fluid, 6... Steam jacket, 7... Jacket Lid, 8... Heating steam inlet, 9... Heating steam outlet, 10... Hexagonal bolt for mounting the steam jacket lid.

Claims (1)

[Scope of utility model registration request] In a strainer equipped with an inlet and an outlet for the fluid to be heated, one or more jacket-shaped heating devices having an appropriate size are attached to the strainer body, corresponding to the flow path of the fluid to be heated within the strainer body. A strainer equipped with a heating device, characterized in that it is integrally cast in the .