JPS5842902Y2 - electromagnetic flow meter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electromagnetic flowmeter equipped with a sterilization protector suitable for measuring flow rates related to food products.

Figure 1 is a front view of a conventional electromagnetic flowmeter connected to piping.
The connecting part between the electromagnetic flowmeter and the piping is partially shown in cross section. 01 is the main body of the electromagnetic flowmeter, and 2 is the pipe that serves as the flow path of the electromagnetic flowmeter through which the fluid to be measured flows. A lining 21 is provided.

Seven flange portions 22 are formed at both ends of the pipe, and the lining 21 has a seven-lead portion 21' formed at the end thereof so as to cover the inner periphery of the surface of the seven flange portions 22.

When connecting the electromagnetic flowmeter main body 1 to a pipe, the ring-shaped protector 4 is brought into close contact with the flare part 21', and a gasket 3 is placed between the protector 4 and the 7 flange part 31 of the pipe 3.
2, connect the 7 langes 22 and 7 langes 31 to the bolt 3.
3. The electromagnetic flowmeter main body 1 is fixed to the piping 3 by fixing with a nut 34 or the like.

The protector 4 has an inner conical inner diameter to gently connect the difference between the inner diameter of the pipe 2 and the inner diameter of the piping 3 of the electromagnetic flowmeter, and protects the flare part 21' and protects the electromagnetic flowmeter. This is to ground the main body 1. On the other hand, in pipes that flow food-related products such as milk, beer, juice, etc., residue accumulates at the joints of the pipes and bacteria are likely to grow.

Furthermore, bacteria often enter from the outside through the sealing surfaces of piping joints.

In addition, food-related products require particular attention to taste and hygiene.
Once the process of pouring food through the pipes was completed, steam was applied to clean the insides of the pipes and joints to remove any residue.

However, in electromagnetic flowmeters, the lining inside the pipe is relatively weak against heat, and cleaning with steam should be avoided as much as possible, and sterilization of the joint between the electromagnetic flowmeter and the pipe has been a problem.

In order to solve these conventional drawbacks all at once, this invention has a structure that heats the joint between the electromagnetic flowmeter and the piping by flowing steam or hot water through a protector that protects the flare part of the lining of the electromagnetic flowmeter. It is characterized by this.

By heating the protector, the purpose is to sterilize germs that enter the joint from outside, and to keep the inner surface of the pipe and the joint clean at all times.

FIG. 2a is a partial cross-sectional view of the seven flange and protector portions of an electromagnetic flowmeter embodying the present invention, and the same elements as those in FIG.

Reference numeral 4' denotes a ring-shaped protector for protecting the 7-flange portion 21' of the lining 21, and the outer diameter is smaller than the outer diameter of the 7-flange 22 and the inner diameter d is equal to the inner diameter of the pipe 2.

FIG. 2 is a cross-sectional view of the protector 4 of FIG. 2a taken along line A-A.

A circular flow path 41 penetrating the protector 4' is formed in the protector 4', and an inflow path 42 and an outflow path 42' for introducing and discharging steam or high-temperature fluid into the flow path are connected to the outer periphery 43 of the protector 4' and the flow path. It is formed between 41 and 41.

The protector 4' having such a structure is sandwiched between the seventh flange 22 and the seventh flange 22 with a gasket 32 interposed between the seventh flange 31 of the piping 3 and the protector 4' as shown in FIG. 2a. 31 is tightened with bolts 33, nuts 34, etc.

Note that it goes without saying that an O-link (not shown) may be used instead of the gasket 31.

Steam or high-temperature fluid is passed through the inlet 42 to raise the temperature of the protector 4' to a temperature that can sterilize germs that enter through the sealing surfaces of the seven flanges 22 and 31.

Therefore, by carrying out the present invention, germs and the like do not enter the pipe from the outside, so that the electromagnetic flowmeter for food products can be used extremely safely from a sanitary standpoint.

Furthermore, since the protector 4' can be kept at a high temperature and the pulse 2 of the electromagnetic flowmeter can be kept warm, it can also be used for measuring the flow rate of fluids that solidify at low temperatures.

The protector of the electromagnetic flowmeter of the present invention is shown in Figure 2 a) and b.
The structure is not limited to that shown in FIG. 3a, for example.
It is also possible to form one inlet/outlet 42 for introducing and discharging steam or high-temperature fluid into the flow path as shown in the figure, and to seal steam or hot water in the flow path 41. 4' may be formed on the surface of the lining 21 that contacts the flared portion 21' and the gasket attached to the flange 31.

In this case, in order to prevent steam or high-temperature fluid from leaking from the flow path 41', a groove 44 is formed on the outer and inner diameter sides of the flow path 41' of the protector 4, and an O-ring 45 is inserted into the groove.
etc. to maintain airtightness.

Further, as shown in Figure C, the effect of the present invention is further enhanced by wrapping a heat insulating material 45 around the outer periphery 43 of the protector 4' to prevent the temperature of the protector from decreasing.

[Brief explanation of drawings]

Figure 1 is a partially sectional front view of a conventional electromagnetic flowmeter connected to piping, Figure 2a is a partial cross-sectional view of the flange and protector of the electromagnetic flowmeter of the present invention, and Figure 2a is a partially sectional view of the electromagnetic flowmeter of the present invention. is a sectional view taken along line A-A of the protector shown in Figure a, Figure 3 a-e
FIG. 3 is a sectional view showing another structure of the protector. 21'... Flare part, 22, 31...
7 lunge, 4'...protector, 41.41'
---Flow path, 42 ---Inflow path, 421
...Outflow path.

Claims (1)

[Scope of utility model registration request] In an electromagnetic flowmeter equipped with a protector that is placed between the piping that carries the fluid to be measured and the electromagnetic flowmeter to protect the flared part of the flange surface and ground the fluid to be measured, a flow path is formed in the protector. An electromagnetic flowmeter characterized by flowing steam or high-temperature fluid through a flow path.