Protective device of rotary blanking valve

Abstract

The utility model discloses a protection device of a rotary blanking valve, which relates to the field of mechanical structures and comprises the rotary blanking valve, an air source pipe, a float flowmeter and a three-way valve, the three-way valve is arranged on an output shaft of the rotary blanking valve, and a lower channel opening of the three-way valve is right opposite to the surface of the output shaft. A float flowmeter is installed on an upper channel of the three-way valve, and an air source pipe is arranged on a side channel of the three-way valve and connected with an air source. The rotary blanking valve has the characteristics of convenience in operation and high reliability, and is used for solving the problems that when an air source is unstable, field operators cannot find the instability in time, so that the polyvinyl chloride resin accumulation condition occurs at the shaft end, and the production process and the service life of the rotary blanking valve are influenced by the locking of the rotary blanking valve shaft.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical structure field, concretely relates to a protection device of rotary unloading valve. BACKGROUND

[0002] In the polyvinyl chloride resin unloading process, usually will use rotary unloading valve. However, in the operation process of rotary unloading valve, polyvinyl chloride resin will gather at its shaft end, in order to solve this problem, the original equipment will reserve gas source mouth at the end cover of rotary unloading valve, when using, connects gas source pipe and passes instrument air, to blow away polyvinyl chloride resin at the shaft end, prevents its gathering. However, when the gas source is unstable in actual operation, the field operator cannot find in time, leading to polyvinyl chloride resin accumulation on the shaft end. SUMMARY

[0003] In view of the above problem, the utility model provides a protection device of rotary unloading valve, has simplified structure, and the characteristics of the float of float flowmeter are used to determine whether polyvinyl chloride resin is accumulated, to solve the problem that polyvinyl chloride resin accumulation cannot be found in time, leading to rotary unloading valve shaft lock and affecting production process and service life of rotary unloading valve.

[0004] In order to achieve the above object, the technical scheme of the utility model is as follows:

[0005] A protection device of rotary unloading valve, characterized by: including rotary unloading valve, gas source pipe, float flowmeter, three-way valve, the output shaft of rotary unloading valve is provided with three-way valve, the lower passage mouth of three-way valve is opposite the surface of output shaft, the upper passage of three-way valve is installed with float flowmeter, the side passage of three-way valve is equipped with gas source pipe, and the gas source pipe is connected with gas source.

[0006] The utility model has the advantages that when the utility model is used and rotary unloading valve operates, compressed air is passed into the gas source pipe, the float in the float flowmeter will float up and down when compressed air is passed in, if the gas source is disconnected, the shaft end in the rotary unloading valve is seriously accumulated with powder or the pipeline is blocked, the float of float flowmeter will fall to the lowest point, by observing the float flowmeter, the field operator can know whether the gas source is stable input gas source pipe in time, to avoid the accumulation of polyvinyl chloride resin affecting production process and service life of rotary unloading valve. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the structure schematic view of the utility model;

[0008] Figure 2 It is the local structure schematic view of the utility model;

[0009] Figure 3 It is the plan view of the utility model.

[0010] The figure mark: rotation unloading valve 1, air source pipe 2, float flowmeter 3, three-way valve 4. DETAILED DESCRIPTION

[0011] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0012] As shown in Figure 1 , Figure 2 , Figure 3 A kind of protection device of rotation unloading valve, it is characterized in that: including rotation unloading valve 1, air source pipe 2, float flowmeter 3, three-way valve 4, three-way valve 4 is provided on the output shaft of rotation unloading valve 1, the lower passage mouth of three-way valve 4 is opposite the surface of output shaft, float flowmeter 3 is installed on the upper passage of three-way valve 4, air source pipe 2 is arranged in the side passage of three-way valve 4, and air source pipe 2 is connected with air source.

[0013] The utility model uses, in the output shaft end of rotation unloading valve 1 and three-way valve 4 bottom fixed installation, three-way valve 4 upper portion installs float flowmeter 3, three-way valve 4 side edge installs air source pipe 2, when rotation unloading valve 1 runs, compressed air is passed into in air source pipe 2.When the float of float flowmeter 3 has compressed air and is passed into, it will float up and down, if air source is disconnected, the shaft end of rotation unloading valve 1 is seriously accumulated powder or pipeline is blocked, the float of float flowmeter 3 will fall to the lowest point, by observing float flowmeter 3, site operator can know whether air source is stable input air source pipe 2 in real time.This design effectively improves the working efficiency and reliability of rotation unloading valve, makes it maintain stable operation for a longer time, to meet the production demand.

[0014] Finally, it should be noted that: the above is only preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A protective device for a rotary discharge valve, characterized in that: The invention comprises a rotary discharge valve (1), an air source pipe (2), a float flowmeter (3), and a three-way valve (4). The three-way valve (4) is provided on the output shaft of the rotary discharge valve (1), the lower channel opening of the three-way valve (4) faces the surface of the output shaft, the float flowmeter (3) is installed on the upper channel of the three-way valve (4), and the side channel of the three-way valve (4) is provided with an air source pipe (2), and the air source pipe (2) is connected to the air source.

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