JP3052995U - Air bleeding device for liquid circulation circuit - Google Patents

Abstract

(57) [Problem] To provide an air bleeding device for a liquid circulation circuit that can automatically and efficiently discharge air from a liquid circulation circuit without stopping a circulation pump. SOLUTION: A cyclone 1 is connected to a liquid circulation circuit, and an air vent 3 sealed with a floating ball 4 is provided on an upper surface of an exhaust chamber 2 communicating with a top of the cyclone 1. While the liquid sent in the cyclone 1 is swirling and staying in the cyclone 1, the centrifugal force of the swirling flow separates and raises the air 9 in the liquid and exhausts the liquid from the top of the cyclone 1. It enters the chamber 2 and gathers in the air vent 3 on the upper surface. The air collected at the air vent 3
When a certain amount is reached, the floating ball 4 is pushed down, and is automatically discharged outward from the air vent 3. After discharging air, float 4
Seals the air vent 3 again.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an air bleeding device for a liquid circulation circuit.

[0002]

[Prior art]

 An example of a conventional liquid circulation circuit will be described with reference to FIG. A circulating pump 15 and a heat exchanger 16 are connected to the liquid circulating circuit B. The air in the circuit at the time of new installation of the equipment, the air entering from the joint of the pipe of the liquid circulating circuit, and the heat exchanger The air that has entered the liquid circulation circuit B at the time of replacement of the cooling rolls, etc. has been removed by the device 13 provided at the highest point in the liquid circulation circuit B. The device 13 is configured such that when the liquid in the circulation circuit passes through the device 13, the air that escapes from the liquid is naturally discharged from the discharge port 14. In the figure, reference numeral 20 denotes a liquid supply tank.

[0003]

[Problems to be solved by the invention]

 However, in the above-described conventional apparatus, since the air bleeding from the liquid is naturally dependent, the air bleeding effect is not sufficient. If the air bleeding of the liquid circulation circuit B is not sufficient, the impeller of the pump will pick up the air in the liquid and the impeller will be damaged by the impact, or the air will accumulate inside the pump and the efficiency of the liquid sending will deteriorate, In the worst case, the liquid cannot be sent due to idling, and the liquid in the liquid circulation circuit B cannot be circulated. Therefore, in order to perform sufficient air bleeding, in addition to the air bleeding by the device 13, the circulating pump 15 is stopped, and an air bleeding chamber (not shown) on the inflow side of the circulating pump 15 as shown in FIG. ) Was released by loosening the valve 17.

[0004] However, stopping the circulation pump 15 for the purpose of air bleeding stops the function of the liquid circulation circuit B, and operates the facility connected to the heat exchanger 16 on the liquid circulation circuit B. Will also stop. In addition, the air bleeding by the conventional method needs to be performed about 5 to 6 times a week at the time of starting up the facility and about once every February after the operation is started. An object of the present invention is to provide an air bleed device for a liquid circulation circuit that can automatically and efficiently discharge air from the liquid circulation circuit without stopping the circulation pump.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, in the air bleeding device for the liquid circulation circuit of the present invention (hereinafter referred to as an air bleeding device), a cyclone is connected to the liquid circulation circuit, and the air bleeding device is mounted on the upper surface of the exhaust chamber leading to the top of the cyclone. It has an air vent sealed with floating balls. The cyclone used in the air bleeding device of the present invention has an inlet at the top of a generally known 'funnel-shaped' container and an outlet at the bottom. In the above cyclone, it is desirable that the ratio of the diameter of the inlet to the diameter of the cyclone at the portion connected to the inlet is 1: 3. The floating ball may be of any material and shape as long as it has excellent buoyancy and can easily seal the air vent, such as a hollow plastic circular body or cylindrical body. Is exemplified.

While the liquid sent from the liquid circulation circuit into the cyclone is swirled in the cyclone and stays therein, the air contained in the liquid separates and rises, and enters the exhaust chamber from the top of the cyclone. , Gather at the air vent on the upper surface. When the air collected at the air vent on the upper surface of the exhaust chamber reaches a certain amount, it pushes down the floating ball and is naturally discharged from the air vent. This solves the problem of the present invention. Note that the cyclone is preferably provided immediately before the circulation pump so that the liquid immediately after the air is released enters the circulation pump.

[0007]

[Embodiment of the invention]

 Hereinafter, an embodiment of the air vent device of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1A is a schematic cross-sectional view of the air bleeding device of the present invention, and FIG. 1B is a schematic cross-sectional view taken along line CC of FIG. FIG. 2 is a schematic system diagram of an example of a liquid circulation circuit to which the air vent device of the present invention is connected.

As shown in FIG. 1, the air bleeding device of the present invention includes a cyclone 1, an exhaust chamber 2 communicating with the top of the cyclone 1, an air vent 3 provided on the upper surface of the exhaust chamber 2, and an air vent 3. It is composed of a hollow plastic floating ball 4 that seals the opening 3. The floating ball 4 seals the air vent 3 by its buoyancy in the liquid reaching the air vent 3.

As shown in FIG. 2, the cyclone 1 is provided immediately before a circulation pump 5 on a liquid circulation circuit A, and a heat exchanger 6 is connected to the liquid circulation circuit A. Reference numeral 10 in the figure denotes a liquid supply tank of the liquid circulation circuit A. As shown in FIG. 1 (a), the liquid on the liquid circulation circuit A that has entered the cyclone 1 from the inlet 7 on the upper side of the cyclone 1 collides with the opposing side wall in the cyclone 1 and turns while turning downward. From the outlet 8 to the liquid circulation circuit A.

While the liquid is swirling and staying in the cyclone 1, the centrifugal force of the swirling flow causes the air 9 in the liquid to separate and rise, from the top of the cyclone 1 to the exhaust chamber 2. It gathers at the air vent 3 on the entrance top. When the air collected in the air vent 3 reaches a certain amount, the floating ball 4 is pushed down and is automatically discharged outward from the air vent 3. After the air is discharged, the floating ball 4 seals the air vent 3 again by its buoyancy. As the above operation is repeated, the air completely escapes from the liquid circulation circuit A.

[0011]

[Effect of the invention]

 According to the air bleeding device of the liquid circulation circuit of the present invention, the air in the liquid circulation circuit can be automatically and efficiently exhausted completely without stopping the circulation pump as in the related art. This eliminates the need to interrupt operation and perform air bleeding.

[Brief description of the drawings]

FIG. 1 is a schematic view of an example of an air venting device according to the present invention, wherein (a) is a schematic cross-sectional view, and (b) is a C- line of (a).
It is sectional drawing in alignment with C line arrow.

FIG. 2 is a schematic system diagram of an example of a liquid circulation circuit to which the air vent device of the present invention is connected.

FIG. 3 is a system diagram showing an example of a conventional liquid circulation circuit.

FIG. 4 is a schematic view of an air vent device provided in a conventional liquid circulation circuit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cyclone 2 Exhaust chamber 4 Floating ball 3 Air vent 5,15 Circulation pump 7 Upper inlet of cyclone 6,16 Heat exchanger 8 Outlet 9 Air 13 Device 14 Outlet 17 Valve 10,20 Liquid supply tank A, B Liquid circulation circuit

Claims (1)

[Utility model registration claims] 1. A cyclone is connected on a liquid circulation circuit,
An air vent device for a liquid circulation circuit, comprising an air vent port sealed with a floating ball on an upper surface of an exhaust chamber communicating with a top of a cyclone.