JPH0454321Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (industrial application field) The invention is a float type accumulator used for accumulating, buffering, etc. of pressure liquid in the hydraulic equipment industry. Specifically, the float is supported by rollers inside the main body to prevent it from rolling laterally, so that even when liquid flows in and out at high speed, the float does not shift to one side or get caught on the main body. , relates to an accumulator that uses a baffle plate and a stabilizer plate to cause a turbulent flow of liquid, suppresses passage of the liquid through gaps, and prevents gas from dissolving into the liquid or being released into a liquid circuit. .

(Prior Art) Conventionally, as shown in FIG. 3 of the drawings, a float type accumulator has a main body 24 containing a float 25 that slides on the inner surface of the main body 24 on the outer circumferential surface, and this float 25 allows liquid and gas to flow through the main body 24. It is known that an opening/closing member 28 of a valve body 27 is attached to the lower part of the float 25 to open and close the liquid inlet/outlet 26 of the main body 24.

(Problems to be Solved by the Invention) In the conventional float-type accumulator described above, since there is a sliding gap between the float 27 and the inner surface of the main body 24, the flow rate of liquid into and out of the main body 24 is high. , the float 25 swings sideways, and the main body 2
4 or gets caught on the main body 24 and becomes lopsided. Since the liquid that has passed through the gap flows up to the upper surface of the float 25 and covers the float 25, gas dissolves into this liquid, causing a shortage in the amount of stored liquid to reduce the amount of sealed gas, and
If the float 25 gets caught, not only will the gas-liquid isolation function be lost and gas will dissolve into the liquid, but the opening/closing member 28 will no longer be able to close the valve body 28, causing the gas inside the main body to leak. There was a problem that the liquid leaked into the liquid circuit.

The present invention was made to solve the above-mentioned conventional problems, and even if the fluid flows in and out of the main body at a high speed, the float does not shift toward the main body or get caught. It is an object of the present invention to provide a float type accumulator that prevents gas from dissolving into liquid and releasing it into a liquid circuit.

B. Structure of the invention (means for solving problems) The means of the invention for achieving the above object is a float-type aqueous system that houses a float inside the main body and separates gas and liquid by this float. In the mulator, rollers that roll into contact with the inner surface of the main body are installed at three or more locations on the outer periphery of both ends of the float, and between these upper and lower rollers, rollers are installed on the outer periphery of the float, with the outer edge approaching the inner surface of the main body. The structure of the float type accumulator includes a stabilizing plate located in the liquid and a baffle plate located in the gas.

(Function) The float-type accumulator of the present invention configured as described above houses the float into the main body through the opening at the top, and when the opening is closed with the upper plate, the float separates the liquid from the gas. The above-mentioned float of this accumulator is provided with rollers at three or more places on the upper and lower outer peripheral surfaces, and these rollers roll into contact with the inner surface of the main body, so that the float moves at a high speed. The device moves up and down smoothly without causing sideways vibration, responds to the inflow and outflow of liquid without causing any deviation or catching on the main body, and reliably closes the valve body after draining the liquid. Furthermore, since the outer edges of the stabilizer plate and the baffle plate provided on the outer peripheral surface of the float between the upper and lower rollers are close to the inner surface of the main body, liquid will flow through the gap between the outer edge and the inner surface of the main body. When doing so, turbulence is generated on the upstream side of the gap to suppress the liquid flow and prevent the liquid from flowing up to and covering the upper surface of the float.

(Example) An example of a float type accumulator according to the present invention will be described below based on the drawings.

In Figures 1 and 2 of the drawings, 1 is a main body, which is formed of a high-strength pipe made of steel or the like, whose lower end opening is closed by screwing a bottom plate 3 with a liquid inlet/outlet 2, and whose upper end opening is closed. The upper plate 5 provided with the air supply hole 4 is closed by screwing to obtain the required pressure resistance and capacity, and the liquid flowing from the inlet/outlet 2 and the liquid flowing from the air supply port 4 are sealed inside the upper plate 5. The body 1 accommodates a float, which will be described later, which separates the gas from the main body 1, and compresses the gas with the liquid, so that a required amount of pressurized liquid is accumulated in the main body 1.

6 is a valve body that opens and closes the liquid inlet/outlet 2 described above;
The valve shaft 7 is fitted into a bearing 9 supported by an arm 8 at the center of the liquid inlet/outlet 2, and a release spring 10 is fitted to the valve shaft 9 between the valve body 6 and the arm 8. This spring 10 is used to keep the valve body 6 open except when it is held down by a float, which will be described later.

Reference numeral 11 denotes a float housed inside the body 1 described above, which is made of a strong thin plate such as a steel plate and formed into a hollow cylindrical shape with a diameter smaller than that of the body 1, and has a bottom plate 12 on the underside of which is in contact with the valve body 6. A liquid passage hole 14 is provided in the plate 13 to allow liquid to enter and exit when the contact plate 13 contacts and separates from the valve body 6, thereby preventing adhesion between the valve body 6 and the contact plate 13 due to a vacuum phenomenon. In addition, the upper plate 15 is shaped like an umbrella, with an opening 16 having a rising edge in the center, and an umbrella-shaped opening 16 with a hanging edge formed above the opening 16 with a diameter larger than the opening. Cover the shield 17, for example, float 1
Even if 1 is exposed to liquid, float 11
Further, an annular stopper 18 is connected to the upper side of the upper plate 15, the upper end of which is located slightly higher than the umbrella-shaped shield 17. When the stopper 18 hits the upper plate 15 of the main body 1, the float 1
1 is prevented from rising, and a required number of ventilation holes 19 are provided at the lower end of this stopper 18.

Reference numeral 20 denotes rollers attached to the upper and lower outer peripheries of the float 11, and three or four rollers, or more if necessary, are attached to the float 11 at equal intervals using attachment members 21.
and the main body 1 are held correctly concentrically, and
Due to the rolling contact between the rollers 20 and the inner surface of the main body 1, even when the float 11 is moved at high speed, it can be stably raised and lowered without causing sideways movement, and the float 11 is not biased against the main body 1 or pulled against the main body. It's designed so that you don't get stuck.

22 and 23 are the upper and lower rollers 2 mentioned above.
Between 0 and 20, there are two baffle plates provided at a predetermined interval on the outer circumferential surface of the float 11, and one stabilizing plate. It acts to suppress the lateral vibration of
The baffle plate 22 is located in the gas and functions to make the float 11 follow the vertical movement of the liquid due to the inflow and outflow of the liquid. By making the gap between the baffle plate 22 and the stabilizing plate 23 as close as possible to the inner surface of the main body 1 so as not to touch the inner surface, when the liquid tries to flow to the gas side through the gap between the baffle plate 22 and the stabilizing plate 23, the upstream side of the gap is prevented. The float 11 generates turbulent flow and suppresses the flow of liquid through the gap.
The baffle plate 22 and the stabilizer plate 23 are designed to prevent liquid from flowing into the part located in the gas and covering the float 11 with the liquid.
The best results for the various functions described above can be obtained by slanting the outer circumferential side lower than the inner circumferential side and further setting the height and spacing ratio of the two baffle plates 22, 22 to 1:1. did it.

C. Effects of the invention The float type accumulator of the present invention configured as described above prevents the float from swinging horizontally when liquid is introduced into and taken out from the main body at high speed by rollers provided above and below the float. This prevents the valve from being closed due to the float getting caught in the main body, and preventing liquid from flowing into the gas side due to the float being biased against the main body, thereby preventing the gas inside the main body from being released into the liquid circuit. Gas will not infiltrate and reduce the amount of liquid covered by the float.

The stabilizing plate and baffle plate provided on the outer peripheral surface of the float between the above-mentioned upper and lower rollers cause turbulent flow on the upstream side of the gap when liquid tries to flow into the gap between these outer edges and the inner surface of the body. Since the passage of liquid is suppressed and the float is prevented from being covered with liquid, gas infiltration into the liquid due to this is prevented.

It has the following unique effects.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing an embodiment of the float type accumulator according to the present invention, Fig. 2 is a plan view with the same upper plate removed, and Fig. 3 is a longitudinal sectional side view showing a conventional float type accumulator. It is a diagram. 1...Main body, 11...Float, 20...Roller, 22...Baffle plate, 23...Stabilizer plate.

Claims (1)

[Scope of utility model registration request] In an accumulator that houses a float inside a main body and uses the float to separate gas and liquid, rollers that roll into contact with the inner surface of the main body are installed at three or more locations on the outer periphery of both ends of the float, A float type accumulator characterized in that a stabilizer plate located in the liquid with an outer edge close to the inner surface of the main body and a baffle plate located in the gas are attached to the outer periphery of the float between the upper and lower rollers.