JPS6039519Y2 - Pump automatic operation device - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic operation device for a pump, and in particular, the elements of the automatic operation mechanism are compactly installed in a pipe body provided between a pump discharge port and piping, and the dimensions of the entire pump and This reduces the installation area.

In conventional pump automatic operation devices, a pipe body with a built-in resistance valve and a mounting base extending from the top is provided between the pump discharge port and the piping, and a differential pressure diaphragm and a pressure receiving diaphragm are mounted on this mounting base. Attach a diaphragm case with a built-in
A switch is provided on the diaphragm case and is controlled to open and close by relative movement of the two diaphragms.

However, in this type of conventional automatic driving device, the differential pressure diaphragm and the pressure receiving diaphragm are adjacent to each other in a direction parallel to the water channel of the tube, so the diaphragm case in which both the diaphragms are built is also attached to the tube. Therefore, the automatic operation device protrudes from the side of the pump by the extension of the diaphragm case, which has the drawback of increasing the overall size and installation area of the pump.

The present invention eliminates the above-mentioned drawbacks and reduces the overall size and installation area of the pump. Specifically, it incorporates a resistance valve between the pump discharge port and the piping, and has a mounting base on the top surface. An extended pipe body is provided, and a diaphragm case in which a differential pressure diaphragm and a pressure receiving diaphragm are arranged side by side in a direction orthogonal to the water channel of the pipe body is mounted on this mounting base. Constructed to support a switch whose opening/closing is controlled by the relative movement of the
As a result, the length of the diaphragm case in the pipe body direction is shortened by the amount that both the diaphragms are arranged in parallel in the direction perpendicular to the water channel of the pipe body, and the automatic operation device having this diaphragm case can be seen from the side of the pump. This allows it to be compactly assembled into the pump body without protruding.

Next, one embodiment of the present invention will be described.

In the figure, 1 indicates a pump, which consists of a back casing 3 integrally formed with a discharge passage 2 and a front casing 5 provided with a suction port 4, forming an air-water separation chamber 7 above the pump chamber having an impeller 6. are doing.

8 is a motor, 9 is a guide vane, 10 is a pressure port leading to a jet, and 11 is a pressure storage cell consisting of a hemispherical elastic membrane 12 and a sealing lid 13.

14 is a pipe (
(not shown), which has a resistance valve 15 installed therein, and has a mounting base 14' for an automatic operation device 16 on its upper surface extending in a direction perpendicular to the pipe waterway. ing.

The automatic operation device 16 consists of a differential pressure diaphragm 18 to which a magnet 17 is attached, a pressure receiving diaphragm 20 that operates the lever 19 in reverse, and a reed switch 21 attached to the free end of the lever 19.
Both diaphragms 18 and 20 are arranged side by side in a direction perpendicular to the water channel of the tube body 14 and mounted on the mounting base 14'.

The pressures P1 and P2 before and after the resistance valve 15 are transferred to the pressure passage 23, respectively.
．． The rear pressure P2 of the resistance valve 15 is introduced into the pressure receiving chamber of the pressure receiving diaphragm 18 via the pressure passage 25.

The automatic operation device operates the reed switch 21 by the magnet 17 in response to the relative movement of both diaphragms 18 and 20.
This controls the opening and closing of the pump and starts and stops the pump.

26 is a pressure regulating valve provided at a communication port between the steam/water separation chamber 7 and the discharge passage 2, 27 is a pump head, and 28 is a cover.

According to the present invention, a pipe body with a built-in resistance valve and a mounting base extending from the upper surface of the roof is provided between the pump discharge port and the pipe, and a differential pressure diaphragm and a pressure receiving diaphragm are mounted on the pipe body on the mounting base. A diaphragm case was installed that was arranged in parallel in a direction perpendicular to the waterway of the body, and a switch was supported on this case, which was controlled to open and close by the relative movement of the two diaphragms, so that the pipe could be pumped. By interposing the diaphragm between the outlet and the pipe, the length of the diaphragm case in the pipe body direction is shortened by the amount that both the diaphragms are arranged in parallel in the direction orthogonal to the water channel of the pipe body, and the length of the diaphragm case in the pipe body direction is shortened. The automatic operation device having the automatic operation device is compactly integrated into the pump body without protruding from the side of the pump, and therefore the base and cover of the pump are also made smaller, and the overall size and installation area of the pump can be reduced.

[Brief explanation of drawings]

FIG. 1 is a front view of a pump equipped with the device of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a longitudinal sectional side view. FIG. 4 is a sectional view of the device of the present invention, and FIG. 5 is a sectional view of the same in the other direction. 1...Pump, 2...Discharge port, 3,5
... Pump casing, 8 ... Motor, 11 ... Pressure storage cell, 14 ... Pipe body,
14'...Mounting base, 17...Magnet, 18...Differential pressure diaphragm, 19...
... Lever, 20 ... Pressure receiving diaphragm, 21
...Reed switch, 22...Diaphragm case.

Claims (1)

[Scope of utility model registration request] A pipe body with a built-in resistance valve and a mounting base extending from the top surface is provided between the pump discharge port and the pipe, and a differential pressure diaphragm and a pressure receiving diaphragm are placed on the mounting base and perpendicular to the water channel of the pipe body. An automatic operation device for a pump comprising a diaphragm case arranged in parallel in the direction, and a switch supported on the case which is controlled to open and close by relative movement of the two diaphragms.