JPS58197496A - Hot-water circulating pump - Google Patents

Abstract

PURPOSE:To exhaust air generated in a pump and pipings automatically and effectively by furnishing an automatic exhaust device, which accommodates a float valve to open and shut the exhaust hole while is moved approx. prombly by the instreaming air from an air chamber. CONSTITUTION:Bubbles generated in a hot-water circulating pump as illustrated and associated pipings flow in a case 13 together with hot water 15 from an air chamber 11 through a male threaded part 13a. In the case of less amount of air production, the level 15a of hot water 15 in the case 13 rises, and the valve element 16 floats up in the case 13 to block the exhaust hole 14a automatically. In the case of much production bubbles, the level 15a of hot water 15 in the case sinks, so that the valve element 16 sinks in the case 13 to open the exhaust hole 14a automatically for exhaustion of the air. Thus the air generated in a pump and associated pipings can be exhausted automatically and effectively, which assures prevention of noise generation, air locking, etc.

Description

[Detailed Description of the Invention] This invention is an improvement of a hot water circulation pump device used for houses, small buildings, greenhouse horticulture, etc. A hot water circulation pump device that can automatically and efficiently discharge static electricity generated in the circulation pump and in the piping connected to the suction and discharge ports even when various types of split membranes occur. This is related to this.

If the discharge from the system is incomplete, there are drawbacks such as a decrease in pump performance, generation of noise from within the system, abnormal wear of the mechanical seal of the pump, and aerodynamics within the system.

This invention was made in an attempt to eliminate such drawbacks, and as shown in FIGS. Let me explain first.

Figure 1 is a partial cross-sectional view when the axis of the motor is horizontal and the piping is vertical (at the top of the discharge pipe), and Figure 2 is a partial cross-sectional view when the axis of the motor is horizontal and the piping is vertical (at the bottom of the discharge pipe). Sectional view, No. 8
The diagram is ″(motor axis is vertical and piping is horizontal (discharge pipe to the right)
4 is a front view when the axis of the motor and the piping are horizontal, and FIG. 5 is a sectional view of the automatic exhaust system. In the figure, l is the drive source ``(motor), 2 is the load side bracket of this ``(motor 1), 3 is one end of the drive source ``(motor 1)'', and 3 is the load side of the drive source (v + bracket 2) via the ball bearing (not shown). 4 is a mechanical seal fitted to the rotor shaft 8 and the load-side bracket 2, and 5 is a flywheel fitted to one end of the rotor 8. s 5
a is the suction side of this flywheel 5, 5b is the discharge side of the flywheel 5,
Reference numeral 6 denotes a pump casing that is watertightly connected to one end surface of the load side bracket 2 via an O-ring 7, and has a suction side opening 6a and a discharge side opening 6b disposed on the same axis, and each A male thread 6o is provided on one outer circumferential surface of each of the openings 6a, 6, and 4. Reference numerals 8 and 9 denote a suction port and a discharge port respectively connected to the suction side opening 6a and the discharge +tllll opening 6b, each of which has a female thread 8a*9a cut into its inner circumferential surface. Reference numeral 10 indicates a pair of nuts screwed onto the male screws 6o and connects the ridge side opening 6a and the suction port 8, and the discharge @1 opening 6b and the discharge port 9, respectively. 11 indicates the load side bracket 2 and the pump casing. The air chamber 2a is connected to the air chamber 11 through the through female thread provided on the load side bracket 2f, and the air chamber 2a is connected to the outside air through the air chamber 11 and the rotor. The crotch A is carved at an angle of 451 points with the axial direction of the shaft 8. Reference numeral 12 denotes an automatic exhaust device, in which a male screw portion 1f3B carved in a bent portion of the case 18 is a through-hole female screw 2a.
) The air chambers 111 and 111 are screwed together and communicated with each other.
enter. 18b is an opening provided at the other end of the case 1B, 14 is a cover airtightly connected to this opening 18b via a gasket 14, and 14a is a small hole provided in the center of this cover 14. The exhaust hole is located approximately perpendicular to the ground surface. 15 moves the case 1 from the air chamber 11 via the male threaded part tea, and raises the water level in the case 13?
This valve body is a float valve that closes or opens the exhaust hole 141k.

16a is the main body of this valve body 16, 16b is this main body 16&
The protrusion connected to the upper end of, 1ec+, i this protrusion 1
1□.

The backing connected to the upper end surface of the exhaust hole 14
The male threaded portion t8a is designed to close or open the inner opening of the valve body 16.
It is screwed and connected with one female thread 2at through five different angles.

The behavior of something configured like the following Nico? Let me explain this first. After the installation of the hot water circulation pump device and the connection of the piping system are completed, when the operation switch of the electric motor 1 is turned on, the rotor shaft 8 and the honeycomb wheel 5 rotate in a predetermined direction t, and the hot water 15 in the water heater, for example, flows through the suction pipe → Suction port 8 Suction (ill open bottom part 6a → Suction side 5a of the flywheel → Discharge side 5b of the flywheel → Discharge side open bottom part 6h → Discharge port 9 → Discharge pipe → Other piping system → Circulation like in a water heater When air bubbles occur inside the hot water circulation pump and piping system, these air bubbles will displace the hot water.
5 and flows into the case 18 from the air chamber 11 via the male threaded portion 18a. If there is less air flowing into the case 18 (in other words, less air flow occurs), the water level 15 of the hot water 15 in the case 18 rises, and the valve body 16 floats inside the case 13. and automatically closes the exhaust hole 14B. If too many air bubbles are generated, the water level IF)a of the hot water 15 inside the case 18 will drop, so the valve body 16 will move down inside the case 18 and automatically open the exhaust hole 14a to air the air. It is necessary to discharge the water.

As explained above, this invention provides an air chamber on the discharge side of the hot water circulation pump's hot water circulation pump, and the inside of the case is approximately perpendicular to the ground surface by means of an air dragon that is connected to this air chamber and flows in from the air chamber. The automatic exhaust device has a valve body that automatically opens or closes the exhaust hole provided in the case by moving to the side, and is connected to the air chamber at a predetermined angle with the direction of movement of the valve body. The air generated in the pump part and piping can be automatically removed by changing the direction of the axis of the pump part and the direction of the axis of the suction port and discharge port of the pump part.
There is a young fruit that can be efficiently discharged, thereby eliminating the various deficiencies mentioned above and providing a 7M water circulation pump device that can operate smoothly.

[Brief explanation of drawings]

Figures 1 to 4 show various configurations of an embodiment of the present invention. Figure 2 is a partial cross-sectional view when the axis of the electric motor is horizontal and the piping is vertical 1K (lower part of the discharge pipe).
4 is a front view when the axis of the motor and piping are horizontal, and FIG. 5 is a sectional view of the automatic exhaust system. In the figure, 1 is the electric motor, 2 is the load side bracket, 8 is the rotor shaft, 4 is the mechanical seal, 5
5a is the suction side, 5b is the discharge side, 6 is the casing, 8 is the suction port, 9 is the discharge port, 10 is the oak), 11 is the air chamber, 12 is the automatic exhaust device, 1B is the case, 1 18 & is a male thread, 2a is a female thread, 14 is a cover,
14a is an exhaust hole, 15 is hot water, and 16 is a valve body, and the same reference numerals in the drawings indicate the same or corresponding parts. Agent Hiro Shu Shin - Figure 1 Figure 2

Claims (1)

[Claims] (1) A 'tft motor and a
This pump part has a suction port and a discharge port disposed on the same axis, and a 7u air chamber formed on the discharge side of the flywheel of the pump part, and this air chamber. An automatic exhaust system is installed in which one end is connected to and discharged from the air chamber, and the air flows into the air chamber from the air chamber. a hot water circulation pump device, characterized in that the automatic exhaust device is coupled to the air chamber at a predetermined angle with respect to the moving direction of the valve body; (2) the valve body is a float valve; Hot water () six-ring pump device ff according to Claim 1. (3) Hot water V& Ring pump device.