JP3137999U - Air pump abnormality alarm device - Google Patents

Abstract

The present invention provides an alarm device with high quality and reliability which does not easily cause corrosion aging of a contact and does not cause a contact failure.
A pressure receiving chamber 31 provided in a hollow container 3, a fluid vent h provided at one end of the pressure receiving chamber, and an airtight movable part 4 provided at the other end of the pressure receiving chamber. Detecting means for detecting an abnormality by increasing / decreasing the back pressure in the pressure receiving chamber, with one end of the spring 6 fixed to one surface of the movable portion, the other end of the spring held by a fixed plate 7 2, a detection means including a magnetic switch 10 provided with a support 8 through which the spring is inserted in the movable portion, a permanent magnet 9 mounted on a free end of the support, and provided away from the permanent magnet. And an upper case 11 for storing the detection means, and an alarm means 13 that operates in response to a signal from the detection means.
[Selection] Figure 1

Description

  The present invention relates to an abnormality alarm device for notifying a user, a maintenance manager, or the like of occurrence of an abnormality in an electromagnetic vibration type air pump. More specifically, the present invention relates to an abnormality alarm device for an air pump mainly used for supplying oxygen to a domestic septic tank or a fish tank.

  As an abnormality detection device for an air pump related to the prior art, there is one disclosed in Patent Document 1 (see FIG. 8), and it branches off in the middle of an air diffusion tube 103 for supplying air from a diaphragm pump 101 to a septic tank. Then, the cylinder body 113 is attached in the vertical direction, and an air exhaust hole 116 is opened in the upper part. A ring-shaped support plate 118 having a through-hole 117 is provided in the middle of the cylindrical body, a fixed-side electrode 119 is provided on the upper surface, and a rod 121 penetrating through the through-hole is attached. A push-up plate 123 that pushes the rod upward by receiving the wind pressure is attached to the side, and a movable side electrode 124 is attached to the upper side of the rod penetrating the through hole so as to face the fixed side electrode. It is characterized by a structure connected to.

Utility Model Registration No. 3132788 Specification

  However, in the case of the abnormality alarm device described in Patent Document 1, the air leaks from the gap with the push-up plate in the cylinder, and is likely to flow out from the air exhaust hole provided in the upper part of the cylinder, Since the contacts of the fixed side electrode and the movable side electrode are exposed, there is a problem that the contact is likely to be corroded and the quality reliability of the contact failure is lacking. An object of the present invention is to provide an apparatus in which these problems are improved.

An abnormality alarm device for a fluid pump according to a first embodiment of the present invention includes a pressure receiving chamber provided in a hollow container, a fluid vent provided at one end of the pressure receiving chamber, and the other end of the pressure receiving chamber. A movable portion having airtightness provided, one end of a spring is fixed to one surface of the movable portion, the other end of the spring is held by the fixed plate, and the movable portion increases or decreases the back pressure in the pressure receiving chamber. In the detection means for detecting anomalies with changes,
A column through which the spring is inserted is provided on the movable part,
A permanent magnet is attached to the free end of the support column, and a detection means comprising a magnetic switch provided apart from the permanent magnet, an upper case for storing the detection means, and an alarm that is activated by a signal from the detection means And a means.

  In the fluid pump abnormality alarm device according to the second embodiment of the present invention, one end of the spring is fixed to the movable part via a spring receiving plate, and a spring guide is provided on each of the spring receiving plate and the fixed plate. Each end surface of the spring guide is in contact with the normal back pressure.

  Further, in the fluid pump abnormality alarm device according to the third and fourth embodiments of the present invention, the movable part having airtightness is made of an elastic diaphragm, or the movable part having airtightness is sealed with a bottomed float. It is characterized by being made of wood.

  In the fluid pump abnormality alarm device according to the fifth aspect of the present invention, the alarm means is separated from the detection means, the alarm means is housed in a unit case, and between the alarm means and the detection means. The connection is a wired means.

  In the fluid pump abnormality alarm according to the sixth aspect of the present invention, the alarm means is separated from the detection means, the alarm means is housed in a unit case, and between the alarm means and the detection means. The connection is characterized by wireless means including infrared rays.

  In the present invention, the magnetic switch means a reed switch, a reed relay, a hall element, or the like. The alarm means means a buzzer, an alarm, a lamp and the like.

  The abnormality alarm device of the present invention utilizes the movement of the pressure receiving plate by the pressure (pressurization or suction pressure) of the fluid (air), and there is no air leakage due to the structure of the pressure receiving chamber closed and the movable part, and the detection means The contact part of this product is excellent in quality reliability and remote operability due to the sealed structure of dust raindrop ingress protection.

  The air pump abnormality alarm device 1 (see FIGS. 1 to 2) of the present invention includes a pressure receiving chamber 31 defined in a hollow container 3, a fluid vent h defined at one end of the pressure receiving chamber 31, An airtight movable part 4 provided movably at the other end of the pressure receiving chamber 31 and a fixed plate 7 provided immovably in the container 3 so as to face the movable part 4 are provided. . One end of a spring 6 is fitted into a spring receiving plate 5 provided at the center of one surface of the movable portion 4, and the other end (upper portion) of the spring 6 is held by the fixed plate 7. With this configuration, the detecting means of the abnormality alarm device 1 according to the present invention is such that the movable part 4 detects an abnormality by an increase / decrease change in the back pressure in the pressure receiving chamber 31.

  In the present embodiment, a support column 8 is provided at the center of the spring receiving plate 5 of the movable unit 4, and a permanent magnet 9 is attached to the free end (head) of the support column 8. Furthermore, it comprises a detection means 2 comprising a magnetic switch 10 disposed from the permanent magnet 9 through a gap g, and an upper case 11 for storing the detection means 2, and operates according to a signal from the detection means 2. Alarm means 13 is provided. The magnetic switch 10 includes a reed switch, a reed relay, a hall element, and the like. Further, a buzzer, an alarm, a lamp, or the like can be employed as the alarm unit 13.

  The movable part 4 having airtightness may be a rubber or metal extending diaphragm (diaphragm).

  In order to make the movement of the movable portion 4 smooth, it is preferable to provide an air discharge hole 12 (for example, Goretech with good ventilation) in a part of the upper case 11 or the fixed plate.

In FIG. 1, when the air pressure from the air pump is normal, the diaphragm (diaphragm) of the movable part 4 receives. The total pressure P is the product of the effective pressure receiving area S of the movable part 4 and the pressure Pa at point a shown in FIG. The drag F of the spring 6 is the product of the spring constant K and the deflection X of the spring 6.
(P = S ^* Pa, F = K ^* X) Formula (1)

  That is, in the formula (1), when the condition of total pressure P> drag F is satisfied, the diaphragm pushes up the movable part 4, and the permanent magnet 9 at the head of the column 8 disposed in the central part of the spring receiving plate 5. Rises with it.

  On the other hand, in FIG. 2, when an abnormality occurs in the air pump, the air pressure from the air pump decreases to a pressure Pa or lower at point a in FIG. 4 is pushed down, and the gap g (see FIG. 4) between the permanent magnet 9 and the magnetic switch 10 becomes large, and the unit case of the alarm means 13 generates a buzzer 15 and a lamp 14 for an alarm. The time for the buzzer to sound can be set appropriately by the user according to the usage environment (not shown) built-in electronic timer (the alarm buzzer sound may be annoying to the neighborhood), It also has an adjustment function.

  In addition, it is a mechanism that switches between the battery and the commercial power supply by the changeover switch 16 in accordance with the environment in which the septic tank or the like is installed.

  The abnormality alarm device 1 according to the embodiment of the present invention (see FIG. 3) is a structure in which the movable part 4 is of the bottomed float 4 and has a structure in which a sealing material S is provided on a part of the outer periphery to ensure airtightness. is there. The sealing material S may be an O-ring or Y-ring having elasticity. A spring receiving plate and a spring guide are integrally formed at the center of the float 4.

  In the abnormality alarm device 1 (see FIG. 4) according to another embodiment of the present invention, a structure is provided in which an opening W is provided in the central portion of the fixing plate 7 and a permanent magnet is attached to the head of the column through the column 8. It is. The movable part 4 may be a diaphragm and a bottomed float.

  The abnormality alarm device 1 according to still another embodiment of the present invention has a structure that enables simple connection and fixing between the discharge port of the air pump 19 and the septic tank 21 shown in FIG.

It is sectional explanatory drawing which shows an example of the normal state of the alarm device of this invention. It is sectional explanatory drawing which shows an example of the abnormal state of the alarm device of this invention. It is sectional explanatory drawing which shows an example of the normal state of the alarm device of this invention. It is sectional explanatory drawing which shows an example of the normal state of the alarm device of this invention. It is sectional explanatory drawing which shows an example of the unit case of this invention. It is a graph which shows the area | region of the working pressure in the relationship between the air volume Q and the back pressure (load) H. It is mounting explanatory drawing which shows an example of implementation of this invention. It is sectional explanatory drawing which shows the conventional abnormality detection apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Alarm apparatus 2 Detection means 3 Hollow container 4 Movable part (diaphragm or float)
DESCRIPTION OF SYMBOLS 5 Spring receiving plate 6 Spring 7 Fixed plate 8 Support | pillar 9 Permanent magnet 10 Magnetic switch 11 Upper case 12 Air exhaust hole 13 Alarm means 14 Lamp 15 Buzzer 16 Changeover switch 19 Air pump 20 Piping 21 Septic tank 31 Pressure receiving chamber 51, 71 Spring guide g Air gap h Ventilation hole W Opening

Claims (8)

A pressure receiving chamber provided in a hollow container, a fluid vent provided at one end of the pressure receiving chamber, and an airtight movable part provided at the other end of the pressure receiving chamber, In a detection means in which one end of a spring is fixed to one side, the other end of the spring is held by the fixed plate, and the movable part detects an abnormality due to increase / decrease in back pressure in the pressure receiving chamber,
A column through which the spring is inserted is provided on the movable part,
A permanent magnet is attached to the free end of the support column, and a detection means comprising a magnetic switch provided apart from the permanent magnet, an upper case for storing the detection means, and an alarm that is activated by a signal from the detection means And an air pump abnormality alarm device. One end of the spring is fixed to the movable part via a spring receiving plate, a spring guide is provided on each of the spring receiving plate and the fixed plate, and each end surface of the spring guide abuts during normal back pressure. The abnormality alarm device for an air pump according to claim 1, wherein 3. The abnormality alarm device for an air pump according to claim 1, wherein the movable part is made of an elastic diaphragm. 3. The air pump abnormality alarm device according to claim 1 or 2, wherein the airtight movable part is made of a bottomed float and a sealing material. 5. The air pump according to claim 3, wherein the alarm unit is separated from the detection unit and housed in a unit case, and the connection unit between the alarm unit and the detection unit is wired. Abnormal alarm device. 5. The air pump abnormality alarm according to claim 3 or 4, wherein said alarm means is separated from said detection means and accommodated in a unit case, and said connection means between said alarm means and said detection means is wireless. apparatus. 7. The air pump abnormality alarm device according to claim 5, wherein the alarm means has an electronic timer, and the time for issuing an alarm can be set. 8. The abnormality alarm device for an air pump according to claim 7, wherein power supply to said alarm means is made by a dual power supply system and a changeover switch is provided.

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