JP2000130346A - Electromagnetic diaphragm pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the absorption and elimination of the vibration from a vibrator and a diaphragm by substantially suspending a box-shaped electromagnetic case in a floating state by suspending members formed by coil spring rings. SOLUTION: Four supports 8 for suspending an electromagnetic case 10 are standed near four corners of the electromagnetic case 10 on a bottom base plate 7. Each one end 3a (having the shape of hook) of suspending members 3 formed by coil springs (extension spring) is locked in each engagement hole 8a formed on an upper part of the supports 8. On the other hand, the other end 3b of the suspending member 3 is locked in an engagement hole 10a formed on a lower part of the electromagnetic case 10. By applying this structure, the electromagnetic case 10 is substantially suspended in a floating state by the tensile force of the suspending members formed from the coil springs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic diaphragm pump, and more particularly, to a method in which an alternating current is applied to an opposing electromagnet to reciprocate a vibrator interposed between the opposing electromagnets at the same frequency as the AC power supply. An electromagnetic type that moves and uses a deformation of a pair of diaphragms arranged opposite to both ends of the vibrator to continuously discharge compressed gas by the change in volume in the case partitioned by the diaphragm and the action of the valve The present invention relates to a diaphragm pump. Such an electromagnetic diaphragm pump is, for example, for aeration of an aeration-type septic tank, for oxygen supplementation of fish farming, for air blowing such as a bubble bath,
Used for small compressors and the like.

[0002]

2. Description of the Related Art Conventionally, an electromagnetic diaphragm pump has been used as one of pumps for aerating a septic tank or supplementing oxygen for fish farming.

[0003] Such an electromagnetic diaphragm pump is
For example, as disclosed in Japanese Utility Model Laid-Open Publication No. 2-83387, a box-shaped electromagnet case having an open top, a pair of electromagnets arranged and fixed to face each other in the electromagnet case, A vibrator interposed between the opposing surfaces of the pair of electromagnets and reciprocating with a change in the polarity of the electromagnets is provided, and a pair of diaphragms arranged to face each other are formed at both ends of the vibrator. Have been.

In an electromagnetic diaphragm pump, a vibrator reciprocates in accordance with a change in polarity of an electromagnet, and a diaphragm connected to the vibrator vibrates.
The operation of sucking external air into the compression chamber and compressing and discharging the sucked air acts so as to be continuously repeated.

[0005]

The electromagnet case used in such an electromagnetic diaphragm pump is disclosed in Japanese Utility Model Application Laid-Open No. 2-83387 or the like in order to directly receive vibration from a vibrator or a diaphragm. As described above, a structure is generally adopted in which a vibration isolating rubber is arranged below the electromagnet case to absorb and remove vibration of the electromagnet case as much as possible.

However, a structure in which the vibration isolating rubber is merely disposed below the electromagnet case does not provide a sufficient vibration isolating effect (the diaphragm is not deteriorated and the vibration is relatively small even at the initial stage). Sufficient) and further improvement is required. In particular, when the anti-vibration rubber has deteriorated due to long-term continuous operation, the vibration becomes even more intense than in the initial stage where there is no deterioration, and sufficient anti-vibration measures cannot be taken with the conventional method.

The present invention has been made in view of such a situation, and its object is to absorb and remove vibrations from a vibrator or a diaphragm more than ever before.
An object of the present invention is to provide an electromagnetic diaphragm pump having an excellent vibration-proof effect.

[0008]

In order to achieve the above object, the present invention provides an electromagnet case having a housing shape, a pair of electromagnets arranged in the electromagnet case so as to face each other, and A vibrator interposed between opposing surfaces of the pair of electromagnets and reciprocating in a direction perpendicular to the opposing direction of the electromagnets with a change in the polarity of the electromagnets, and a pair of vibrators arranged to oppose both ends of the vibrator. An electromagnetic diaphragm pump having a diaphragm having elasticity and a valve case body separated by the diaphragm and having a suction valve and a discharge valve, wherein the housing-shaped electromagnet case is a suspension member formed of a coil spring. Thereby, it is configured to be suspended substantially in a floating state.

In the present invention, preferably, a column for suspending the electromagnet case is erected on the bottom base plate, and one end of the suspension member is locked to the column, and the other end of the suspension member is fixed to the column. The end of the electromagnet case is engaged with the electromagnet case to form a floating state of the electromagnet case.

In the present invention, preferably, four columns are erected near four corners of a case-shaped electromagnet case, and one end of the hanging member is locked to each of the columns. ,
The other end of the suspending member is engaged with a lower portion of the electromagnet case to form a floating state of the electromagnet case.

According to a preferred aspect of the present invention, the other end of the suspension member formed of a coil spring engaged with a lower portion of the electromagnet case is substantially aligned with the axial direction of the coil spring main body which functions as a coil spring. It is configured to protrude in a right angle direction and to form a winding shape wound one or more turns.

In a preferred aspect of the present invention, the other end of the hanging member is formed in a winding shape wound in a winding range of 1.1 to 2.0.

The present invention is preferably configured such that an anti-vibration rubber for preventing the electromagnet case from oscillating is interposed in a gap between the bottom base plate and the electromagnet case bottom.

As a preferred embodiment of the present invention, a valve case lid is attached to the valve case main body, and the valve case lid has a hose connecting portion projecting to the outside. The upper port of the mold rubber hose is inserted and the vicinity of the lower port of the L-shaped rubber hose is inserted and fitted into the hole of the bottom base plate 7.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view schematically showing a state in which an electromagnetic diaphragm pump 1 of the present invention is disassembled into individual main parts.

FIG. 2 is a sectional front view showing essential parts of the main part of the electromagnetic diaphragm pump of the present invention.
FIG. 1 is a cross-sectional plan view showing a necessary portion of a main part of an electromagnetic diaphragm pump of the present invention.

FIG. 4 is a perspective view showing a state in which an electromagnet case used in the electromagnetic diaphragm pump of the present invention is suspended in a floating state. FIG. 5 shows a preferred form of a suspension member comprising a coil spring. FIG.

As shown in FIG. 1, the lower tank container 5
A plate-shaped bottom base plate 7 is attached and fixed to the upper surface of the base plate so as to be in a sealed state. An electromagnet case 10 is installed on the plate-shaped bottom base plate 7 near the approximate center thereof. The electromagnet case 10 according to the present invention uses four columns 8 erected near the four corners of the bottom base plate 7, and a suspension member (shown in FIG. 1) formed of a coil spring hung on each column 8. Has not been)
It is configured to be suspended substantially in a floating state. This configuration is the first essential part of the present invention, and will be described later in detail. Further, as a more preferred embodiment, an anti-vibration rubber 9 for preventing the electromagnetic case from oscillating is interposed in a gap between the bottom base plate 7 and the bottom of the electromagnetic case 10.

In the case of this embodiment, the electromagnet case 10 is an electromagnet case body 11 having a bottomed container shape having an opening.
And a plate-shaped electromagnet case lid 1 for covering the opening.
5 is constituted.

In the electromagnet case 10, a pair of electromagnets 21 and 25 arranged to face each other is interposed between the opposing surfaces of the pair of electromagnets 21 and 25. A vibrator 30 that reciprocates in a direction perpendicular to the opposite direction is inserted. Further, the vibrator 30
The connecting shafts 31 are fixedly arranged at both ends of the vibrator 30, whereby a pair of diaphragms 40 facing the both ends of the vibrator 30 are arranged.

At the center of the diaphragm 40, a diaphragm electromagnet side center plate 70 and a diaphragm valve case side center plate 80 are fixed in a sandwiched state, and these coupling plates 70, 80 substantially vibrate. The child 30 (the connecting shaft 31, 31) is fixed.

The outer peripheral surface of the diaphragm 40 is fixed to the side surface of the electromagnet case 10, and the valve case body 50 and the valve case cover 60 are pressed so as to press the diaphragm 40.
Are fixed to both sides of the electromagnet case 10.

The valve case lid 60 has a hose connecting portion 61 protruding to the outside. An upper port 91 of an L-shaped rubber hose 90 is inserted into the connecting portion 61, and a lower port 95 of the L-shaped rubber hose 90 has a bottom portion. It is inserted into the hole 7a of the base plate 7.

The electromagnet case 10 arranged on the bottom base plate 7 in this way and the above-mentioned main members fixed to it are completely covered by the outer case 100, and the bottom of the outer case 100 is usually Are fixed in a hermetically sealed state while being in contact with the peripheral edge of the lower tank container 5 or the peripheral edge of the bottom base plate 7. Outer case 100
Has an air filter (not shown) at its upper part, and external air is supplied to the outer casing 10 through the air filter.
The air filter is fixed by the air filter cover 101 so as to flow into the inside of the air filter. Reference numeral 110 in FIG. 1 indicates a rubber leg.

Next, the basic structure of the electromagnetic diaphragm pump of the present invention will be described in more detail with reference to FIGS.

As shown in FIGS. 2 and 3, a pair of electromagnets 21 and 25 arranged opposite each other have E
Type electromagnet cores 22 and 26 and electromagnet coils 23 and 27
Are wound around the electromagnet bobbins 24 and 28. The electromagnet bobbins 24 and 28 each have a flange 2 at each end.
The electromagnet bobbins 24 and 28 are assembled in a cylindrical shape having 4a and 28a inserted into the central cores 22a and 26a of the E-shaped electromagnet cores 22 and 26, respectively. Electromagnet coil 2 of electromagnets 21 and 25
An AC power supply is connected to 3, 27 so that the number of magnetic pole changes (polarity changes) occurs the same number of times as the frequency of the AC power supply.

In such a gap between the opposing surfaces of the pair of electromagnets 21 and 25, a vibrator 30 that reciprocates in accordance with a change in polarity of the electromagnets 21 and 25 is mounted so as not to contact the electromagnets. In the case of the present embodiment, the vibrator 30 has a plate body 35 and connection shafts 31 formed at both ends thereof, and the plate body 35 has four rectangular permanent magnets having different polarities. The magnets 36, 36 (for example, N
), 37, 37 (for example, S pole) are buried.

At both ends of the vibrator 30, a pair of disc-shaped elastic bodies (for example, rubber) 40 having a center hole are disposed so as to face each other.
The outer peripheral flange portion 41 is sandwiched and fixed between the electromagnet case 10 and the valve case main body 50. Diaphragm 4
The inner peripheral portion 45 of the diaphragm 0 is fixed while being sandwiched between the diaphragm electromagnet-side center plate 70 and the diaphragm valve case-side center plate 80, and the vibrator 30 is fixed to these coupling plates 70, 80. (It is screwed at the tip of the connecting shaft 31, 31).

As shown in FIG. 3, the electromagnet case 10
Case body 50 and valve case lid 60 secured to
Thus, an intake chamber 150 is formed.
Communicates with the inside of the electromagnet case 10 through a communication hole 59. An intake valve 120 is mounted on the intake-side outer wall 51 of the valve case main body 50 that partitions the intake chamber 150 from inside. By the valve action of the suction valve 120, air is sucked into the diaphragm chamber 160 through the valve vent 121 formed in the outer wall 51. The diaphragm chamber 160 includes the diaphragm 40 and the intake-side outer wall 51 of the valve case body 50.
And a discharge side outer wall 55, and a discharge valve 130 is mounted on the discharge side outer wall 55 from the outside. Due to the valve action of the discharge valve 130, the discharge side outer wall 5
The air in the diaphragm chamber 160 is discharged to the discharge chamber 170 through the valve ventilation hole 131 formed in the fifth chamber 5. The air discharged into the discharge chamber 170 passes through the L-shaped rubber hose 90, enters the lower tank container 5, and
It is discharged through the discharge port 5a (FIG. 1).

The valve action of the suction valve 120 and the discharge valve 130 is performed based on the following operation. In other words, the vibrator 30 reciprocates in the directions indicated by arrows (a) and (b) at the same frequency as the AC power supply in accordance with the polarity change of the electromagnets 21 and 25 connected to the AC power supply. The diaphragms 40 disposed at both ends of the vibrator 30 in synchronization with the movement of the vibrator 30 deform around the center of the diaphragm 40 with the same displacement as the stroke of the vibrator 30. As a result, the capacity of the diaphragm chamber 160 changes, and if attention is paid to the diaphragm chamber 160 on the right side in FIG. 3, when the diaphragm 40 is deformed in the direction of the arrow (a), the diaphragm chamber 160 expands to a negative pressure. Become
The suction valve 120 opens, and air is sucked into the diaphragm chamber 160. Conversely, when the diaphragm 40 is deformed in the direction of the arrow (b), the diaphragm chamber 160 is compressed to a positive pressure, the discharge valve 130 is opened, and air is discharged from the inside of the diaphragm chamber 160 to the discharge chamber 170. These operations are performed alternately and continuously, and the compressed air is continuously discharged. The basic operating principle itself including such a valve mechanism is a known technique.

The essential part of the present invention in the present invention lies in the manner of installing the electromagnet case 10 as described above. The electromagnet case 10 of the present invention is substantially mounted on the bottom base plate 7 as shown in FIG. Suspended in a floating state.

That is, on the bottom base plate 7,
Four columns 8 for suspending the electromagnet case 10 are erected near four corners of the electromagnet case 10 (in FIG. 4, two are hidden behind). One end 3a of the suspending member 3 formed of a coil spring (tensile spring) is provided in each of the engagement holes 8a provided on the upper portions of the columns 8.
(Having a hook shape) is locked. On the other hand, the other end 3b (having a hook shape) of the suspension member 3 is engaged with an engagement hole 10a provided in a lower portion of the electromagnet case 10. With such a configuration, the electromagnet case 10 is suspended in a substantially floating state by the pulling force of the suspension member 3 formed of a coil spring.
The phrase “suspended substantially in a floating state” refers to not only the case where the electromagnet case 10 is completely suspended from only the suspending member 3 but also the case where the suspending member 3 is used and FIGS. As shown in FIG. 2, the gap between the bottom base plate 7 and the bottom of the electromagnet case 10 includes a state in which an anti-vibration rubber 9 for preventing the electromagnet case from swaying is included. Suspension member 3 consisting of a coil spring
By suspending the electromagnet case 10 by using the above, the anti-vibration effect is significantly improved. Further, it is preferable to use the anti-vibration rubber 9 together with the above-mentioned anti-vibration rubber 9 so that a supplementary effect of the anti-vibration can be expected.

The setting of the tension of the coil spring constituting the suspending member 3 and the length of the coil spring may be appropriately set in the electromagnet case 10 according to the specifications. There is no particular limitation on the number of hanging members 3 to be used.

The hook-like shape of both ends 3a and 3b of the suspension member 3 is not particularly limited as long as it is a commonly used shape. In particular, the other end 3b engaged with the electromagnet case 10 is
Preferably, the shape is as shown in FIG. That is, as shown in FIG. 5, the suspending member 3 (composed of a coil spring) is engaged with the lower portion of the electromagnet case 10.
Of the coil spring main body 3 ′, which functions as a coil spring, projects in a direction (β) substantially perpendicular to the axial direction (α), and has a winding shape wound one or more turns. And particularly preferably, 1.1 to
It has a winding shape wound in a winding range of 2.0. By setting the other end 3b in such a form, the attachment to the electromagnet case 10 is easy, and even if the electromagnet case 10 is turned upside down by replacing the device by replacing a repair part of the device, the other end is formed. It has an excellent merit that the end 3b is hard to come off. While the winding range of 1.1 to 2.0, particularly 1.2 to 1.8, maintains such an effect,
Excellent operability such as mounting. In addition, it is not preferable to use a method such as caulking to prevent the other end 3b from coming off, because the number of steps is increased.

In addition to the anti-vibration effect using the hanging member 3, it is preferable to devise a method of connecting the L-shaped rubber hose 90, which is a connection hose for the discharge air. That is, as described above, the valve case lid 60 attached to the valve case main body 50 includes the hose connecting portion 61 protruding outside, and the upper port 91 of the L-shaped rubber hose 90 is inserted into the hose connecting portion 61. (FIGS. 3 and 4), the lower-portion vicinity 95 of the L-shaped rubber hose 90 is connected to the bottom base plate 7.
It is desirable to be configured so as to be inserted and fitted into the hole 7a (FIGS. 1 and 2). As shown in FIG. 2, the lower portion 95 of the L-shaped rubber hose 90 has two protruding flange portions 95a and 95b, and the concave portion between the flange portions 95a and 95b is provided with the bottom base plate 7 It is inserted and fitted so that the hole 7a is inserted. By adopting such a fitting method of the L-shaped rubber hose 90 and the hole 7a of the plate 7, and fixing the vicinity 95 of the lower opening of the L-shaped rubber hose 90, the free portion of the rubber hose 90 can be sufficiently long (the rubber hose 90). The free operating portion becomes longer), and the vibration of the electromagnet case 10 is less likely to be transmitted to the lower tank container 5,
The durability is improved.

[0037]

As described above, the housing-shaped electromagnet case used in the present invention is configured to be suspended in a substantially floating state by the suspension member composed of the coil spring. Vibration from the electromagnet case can be effectively attenuated, and an extremely high vibration isolation effect can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a state where an electromagnetic diaphragm pump of the present invention is disassembled into individual main parts.

FIG. 2 is a front view showing, in cross section, necessary parts of main parts of the electromagnetic diaphragm pump of the present invention.

FIG. 3 is a plan view showing a necessary portion of a main part of the electromagnetic diaphragm pump of the present invention in a cross section.

FIG. 4 is a perspective view showing a state where an electromagnet case used in the electromagnetic diaphragm pump of the present invention is suspended in a floating state.

FIG. 5 is a front view showing a preferred form of a suspension member composed of a coil spring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electromagnetic diaphragm pump 3 ... Suspension member 5 ... Lower tank container 7 ... Bottom base plate 8 ... Prop 10 ... Electromagnet case 11 ... Electromagnet main body 15 ... Electromagnet cover 17 ... Air intake 21, 25 ... Electromagnet 30 ... vibrator 40 ... diaphragm 50 ... valve case body 60 ... valve case lid 70 ... diaphragm electromagnet side center plate 80 ... diaphragm valve case side center plate 90 ... L-shaped rubber hose 100 ... outer case 105 ... air inlet 120 ... suction valve 130: discharge valve 150: intake chamber 160: diaphragm chamber 170: discharge chamber

Claims (7)

[Claims] An electromagnet case having a housing shape, a pair of electromagnets arranged to face each other in the electromagnet case, and interposed between opposing surfaces of the pair of electromagnets, with a change in polarity of the electromagnets, A vibrator reciprocating in a direction perpendicular to the opposing direction of the electromagnet; a pair of elastic diaphragms disposed so as to oppose both ends of the vibrator; a suction valve and a discharge valve separated by the diaphragm; An electromagnetic diaphragm pump having a valve case main body having a valve, wherein the housing-shaped electromagnet case is suspended in a substantially floating state by a suspension member formed of a coil spring. Type diaphragm pump. 2. A column for suspending an electromagnet case is erected on a bottom base plate, and one end of the suspension member is locked to the column, and the other end of the suspension member is connected to the electromagnet case. 2. The electromagnetic diaphragm pump according to claim 1, wherein the floating state of the electromagnet case is formed by locking. 3. A four poles are erected near four corners of a case-shaped electromagnet case, and one end of the suspending member is locked to each of the pillars, 3. The electromagnetic diaphragm pump according to claim 2, wherein the other end is locked to a lower portion of the electromagnet case to form a floating state of the electromagnet case. 4. The other end of a suspension member formed of a coil spring engaged with a lower portion of the electromagnet case projects substantially perpendicularly to an axial direction of a coil spring main body that functions as a coil spring. The electromagnetic diaphragm pump according to claim 2 or 3, wherein the electromagnetic diaphragm pump has a winding shape wound one or more turns. 5. The other end of the hanging member has a length of 1.1-2.
3. A winding shape wound in a winding range of 0.
Or the electromagnetic diaphragm pump according to claim 3. 6. The electromagnetic diaphragm according to claim 2, wherein an anti-vibration rubber for preventing the electromagnet case from oscillating is interposed in a gap between the bottom base plate and the electromagnet case bottom. pump. 7. A valve case cover is attached to the valve case main body, the valve case cover includes a hose connecting portion projecting to the outside, and the hose connecting portion has an upper port of an L-shaped rubber hose. The electromagnetic diaphragm pump according to any one of claims 1 to 6, wherein a lower end of the L-shaped rubber hose is inserted and fitted into a hole of the bottom base plate 7 while being inserted.