JP2563319Y2 - Electromagnetic drive metering pump - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention comprises a reciprocating member such as a plunger for reciprocating a variable volume member such as a diaphragm, and an electromagnetic coil for driving the reciprocating member, according to a set discharge amount. The present invention relates to an electromagnetically driven metering pump for performing a pumping operation.

[0002]

2. Description of the Related Art At present, pumps of this kind are used in various fields and are controlled by a stroke length of a reciprocating member and a pulse signal due to a difference in a pumped fluid and a difference in a discharge amount to be set. It is necessary to adjust the number of controls of the electromagnetic coil.For this reason, pump products are prepared for each specification determined according to the specifications such as the level of each application and function, the difference in the rated power supply of the export destination, the price, etc. ing. The difference between the main specifications of these pump products is the set discharge amount. In this setting, unitary control based on only adjustment of the stroke length or binary control combined with adjustment of the number of strokes is performed.

The adjustment of the stroke length is usually performed by moving and adjusting an adjustment stopper which abuts at the stroke end of the reciprocating member, and an adjusting part for this is installed corresponding to the rear end position of the stroke of the reciprocating member. Therefore, if the pump head is located at the front end, the pump head is provided at the rear end of the pump body.

On the other hand, the adjustment of the number of strokes is performed by electrical control of the number of pulses supplied to the electromagnetic coil, and a control unit for this purpose is built in the pump body. The operation unit for adjusting the number of strokes is arranged on an operation panel installed at the rear end of the pump main body together with the operation knob for adjusting the stroke length.

[0005]

In the conventional configuration, since a control unit for setting the discharge amount is fixedly provided for each product according to each specification, a predetermined range can be adjusted in a specific product specification. Can be performed individually, but it is not possible to cope with the case where adjustment beyond this range is required or other conditions such as the rated power supply are different, so a pump product with new specifications must be prepared separately. . Therefore, even if the configuration of the pump body does not need to be particularly changed, the product specifications are extremely diversified in order to correspond to individual conditions, and it is difficult to reduce the cost by mass production. It was efficient. Especially nowadays, diversification of applications and internationalization of destinations are further promoted, and it is necessary to commercialize products that can respond immediately to a wide range of conditions.However, conventional pump products have not taken countermeasures in this regard. .

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and has as its object to swiftly and widely respond to diversification of uses of pump products and internationalization of destinations, and to reduce costs by mass production. It is an object of the present invention to provide an electromagnetically driven metering pump capable of easily controlling the supply of a product.

[0007]

In order to achieve the above object, according to the present invention, a variable volume member such as a diaphragm is provided.
A reciprocating member for reciprocating the variable volume member with a set stroke length, and an electromagnetic coil for driving the reciprocating member with a set number of strokes, and a pump head provided at a front end of the pump body. With
A stroke length adjusting portion is provided at the rear end of the pump body , and the stroke length adjusting portion
Stroke length adjuster screwed for axial movement adjustment
Rotating operation to cause axial movement of the adjusting body
It is assumed that it consists of a possible stroke length adjustment knob and performs the pump feeding operation according to the set discharge amount.
To, Rutotomoni Pont electrically connected to the electromagnetic coil
Terminal connected to the top or side of the
Section and a stroke number adjusting section, and the terminal section
A first control unit detachably mounted and a power connection
Section and a stroke number adjusting section, and
Detachable to the terminal of the pump body corresponding to the top or side
The first part attached to the pump and the rear end of the pump body
Second part responsive and provided with a stroke length adjustment knob
And the first control unit is formed in a more L-shape.
Second control unit replaceably mounted on the pump body
And a second control unit in place of the first control unit.
When installing the pump, the switch attached to the pump body
The second control unit is replaced with a troke length adjusting knob.
Insert the upper stroke length adjustment knob into the rear end of the pump body.
It is an object of the present invention to propose an electromagnetically driven metering pump characterized by a structure comprising a replaceable mounting means and a configuration comprising:

[0008]

[0009]

According to the proposed structure of the present invention, various types of control units are prepared corresponding to various conditions, and these are mounted on terminals protruding from the upper surface or side portions of the pump body. , Pump products can be provided immediately according to individual specifications. As a result, the pump body itself can be used in common, and a significant cost reduction can be achieved by mass production of this part.

[0010] In particular, as the control unit, the number of strokes
In addition to the first control unit having an adjusting unit, the first control unit has a stroke length adjusting unit in addition to the stroke number adjusting unit .
2 is prepared, and when the unit is mounted on the pump body, the stroke length on the pump body is adjusted.
Stroke length with setting knob on second control unit
By changing and connecting to the adjustment knob , the stroke length can be adjusted collectively on the unit.
The first and second control units are connected to a common specification port.
By selecting and mounting it on the pump body,
Compatible with pump product specifications.

[0011]

1, reference numeral 10 denotes a pump main body of an electromagnetically driven metering pump according to an embodiment of the present invention, 10a denotes a pedestal of the pump main body, 12 denotes a terminal portion protruding from an upper surface thereof, and 14 denotes a terminal portion 12 thereof. Control unit that is replaceably mounted on the vehicle
1 shows an example of a control unit constituting the control unit. A pump head 16 is provided at a front end (right side in the figure) of the pump body 10, and a stroke length adjusting unit 18 is provided at a rear end (left side in the figure).

In the pump body 10, reference numeral 20 denotes an electromagnetic coil, reference numeral 22 denotes a plunger which reciprocates in the axial direction (left and right directions in the figure) of the pump body by excitation of the electromagnetic coil, and reference numeral 24 denotes a tip of the plunger. The diaphragm which is attached and constitutes the variable volume member, 26 is the plunger 2
A plunger core 30 fixed to the base end of the pump 2 and constituting a reciprocating member together with the plunger is molded from a synthetic resin of the pump body 10 so as to urge the reciprocating member toward one end (return end) of the stroke. A return spring composed of a disc spring inserted between the inserted frame 32 and the plunger core 26.

When the electromagnetic coil 20 is energized and excited, the plunger core 26 moves integrally with the plunger 22 from the illustrated return end along the axial direction, thereby deforming the diaphragm 24, thereby causing the pump 24 to deform. Head 16
A volume change of a variable volume chamber (pump chamber) (not shown) inside the pump head 16 is caused to occur in the pump head 16 as shown by an arrow.
The pump supply fluid, such as a chemical solution, flowing in from the
It is configured to discharge by a constant amount from b. The construction and operation of this pump is well known.

In the stroke length adjusting section 18, reference numeral 34 denotes a stroke length adjusting body which is screwed to the adjusting section frame 36 of the pump body 10 so as to be movable in the axial direction. By rotating the adjusting body 36 and adjusting the screwed position, the contact surface of the front end of the adjusting body 36 moves in the axial direction,
As a result, the position (return end) of the rear end face of the plunger core 26 that comes into contact with the contact surface of the adjustment body is changed, and the stroke length is adjusted.

Reference numeral 38 denotes a stroke length adjusting knob, which has a pointer 38a, and is fixed to the adjusting body 34 by a bolt 40 inserted in the axial direction and a nut member 42 screwed to the bolt 40 at the tip. . A fitting member 44 whose outer peripheral surface is tapered is fixed to the extension boss 38 a of the adjustment knob 38, and a through hole is formed to allow the bolt 40 to pass through the boss 38 a and the fitting member 44. When the fitting member 44 is fitted into the fitting hole 46 having a tapered inner peripheral surface formed in the adjusting body 34 correspondingly, a wedge action occurs between the tapered mutual fitting surfaces. The adjustment knob 38 is more firmly fixed to the adjustment body 34 when tightened and fixed by the bolt 40. Thus, by appropriately rotating the adjustment knob 38, the adjustment body 34 can rotate integrally with the adjustment knob 38 to perform the adjustment movement in the axial direction.
The amount of rotation of the adjustment knob 38 is the same as shown in FIG.
A scale is provided on the rear surface of the pump body, and a desired stroke length can be set by adjusting the pointer 38a to the scale. In the configuration of the adjustment unit 18, FIG.
When the other control unit is mounted, as shown by a chain line in FIG. 1, the adjusting knob 38 and the fitting member 44 of the stroke length adjusting portion 18 of the pump body 10 are removed together with the bolt 40. I have. On the other hand, the nut member 42 is left fixed to the adjustment body 34.

[0016] As described above, the stroke length adjusting section 18 of the pump body 10, the components including the adjustment knob 38, according to the specifications of the control units mounted, the attachment means configured
The bolt 40 and the nut member 42 are configured to be partially removable.

As shown in FIGS. 1 and 2, the control unit 14 includes a fitting recess 50 fitted on a rectangular mounting base 48 formed integrally with the frame 32 on the upper surface of the pump body 10.
At the bottom, mounting bolts 52 forming fixing means are passed through the bolt insertion holes 54 in a state of being mounted on and fitted to the mounting table 48 as shown by a chain line, and the bolt holes 5 formed in the mounting table 48 are formed.
6 and screw-fastened to fix the pump body 10
Attached to.

As can be seen particularly in FIG.
When the control unit 14 is mounted on the pump body 10, the tabs 58 and 60 are provided on the control unit 14. The electrical connection is made by being inserted into each socket part that does not. Also, FIG.
The stroke number adjusting knob 62 which constitutes the stroke number adjusting unit is provided at the corner of the control unit 14 as shown by. The electromagnetic coil 20 in the pump body 10 is rotated by operating the knob 62 appropriately in the energized state. The frequency of the pulse supplied via the coil tab 58 changes, thereby adjusting the number of strokes.

The control unit 14 is further provided with a power supply connection 64 at the rear end thereof, to which an external power supply (not shown) is connected. The energization of the coil and the energization of other control parts are performed.

[0020] Next, FIGS. 3 and 4, the second control
A mode in which the control unit 70 constituting the unit is mounted on the pump main body 10 shown in FIG. 1 by replacing it with the first control unit 14 will be described. Therefore, except for the control unit 70, the pump main body 10 is as shown in FIG. 1, and therefore, the same reference numerals are given and the description of the configuration is omitted.

The control unit 70 differs from the control unit 14 described above in that it is formed in an L-shape as a whole, and is mounted so as to cover the upper and rear ends of the pump body 10 as shown by solid lines in the drawing. . The upper part 70 of the unit 70
As with the control unit 14, a is provided with a structure for being exchangeably mounted on the terminal portion 12 of the pump body 10. That is, each of the sockets (not shown) corresponding to each of the tabs 58 and 60 of the terminal portion 12 is formed with a fitting recess 72 fitted into the mounting base 48 and a bolt insertion hole 76 through which the mounting bolt 74 is inserted. Is also provided.

The rear part 70b of the control unit 70 is provided with a stroke length adjusting part 78, a power supply connecting part 80 and a mounting part 82 for attaching to the pump body 10. Since the control unit 70 is large in size, the mounting portion 82 further secures the mounting stability, and the mounting bolt 84 is screwed into a bolt mounting hole 86 formed in the pump body 10 in advance.

The control unit 70 is mounted on the unit 7
Before the mounting of No. 0, the adjusting knob 38 is indicated by a chain line in FIG.
Is carried out after previously removing the portion including. Instead, the stroke length adjusting section 78 on the control unit 70 is connected to the remaining adjusting section 18 of the pump body 10. The adjusting unit 78 on the control unit 70 includes an adjusting knob 88,
A long boss 90 integrally formed with the boss 90;
Fitting member 92, and collected in a fixed tapered to the ends
It is composed of a long mounting bolt 94 that constitutes the attaching means . After fixing the control unit 70 on the pump main body 10 with the mounting bolts 74 and 84, the bolt 94 is connected to the boss 90.
The adjusting portion 78 is attached as shown by a solid line in FIG. 3 by being inserted into a shaft hole formed in the fitting member 92 and screwed into the nut member 42 in the pump body 10, and shown in FIG. Similarly to the adjustment unit 18, the stroke length is adjusted by rotating the adjustment knob 88. FIG. 4 shows the adjustment knob 88, its pointer 88a and the scale 96.
As shown in (5), the stroke length to be set can be obtained by adjusting the pointer 88a of the adjustment knob 88 to the scale 96 indicating the stroke length in percentage.

The stroke number adjusting section 98 on the control unit 70 is constituted by a touch switch on the upper portion 70a of the unit 70, and the number of strokes to be set on the display 100 is displayed by pressing the switch. . In any case, the adjustment of the number of strokes is transmitted to the electromagnetic coil 20 via the terminal section 12 by an operation on the unit 70, similarly to the control unit 14 described above. In this control unit 70, both the stroke length and the number of strokes can be adjusted.
The power supply unit 80 also has more power cord outlets than the control unit 14, and receives an external control signal via the power supply unit 80 in addition to the power supply and stroke adjustment operation. Then, the configuration can be appropriately set by a touch switch and a display, so that it is possible to cope with the specifications of a higher-performance pump product.

When removing the control unit 70 from the pump body 10, it can be easily removed by extracting the bolts 74, 84 and the mounting bolt 94 of the adjusting portion 78.
If another control unit 14 is to be mounted instead, the adjustment knob 38 or the like of the pump body 10 may be mounted again.

In the embodiment, the terminal portion 12 is provided so as to protrude from the upper surface of the pump main body 10.
The structure provided in the side part of is also possible. The rear end of the pump body has a stroke length adjusting knob or the like, so that there is no room for the space. In this case, the high-function control unit 70 may have an L-shaped configuration that covers the side and rear ends of the pump body.

[0027]

As described above, according to the present invention, according to the present invention, various types of first and second control units are prepared in accordance with various conditions, and the first and second control units are protruded from the upper surface or side portions of the pump body. And the second control unit.
The stroke length adjustment knob of the stroke length adjustment section.
By exchanging the pumps, we can immediately provide pump products that support a wider range of product specifications, and by using a common pump body, we can achieve mass production effects and drastically reduce costs, as well as efficiently manage product supply. Do it again ,
Various practical effects are obtained, such as obtaining a compact pump shape .

[Brief description of the drawings]

FIG. 1 is a fragmentary front view showing an embodiment of an electromagnetically driven metering pump according to the present invention together with a control unit having one specification.

FIG. 2 is an enlarged perspective view of a control unit and a terminal unit shown in FIG.

FIG. 3 is a fragmentary front view of the main part of the electromagnetically driven metering pump of the present invention shown together with a control unit of another specification.

FIG. 4 is a rear end view of the control unit shown in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pump main body 12 Terminal part 14 Control unit 18 Stroke length adjustment part 20 Electromagnetic coil 62 Stroke number adjustment knob 64 Power supply connection part 70 Control unit 78 Stroke length adjustment part 80 Power supply connection part

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akira Ogasawara 554 Fujikubo, Miyoshi-cho, Iruma-gun, Saitama Pref.

Claims (1)

(57) [Scope of request for utility model registration] 1. A variable volume member (24) such as a diaphragm.
And a reciprocating member (22, 26) for reciprocating the variable volume member with a set stroke length, and an electromagnetic coil ( 20 ) for driving the reciprocating member with a set stroke number. A pump head (16) is provided at a front end of the main body (10) , and the pump main body is provided.
A stroke length adjusting section (18) is provided at the rear end of the pump body.
Stroke length adjuster (3)
4) and rotation to cause axial movement of the adjustment body
Operable stroke length adjustment knob (38)
Ri, in performing electromagnetically driven metering pumps pump feeding operation in accordance with the ejection amount set, the electrically connected to the electromagnetic coil Rutotomoni pump body
The terminal (12) protruding from the top or side surface of the power supply , the power supply connection (64) and the stroke number adjustment (62)
A first terminal that is provided and detachably attached to the terminal portion.
The control unit (14), the power supply connection part (80) and the stroke number adjustment part (98)
And the pump corresponding to the top or side of the pump body.
First detachably attached to the terminal portion (12) of the pump body.
(70a) and the rear end of the pump body
Second part both having a stroke length adjusting knob (88)
(70b) and the first control
Attached to the pump body so that it can be replaced with the unit (14)
A second control unit (70) and a second control unit instead of the first control unit (14).
Attach to the pump body when attaching knit (70)
Replace with the stroke length adjustment knob (38)
The stroke length adjusting knob (8) on the second control unit
8) A hand to replaceably attach to the rear end of the pump body
An electromagnetically driven metering pump comprising: stages (40, 42, 94) .