KR0155478B1 - Solenoidal pump - Google Patents

Abstract

The purpose is to prevent the suction joint from being easily detached from the pump body and to prevent inconvenience caused by cutting powder.

The suction joint part 60 having the suction port 22 has a groove for engaging the outer circumference of the tool engagement angle surface 62 with the tool engagement angle surface 62 on one side and the insertion portion 63 formed on the other side ( 64) is formed. The suction joint part 60 is inserted into the insertion hole 76 of the pump main body 17 so that the suction joint 60 is engaged with the engaging groove 64 in which the notch 71 of the mounting plate 70 is engaged. 17) is attached by fixing the attachment plate 70.

Description

Electronic pump

1 is a front view showing an embodiment of the present invention.

2 is a plan view showing an embodiment of the present invention.

3 is a longitudinal sectional view showing an embodiment of the present invention.

4 is a cross-sectional view showing an embodiment of the present invention.

5 is an exploded perspective view of the main part of the present invention.

* Explanation of symbols for main parts of the drawings

1: Electronic pump 2: Electronic coil

7: case 9: electronic plunger

14 piston 16 cylinder

17: pump body 21: suction valve

22: inlet port 23: discharge valve

37: discharge port 47: pressure regulator

56: pressure screw 57: pressure plate

70: attachment plate 71: notch

72: through hole 76: attachment hole

[Industrial use]

The present invention relates to an electronic pump using a solenoid (electromagnetic coil) for pressurizing kerosene and the like.

The electromagnetic pump is an intermittent current applied to the electromagnetic coil, and the plunger and the piston reciprocate to perform a pumping action by means of a sinusoidal operation with the discharge valve of the intake valve. For example, Japanese Patent Application Laid-Open No. 59-7787 is mentioned. In this example, the intake valve and the discharge valve are integrated, inserted into a hole formed in the block body pump body, and the lid is fitted at the end. The lid is also fitted to the pressure rise time adjusting device, and the accumulator is also attached to the main body by screwing.

In this way, since the electronic pumps were separately attached to each other, their attachment was also screwed with respect to the pump main body.

The need to separately process or attach each of these mechanical parts was increasing manufacturing costs. Moreover, the problem which the secondary cutting powder which generate | occur | produces at the time of screwing outflows in the flow path of a fluid also occurred.

For this reason, this application proposed the invention shown by Unexamined-Japanese-Patent No. 5-37023. In other words, in the electronic pump assembled by forming at least a part of the fluid passage from the suction port to the discharge port in the block-shaped pump body, the functional parts installed in the fluid passage are inserted into the holes formed in the pump body. It is an electronic pump which presses the opening side of the hole formed in the electric pump main body which one functional component is accommodated with one board, and attaches it to the main body electric-powered by the pressure buffer accumulator as one board.

[Problems to Solve Invention]

However, also in the invention of the prior art, the suction joint part in which the suction port is provided is attached to the pump main body by screwing. As a result, defects in which cutting powder flows out into the fluid have been generated until now. In addition, in the case of preservation or the like, when removing the pipe connected to the suction joint part, the suction joint part is often removed from the pump body, and in this case, there is no suction joint part in the electronic pump at the time of rejoining, so that the coupling of the pipe is prevented. In some cases this was not possible, and at this time, the applicant company had to bring the suction joint.

For this reason, an object of the present invention is to provide an electronic pump in which the suction joint is not easily separated from the pump body, and the countermeasure against cutting powder is also implemented.

[Means for solving the problem]

The electronic pump of the present invention is an electronic pump formed by sucking the fluid in the suction port and pressurizing it to discharge the fluid from the discharge port, wherein the suction joint part provided with the suction port is provided with an insertion part at each side for tool engagement on one side. At the same time, a groove is formed on the outer periphery of each side of the tool engagement, which is inserted into the mounting hole formed in the pump body, and at the same time, the notched groove formed by the notch formed on the attachment plate attached to the pump body. To be fixed in place.

The suction joint part is inserted into an attachment hole formed in the pump main body through the insertion portion of the suction ring.

The attachment hole consists of a square hole and a cylindrical hole.

In addition, a screw through hole is formed in the mounting plate, and the mounting plate is attached by screwing the screw into the screw hole of the pump body.

Again, the pressure adjusting bolt of the pressure adjusting means may protrude from the through hole formed in the attachment plate.

[Action]

Therefore, the suction joint part provided with the suction port is inserted into the pump main body, and the suction joint part is attached to the pump main body by engaging the notch of the mounting plate with the engaging groove formed on the outer periphery of each surface for tool engagement. . As a result, the suction joint cannot be easily removed unless the attachment plate is removed.

The suction joint is attached to the pump main body by inserting it into an attachment hole formed in the pump main body through a zero ring at the insertion part.

A specific example of the attachment of the suction joint is that an insert is inserted into a cylindrical hole of an attachment hole and a part of each surface for tool engagement is engaged with each hole.

The attachment of the attachment plate to the pump body is made by screwing into the screw holes formed in the pump body at the screw through holes of the attachment plate by screws.

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described based on drawing. 1 to 5, first, the electronic pump 1 will be described. The electronic pump 1 is provided with an electromagnetic coil 2 through which an intermittent current (pulse current) flows. 2) is wound around the resin bobbin (3). Then, the guide pipe 5 of the nonmagnetic material is metallic as the metal via the upper magnetic pole barrel 4a and the lower magnetic pole barrel 4b of the pair of magnetic bodies having a space separated from the nonmagnetic material in the middle of the electromagnetic coil 2. Is installed in the vertical direction. The guide pipe (5) has a pump body (17) in which the outside of one end is in contact with the electric pole (4a) which is electrically connected to the inside of the guide rod (25), and the outside of the other end is fitted. Is installed in contact with

In addition, the upper and lower pole barrels 4a and 4b are provided with the upper plate 6a and the lower plate 6b of the magnetic body extending along the upper and lower portions of the bobbin 3, which are arranged to form a magnetic circuit, respectively. The case 7 of the magnetic material is covered on the outermost side of 2).

The electromagnetic plunger 9 is a cylindrical body of magnetic material, which is supported in the electromagnetic plunger operating chamber 11 configured as the upper spring 10a and the lower spring 10b and configured as the guide pipe 5 and under the no excitation of the electromagnetic coil 2. The lower end of the electromagnetic plunger 9 is disposed so as to maintain an appropriate distance d between the upper end of the defective pole cylinder 4b. The seal 11 is separated into an upper spring chamber 11a and a lower spring chamber 11b as an electromagnetic plunger. A longitudinal hole 13 is drilled in the electromagnetic plunger 9 in the axial direction and communicates with the upper spring chamber 11a and the lower spring chamber 11b. In addition, the piston 14 described below is fixed to the lower portion of the electromagnetic plunger 7.

As described above, the piston 14 is fixed to the electromagnetic plunger 9 and inserted into the cylinder 16 so as to reciprocate with the reciprocating operation of the electromagnetic plunger 9. In addition, the cylinder 16 is supported by the pump body 17 via the 0 ring 18. In addition, the cylinder 16 supports the lower end of the lower spring 10b mentioned above.

In the pump chamber 20, when the tip of the piston 14 is formed on one side and the pressure change in the chamber 20 occurs as a reciprocating operation of the piston, and the negative pressure becomes negative, the pump valve 20 opens the intake valve 21 to provide fluid at the inlet 22. When the pressure is reversed and the positive pressure is reversed, the discharge valve 23 is opened and discharged into the plunger operating chamber 11.

The guide rod 25 is attached to the upper end of the guide pipe 5 through the zero ring 19 at the upper end thereof, and has a large diameter part 25a and a small diameter part 25b therein. Is formed, the rod portion of the control valve rod 26 described below is disposed in the small diameter portion 25b, and the spring bearing 26b is accommodated in the large diameter portion 25a.

The control valve rod 26 is formed as a rod portion 26a and a spring bearing 26b, and a groove 35 for fluid passage is formed in the rod portion in the longitudinal direction, and the shutoff valve 27 is provided in the spring bearing 26b. ) Is attached. Moreover, the spring 32 which presses the control valve rod 26 toward an electromagnetic plunger is arrange | positioned between the spring support 26b and the discharge joint part 31 mentioned below.

The shut-off valve 27 is constituted as a valve body 29 to which the force of the valve cylinder 28 attached to the electrical spring support 26b and the spring 30 which presses in the opposite direction to the guide rod arrange | positioned inside is applied. .

The discharge joint part 31 is fitted to the outside through the zero ring 36 to the guide rod 25, and closes the large diameter portion 25a of the guide rod 25. And the discharge port 37 protrudes from the large diameter portion 25a. The distal end of the discharge port 37 serves as a valve seat 38.

The pressure adjusting device 47 is installed in the flow passage 52 from the discharge valve 23 to the lower spring chamber 11b, and the valve 48 is disposed in the flow passage 52, and the valve 48 and By using the discharge pressure as the aperture hole 49, the flow path area is suitably reduced, and the predetermined pressure is controlled at the flow rate of the flowing fluid. Specifically, the valve 48 is seated on the valve seat 51 as the spring 50. Pressure in the direction opposite to the extension of the spring 50 by the rod 52 attached to the hydraulic plunger 52 described below, and the pressure pressure is balanced from the plunger 50 and the rod 52. This valve 48 is maintained in the position to be.

The hydraulic pressure plunger 53 is freely disposed in the bore 54, receives discharge pressure at the front side, and exerts a force at the pressure adjustment spring 55 at the rear side, where the position of the hydraulic plunger 53 is located. Is transmitted to the valve 48 which is electrically communicated via the rod 52. The pressure adjustment spring 55 is adjusted as a pressure adjustment screw 56, and the adjustment bolt 56 is screwed into the adjustment plate 57 fixed to the pump main body 17. By contacting and rotating the adjustment bolt 56, the set force of the adjustment spring 55 can be adjusted and can be adjusted to a predetermined pressure.

Next, an example of use of the electromagnetic pump 1 described above will be described. When the intermittent current (pulse current), which is half-wave rectified commercial current, is passed through the electromagnetic coil 2, a magnetic force is generated in the electromagnetic coil 2 when the current (pulse) is applied, and the case 7, the bottom plate 6b, and the box pole tube (4a), the magnetic circuit by the electromagnetic plunger 9, the faulty pole cylinder 4b, and the upper plate 6a is comprised, and the electromagnetic plunger 9 is suction-displaced downward as shown in FIG. The displacement amount is the amount by which the distance d of the lower end of the electron plunger 9 and the upper end of the defect pole cylinder 4b is raised.

Due to the displacement of the electronic plunger 9 downward, the lower spring 10a is compressed and the repulsive energy is accumulated in the lower spring 10b. At the same time, the piston 14 is also displaced to pressurize the suction fluid and open the discharge valve 23, and the shutoff valve 27 is also opened as described below.

That is, at the time of energization, the control valve rod 26 is displaced downward by the spring 32 to the stopper 39 with the downward movement of the piston 14. As a result, the valve cylinder 28 is also displaced. For this reason, the valve body 29 is displaced downward while engaging the upper end inner side of the valve cylinder 28, and is forcibly separated from the valve seat 38 of the discharge port 37. As shown in FIG. Therefore, the pressurized fluid is discharged from the discharge port 37.

At the time of cutting the current (pulse), when the magnetic force of the electromagnetic coil 2 is attenuated and dissipated, the electromagnetic plunger 9 is moved upward as a repulsive force of the lower spring 10b. In connection with this, it moves to the upper side of the piston 14, and sucks fluid in the inlet port 22. As shown in FIG. By repeating this operation, for example, 50 times per second, the piston 14 also reciprocates at the same time, so that the pump is operated by the suction valve 21 and the discharge valve 23 to suck the fluid from the suction port 22. It discharges from the discharge port 37.

When the current (pulse) is attenuated, the lower spring 10b is displaced upward, but the electromagnetic coil 2 is again excited before returning to the original position completely by resistance due to a fluid filled in the electromagnetic plunger operating chamber 11 or the like. The displacement force is applied downwardly with respect to the electromagnetic plunger 9, and the operation of the electronic plunger 9 operates while keeping its movement center considerably moved to the lower side (the piston side) of the electromagnetic coil 2. The upper end of the piston 14 maintains a gap so as not to contact the lower end of the control valve rod 26. Therefore, since the position does not change and is held at the position pushed by the stopper 39 by the spring 28, the vibration of the shutoff valve 27 does not occur and there is no noise.

Next, when the energization of the electromagnetic plunger 9 is stopped, the electromagnetic coil 2 is not intermittently excited so that the electromagnetic plunger 9 is supported as the upper and lower springs 10a and 4b and returns to the discharge port. As a result, the piston 14 abuts against the lower end of the control valve rod 26 at the top thereof and resists and pushes against the spring 32. The lower spring 10b is stronger than the spring 32, and the valve cylinder 28 returns to the position shown in FIG. 2 toward the discharge port. As a result, the valve body 29 of the shutoff valve 27 seats on the valve seat 38 and closes. Thus, the discharge of the discharge fluid is stopped.

Next, the part concerning this invention is demonstrated, The suction joint part 60 is a cylindrical shape which has the suction port 22 which penetrates, and is screwed in the large diameter part of the one side. As the outer circumference of the suction joint part 60, a tool engaging angle surface (hexagonal surface) 62 is formed on one side thereof, and the tool engagement angle surface 62 is formed with a ruled edge 64 on the outer circumference. It is.

The other side of the suction joint part 60 is a cylindrical insert 63 inserted into the attachment hole 76 formed in the pump body 17 to be described later, and is formed in the insert 63. The 0 ring 66 is attached to the annular 0 ring groove 65.

Attachment plate 70 is to prevent the falling down by pressing the suction suction fitting 60, the notch 71 of the lower opening engaging the groove 64 formed in the suction suction fitting 60 is said. At the same time, the through hole 72 protrudes from the head of the pressure adjusting screw 56 which is formed. In addition, two screw through holes 73 for attaching the attachment plate (to the pump main body 17) are provided, and the screw 74 is formed in the pump main body 17 via the screw through hole 73. This attachment plate 70 is attached by screwing into the screw hole 75.

The attachment hole 76 is formed in the pump main body 17 and is used for inserting the suction joint part 60 described above. The attachment hole 76 is a square hole 76a and an inner cylinder hole 76b. Therefore, the insertion part 63 of the suction joint part 60 is respectively inserted into the surface hole 76a by the part of each surface 62 for tool engagement with the cylindrical hole 76b of the attachment hole 76. As shown in FIG. The angular surface 76a and the angular surface 62 for tool engagement are engaged to prevent rotation.

Next, attachment of the suction joint part 60 to the pump main body 17 first inserts the notch 71 of the attachment plate 70 into the groove 64 of the abutment joint part 60. Thus, the insertion portion 63 of the suction joint part 60 is inserted into the cylindrical hole 76b of the attachment hole 76. Then, a part of the tool engagement angle surface 62 is inserted into the angle hole 76a to be engaged. Next, the head of the combination rod 52 is inserted into the through hole 72 of the attachment plate 76. When this is completed, the screw 74 is screwed into the screw hole 75 of the pump body 17 via the screw through hole 73. As a result, the attachment plate 70 is fixed to the pump body 17. For this reason, the suction joint part 60 is in engagement with the attachment plate 70, and cannot be removed from the outside and cannot be turned unless the attachment plate 70 is removed. In addition, the pressure adjusting rod 52 is appropriately pressure-fixed and then the fixing nut 59 is attached.

Although not directly related to the present invention, the suction valve 21 and the discharge valve 23 described above are composed of the suction and discharge valve units 80 integrated as the valve seats 23a and 21a and the lid 24, and the pump body. The valve 48 inserted and attached to the hole 81 formed in the 17 is also integrated with the valve seat 51 and the lid 46, and is provided as a pressure regulator valve unit 82 housed therein. It is inserted into and attached to a hole 83 formed in the pump body 17.

These, the suction / discharge unit 80 and the pressure regulator valve unit 82 are both pressed by a press plate 84 fixed to the pump body 17 as a screw 88. This press plate 84 is pressed together with the accumulator 85, and is attached. Reference numeral 86 designates an exhaust valve and 87 designates an exhaust hole.

[Effects of the Invention]

As described above, according to the present invention, the suction joint is provided with a suction port so that the suction joint is inserted into the pump body and the notch of the mounting plate is inserted into the grooves formed on the outer circumference of each side of the tool engagement in the drawing. It is attached to the body. As a result, the suction joint can not be easily removed unless the attachment plate is removed.

In addition, since the pump main body attached to the suction joint is attached to the insertion hole formed in the pump main body by attaching the 0 ring to the insertion part, the cutting powder is not leaked into the flow path because it is not screwed.

Again, a part of the tool engagement surface of the suction joint is inserted into the surface hole formed in the pump body to prevent rotational operation from the outside.

Claims (4)

In an electronic pump in which a fluid is sucked from a suction port and pressurized to discharge a fluid from a discharge port, the suction joint part provided with the suction port is provided with a tool engaging portion on one side and an inserting portion on the other. A groove is formed on the outer periphery of the molten face, and the groove inserted into the groove is formed in the mounting plate attached to the pump body while inserting the inserted insert into the mounting hole formed in the pump body. Electronic pump characterized in that the interlocked to be fixed. 2. The electromagnetic pump according to claim 1, wherein the suction joint is inserted into an attachment hole formed in the pump body via an zero ring. The electron pump according to claim 1, wherein the attachment hole is formed by a square hole and a cylindrical hole. 2. The former according to claim 1, wherein the attachment plate is formed with a threaded through hole, and the screw is inserted into the threaded through hole and screwed into the screw hole of the pump body to attach the attachment plate. Pump.