KR200446440Y1 - The solenoid pump where becomes the secret maintenance - Google Patents

Abstract

This design not only ensures complete confidentiality from the production stage, but also ensures continuous confidentiality in the long-term use of the product, thereby preventing leakage defects from the production stage, increasing product life and product reliability. It relates to an airtight solenoid pump designed to greatly improve the pressure. When the power is applied to the induction coil 13 wound on the bobbin 12 installed outside the core 10, the pressurized check valve 14 is opened. The magnetic magnetic plunger 15 is reciprocated in the longitudinal direction between the elastic members 16 and 16 'installed at both sides of the core inner hole 11 so that the fluid introduced through the inlet nozzle member 30 flows back into the non-return valve 17. ) Is discharged through the built-in discharge nozzle member 20; The rear end of the discharge nozzle member 20 is formed to be integrally formed with a long tail extension tube part 21 penetrating in close contact with the inner surface of the core inner hole 11 into the tube hole 21a of the tail extension tube part 21. A magnetic plunger 15 having a shank valve 14 is installed to reciprocate between both side elastic members 16 and 16 'to be reciprocated; The core 10 is coupled to penetrate through the core through holes 41 and 41 'to form a U-shaped metal frame 40 having both standing pieces 42 and 42' supporting both sides of the core 10. Including; One side surface of the inlet nozzle member 30 is provided with a long pipe fitting groove 31 so that the end portion 21b of the trailing tube 21 is forcibly fitted; A close contact portion of the body portion 50 between the two rising pieces 42, 42 'of the metal frame 40 and the discharge nozzle member 20 in close contact with the two rising pieces 42, 42', respectively. Insert injection molding so that the close contact portion 32 of the inlet nozzle member 30 and the inlet nozzle member 30 is completely concealed so that the entire outer portion of the body 50 is covered with the plastic molding member 51, and the close contact portion ( 22 and 32 are configured to be covered and molded to be concealed by the fixed protrusion wheel parts 52 and 52 'which protrude integrally with the plastic molding member 51, respectively.

Solenoid Pump, Fuel Injection Pump, Fluid Injection Pump

Description

The solenoid pump where becomes the secret maintenance}

The present invention relates to a solenoid pump, and more particularly, to a solenoid pump which is improved hermeticity so that semi-permanent airtightness can be maintained at the nozzle part, thereby improving product reliability and quality uniformity.

Document 1 KR 10-2000-0073549 A 2000.12.05 Drawing 1

Document 2 KR 10-2005-0001592 A 2005.01.07 Drawing 1

In general, the solenoid pump generates a magnetic force in the induction coil when electric power is applied to the induction coil, so that the fluid is discharged in one direction as the moving check valve having the magnetic body reciprocates. Such a solenoid pump can be miniaturized. Therefore, it is widely used as a fuel injection pump and a fluid injection pump of a steam cleaner.

These solenoid pumps have a lot of vibration because the moving check valve is a high-speed reciprocating movement at a very high speed, and thus often lacks airtightness in long-term use.

In particular, there are many cases in which water leakage occurs due to lack of airtightness at a portion where the inflow nozzle and the discharge nozzle for injecting and discharging the fluid into the solenoid pump are combined with the main body.

In the prior art, the solenoid pump disclosed in Korean Patent Laid-Open Publication No. 10-2000-0073549 and Korean Patent Application Laid-Open Publication No. 10-2005-0001592 has an inlet nozzle and a discharge nozzle, respectively, and these nozzles are provided with a main body. It has a structure that is in close contact with the inlet, the inlet nozzle and the discharge nozzle is coupled to the main body and ultrasonic welding or by screwing.

However, in the case of ultrasonic welding, when there is a poor welding due to inadvertent welding, there is no problem in the initial use of the solenoid pump, but there is a lot of vibration in the use, so there is a problem that later leaks in the poor welding.

In addition, since nozzle bonding by ultrasonic welding is to be instantaneously fused, the welded portion may be unevenly welded, and thus quality uniformity cannot be secured, resulting in deterioration of product reliability and leakage of long-term use. have.

In case of screwing nozzles together, screw loosening phenomenon inevitably occurs due to pump vibration, which is inevitable. Therefore, there is a problem of not maintaining airtightness and leakage, and the manufacturing process is complicated and quality uniformity. There is a problem that is difficult to secure.

This design not only ensures complete confidentiality from the production stage, but also ensures continuous confidentiality over the long term in the use of the product, thereby preventing leakage defects from the production stage and increasing product life and product reliability. The aim is to make a great improvement.

Another object of the present invention is to ensure the uniformity of the quality while ensuring the confidentiality of the product at the product production stage, and another object is to improve the productivity by simplifying the work process have.

The present invention for achieving the above object, the magnetic plunger having a check valve for pressurization when the power is applied to the induction coil wound on the bobbin installed outside the core in the longitudinal direction between the core member installed on both sides of the core hole. The fluid reciprocated and introduced through the inlet nozzle member is discharged through the discharge nozzle member in which the non-return valve is incorporated; The rear end of the discharge nozzle member is formed so that a long tail extension tube part which penetrates in close contact with the inner surface of the core hole is integrally formed, and a magnetic plunger having a check valve for pressurizing between the elastic members inserted into the tube hole of the tail extension tube is capable of reciprocating. To be installed so that The core is coupled to penetrate the core through hole and includes a metal frame having a U-shape having both standing pieces supporting both sides of the core; One side of the inlet nozzle member is provided with a long pipe fitting groove so that the end of the trailing extension pipe portion is coupled to be forced fit; The whole body part between the two rising parts of the metal frame, and the close contact part of the discharge nozzle member and the close contact part of the inlet nozzle member, which are in close contact with each of the standing part parts, respectively, are completely inserted into the insert. The plastic molding member to be covered, characterized in that configured to be covered with each other by the fixed protrusion wheel portion protruding integrally with the plastic molding member on the outside of the close contact protrusion.

The bottom of the contact protrusion part of the discharge nozzle member and the inlet nozzle member is characterized in that the respective O-rings are inserted into the core and the metal frame in close contact.

Each of the two standing pieces of the metal frame is formed with a plurality of molding holes, respectively, characterized in that the plastic molding member is filled.

This design not only ensures that the fluid is leaked to the outside from the production stage, but also maintains airtightness semi-permanently even when using the product, so that leakage defects can be prevented from the production stage. There is an effect to greatly improve the reliability.

In addition, the present invention can be produced to eliminate the cumbersome work processes such as screw assembly or fusion bonding, so that the productivity can be improved by simplifying the process, and the quality can be produced uniformly in mass production, so that the quality is uniform. It has the effect of improving the quality due to the effect of securing the properties, and it is a useful design to improve the competitiveness both internally and externally, as well as the effect of further improving the product reliability.

When the present invention is described in more detail based on the accompanying preferred embodiments as follows.

1 and 2 show a solenoid pump in which the present invention is implemented.

1 and 2, the present invention provides a core 10, an induction coil 13 wound around a bobbin 12 installed outside the core 10, and power is applied to the induction coil 13. And a magnetic plunger 15 having a pressurized check valve 14 reciprocating in the longitudinal direction between the elastic members 16 and 16 'installed at both sides, and a non-return valve for allowing fluid to be discharged only in one direction ( And a discharge nozzle member 20 having a built-in 17 and an inlet nozzle member 30 into which fluid is introduced.

Therefore, since the present invention is designed to ensure the airtightness for the leakage prevention in the solenoid pump, detailed drawings and descriptions related to the operation, power supply, and wiring of a conventional solenoid pump are omitted, and only the structure and description for securing the airtightness will be omitted. Shall be.

Therefore, the present invention allows the long tail extension tube part 21 to penetrate closely to the inner circumferential surface of the core inner hole 11 at the rear of the discharge nozzle member 20 to be integrally formed.

Since the discharge nozzle member 20 is injection-molded in resin, it is possible to mass-produce in the state having the trailing tube 21.

Then, the magnetic plunger 15 having the respective elastic members 16 and 16 'and the pressure check valve 14 is inserted into the tube holes 21a of the rear extension tube part 21 so that both elastic members 16 are inserted. 16 '), the magnetic plunger 15 having the pressurized check valve 14 is installed to reciprocate. Reference numeral 18 denotes a valve retaining ring for fixing the check valve 14 and the non-return valve 17, respectively.

The pressurized check valve 14 and the non-return valve 17 are separated when the pointed part is separated so that the fluid passes through the pointed part so that the fluid passes through the pointed part. As a result, the fluid cannot be flowed back, so that the fluid can only pass in one direction and never flow back.

Therefore, when the magnetic plunger 15 moves toward the discharge nozzle member 20, the pressurized check valve 14 pressurizes the fluid to be discharged through the non-return valve 17, and the magnetic plunger 15 is introduced into the nozzle. When moving toward the member 30, the fluid passes through the pointed portion of the pressurized check valve 14, and the fluid moves to the front thereof to be filled.

At this time, the non-return valve 17 is a state in which the pointed portion is closed, so that the fluid discharged once is not sucked again. By repeating the above operation at a very high speed, the solenoid pump discharges the fluid in only one direction. It will continue to work.

On the other hand, the present invention is provided with a metal frame 40 of the U-shape.

As shown in FIGS. 3A and 3B, the U-shaped metal frame 40 has standing pieces 42 and 42 'on both sides thereof, and the standing pieces 42 and 42' are respectively provided. The core through holes 41 and 41 'are provided, and the lower part is provided with several molding holes 43, respectively.

In addition, the electric wire 19 penetrates into the bottom part, and is spot-welded and fixed by the inner surface.

Referring back to FIG. 1, the present invention provides a non-return valve 17, a valve fixing ring 18, an elastic member 16, and a pressurized check valve 14 and a valve fixing ring in the discharge nozzle member 20 ( 18 is assembled to the assembled magnetic plunger 15 and the elastic member (16 ').

Then, the O-ring 53 is inserted into the rear extension tube portion 21 of the discharge nozzle member 20 so that the O-ring 53 is in close contact with the contact protrusion 22, and then the outer peripheral surface of the rear extension tube portion 21. The core 10 is assembled to fit.

Next, the core 10 coupled to the rear extension tube portion 21 by the metal frame 40 core through holes 41 and 41 'with the bobbin 12 sandwiched between the two standing pieces 42 and 42'. Assemble through. Of course, the core 10 is assembled through the center of the bobbin 12.

Then, the O-ring 53 'is inserted into the rear extension tube part 21 so that the O-ring 53' is closely attached to the close contact part 32 of the inflow nozzle member 30, the core 10 and the metal frame 40 later. Make contact.

However, the O-rings 53 and 53 'may be removed and assembled in some cases. The reason for this is that the present invention does not necessarily require the O-rings 53 and 53' to ensure the airtightness of the pump. This is because the airtightness is sufficiently secured even if 53,53 ') is not present, or when the O-rings 53 and 53' are employed, the better airtightness is secured.

When the wire 19 is assembled as described above, since the wire 19 is fixed in the spot welded state to the metal frame 40, the wire 19 is already wired so that only the other wire 19 'is wired, thereby ensuring airtightness of the present invention. Since the configuration is not closely related to the configuration related to, detailed description thereof will be omitted.

And the present invention is provided with an inlet nozzle member 30 having a long pipe fitting groove 31 on one side.

The inflow nozzle member 30 is coupled to the tube fitting groove 31 so that the trailing edge 21b of the tail extension tube portion 21 of the discharge nozzle member 20 is forcibly fitted.

At this time, by using a hand press and a jig forcibly compresses and presses the end portion 21b of the rear extension tube portion 21 to the tube fitting groove portion 31 with a constant stroke (pressing force) to ensure uniformity in mass production. This invention can be implemented in a simpler process compared to the bonding process such as screw fastening or fusion, so that the present invention aims to secure a uniform airtightness, quality uniformity and productivity improvement for each product during mass production. It can be called a structure.

The pipe fitting groove 31 is not identified with the naked eye, but the end portion 21b which is forcibly fitted into the pipe fitting groove 31 by having a slight gradient (taper) that is wider and narrows toward the lower side thereof. It can also be fitted tightly to maximize adhesion.

In addition, when the end portion 21a is inserted into the tube fitting groove portion 31 by slightly applying an adhesive to the bottom surface of the end portion 21a, the adhesive is present between the tube fitting groove portion 31 and the end portion 21a. It can also be made to have good airtightness.

2 is a state in which the assembly is completed as described above, the present invention can be referred to as the entire part of the body corresponding to the portion between the two standing pieces 42, 42 'of the metal frame 40, The whole part will be named and described as the whole body part 50.

Therefore, the present invention is to be in a state in which the discharge nozzle member 20 and the inlet nozzle member 30 are coupled to both sides of the entire body portion 50, so that the plastic injection molding in the coupled state.

Referring to FIG. 4, the plastic injection molding may include an adhesion protrusion 22 of the discharge nozzle member 20, which is in close contact with the whole body portion 50 and the two standing upright portions 42 and 42 ′ of the metal frame 40, respectively. The close contact wheel part of the inlet nozzle member 30 is molded by insert injection molding so as to completely conceal the mold so that the entire outer portion of the entire body part 50 is covered with the plastic molding member 51. Outside the (22, 32) is to be molded so as to be covered with a cover each by a fixed protrusion (52, 52 ') integrally projecting with the plastic molding member (51).

At this time, since the plastic molding member 51 is also filled in the molding holes 43 formed in the two rising portions 42 and 42 'of the metal frame 40, the metal frame 40 and the plastic molding member 51 are filled. Can be integrated, resulting in a more robust and robust state.

On the other hand, for example, since the components, such as the induction coil 13, which are sensitive to moisture, are used by plastic injection molding, the plastic injection molding method itself is already known, and thus detailed description thereof will be omitted.

Therefore, the present invention is that the fluid is discharged to the discharge nozzle member 20 through the inlet nozzle member 30 and the trailing tube 21, the trailing tube 21 in which the discharge nozzle member 20 itself is integrated. Since the leakage nozzle is not generated at all in the close contact portion 22, which is a coupling portion between the discharge nozzle member 20 and the whole body portion 50.

And even if the rear extension tube part 21 is broken or cracked due to inevitable factors such as careless handling, or if a leak occurs due to a gap, the present invention is once blocked by the O-ring 53, and then a close contact stone Since the fixed protrusion wheel part 52 is completely covered and molded on the outside of the wheel part 22, the leak is blocked.

In addition, since the fixed protrusion wheel part 52 is completely covered and molded on the outside of the contact protrusion part 22, the fixed protrusion wheel part 52 integrated with the plastic molding member 51 causes the discharge nozzle member 20 to have the whole body portion ( 50) to be firmly fixed.

4 and 5, in the inlet nozzle member 30, the end portion 21b of the trailing tube 21 of the discharge nozzle member 20 is tightly coupled to the pipe fitting groove 31. Because of the excellent airtightness, the leakage of fluid is primarily blocked completely.

In this case, however, when water leakage occurs in a portion where the pipe fitting groove 31 and the end portion 21b are coupled due to an unavoidable factor, the O-ring 53 'blocks the water leakage secondarily, and thirdly, Since the fixed protrusion wheel part 52 'is completely covered and molded on the outside of the contact protrusion part 32, the leakage is blocked.

Therefore, since the whole body part 50 and the inlet nozzle member 30 are combined to have a leak-tight structure to block leakage in the third part, the present invention has a semi-permanent airtightness in which no leakage occurs during the pump lifetime. It is composed of a holding structure.

Since the release protrusion wheel part 52 'is completely covered and molded on the outside of the contact protrusion part 32, the release protrusion wheel part 52' integrated with the plastic molding member 51 causes the inlet nozzle member 30 to have the whole body part. It serves to be firmly fixed at 50.

Therefore, the present invention is a state of excellent airtightness is secured to prevent the leakage phenomenon in the combined portion of the whole body portion 50, the discharge nozzle member 20 and the inlet nozzle member 30 in advance, so as to improve the product function Product reliability is greatly improved.

In addition, the fixed protrusion wheel parts 52 and 52 'of the plastic molding member 51 configured to be injection molded to be integral with the metal frame 40 serving as the body of the pump are the discharge nozzle member 20 and the inlet nozzle member 30. ) Is firmly fixed to the whole body portion 50, so that the discharge nozzle member 20 and the inlet nozzle member 30 are not separated from the whole body portion 50 before the pump is forcibly damaged. Even if the vibration occurs during operation, the discharge nozzle member 20 and the inlet nozzle member 30 are never separated from the whole body portion 50, or the gap is not generated. Even semi-permanently, confidentiality is maintained.

And the present invention has been described by the drawings of one embodiment, but is not limited thereto, and design changes, etc. can be made by those skilled in the art, so that various changes within the equivalent of the technical spirit and claims of the present invention. As it is possible to implement, it is obvious that it should be broadly protected, unless the claims are greatly departed.

1 is a partial separation configuration in the production stage state of the solenoid pump in which the present invention is carried out,

Figure 2 is a combined configuration in the production stage state of the solenoid pump in which the present invention is carried out,

3 (a), (b) is a front cross-sectional view and one side configuration of the metal frame according to the present invention,

Figure 4 is a cross-sectional configuration of the solenoid pump completed by the present invention,

5 is a cross-sectional configuration of a line Y-Y 'of FIG.

Explanation of symbols on the main parts of the drawings

10: core 11: core internal hole

13 induction coil 14 pressurized check valve

15: magnetic plunger 16,16 ': elastic member

17: non-return valve 20: discharge nozzle member

21: tail extension tube 21b: end

22,32: close contact wheel part 30: inlet nozzle member

31: tube fitting groove 40: metal frame

41,41 ': Through-hole 42,42': Standing part

43: molding hole 50: the whole body

51: plastic molding member 52,52 ': fixed wheel part

53,53 ': O-ring

Claims (3)

When power is applied to the induction coil 13 wound on the bobbin 12 installed outside the core 10, the elastic members 16 and 16 having the magnetic plunger 15 having the pressure check valve 14 installed on both sides. ') The fluid flowing through the inlet nozzle member 30 is reciprocated in the longitudinal direction is discharged through the discharge nozzle member 20 in which the non-return valve 17 is built, The rear end of the discharge nozzle member 20 is formed to be integrally formed with a long tail extension tube part 21 penetrating in close contact with the inner surface of the core inner hole 11 into the tube hole 21a of the tail extension tube part 21. The entire body portion 50 in which the magnetic plunger 15 having the pressurized check valve 14 is installed to reciprocate between the two elastic members 16 and 16 'to be covered by the plastic molding member 51 is inserted therein. As an injection molded solenoid pump; The core 10 is coupled to penetrate through the core through holes 41 and 41 ′, and a plurality of molding holes 43 are formed in each of the upstanding piece portions 42 and 42 ′ supporting both sides of the core 10. A molding member 51 is filled with a U-shaped metal frame 40; One side surface of the inlet nozzle member 30 is provided with a long pipe fitting groove 31 so that the end portion 21b of the trailing tube 21 is forcibly fitted; The plastic molding member 51 on the outside of the contact nozzle portions 22 and 32 of the discharge nozzle member 20 and the inlet nozzle member 30, which are in close contact with each of the upstanding piece portions 42 and 42 ′ of the metal frame 40, respectively. The solenoid pump is airtight, characterized in that configured to be fixed by each of the fixing wheel portion (52, 52 ') formed to be molded and covered integrally with. delete delete

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