KR19980061364U - Flow opening and closing device of lubrication pump - Google Patents

Abstract

Improve the reliability of the equipment by installing an auxiliary flow path to discharge the high pressure on the flow path of the lubrication pump after lubrication. Of course, the present invention relates to a flow opening and closing device of a fuel pump for a lubricator that can extend the life of the device, the present invention for the first flow passage 31 and the second flow passage 32 passing through the upper and lower parts of the oil supply pump body 30 A main opening and closing means installed between the first flow path 31 and the second flow path 32 when the oil feeding fan 33 is operated; When the first and second flow paths 31 and 32 are blocked by the main opening and closing means due to the stop of oil supply, the main opening and closing means is provided to communicate the first flow path 31 and the second flow path 32. It consists of auxiliary opening and closing means.

Description

Flow opening and closing device of lubrication pump

The present invention relates to a lubricator, and more particularly, by installing an auxiliary flow path for discharging high pressure on the flow path of the lubrication pump after lubrication to prevent malfunction of the device, The present invention relates to a flow opening / closing device of a lubricator oil supply pump capable of improving the reliability of a device by preventing leakage of cracks and extending the life of the device.

In general, the gas tanker installed at the gas station is a device for pumping oil from the oil tank stored at the bottom to supply the vehicle. Such a gas tanker meets various needs of consumers in addition to the general oil supply function in which the operator manually adjusts the oil supply volume. It is possible to control the function of lubricating only by the flow rate according to the amount of risk, and the function of lubricating only by the preset flow rate, so that products with various functions are being produced for convenience of using the device as well as service improvement for the consumer.

Such a lubricator includes a storage tank 1 for storing oil as shown in FIG. 1; A lubricator main body (2) provided with a lubrication pump (3) for pumping oil from the low oil tank, and a control part (5) for outputting a flow rate being lubricated to the outside and controlling the equipment; It is installed on both sides of the main body is largely composed of a fuel nozzle (4) for supplying the oil pumped from the oil supply pump (3) to the vehicle.

In particular, the refueling pump includes a body 30 of the refueling pump as shown in FIGS. 2 and 3; First and second flow paths 31 and 32 penetrating the upper and lower portions of the body and communicating with each other; An oil feeding fan 33 installed on the first flow path and rotating by the power of the driving motor 6 incorporated in the main oil main body 2 to generate a pumping force to draw oil from the oil storage tank 2; ; A filter 34 provided at an inlet side in the first flow path 31 to filter out impurities in the oil to be pumped; A bypass valve (35) installed in the first flow passage (31) for adjusting the discharge pressure of the oil; The other end of the elastic member 9, which is installed between the first and second flow paths 31 and 32, and has one end fixed to the body 30 so as to be selectively opened and closed between the first and second flow paths according to the pressure change in the flow path. A check valve 36 elastically coupled thereto; An air separation chamber (37) connected to the first flow path (31) by a thin pipe (37a) for separating air contained in the oil; It is provided in the upper part of the said 2nd flow path 32, and is comprised by the flowmeter 38 for measuring discharge flow volume.

Therefore, when using the lubricator, first, when the lubrication nozzle 4 hanging on the side of the lubricator main body 2 is removed from the main body 2, power is applied to the drive motor 6, and the lubrication pump 3 Interlocked.

Accordingly, the preparation for pumping oil from the oil storage tank 1 is completed. In this state, the fuel injection nozzle 4 is inserted into the fuel inlet (not shown) of the vehicle, and then a nozzle switch (shown in FIG. (Omitted), the fueling starts when the outlet of the fuel oil nozzle is opened.

That is, when the oil supply fan 33 of the oil supply pump 3 is rotated at high speed by the power of the drive motor 6, the oil in the oil storage tank 1 is driven by the rotational force to open the flow path of the oil supply pump 3. In this case, the oil flows through the filter 34 to remove the impurities contained in the oil, and then passes through the air separation chamber 37 by using the air contained in the oil to be concentrated in the center of the oil. Only the air is sorted out by the thin pipe 37a and the remaining pure oil continues to move along the flow path.

On the other hand, the flow path is divided into a suction side first flow path 31 and a discharge side second flow path 32 by the check valve 36, the first flow when the oil flows along the first flow path (31) Since the inside of the flow path becomes a high pressure state as the space is gradually occupied by the inflowing oil, the first flow path 31 and the second flow path 32 communicate with each other by pushing the check valve 36 by this pressure. (連 通) and the oil is moved to the second flow path 32 through this.

Thus, the oil which rises along the 2nd flow path 32 measures the discharge | emission of oil by the flowmeter 38 provided in the outlet side of this 2nd flow path, and the oil which exited the oil supply pump 3 is a solenoid valve ( 7)-discharged through the final lubrication nozzle 4 along the drain hose (8).

On the other hand, in the case of manual lubrication, the lubricator adjusts the lubrication nozzle 4 while watching the lubrication amount output to the control unit 5, and in the case of automatic lubrication, the oil supply nozzle ( If the 4) is inserted into the fuel inlet of the vehicle, the oil is supplied as much as the set oil supply amount, and when the set value is reached, the control unit 50 closes the solenoid valve 7 so that no more oil is discharged.

At this time, during the manual and automatic lubrication, the solenoid valve 7 is closed and the pressure rises in the flow path in common, thereby disconnecting the first and second flow paths 31 and 32 by the check valve 36. When the check valve blocks the first and second flow paths 31 and 32, the oil supply nozzle 4 is opened for oil supply and the oil supply nozzle 4 is closed to stop the oil supply. The high pressure is generated in the 32 compared to the normal discharge pressure. The high pressure causes the check valve 36 to be pushed toward the first flow path 31 and between the first flow path 31 and the second flow path 32. The connection portion is blocked to prevent surplus oil in the second flow path 32 from flowing back to the first flow path 31.

However, the high pressure generated in the second flow path 32 as described above is gradually extinguished with time, but maintains a high pressure until it disappears, so that each connection part or weak part of the second flow path 32 receives pressure. It is not able to withstand cracks, which is a problem of oil leakage, which shortens the life of the equipment.

In addition, the flowmeter 38, which measures the flow rate due to the high pressure in the second flow path 32, does not operate normally, resulting in an error in measurement, thereby degrading the reliability of the device.

The present invention has been made in view of the above conventional problems, the purpose is to be able to immediately mitigate even if a high pressure occurs in the flow path of the refueling pump after refueling.

The present invention for achieving the above object is provided between the first flow path and the second flow path penetrating the upper and lower parts of the oil supply pump body and the main opening and closing means for communicating the first flow path and the second flow path during operation of the oil supply fan and; When the 1st and 2nd flow paths are interrupted by the said main opening-closing means by the interruption | operation of lubrication operation | movement, it is comprised in this main opening-and-closing means and consists of the auxiliary opening-and-closing means which connects a 1st flow path and a 2nd flow path, When abnormal high pressure occurs in the flow path, the auxiliary opening and closing means is opened so that the first flow path and the second flow path communicate with each other to prevent malfunction of the equipment and oil leakage due to the pressure drop caused by the expansion of the space. It is to provide a switchgear.

1 is a longitudinal sectional view of a general oiler

Figure 2 is a longitudinal cross-sectional view of the refueling pump of Figure 1

3 is an enlarged view of a portion A of FIG. 2;

Figure 4 is a sectional view of the main portion of the main opening and closing means installed auxiliary opening and closing means of the embodiment of the present invention

5A is a cross-sectional view illustrating a state in which the main opening and closing means of FIG. 4 is opened.

5B is a cross-sectional view illustrating a state in which the auxiliary opening and closing means of FIG. 4 is opened.

* Description of the symbols for the main parts of the drawings *

31, 32: first and second euro 100: opening and closing plate

110: support plate 120: guider

130: packing piece 140: housing

141, 141-1: auxiliary flow passages 141a, 142b: inlet and outlet

143: insertion groove 150: packing member

151: protrusion 160: opening and closing member

170: return spring 180: fixed piece

Hereinafter, with reference to the accompanying Figure 4 will be described in detail.

In the body 30 of the oil supply pump for pumping oil in the oil storage tank 1, first and second flow paths 31 and 32 communicated with oil to pass therethrough are formed through the upper and lower parts of the body, The main opening / closing means for selectively opening and closing the flow path is elastically installed by the elastic member 9 between the first flow path 31 and the second flow path 32 to prevent the flow of oil back.

The main opening and closing means has an area larger than the diameter of the first flow path 31 and the opening and closing plate 100 detachable to the end of the first flow path; A support plate 110 installed in close contact with an outer surface of the opening and closing plate to support the opening and closing plate; It is installed on the inner surface of the opening and closing plate 100, the bottom surface is in close contact with the wall surface of the first flow path 31 so as to guide during operation " Consists of a '' shape guider 120, and consists of an auxiliary opening and closing means for integrally fastening the support plate 110, the opening and closing plate 100, the guider 120 of the main opening and closing means from the inside to the outside, A packing piece 130 for maintaining airtightness is sandwiched between the guider 120 and the auxiliary opening and closing means.

On the other hand, the auxiliary opening and closing means is a space portion 142 formed to open the front end therein, the auxiliary flow passage 141 formed in the central axis direction so as to communicate with the space portion and the second flow path 32 and the other end of A frame 140 penetrated by a nut 143a by penetrating a portion having a thread 143 formed on an outer circumferential surface thereof in the axial direction of the guider 120, the opening and closing plate 100, and the support plate 110 of the main opening and closing means; A packing member 150 bonded to the inside of the space 142 of the frame and having an auxiliary channel 141-1 having the same size so as to communicate with the auxiliary channel 141; An opening / closing member 160 which closes the outlet 141b side of the auxiliary flow passage 140, 140-1 having the inlet and outlet 141a and 141b by the elastic force of the return spring 170, and the return spring. It consists of a fixing piece 180 is coupled to the end of the frame 140 so that 170 is fixed.

A plurality of protrusions 151 are formed on the outer circumferential surface of the packing member 150, and an insertion groove 143 having a corresponding shape is formed on the wall surface of the space portion 142 of the frame 140 so that the protrusions are inserted therein. Strengthen the bond.

In addition, a guide groove 152 of a size into which a part of the opening and closing member 160 may be inserted is formed at the outlet 141b side of the auxiliary flow path 141-1 formed in the packing member 150.

According to the present invention configured as described above, the driving motor 6 operates when the oil supply nozzle 4 is separated from the oil supply main body 2 in order to use the oil supply device. Accordingly, the oil supply fan 33 receives power from the driving motor. This high speed rotation causes the oil in the oil storage tank 1 to be sucked along the flow path.

The pressure of the first flow path 31 rises due to the oil sucked in this way, and the opening and closing means is pushed toward the second flow path 32 by this pressure, so that the first and second flow paths 31 and 32 are opened to each other. The oil rises toward the second flow passage from the first flow passage and is discharged.

At this time, the thread 143 portion of the frame 140 penetrating the guider 120, the opening and closing plate 100, and the support plate 110 of the main opening and closing means so as to protrude to the predetermined length from the support plate and the nut 143a. When fastening by), the main opening means and the auxiliary opening means are integrally fastened.

Therefore, when opening and closing between the first and second flow paths 31 and 32, the main opening and closing means are operated at the same time, and the guider 120 is guided along the first flow path 31 during the opening and closing operation. You will be able to reach

On the other hand, when the oil is stopped, the solenoid valve 7 is closed and the flow path is momentarily sealed, and the second flow path 32 is in a high pressure state, and the pressure opens the main opening and closing means including the auxiliary opening and closing means. The first and second flow passages 31 and 32 are disconnected by being pushed toward the first flow passage 31 so that the opening and closing plate 100 comes into close contact with the end of the first flow passage 31.

At this time, a high pressure exists in the second flow path 32. When the high pressure is greater than the elastic force of the return spring 170, the outlet 141b is blocked through the auxiliary flow paths 141 and 141a which are the only discharge passages. By pushing the opening / closing member 160, the return spring 170 is elastically compressed to open the auxiliary flow passages 141 and 141-1. Thus, the first and second flow passages 31 and 32 are the auxiliary flow passages 141. 141-1 is in communication, the pressure is reduced because the flow path area becomes wider.

The opening and closing plate 100 is installed to maintain the airtight between the first flow path 31 and the second flow path 32, the packing member 150 is installed to maintain the airtight with the opening and closing member 160 as In order to satisfy this, it is preferable to use a rubber having good adhesion, but not limited thereto. Any material may be used as long as it can obtain the same effect.

In addition, the packing member 150 formed a plurality of protrusions 151 on the surface of the packing member in order to further enhance adhesion even though the packing member 150 is bonded to the wall of the space portion 142 of the frame 140, the space portion in contact with the packing member 150. 142 is formed in the insertion groove 143 of the corresponding shape so that the projection is inserted to be separated from the frame 140 by the bonding force by the protrusion 151 and the insertion groove 142, and the adhesive force by the bonding process. To prevent as much as possible.

At the end of the packing member 150 to which the opening and closing member 160 is in close contact, a guide groove 152 is formed to insert a part of the opening and closing member to assist the opening and closing operation of the opening and closing member 160. It serves as a guide to be accurately located on the exit (141b) side of -1).

If high pressure occurs even after refueling, the flow path is interlocked by the auxiliary flow path to quickly remove the high pressure. Therefore, the internal parts can be protected from high pressure, reducing the failure rate of the device and leaking into the connection or vulnerable parts. It can be prevented to have the advantage of improving the reliability of the device.

Claims (9)

A main opening and closing means installed between the first flow passage and the second flow passage penetrating the upper and lower portions of the oil supply pump body to communicate the first flow passage and the second flow passage during operation of the oil feeding fan; When the first and second flow paths are blocked by the main opening and closing means by the refueling stop, the main opening and closing means is provided with a main opening and closing means for the first oil passage and the second flow path for communicating with the second flow path Pump channel opening and closing device. The method of claim 1, An opening and closing plate to which the main opening and closing means is attached to and detached from one end of the first flow path; A support plate installed in close contact with an outer surface to support the opening and closing plate; A guider having a bottom surface in close contact with the first flow path surface to guide the inner surface of the opening and closing plate along the first flow path surface; One end is fixed to the outer surface of the support plate and the other end of the flow path opening and closing device of the lubricator oil supply pump characterized in that it comprises a configuration comprising an elastic member fixed to the body. The method of claim 1, A frame having an auxiliary flow path through which the auxiliary opening and closing means penetrates in the axial direction of the guider, the opening and closing plate, and the support plate; A packing member inserted into the frame and having an auxiliary channel of the same size communicating with the auxiliary channel; A channel opening and closing device of the oil supply pump for lubricator, characterized in that composed of an opening and closing member elastically installed to selectively open the outlet of the auxiliary flow path formed in the packing member. The method of claim 2 or 3, A channel opening and closing device for an oil pump for a lubricator, characterized in that a packing piece is inserted between a frame and a guider. The method of claim 2 or 3, And a thread is formed on the outer circumferential surface exposed to a predetermined length after the outer end of the frame passes through the support plate, and a nut is fastened to the screw thread. The method of claim 3, wherein And a plurality of protrusions formed on an outer circumferential surface of the packing member, and an insertion groove is formed on an inner wall of the frame so that the protrusions can be inserted. The method of claim 3, wherein Flow opening and closing device of the oil feed pump for lubricator, characterized in that the packing member is rubber. The method of claim 3, wherein A flow path opening and closing device of the oil feed pump for the lubricator, characterized in that the packing member is bonded to the frame. The method of claim 4, wherein A flow opening and closing device for a lubrication pump for oiling machine, characterized in that the packing piece is rubber.