JPH0557382U - Viscous fluid supply pump - Google Patents

Abstract

(57) [Abstract] [Purpose] In a viscous fluid supply pump, regardless of the state of the viscous fluid in the container, it is possible to reliably detect the replacement time of the container and to make the detection device compact. Is to [Structure] In a viscous fluid supply pump in which the pump body (45) is attached to a container that contains viscous fluid and the viscous fluid is sucked from the inside of the container and discharged to the outside of the container, A flow detection device main body (63) for sensing the flow of fluid is connected, and the main body (63) has a through hole (61) through which a viscous fluid flows and is inserted into the through hole (61). It is provided with a detected body (64) movable according to the flow of the viscous fluid, and a detection means for detecting the presence or absence of the flow of the viscous fluid by detecting the movement of the detected body (64). And a viscous fluid supply pump.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention sucks a viscous fluid such as grease directly from a commercially available container such as a drum can, a pail can, or a square can, and discharges it at a high pressure in a relatively small amount to an oil supply point of an industrial machine or the like. A viscous fluid supply pump that can supply a viscous fluid such as lubricating oil directly or through a distribution valve, especially when the viscous fluid in the container is exhausted or clogged, the amount of viscous fluid discharged decreases. The present invention relates to a viscous fluid supply pump having a detection device for detecting a broken state.

[0002]

[Prior Art]

 As a viscous fluid supply pump provided with the above-mentioned detection device, those shown in FIGS. 3 to 5 have been conventionally known. In FIG. 3, a viscous fluid such as grease is contained in a container A such as a commercially available drum, pail or square can, and the upper lid 1 is detachably attached to the upper side of the container A. A pump body 3 incorporating a drive source 4 such as a geared motor is fixed to the upper part of the upper lid 1, and the pump body 3 is provided with a suction cylinder 5 penetrating the upper lid 1 and projecting downward. The pump body 3 and the suction cylinder 5 constitute a pump 6. In the figure, reference numeral 10 is a detection device (level sensor). The detection device 10 follows the liquid surface at the lower end of a rod 11 vertically movably provided in parallel with the suction cylinder 5. And a float 12 that moves up and down are attached, and a large-diameter portion 14 for detection is formed on the upper end of the rod 11, and the large-diameter portion 14 is formed on the upper surface of the upper lid 1 where the rod 11 passes. A low level switch 16 that turns on and off when passing through the section 14 is configured. In the detection device 10, the float 12 and the rod 11 fixed to the float 12 descend in accordance with the decrease of the viscous fluid, and when the float 12 descends to the lowermost portion, the large diameter portion 14 causes the low level switch 16 to move. Turn on and off and take out this signal to know when to replace the container.

FIG. 4 shows another detection device, in which a float 23 incorporating a magnet 22 is slidably fitted to a pipe-shaped guide member 21 having a reed switch 20 incorporated therein, which reduces viscous fluid. The movement of the float 23 that descends following the above is detected by the on / off operation of the lead switch 20.

In the detection device shown in FIG. 5, a float 31 is vertically movably inserted through two small-diameter rods 30 as guide members, and a float 31 is attached between a display unit 33 attached to the outer surface of the upper lid 1 and the float 31. The tape wire 34 is stretched, the descending motion of the float 31 is transmitted to the display unit 33 via the tape wire 34, the gear mechanism in the display unit 33 is operated to move the pointer, and at the same time the limit switch is turned on or off. By doing so, it is possible to know when to replace the container.

[0005]

[Problems to be solved by the device]

 As described above, there are various types of detection devices for detecting the minimum amount of fluid or the replacement time, but each has the following problems. In the structure shown in FIG. 3, although the operation is reliable, a space corresponding to the rod length, that is, a space corresponding to the height of the container is required above the upper lid 1, and the pump cannot be installed in a narrow space. Remains.

Although the structure shown in FIG. 4 does not require a large space outside the container, since the reed switch 20 is incorporated in the guide member 21, the outer diameter of the guide member 21 is inevitably large. For this reason, there is a problem that the viscous fluid having a high viscosity tends to adhere between the surface of the guide member 21 and the float 23, and the float 23 becomes immobile during the use process.

The structure shown in FIG. 5 is expensive and requires a large installation space for the detection device, and is not suitable for a small container such as a commercially available drum or pail.

Further, in any of the structures of FIGS. 3 to 5 described above, when a high viscosity grease such as No. 2 grease is stored and used under the conditions of 0 ° C. in winter, for example, the pump suction port Even though the air is sucked in at, the detector stays on the grease and does not turn on or off. This is because the fluid has a high viscosity, so that the surface of the fluid does not become flat and the fluid around the pump suction port is quickly sucked up, resulting in a mortar-like surface. In addition, placing such a level sensor in a small container with a diameter of less than 30 cm, such as a pail, is greatly restricted considering the pump space.

[0009]

[Means for Solving the Problems]

 In a viscous fluid supply pump in which the pump body is installed in a container that stores the viscous fluid, and the viscous fluid is sucked from the container and discharged to the outside of the container, the viscous fluid flows to the fluid outlet of the pump body. A body of a flow detecting device for sensing is connected to the main body, and a through hole through which the viscous fluid flows, and an object to be detected which is inserted into the through hole and is movable according to the flow of the viscous fluid, A viscous fluid supply pump characterized by comprising detection means for detecting the presence or absence of the flow of the viscous fluid by detecting the movement of the detected body.

[0010]

[Action]

 The flow detection device detects the flow of viscous fluid on the discharge side of the pump.If the fluid is no longer sucked in due to the time to replace the container, etc., the movement of the detected object in that case is detected. It is detected by a detection means such as a reed switch. By doing so, you can know when to replace the container.

[0011]

【Example】

 FIG. 1 is a vertical sectional view of a viscous fluid supply pump to which the present invention is applied, showing a state where the viscous fluid supply pump is attached to a small container A such as a pail can. The viscous fluid supply pump 41 includes a dish-shaped lid portion 42, a drive device 43 such as a geared motor fixed to the upper surface of the central portion of the lid portion 42, and a transmission extending downward from the drive device 43 into the container A. It has a portion 44 and a pump body 45 provided at the lower end of the transmission portion 44. The transmission unit 44 includes a tubular support pipe 46, a universal joint 47, and a stretchable connecting shaft 48. The output shaft 50 of the drive device 43 is a pump in the pump body 45 via the universal joint 47 and the connecting shaft 48. The support pipe 46 is interlockingly connected to the shaft 51, the connection pipe 48 and the like are internally provided, the upper end is fixed to the lid portion 42, and the lower end is fixed to the pump main body 45. For example, two fluid discharge ports 58 are formed on the upper surface of the pump body 45, and a transfer pipe 55 is connected to each discharge port 58, and the transfer pipe 55 extends upward and penetrates the lid portion 42, respectively. It is connected to the outlet 60. Although not shown, the delivery port 60 is connected to a lubricating point of various machines via a connecting pipe or the like. Further, the oil supply port 60 may be merged into one port. A fluid suction port 57 is provided on the lower surface of the pump body 45.

The flow detection device 59, which is an essential part of the present invention, is connected between the fluid discharge port 58 and the transfer pipe 55. In FIG. 2 showing an enlarged vertical sectional view of the detection device 59, the detection device 59 includes a detection device main body (casing) 63 having first and second through holes 61 and 62 that are parallel to each other, and a first through hole 61. A body 64 to be reciprocally fitted for a predetermined distance, and a ridge 65 arranged in the first through hole 61 to urge the body 64 to the lower end side of the first through hole 61. An adjusting bolt 73 for adjusting the set load of the spring 65, a detector (detecting means) 66 for slidably fitted in the second through hole 62 to detect an object to be detected 64, and this detector It is composed of a set screw 67 for fixing 66 in the second through hole 62 at an arbitrary position.

The detected body 64 includes a magnet 68 and a magnet holder 69 that holds the magnet 68. The detector 66 includes a reed switch 70 and a switch holder 71 that holds the reed switch 70. It is composed of and. The lead wire 72 connected to the contact of the reed switch 70 is led out from the reed switch holder 71.

In a state where the detected body 64 is located at the stroke limit on the lower end side by the urging force of the spring 65, the reed switch 70 is turned on, for example, and the first through hole 61 is inserted into the through hole 61 from below. When the viscous fluid flows in and the resistance thereof causes the non-detection body 64 to move upward against the urging force of the spring 65 to the upper limit stroke, the reed switch 70 is switched from on to off. The lead wire 72 is connected to alarm devices such as an alarm lamp, an alarm buzzer, and an alarm display mechanism.

Next, the operation will be described. In FIG. 1, the driving force from the drive device 43 is transmitted to the pump shaft 51 in the pump body 45 via the connecting shaft 48 in the transmission portion 44 and drives the pump body 45. As a result, the viscous fluid in the container A is sucked from the lower surface suction port 57 of the pump body 45, discharged from the discharge port 58, passed through the flow detection device 59, and transferred to the outside of the container via the transfer pipe 55. Discharge with pressure.

While the fluid is being discharged, the detected body 64 is pushed up against the spring 65 by the pressure of the fluid, whereby the lead switch 70 is turned off. When the level of the fluid in the container A drops to the suction port 57, the fluid is no longer sucked, and the fluid is no longer discharged from the discharge port 58, the detected body 64 descends, the reed switch 70 turns on, and the alarm device is turned on. Activate.

[0017]

[Another embodiment]

 It is possible to stop the pump by connecting the lead wire 72 to the alarm device and also to the drive device to issue an alarm and stop the drive device at the same time. In the detection device of FIG. 2, the reed switch 70 is turned on when the detected body 64 is moving up, and the reed switch 70 is turned off when the system detected body 64 is moved down to activate the alarm mechanism. It can also be configured. The detection device 59 can be provided in the oil supply port 60 as shown by the phantom line in FIG.

[0018]

[Effect of the device]

 As described above, according to the present invention, as a detection device for knowing when to replace a container, a flow detection device main body for detecting the flow of viscous fluid is connected to the discharge side of the pump, and the main body is connected to the main body. A through-hole through which the viscous fluid flows, an object to be detected inserted into the through-hole and movable according to the flow of the viscous fluid, and a flow of the viscous fluid by detecting the movement of the object to be detected. Since the detection means for detecting the presence / absence of the fluid is provided: (1) The fluid discharge end timing can be reliably detected regardless of the state of the viscous fluid in the container. In particular, when a high-viscosity grease such as No.2 grease is stored and used under conditions near 0 ° C in winter, for example, the surface of the fluid does not become flat and the fluid around the pump suction port is quickly sucked up. Therefore, even when the fluid surface is in the shape of a mortar, it is possible to reliably detect when to replace the container.

(2) A flow detecting device for detecting the flow of the viscous fluid is connected to the discharge side of the pump to detect the flow of the viscous fluid so as to know when to replace the container. Therefore, compared to the conventional level sensor etc. in Fig. 3 etc., the installation space is smaller and it is possible to achieve compactness.

[Brief description of drawings]

FIG. 1 is an overall vertical cross-sectional view of a viscous fluid supply pump to which the present invention is applied.

FIG. 2 is an enlarged vertical cross-sectional view of a flow detection device.

FIG. 3 is a vertical sectional view showing a conventional viscous fluid supply pump.

FIG. 4 is a cross-sectional perspective view showing another conventional flow detection device.

FIG. 5 is a front view showing still another conventional flow detection device.

[Explanation of symbols]

 41 Viscous Fluid Pump 43 Drive Device 45 Pump Main Body 58 Fluid Discharge Port (One Example of Discharge Side Part) 60 Outflow Port (Other Example of Discharge Side Part) 61 First Through Hole 63 Flow Detection Device Main Body 64 Detected Object 66 Detection Vessel (detection means)

Claims (1)

[Scope of utility model registration request] 1. A viscous fluid supply pump in which a pump main body is attached to a container for storing the viscous fluid and the viscous fluid is sucked from the inside of the container and discharged to the outside of the container. A flow detecting device main body for detecting the flow of the viscous fluid is connected to the main body, and a through-hole through which the viscous fluid flows, and an object to be detected which is inserted into the through hole and is movable according to the flow of the viscous fluid And a detection means for detecting the presence or absence of the flow of the viscous fluid by detecting the movement of the object to be detected.