JPH0435596Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a transfer pump used for transporting sludge, etc., to the outside of an oil storage tank, for example, in the work of removing sludge, etc. generated inside an oil storage tank. It is related to.

[Prior Art] When crude oil, heavy oil, etc. are stored in an oil storage tank for a long period of time, products generated by chemical reactions and foreign substances in the oil accumulate on the bottom of the storage tank. These deposits form what is called sludge, but sludge can reduce the oil storage capacity of the storage tank and make the equipment installed in the storage tank inoperable. Then, it is necessary to carry out the sludge out of the tank and clean the inside of the tank.

Conventionally, when removing sludge from this type of oil storage tank, the sludge that has solidified at the bottom of the tank is crushed by input, then transported to the tank manhole using a unicycle brought into the tank, and then removed from the manhole. It was taken out of the tank with a scoop and transported to a designated location as needed.

[Problem that the invention aims to solve] There was a problem that the conventional method, which relied on human power, was not efficient.

[Purpose of the invention] To provide a sludge transfer pump that can save labor and improve efficiency in the work of removing sludge and the like in a storage tank, especially the work of transporting fluidized sludge to the outside of the tank. The purpose of this invention is to prevent the pump from generating heat so that the pump can be safely applied to transport sludge containing flammable substances such as oil.

[Means for Solving the Problems] In order to achieve the above object, the sludge, etc. transfer pump according to the present invention includes an elastically deformable tube into which sludge, etc. is sucked and pumped, and the tube. a roller section that presses and feeds sludge, etc. inside the pipe;
A transfer pump for sludge, etc., which has a motor in a case, a motor that drives the roller part, and a vacuum pump that evacuates the inside of the case, using an air motor as the motor and driving the air motor. The present invention is characterized in that a pressure air pipe is branched and arranged around at least the air motor, and a blowing nozzle is provided in the branch pipe so that at least the air motor is cooled by the pressure air.

[Operation] When the air motor drives the roller section and the roller section presses the tube inside the case, the fluid sludge contained in the tube is squeezed out of the case and transferred under pressure. . Furthermore, since the vacuum pump creates a vacuum inside the case, the tubes inside the case that have been crushed by the rollers quickly return to their circular shape, and sludge and the like are efficiently sucked in. A part of the pressurized air driving the air motor passes through the branch pipe and is blown from the blow-off nozzle to at least the air motor to cool it.

[Example] An example of the present invention will be described with reference to FIGS. 1 to 5.

1 to 3 are a plan view, a front view, and a right side view showing a squeeze pump, which is a transfer pump 1 for sludge, etc., according to this embodiment.

As shown in the figure, a substantially cylindrical container-shaped case 4, which is the main body of the pump 1, is installed on a frame 3 having wheels 2, with its axis aligned with the shaft 2a of the wheel 2. ing. As shown in FIG. 5, an elastic material 5 is provided on the inner surface of the peripheral wall 4a of the case 4 over approximately half the circumference. Inside the case, an elastically deformable circular tube 6 is provided which is curved into a U-shape along the elastic material 5. One lower end 6a and the other upper end 6b of the tube 6
are projecting to the outside by penetrating the peripheral wall 4a of the case 4 in an airtight structure in the tangential direction of the case 4 so as to be parallel to each other, and serve as an inlet 7 and an outlet 8 for sludge, etc., respectively. The inlet 7 and the outlet 8 are provided with joint parts 7a and 8a, respectively, the inlet 7 is connected to a nozzle (not shown) for sucking the fluidized sludge S, and the outlet 8 is connected to a nozzle (not shown) for discharging the sludge S (not shown). The hose is now connected.

Next, inside the case 4, a roller section 9 for pressing the tube 6 is provided. Roller part 9
The rotating shaft 10 is rotatably supported by bearings provided at the center of both side walls 4b, 4b of the case 4, and a sprocket 11 is fixedly attached to one end protruding from the case 4. There is. A frame plate 12 and a drive gear 1 are mounted on the rotating shaft 10 in the case 4.
3 is fixedly attached to the frame plate 12 at two positions symmetrical to each other with respect to the rotation axis 10.
Axes 14, 14 parallel to 0 are rotatably provided, respectively. A roller 15 and a driven gear 16 are fixed to this shaft 14, respectively, and both driven gears 16, 16 are connected to the drive gear 13 of the rotating shaft 10.
The rollers 15, 15 are configured to sandwich the tube 6 with the elastic material 5 and press it until it becomes flat. In addition, the rotation axis 1
A pair of guide rollers 17 are provided at two positions on the frame plate 12 that are 90 degrees apart from both rollers 15, 15 with respect to 0, and are rotatably guided by a tube 6 sandwiched therebetween.

Next, an air motor 18 is provided at the rear of the frame 3. A pipe 19 for feeding pressurized air for driving is connected to the air motor 18 via an air filter 20 . The output shaft of the air motor 18 is connected to the input shaft of a transmission 21, and a sprocket 22 is fixed to the output shaft of the transmission 21. And the sprocket 2
A chain 23 is wound between the sprocket 2 and the sprocket 11 fixed to the outer end of the rotating shaft 10.

Next, on the frame 3 next to the case 4, a vacuum pump 24 is provided to evacuate the inside of the case 4. The vacuum pump 24 is connected to the inside of the case 4 through a pipe 25 equipped with a vacuum switching valve, and is configured to be driven in conjunction with the air motor 18.

Next, a pipe 19 for sending pressurized air to the air motor 18 is branched before the valve 19a. This branched pipe 26 is further branched into two parts, each extending toward an air motor 18 and a vacuum pump 24. and the ends 27, 28 of each tube
are bent into a frame shape or L-shape to surround the air motor 18 and the vacuum pump 24.
At the ends 27 and 28 of each tube, a blowing nozzle 29 is provided as shown in FIG. 4, so that the air motor 18 and the vacuum pump 24 can be cooled by blowing out the supplied pressurized air. It is configured.

Next, the operation of the above configuration will be explained.

First, a suction nozzle, a hose, etc. are connected to the inlet 7 of the case 4, and the tip of the nozzle is guided to the fluidized sludge in the storage tank. Next, the air motor 18 is operated to rotate the roller portion 9 in the case 4, and when the rollers 15, 15 press the tube 6 in the case, the fluidized sludge S contained in the tube 6 is etc. are squeezed out of the case 4 and transferred under pressure, and are discharged to a predetermined position outside the storage tank. At this time, the vacuum pump 24
Since the inside is evacuated, the tube 6 inside the case 4, which has been flattened by the rollers 15, quickly restores its circular shape, and the sludge S etc. can be efficiently sucked in from the nozzle. . If this type of pressure feeding of sludge, etc. is continued for a long time, the air motor 1
8 and the vacuum pump 24 may become overheated, but in this embodiment, a portion of the pressurized air that drives the air motor 18 is transferred to both ends 27 and 24 of the branched pipe.
Since the air is blown to the air motor 18 and the vacuum pump 24 through the blow-out nozzle 29 from the air outlet 28, the air motor 18 and the vacuum pump 24 are constantly cooled with air and do not overheat. Therefore, Suratji S
Even if the sludge, etc. contains flammable substances such as oil, the present transfer pump 1 can be used to safely discharge the sludge, etc. in this case,
There is no problem in terms of safety even if the transfer pump 1 is placed in a storage tank and operated. In addition, if the sludge in the storage tank has fluidity from the beginning, it may be possible to directly suck the sludge through the nozzle attached to the inlet 7 of the case 4 as described above, but if the sludge is solidified, the sludge can be directly sucked in. If this is not possible, install a pressurized water injection means or the like in the above-mentioned drain, shred the solidified sludge with pressurized water to form a mixture of water and sludge, and suck this into the case 4 through the nozzle. It may also be possible to enter the

[Effects of the invention] According to the transfer pump for sludge, etc. according to the present invention, an air motor is used as at least the drive source of the transfer pump, and furthermore, it is configured to be cooled by jetting of pressurized air which is the power source of the air motor. Therefore, when removing sludge from oil storage tanks, etc., it is possible to save labor in carrying out the sludge, etc., and even sludge containing flammable substances can be transported safely and with high efficiency. be.

[Brief explanation of the drawing]

Figures 1 to 3 are a plan view, front view, and right side view showing one embodiment of the present invention, Figure 4a is a diagram showing the end of a branched pipe, and Figure 4b is the same view. a
FIG. 5 is a sectional view of the case in this embodiment. S... Sludge as a fluid to be transferred, 1... Transfer pump for sludge, etc., 6... Pipe, 9... Roller section, 18... Air motor, 19... Pressure air piping, 24... Vacuum pump, 27 , 28... Branched end of the tube, 29... Blowout nozzle.

Claims (1)

[Scope of utility model registration request] The case includes an elastically deformable tube into which the moving fluid is sucked and pumped, and a roller section that presses the tube to force-feed the moving fluid inside the tube, and drives the roller section. In a transfer pump for sludge, etc., which is equipped with a motor and a vacuum pump that evacuates the inside of the case, an air motor is used as the motor, and pressure air piping for driving the air motor is branched and arranged at least around the air motor. 1. A transfer pump for sludge, etc., characterized in that a blowing nozzle is provided on a branched pipe, and at least an air motor is cooled by the pressurized air.