JPS6035188A - Pumping device - Google Patents

Abstract

PURPOSE:To pump up liquid in a hydraulic tank, water service line or a lake, by providing an aperture on the hydraulic tank to be opposite to the suction opening of a pump and installing a closing plug and a suction tube on the aperture to be freely mounted on and demounted from said aperture. CONSTITUTION:An aperture 23 is provided on a part of a hydraulic tank 8 so as to be opposite to a suction opening of the tank. The aperture 23 is so constructured that a plug 27 for closing the aperture 23 and a suction tube 30 penetrating through the aperture 32 and coupling the suction opening of a pump to a suitable supplying pipe 32 can be installed to be freely mounted on and demounted from the tank. The hydraulic tank 8 is closed by the plug 27 in case of pumping the liquid in the hydraulic tank, and the liquid outside the hydraulic tank 8 can be pumped up by way of the suction tube 30 by fastening the suction tube 30 penetrating through the aperture 23 to the tank, in case of pumping up the liquid outside the hydraulic tank.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pump device that pumps various liquids to desired locations. Submersible pumps are well known as pumps that are immersed in liquid, but since known submersible pumps are centrifugal pumps, it is difficult to pump liquid under high pressure.

As a pump device for solving this problem, we have previously provided a device shown in Japanese Patent Publication No. 157652/1983. In the device of this earlier application, a plunger pump is arranged at the upper part of a liquid tank, the cylinder of this pump is placed in a position where it is immersed in the liquid in the liquid tank, and the suction port at the lower end of this cylinder is opened directly into the liquid, The discharge port is connected to a liquid sending pipe that leads to the outside of the tank, but the device of this earlier application does not pose a problem when used in a place where it is easy to replenish liquids such as water into the liquid tank, but There is a problem that it cannot be used in places where the water pressure of the tap water source is low, or in places where there is no running water and water from wells or ponds must be used.

The purpose of this invention is to solve the problem described in item 1 above.The purpose of this invention is to suck up the liquid in a liquid tank in places where it is easy to replenish water, etc. In places, liquids from taps or ponds were forcibly sucked into the water.

That is, in the present invention, a part of the liquid tank is provided with an opening opposite to the suction port of the pump, and this opening is provided with a plug for closing the opening, and a plug that passes through the opening "I" and connects the suction port of the pump as appropriate. The structure is such that the liquid suction pipe connected to the liquid supply pipe can be detachably attached.

Since this invention has the above configuration, when sucking up the liquid inside the liquid tank, the opening of the liquid tank is closed with a plug, and when sucking up the liquid outside the liquid tank, a liquid suction spout penetrating through the opening is attached. Through this date and time, liquid such as water from outside the liquid tank can be sucked up.

The details of the present invention will be explained below based on an embodiment shown in the accompanying drawings.

In the figure, reference numeral 1 denotes a box-shaped main body made of a steel plate or the like, and has a pair of front wheels 2, a pair of rear wheels 3, and a handle 4, which are swingable.

A prime mover stand 5 is provided at the rear of the main body 1, and a prime mover 6 such as an electric motor is fixed to the -L thereof.

8 is a liquid tank that is removably inserted into the front of the main body 1, and is made of plastic, with a portion left open.

A liquid supply port 9 and a liquid supply port 10 are provided on one side of the front wall of the tank 8. It passes through the opening and is removably fixed with a screw. Further, a float lube 11 is provided at the inner end of the liquid supply port 9 to control the water supply and keep the liquid level in the tank 8 constant.

14 is a plunger pump, and the upper part is the crankcase 15.
The lower part is a cylinder 16, and the output shaft 17 of the prime mover 6 is connected to the crank inside the crankcase 15.

The cylinder 16 is submerged in the liquid in the tank 8, and its suction port 1
8 is at the bottom end as shown in FIGS. 3 and 4. Further, a liquid feed pipe 20 is connected to the discharge port 19 at the lower end side of the cylinder 16, and the liquid feed pipe 20 is connected to the liquid feed port 10, and a part of the cylinder 16 is provided with an unload valve 21.

22 in FIGS. 3 and 4 is a cylinder that connects the bottom of the tank 8 and the bottom of the main body 1, and the inside thereof is the opening 23.
Also serves as a drain hole. This threaded cylinder 22 has a collar 24 at the middle part of its outer periphery, and this collar 24 and a nut 25 screwed into the -I part of the threaded cylinder 22 are used to tighten the tank 8 and the bottom of the main body 1 via an O-ring. and fix it.

In the case of FIG. 3, a rubber plug 27 is applied to the lower end of the threaded cylinder 22, and this plug 27 is fixed with a cap nut 28 screwed into a male thread on the outside of the lower part of the threaded cylinder 22.

In the case of FIG. 4, the liquid suction tube 30 is fitted into the threaded tube 22, the collar 31 on the outer periphery of the lower end is applied to the lower end of the pipe tube 22, and the collar 33 on the outer periphery of one 11th end of the curved tube 32 is attached to the collar. 31 and tightened with a cap nut 28. If the liquid suction tube 30 and the curved pipe 32 are made of plastic, the collar 31.
Part 33 of the packing can be omitted.

The outer periphery of the second end of the liquid suction port cylinder 30 is set to 2, and the suction port 1 is
8 also chi/? When the liquid suction port cylinder 30 is attached as shown in FIG.

The pump device embodying the present invention has the above-mentioned configuration, and its operation will be explained below.

As shown in Fig. 3, when the opening 23 is closed with the plug 27 and tap water, etc. is supplied from the liquid supply port 9 through the float (lube 11) into the tank 8 to maintain a constant level, as shown in Fig. 1. The cylinder 16 is submerged in the liquid.

In this state, the prime mover 6 is started to drive the crankshaft of the pump 14, and by reciprocating the plunger in the auxiliary L1 cylinder 16, the liquid in the tank 8 is pumped through the suction port shown in FIG. 3 in the same manner as a known plunger pump. At 18, the liquid is sucked in and sent out from the discharge port 19 to the liquid feed port 10 via the liquid feed pipe 20.

In this case, since the suction port 18 is submerged in the liquid, the liquid can be sucked in without a suction pipe, which saves piping, and since the suction valve and discharge valve are submerged in the liquid, the noise caused by the operation of the valve body is significantly reduced. It becomes less.

Since the cylinder is submerged in liquid, there is no risk of sucking air into the cylinder from the sliding part and reducing pump efficiency, and the liquid in the tank provides lubrication and cooling, so there is no need for grease or grease. . Therefore, there is no need for a special device for cooling, and the energy required for driving can be reduced.

However, if the water pressure of the water supply supply 19 is low and water cannot be smoothly supplied to the liquid tank 8, or if there is no water supply and continuous water cannot be supplied to the tank 8, operation will not be possible. becomes.

In this invention, when it is difficult to supply liquid to the liquid tank 8 as shown in -, the cap nut 28 is removed, the plug 27 is removed, and the liquid suction pipe 30 and the curved pipe 32 are removed as shown in FIG. If the end of the hose connected to the bent pipe 32 is inserted into a water pipe with low water pressure, a well or a pond, and the pump 14 is operated, water will be forcibly sucked and water will be sent from the discharge port 10 to the required area. can do. In addition, the various effects described above can be obtained by filling the tank with water that reaches a predetermined level.

[Brief explanation of the drawing]

Fig. 1 is a partially vertical side view showing an example of the pump device of the present invention, Fig. 2 is a partially cutaway bottom view of the same as above, and Figs. 3 and 4 are enlarged longitudinal sectional views showing each state of the main parts. It is. 8...Liquid tank, 10...Liquid feeding port, 14...Plunger pump, 16...Cylinder, 18...Suction port, 19...Discharge port, 20...Liquid feeding pipe, 23...・Open 1
”, 27...Plug, 30...Liquid suction pipe Patent applicant: Arimitsu Kogyo Co., Ltd., same agent, sickle 1) Text 2 Japanese Patent Application Publication No. 2003-035188 (4)

Claims (1)

[Claims] A 70 lange pump is placed above the liquid tank, and the cylinder of this pump is placed in a position where it is immersed in the liquid in the liquid tank. In a pump device that communicates with a liquid sending pipe leading to the outside, a part of the liquid tank is provided with an opening facing the suction port of the pump, and this opening is provided with a plug that closes the opening and a plug that passes through the opening and connects the pump. A pump device having a structure in which a liquid suction port connecting the suction port to a suitable liquid supply pipe can be detachably attached.