JPH0140876Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pump barrel for discharging stored liquid, and in particular, a foot valve provided at the lower end of the barrel body can be passed through the barrel body and removed from the upper end thereof. The present invention relates to a pump barrel in which maintenance and inspection of the foot valve can be performed even in a liquid storage state.

[Prior Art] Generally, an underground tank has a structure in which a bottomed cylindrical concrete tank body is buried underground and a dome-shaped roof is attached to the upper end of the tank body that protrudes above the ground. , natural drainage of accumulated liquid is difficult. Therefore,
Since it is more convenient to discharge the stored liquid from the roof close to the ground, a barrel body 4 inserted downwardly into the stored liquid 3 from the roof 2 of the storage tank 1 is used as a means for discharging the stored liquid, as shown in FIG. A pump 5 is seated on the lower end of the barrel body 4 so that it can be pulled out from the upper end thereof, and a foot valve is provided at the lower end of the barrel body to close the pump and is opened by the seating load of the pump 5. It consists of 6.

[Problems to be solved by the invention] However, in the conventional pump barrel, the foot valve 6 was fixed to the lower end of the barrel body 4 by a flange joint, etc., so that the storage tank 1
The foot valve 6 cannot be removed while the liquid 3 is contained in the tank 1, and maintenance and inspection of the foot valve 6 can only be carried out after all the liquid 3 has been removed from the storage tank 1.

[Purpose of the invention] The present invention was devised to effectively solve the problems of the prior art described above, and its purpose is to separate the foot valve from the barrel body while the liquid remains in the storage tank. The purpose is to provide a pump barrel that can be easily serviced.

[Summary of the invention] In order to achieve the above object, the present invention forms a foot valve seating part on the lower end of the barrel body for seating the foot valve in such a way that it can be pulled out from the upper end of the barrel body. A locking means for fixing the foot valve is provided on the barrel body, so that the foot valve can be removed to the outside through the barrel body.

[Example] An example of the present invention will be described below in detail based on the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a storage tank such as an underground tank, and a pump barrel 7 is provided on the roof 2 of the storage tank 1 for discharging the stored liquid 3 contained in the storage tank 1 to the outside of the storage tank 1. This pump barrel 7 is connected to the roof part 2
It has a barrel body 4 made of a cylindrical body that penetrates through and hangs down from this into the liquid storage 3, and this barrel body 4
A foot valve seating portion 8 is formed at the lower end portion of the valve holder 8 and has an inward flange shape and a tapered upper surface for seating the foot valve 6 therein.

As shown in FIGS. 3 and 4, the foot valve 6 includes a cylindrical foot valve body 9 that is removably seated on the foot valve seat 8, and a foot valve body 9 that is provided at the lower end of the foot valve body 9 so as to be openable and closable. It is mainly composed of a valve body 10. The foot valve main body 9 has a tapered flange portion 11 at its upper end that engages with the foot valve seat portion 8.
The upper surface of this flange portion 11 has a pump 5
It is formed as a pump seating part 12 for seating the pump. The lower end of the foot valve main body 9 is formed to have a length that slightly projects from the lower end opening 13 of the barrel main body 4, and a return spring 14 that urges the valve body 10 in the valve closing direction is attached to this projecting opening end. It is attached through. A suction guide portion 16 on which a lower end suction port 15 of the pump 5 is seated is formed on the inner surface of the valve body 10 . The valve body 10 is configured to open when the suction guide portion 16 is pushed down by the suction port 15 when the pump 5 is seated, and is closed by the spring force of the return spring 14 when the pump 5 is pulled up. is configured to do so.

In addition, the pump 5 consists of a so-called submersible pump,
A tapered bottom part 17 whose diameter is gradually reduced to engage with the pump seating part 12 is formed at the lower end, and at the center of this bottom part 17, a suction port 15 is formed that further protrudes from this, and the upper end There is a discharge port 1 in the part.
8 is formed.

As a locking means for fixing the foot valve 6 configured as described above to the foot valve seat 8, a lock lever 19 is supported at the lower end of the barrel body 4, the tip of which rotates to protrude and retract from the peripheral edge of the opening 13 in the radial direction. Axis 2
The foot valve body 9 is rotatably provided through the foot valve body 9.
An annular engagement groove 21 with which the tip of the lock lever 19 engages is formed on the outer periphery of the lock lever 19. A plurality of lock levers 19 are provided at the lower end of the barrel body 4 in the circumferential direction. In order to remotely control these lock levers 19 from outside the storage tank 1, a conversion lever 23 for converting the reciprocating movement of the operating wire 22 into rotation is pivotally supported near each lock lever 19 by a pin 24, as shown in FIG. The output end 25 of the lever 23 is connected to the intermediate link 2 at the rear end of the lock lever 19.
6, and the input end 27 of the conversion lever 23 is connected to the lower end of an operating rod 29 which is supported through the roof 2 via a gasket 28.
They are connected via 2. In Figure 1, 3
0 is a cover attached to the packing 28.

The inside of the barrel body 4 is formed as a passage through which the pump 5 and the foot valve 6 can move up and down, and the upper end opening is formed as an inlet/outlet port 31 for the pump 5 and the foot valve 6. A hook 33 for stopping the other end of a foot valve hanging wire 32 whose one end is fixed to the foot valve main body 9 is attached to the entrance/exit 31, and a lid 34 for closing the entrance/exit 31 is detachably attached by bolting or the like. It is being Also, the lid body 3
A pump suspension wire 35 is stretched between the pump 4 and the pump 5 via stoppers 36 and 37. Further, a discharge pipe 38 is connected to the upper end of the barrel body 4.

Next, a case in which the pump 5 and foot valve 6 are removed will be described. First, from the barrel body 4 to the lid body 34
The pump 5 is removed to open the entrance/exit 31, and the pump 5 is lifted up via the pump lifting wire 35 and taken out of the barrel body 4, thereby making maintenance of the pump 5 easy. When pump 5 is lifted, valve body 1
Since the load on the pump 5 is removed from zero, the valve body 10 is closed by the return spring 14. Therefore, the stored liquid or its vaporized gas will not leak out through the barrel body 4.

To remove the foot valve 6, first rotate the lock lever 19 via the operation wire 22, conversion lever 23, and intermediate link 26 by pulling or pushing the operation rod 29, and then move the tip of the lock lever 19 out of the engagement groove 21. Disconnect and release the lock. Then, the foot valve 6 is connected via the foot valve hanging wire 32.
Lift it up and take it out of the barrel body 4.

In this way, the foot valve 6 can be easily removed from the barrel body 4, and the foot valve 6 can be easily maintained.

When removing the foot valve 6, in order to prevent the vaporized gas in the storage tank 1 from leaking outside through the barrel body 4, remove the foot valve with the lower end of the barrel body 4 immersed in the storage liquid 3. It is desirable to perform a removal operation on the valve 6.

To attach the foot valve 6 and the pump 5, the steps described above may be reversed.

[Effects of the invention] In summary, the present invention provides the following excellent effects.

(1) Since the foot valve is removably installed at the lower end of the barrel body through its internal passage, it is possible to remove the foot valve from the barrel body and take it out of the storage tank while the liquid remains in the storage tank. , maintenance of the foot valve can be easily and quickly performed at any time.

(2) Therefore, the safety and reliability of the pump barrel is improved.

(3) It has a simple structure and is easy to manufacture.
It is inexpensive and can be easily adopted.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the pump barrel according to the present invention, Fig. 2 is a front view of the rotating operation part of the lock lever, Fig. 3 is an enlarged sectional view showing the locking means, and Fig. 4 is A cross-sectional view showing the foot valve in a separated state, and FIG. 5 is a cross-sectional view of a conventional pump barrel. In the figure, 1 is a storage tank, 2 is a roof, 3 is a liquid storage tank, 4 is a barrel body, 5 is a pump, 6 is a foot valve, 8 is a foot valve seat, and 19 is a lock lever (locking means).

Claims (1)

[Scope of utility model registration request] A barrel body is inserted into the liquid storage from the roof of the storage tank, a pump is seated on the lower end of the barrel body so that it can be pulled out from its upper end, and the lower end of the barrel body is released by the sitting load of the pump. In the pump barrel having a foot valve, a foot valve seating portion is formed at the lower end of the barrel body for seating the foot valve so that it can be pulled out from the upper end thereof, and the foot valve is fixed to the foot valve seating portion. A pump barrel characterized by being provided with a locking means for