FI73283B - PUMP STATION - Google Patents

Description

(ΤΤ ^ Ττί NOTICE OF PUBLICATION __ _ _ _ __ • wfk fB] (11) UTLÄQQNINQSSKRIFT 7 3283 (51) Kv.lk.Vlnt.Cl4 E 03 F 5/22, F 0/08 D 13/08

SUOMI FINLAND

(FI) (21) Patent application - Patentansökning 782766 (22) Application date-Ansökningsdag 11. 09.78

National Board of Patents and Registration (23) Start date - Giltighetsdag 11.09.78

Patent- och registerstyrelsen (41) Became public-Biivit offentiig 16.03.79 (44) Date of dispatch and of publication. - 29 05 87

Ansökan utlagd och utl.skriften publicerad ^ '*' '(86) Kv. application - Int. trap (32) (33) (31) Requested privilege-Begärd pnoritet 15.09.77

Sweden-Sweden (SE) 7710322-A

(71) Jula Boats Sweden AB, Förrädsgatan 22, Mariestad, Sweden-Sweden (SE) (72) Rolf Matsson, Mariestad, Claes Westberg, Mariestad, Sweden-Sweden (SE) (7 * 0 Oy Jalo Ant-V / uorinen Ab The present invention relates to a pump station, a known pump station being disclosed, inter alia, in Swedish Patent Application No. 7603577-3. several non-return valves and shut-off valves are connected between the pumps and the pressure line, and these valves are usually located in the control space itself.The non-return valves have a certain tendency to become clogged with sludge and require some maintenance. The shut-off valves, on the other hand, are more or less maintenance-free. when servicing pumps. This is due to the gases emitted by the wastewater. Non-return valves are easier to maintain because they are located in the control room, where ventilation possibilities are better. However, it would be considerably more advantageous if both non-return valves and pumps could be serviced in a large space separate from the pump station. Another disadvantage of the known pump stations is that the routing of the lines becomes extensive and expensive when it is desired to keep both the non-return valves and the shut-off valves in the control space.

__________ τ ~ 73283

According to the above, non-return valves and pumps are serviceable, of which non-return valves are located at the top and pumps at the bottom. This is impractical.

The object of the present invention is to obviate the above-mentioned drawbacks and this is achieved by forming the pump and the associated non-return valve into a single unit which can be easily lifted out of place for maintenance, which is carried out in another space.

This unit can be considered as a "plug-in" unit in the sense that the unit at the pump station can be replaced by a corresponding unit.

According to the invention, control means are required to remove the unit consisting of the pump and the non-return valve. These controls are also needed to reposition the unit.

The unit consisting of a pump and a non-return valve has an outlet with a flat end surface which cooperates with an inlet with a flat end surface, which belongs to the connecting part at the bottom of the pump room and which communicates with the pump room outlet line or pressure line.

The connecting part according to the present invention is arranged so as to have a plurality of inlet openings, the number of which corresponds to the number of units comprising the pump and the non-return valve.

The connecting part has a shut-off valve for each connection to the unit consisting of the pump and the non-return valve, which is controlled from the top. A suitable steering device may be an extended axle with a steering wheel.

According to an embodiment of the invention, the connecting part can be provided with only one valve, which can establish a connection between the discharge line and one or more connected pumps.

Other features of the present invention will be apparent from the following claims.

The present invention will be explained below with reference to the three accompanying figures, in which:

Fig. 1 shows a pump station with units consisting of a pump and a non-return valve, in which these units are in use,

Fig. 2 shows the same pump station as Fig. 1, but in which one unit consisting of a pump and a non-return valve is being removed, and

Fig. 3 shows a pump station in which the pump and the non-return valve have been moved as a unit outside the pump station.

In Figures 1, the lower part of the pump station means each of the two overlapping parts. The upper end of the lower part 1 has a circumferential flange 2 and triangular supports 3 for the flange. A floor 5i is mounted on the circumferential flange and an upper part 5i with a door 6, a light opening 7 and a ventilation pipe 8 is mounted on the floor. The lower part is connected to the pressure line 10. At the bottom of the lower part there are two units 11 and 12, each consisting of a pump and a non-return valve. Unit 11 means 13 pumps and 1 ^ non-return valve. In unit 1? means 15 pumps and 16 non-return valves. The non-return valves 1 and 16 may be a KG non-return valve PN 10 sold by Ahlsell-Ägren and shown in a brochure from September 1976. The connecting part 19 ends outside the lower part 1 in a pipe opening 9 'which is connected to a pressure line 10. The connecting part 19 is provided with support legs 30 the connecting part is placed on the bottom of the lower part 1. As can be seen from the figures, each non-return valve is provided with a flap which prevents flow in the opposite direction. The unit consisting of a pump and a non-return valve is hereinafter referred to as a pump unit. The pump unit has an outlet surrounding the flange 17. The flange 17 and the edge of the outlet together form a flat contact surface which joins and cooperates with the branch line 18 of the connecting part 19. The branch line 18 forms the inlet of the connecting part 19 and has a flat end surface which cooperates with the flat surface of the outlet of the pump unit. The inlet of the branch line 18 is also provided with a flange 20 in the same way as the outlet of the pump unit 11. The pump unit 12 is similarly connected to a branch line 21, which also has a contact flange 22, and the pump unit 12 has a contact flange 23. Each branch line 18 and 21 has a shut-off valve 2k, respectively. 25. The shut-off valve may be a Beta shut-off valve NT k manufactured by Ahlsell & Agren. A shut-off valve of this type is shown in leaflet AÄ-58OGO8. A control shaft 26 is connected to the shut-off valve 2k, which extends to the upper part 2. The shaft 26 has a steering wheel 27 at the upper end.

Each pump unit has a controller 32, 33- Together with the controller 32, there is a Support Arm 3 ^ connected to the pump unit 11. The controller 32 and the Support Arm 3 ^ + control the horizontal position of the pump unit 11. This unit is then provided with guide fingers 36 for laterally controlling the pump unit 11. The pump unit 12 is also provided with corresponding guide fingers 37- Each pump unit 11 and 12 has its own hoisting rope 38 resp.

39 * It should be apparent that the length of the guides may be different, provided that the principle of operation presented below is feasible. Their upper ends may be at the level of the upper surface of the floor k.

The device shown works as follows. Assume that the pump units 11 and 12 are in the position shown in Figure 1. When the pump unit 12 is to be serviced, it only has to be lifted by means of a rope 39. During the first lifting stage, the pump unit is guided laterally by means of flat contact surfaces of the outlet of the pipe unit 12 and the inlet of the branch line 21.

The pump unit can then move sideways and vertically - Γ "73283 the controller 33 controls its movements. When the pump unit 12 is raised to control mode, the pump unit can be transported to a workshop for maintenance and replaced with a pump unit of the same type When the pump unit approaches branch line 21, the control fingers 37 operate so that the flat end surface of the pump unit outlet is parallel to the end surface of the inlet of branch line 21. By bringing the two flat surfaces into contact with each other a completely satisfactory sealing of the branch line Both branch lines can be opened and closed by valves 2b and 25 using the control shaft 26 by means of the steering wheel 27 and the steering shaft 28 by the steering wheel 29. The pump unit can also be controlled laterally as it moves up and down by other types of control means, e.g. by guiding the guides with guide grooves and the support arms of the pump unit with inwardly directed pins or projections cooperating with the grooves.

Because both the shut-off valve and the non-return valve are located next to the corresponding pump, the pulling of the lines is considerably lower compared to known pump stations where the valve system is at the top.

In addition, the advantage of locating the outlet of the pumping station in the vicinity of its base must be taken into account, since the connection to the pressure line cooperating with it becomes considerably simpler.

The present invention provides a pump unit which can be easily lifted out for maintenance and also easily replaced by a replacement pump unit, whereby all maintenance operations performed on this type of pump unit can be carried out in suitable premises. In this way, it is avoided that the pump station is not used for maintenance purposes for which it is not suitable.

It is obvious that the upper part 5 and the base b can be replaced by a deck, in which case, according to Fig. 1, the height of the parts placed in the control room must, of course, be limited.

Claims (9)

A pumping station consisting of two superposed compartments (1 and 5) separated from each other by means of a partition wall (4), wherein the upper compartment (5) is an operating compartment and the lower compartment (1) is a collection container for liquid. may, preferably wastewater, of one or more pumps (13 and 15) in said lower space, which are connected to an outlet pipe (10) located outside the pump station via each valve arrangement, where each valve arrangement can be a check valve (14 and 16), respectively. and / or by a shut-off valve (24 and 25, respectively), characterized in that the drain line (10) inside the lower space (1) is connected to a transverse connecting part (19) within said lower space (1), which connector part (19) has detachable connection (17, 20 and 22, 23) to one or more pump units (11 and 12), each containing a check valve (14 and 16) and a pump and therein in each unit ( 11 and 12) pump and check valve (14 and 16) are arranged in transverse direction 1, and that control means (32-35) are arranged for controlled movement of each pump unit (11 and 12), partly from connection to the connecting part (19) via an exposed passage in said partition (4) to the operating room (5) and partly for connection to the connecting part (19) from the operating room via said passage. Pump station according to claim 1, characterized in that each control means (32, 34 and 33, 35) is constituted by a guide (32 and 32, respectively) arranged in the down space (1) and in the operating room (5). 33) cooperating with a slide (32 and 33) movable along the guide (34 and 35, respectively) connected to the associated pump unit (11 and 12, respectively). Pump station according to claim 2, characterized in that means (36 and 37) are arranged for controlling a pump unit (11 and 12) for connection to the connection part (19). 4. Pump station according to claim 3, characterized in that