CN218493828U

CN218493828U - Self-suction type water delivery system

Info

Publication number: CN218493828U
Application number: CN202222138165.8U
Authority: CN
Inventors: 吴春裕; 邹胜; 黎镇江; 谢坚; 植美煌
Original assignee: Foshan Hengyi Environmental Protection Building Material Co ltd
Current assignee: Foshan Hengyi Environmental Protection Building Material Co ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2023-02-17
Anticipated expiration: 2032-08-15

Abstract

The utility model discloses a self-suction type water delivery system, which comprises a plurality of groups of water delivery devices arranged on the top surface of a pool, wherein each group of water delivery device comprises a centrifugal pump, a water replenishing valve, an exhaust valve and a water suction pipe which are arranged on the top surface of the pool, wherein the centrifugal pump is communicated with the inner cavity of a water storage tank through a pre-pump water inlet pipe, and the pre-pump water inlet pipe is positioned at the lower part of the side wall of the water storage tank; a pneumatic butterfly valve is also arranged between the centrifugal pump and the pump front water inlet pipe; the water replenishing valve and the exhaust valve are arranged at the top of the water storage tank, wherein the water replenishing valve is connected with a water replenishing device; the upper end of the water suction pipe is arranged at the upper part of the side wall of the water storage tank and is communicated with the inner cavity of the water storage tank; the lower end of the water tank extends into the bottom of the water tank. The utility model discloses a can guarantee that the centrifugal pump can draw water in succession from inhaling formula water delivery system to this improves water delivery efficiency.

Description

Self-suction water delivery system

Technical Field

The utility model relates to a water conveying system, concretely relates to from inhaling formula water delivery system.

Background

In the production of autoclaved aerated concrete, a great amount of high-temperature condensed water is discharged from an autoclave when a semi-finished product is steamed, and the temperature of the condensed water is about 90 ℃. To facilitate collection and reuse of the condensed water discharged from the autoclave, the sump is usually built below the base of the autoclave. When the still kettle works, condensed water and a small amount of steam automatically flow into the underground water collecting tank through the pipeline. For this purpose, referring to fig. 1, a plurality of groups of horizontal centrifugal pump systems are installed on the top surface of the pond, each group of horizontal centrifugal pump systems adopts a working centrifugal pump 4 and a standby centrifugal pump 4, and condensed water is conveyed to each water consumption point of the whole plant through the centrifugal pumps 4.

The centrifugal pump system is arranged on the top surface of the water pool, a water suction pipe 3 of the centrifugal pump 4 extends downwards to the bottom of the water pool, and the tail end of the water suction pipe 3 is provided with a check valve 2. The check valve 2 is used for sealing the water from the suction inlet of the centrifugal pump 4 to the pipe at the lower end of the water suction pipe 3 from leaking, and preventing the centrifugal pump 4 from being pumped out and not sucking water when being started. Because the condensed water discharged from the still kettle contains a small amount of silicon and calcium particles, and the water temperature is higher, after a period of time, the check valve 2 at the tail end of the underwater water suction pipe 3 is easy to deposit and scale, so that the check valve 2 is blocked and can not fall back, and the sealing effect can not be achieved, and the water suction pipe 3 is not water in the pipeline on the water level of the water tank, so that the centrifugal pump 4 is pumped and can not suck water when being started. However, the general solution is: before the centrifugal pump 4 is started, water is added into the water suction pipe 3 through the water supplementing valve 6, when the density of the check valve 2 is not large, the water supplementing amount is large enough, the water supplementing valve 6 can be closed after the water suction pipe 3 is filled with the water, and the centrifugal pump is started immediately, so that water can be pumped normally, but most of the time, the check valve 2 is blocked and loses the sealing effect, the water supplemented through the water supplementing valve 6 is leaked quickly, so that negative pressure cannot be formed in the water suction pipe 3 when the centrifugal pump 4 is started, the centrifugal pump 4 cannot absorb the water at all, and further the centrifugal pump system cannot supply water normally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a from inhaling formula water delivery system, from inhaling the formula water delivery system and can guaranteeing that the centrifugal pump can draw water in succession.

The utility model provides a technical scheme of above-mentioned technical problem is:

a self-suction water delivery system comprises a plurality of groups of water delivery devices arranged on the top surface of a water pool, wherein each group of water delivery devices comprises a centrifugal pump, a water replenishing valve, an exhaust valve and a water suction pipe which are arranged on the top surface of the water pool, the centrifugal pump is communicated with an inner cavity of a water storage tank through a pump front water inlet pipe, and the pump front water inlet pipe is positioned at the lower part of the side wall of the water storage tank; a pneumatic butterfly valve is also arranged between the centrifugal pump and the pump front water inlet pipe; the water replenishing valve and the exhaust valve are arranged at the top of the water storage tank, wherein the water replenishing valve is connected with a water replenishing device; the upper end of the water suction pipe is arranged at the upper part of the side wall of the water storage tank and is communicated with the inner cavity of the water storage tank; the lower end of the water tank extends into the bottom of the water tank.

Preferably, the water conveying devices are two groups, and outlets of centrifugal pumps in the two groups of water conveying devices are connected to the main pipeline through branch pipelines.

Preferably, the bottom of the water suction pipe is connected with the grid.

Preferably, the diameter of water storage tank is D, and the difference in height between the import of inlet tube and the export of the pipe upper end that absorbs water before the pump is H, and the diameter that absorbs water the pipe is D, and the difference in height between the export of the pipe upper end that absorbs water and the import of lower extreme is H, and then the volume V of water storage tank and the relation of the pipe that absorbs water are:

V＝π(d/2) ² h≥2π(D/2) ² H。

preferably, a signal feedback device is arranged on the pneumatic butterfly valve, and the signal feedback device comprises a pressure switch arranged between a valve driving device on a valve rod of the pneumatic butterfly valve and an electromagnetic valve, wherein an inlet of the electromagnetic valve is communicated with a compressed air main pipe through a first gas pipeline, and an outlet of the electromagnetic valve is communicated with the valve driving device through a second gas pipeline; the number of the second gas pipelines is two, the number of the pressure switches is also two, and the two pressure switches are respectively arranged on the two groups of the second gas pipelines; the valve driving device is used for driving the valve rod to rotate so as to open or close the valve.

Preferably, the pressure switch is communicated with the second gas pipeline through a three-way pipe.

Preferably, pressure switches in the signal feedback devices in the multiple groups of water conveying devices are arranged in the sealed box.

Preferably, the two groups of water conveying devices share one group of water storage tank, or the two groups of water storage tanks respectively adopt one group of water storage tank.

The utility model discloses compare and have following beneficial effect:

1. the utility model discloses a self-priming water delivery system passes through water replenishing valve to the interior water injection of liquid storage pot, rises the liquid level to the high position of the discharge valve on liquid storage pot upper portion after, closes water replenishing valve and discharge valve, later opens centrifugal pump and pneumatic butterfly valve, will pour into the liquid in the water storage pot into and take out gradually, in the inside vacuum that forms of water storage pot, utilizes the water in vacuum principle with the pond to inhale the water storage pot to make the centrifugal pump can draw water in succession.

2. The utility model discloses a from inhaling formula water delivery system has high-efficient vacuum pumping and supplementary liquid ability. The water in the water tank is conveyed and passes through the centrifugal pumps under the vacuum negative pressure condition, and no water pump is arranged between the centrifugal pumps, so that the service life of equipment is greatly prolonged, the efficient continuous operation of the centrifugal pumps is facilitated, and the water pump has the advantages of convenience, safety and small maintenance amount.

Drawings

Fig. 1 is a schematic view showing a structure of a conventional centrifugal pump system.

FIG. 2 is a schematic structural diagram of the self-priming water delivery system of the present invention,

FIG. 3 is a schematic view of the top of the water storage tank.

Fig. 4 is a schematic perspective view of the signal feedback device.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Example 1

Referring to fig. 2-3, the self-priming water delivery system of the present invention comprises a plurality of sets of water delivery devices disposed on the top surface of the pool, wherein each set of water delivery device comprises a centrifugal pump, a water replenishing valve, an exhaust valve, and a water suction pipe disposed on the top surface of the pool, wherein the centrifugal pump is communicated with the inner cavity of the water storage tank through a water inlet pipe before the pump, and a pneumatic butterfly valve is disposed at the inlet of the centrifugal pump; the front pump water inlet pipe is positioned at the lower part of the side wall of the water storage tank; the water replenishing valve and the exhaust valve are arranged at the top of the water storage tank, wherein the water replenishing valve is connected with a water replenishing device; the upper end of the water suction pipe is arranged at the upper part of the side wall of the water storage tank and is communicated with the inner cavity of the water storage tank; the lower end of the water tank extends into the bottom of the water tank and is connected with the grid.

In this embodiment, the diameter of water storage tank is D, and the difference in height between the import of inlet tube and the export of the pipe upper end that absorbs water before the pump is H, and the diameter of the pipe that absorbs water is D, and the difference in height between the export of the pipe upper end that absorbs water and the import of lower extreme is H, and then the volume V of water storage tank is with the relation of the pipe that absorbs water:

V＝π(d/2) ² h≥2π(D/2) ² H。

in this embodiment, water conveyor is two sets of, and two sets of water conveyor use one and be equipped with to when later stage overhauls the utility model discloses a from inhaling formula water delivery system stop work not.

Referring to fig. 2-3, the working principle of the self-suction water delivery system of the present invention is:

when the centrifugal pump is in initial operation, a pneumatic butterfly valve corresponding to the centrifugal pump to be started is opened, an exhaust ball valve at the top of the water storage tank is opened, a water replenishing valve is opened, water is added into the water storage tank, and air is continuously discharged from the exhaust ball valve along with the rise of the water level in the tank; when no air flow blows out from the steam discharging ball valve, the water level in the water storage tank is indicated to rise to the outlet of the water suction pipe on the tank. At the moment, the steam exhaust ball valve and the water replenishing gate valve are closed, and the centrifugal pump is started to pump water. Along with the reduction of the water level in the water storage tank, the vacuum degree in the water storage tank is increased, and the water in the underground water pool flows into the water storage tank under the atmospheric pressure, so that the centrifugal pump can continuously pump water; when the standby pump needs to be stopped or replaced, the centrifugal pump is stopped firstly, and then the corresponding pneumatic butterfly valve is closed. When the system operates again, the corresponding pneumatic butterfly valve of the centrifugal pump to be started is opened, and then the centrifugal pump is started to operate.

Example 2

Referring to fig. 4, the present embodiment is different from embodiment 1 in that:

the utility model also comprises a signal feedback device, which comprises a pressure switch 14 arranged between an electromagnetic valve 13 arranged on a valve rod 18 of the pneumatic butterfly valve 5 and a valve driving device 16, wherein the electromagnetic valve 13 is connected with a control system, the inlet of the electromagnetic valve 13 is communicated with a compressed air main pipe 10 through a first gas pipeline 11, and the first gas pipeline 11 is provided with a stop valve 12; the outlets of the electromagnetic valves 13 are communicated with the valve driving device 16 through second gas pipelines 15, wherein the second gas pipelines 15 are two groups, and the two groups of second gas pipelines 15 are respectively connected in different areas or cavities of a cylinder in the valve driving device 16; correspondingly, the pressure switches 14 are two groups; the pressure switch 14 is arranged on the second gas pipeline 15, and the pressure switch 14 is communicated with the second gas pipeline 15 through a three-way pipe; the valve driving device 16 is used for driving the valve rod 18 to rotate so as to open or close the valve.

Referring to fig. 4, the working principle of the signal feedback device for the pneumatic butterfly valve of the present invention is:

the gas from the compressed air manifold 10 enters the electromagnetic valve 13 through the three-way pipe, the electromagnetic valve 13 is connected with an opening/closing channel in the electromagnetic valve 13 after receiving an opening/closing signal sent by the control system, the compressed air enters the cylinder in the valve driving device 16 through the electromagnetic valve 13, and a piston in the cylinder is pushed to move to rotate the valve rod 18, so that the valve is driven to be opened or closed; meanwhile, compressed air also enters the pressure switch 14 representing the open/close state of the valve, and the open/close state of the valve is confirmed after 5 seconds of setting and receiving a signal fed back by the pressure switch 14 in a control system due to certain compression characteristics of the gas, so that the open/close position of the valve is ensured to be consistent with a state signal fed back by the pressure switch 14.

In the above process, because two groups of second gas pipelines 15 are arranged between the electromagnetic valve 13 and the valve driving device 16, and each group of gas pipelines is provided with a pressure switch 14, because the two groups of second gas pipelines 15 are respectively connected with different areas or different chambers in the cylinder in the valve driving device 16, the on-off of the gas in the two groups of second gas pipelines 15 can be controlled through the electromagnetic valve 13, so as to control the rotation direction of the piston and the valve rod 18, and thus to control the opening and closing of the valve; the pressure switch 14 can detect the gas pressure in the corresponding second gas pipeline 15, so as to determine whether the valve is opened or closed, and feed back the detection information.

In addition, the pressure switch 14 in the signal feedback device of two groups of pneumatic butterfly valves 5 in two water conveying devices can be centralized in a closed box body (such as a sealing box 17) for installation, so that the working environment of the pressure switch 14 is improved, the reliable operation of equipment is ensured, the service life is prolonged, and the maintenance is convenient. Meanwhile, when the device is maintained and replaced, an electrician is not required to detach the wire and remove the letter-returning device, so that the overhaul time is shortened, and the labor cost is reduced.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A self-suction water delivery system is characterized by comprising a plurality of groups of water delivery devices arranged on the top surface of a water pool, wherein each group of water delivery devices comprises a centrifugal pump, a water replenishing valve, an exhaust valve and a water suction pipe which are arranged on the top surface of the water pool, the centrifugal pump is communicated with an inner cavity of a water storage tank through a water inlet pipe before a pump, and the water inlet pipe before the pump is positioned at the lower part of the side wall of the water storage tank; a pneumatic butterfly valve is also arranged between the centrifugal pump and the pump front water inlet pipe; the water replenishing valve and the exhaust valve are arranged at the top of the water storage tank, wherein the water replenishing valve is connected with a water replenishing device; the upper end of the water suction pipe is arranged on the upper part of the side wall of the water storage tank and is communicated with the inner cavity of the water storage tank; the lower end extends into the bottom of the water tank.

2. The self-priming water delivery system according to claim 1, wherein the water delivery devices are two groups, and outlets of centrifugal pumps in the two groups of water delivery devices are connected to the main pipeline through branch pipelines.

3. The self-priming water delivery system according to claim 1, wherein the bottom of the suction tube is connected to a grill.

4. The self-priming water delivery system according to claim 1, wherein the diameter of the water storage tank is D, the height difference between the inlet of the water inlet pipe before the pump and the outlet at the upper end of the suction pipe is H, the diameter of the suction pipe is D, and the height difference between the outlet at the upper end of the suction pipe and the inlet at the lower end of the suction pipe is H, then the relation between the volume V of the water storage tank and the suction pipe is:

V=π（d/2）²h≥2π（D/2）²H。

5. the self-priming water delivery system according to claim 1, wherein the pneumatic butterfly valve is provided with a signal feedback device, the signal feedback device comprises a pressure switch arranged between a valve driving device on a valve rod of the pneumatic butterfly valve and a solenoid valve, wherein an inlet of the solenoid valve is communicated with the compressed air main pipe through a first gas pipeline, and an outlet of the solenoid valve is communicated with the valve driving device through a second gas pipeline; the number of the second gas pipelines is two, the number of the pressure switches is also two, and the two pressure switches are respectively arranged on the two groups of the second gas pipelines; the valve driving device is used for driving the valve rod to rotate so as to open or close the valve.

6. The self-priming water delivery system according to claim 5, wherein the pressure switch is in communication with the second gas conduit via a tee.

7. The self-priming water delivery system according to claim 5, wherein the pressure switches of the signal feedback devices of the water delivery devices are all arranged in a sealed box.

8. The self-priming water delivery system according to claim 1, wherein the two water delivery devices share one water storage tank, or the two water storage tanks respectively adopt one water storage tank.