Sealing and cooling system of dredge pump

Abstract

The utility model discloses a sludge pump sealing and cooling system, which relates to the technical field of slurry pump mechanical sealing and cooling equipment, and comprises a slurry pump mechanical seal, a drainage pipe, a first cooling water supply pipeline, a water pump, water storage equipment, a second cooling water pipeline and a first valve, and the slurry pump mechanical seal is provided with a water inlet and a water outlet; the other end of the drainage pipe is communicated with the drainage ditch; the first cooling water supply pipeline is communicated with the water inlet, and the other end is communicated with the first cooling water supply pipeline; the water storage equipment is used for storing cooling water and is higher than the slurry pump mechanical seal; one end of the second cooling water pipe is connected and communicated with the water storage equipment, and the other end of the second cooling water pipe is communicated with the water inlet so as to guide cooling water in the water storage equipment into the slurry pump mechanical seal under the action of gravity; the water supply device for the slurry pump is simple in structure, can effectively provide continuous water supply for the slurry pump, and guarantees normal operation of equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slurry pump mechanical seal cooling equipment, particularly relates to a sludge pump sealing cooling system. BACKGROUND

[0002] The slurry pump is widely applied to the mining, coal, electric power, metallurgy, nonferrous metal, power plant ash removal, municipal engineering, pipeline transportation, petroleum chemical industry, salt mining engineering, building and the like, and is used for conveying corrosive slurry, slurry containing high concentration solid particles and the like.

[0003] In the sewage treatment system, the slurry pump is widely applied and is important equipment for conveying sewage and sludge. With the iteration and update of the slurry pump, the packing of the slurry pump adopts mechanical sealing. The cooling of the mechanical sealing of the slurry pump is usually for taking away the heat generated by the friction of the sealing end face, so as to prevent the overheating failure of the sealing, and also plays the role of lubrication and protection of the sealing. The mechanical sealing cooling system is very important for the normal operation of the slurry pump. In the sludge system, the water quality of the medium conveyed by the slurry pump is poor, so it is difficult to achieve self-cooling, and the purpose of providing cooling water supply for the operation of the slurry pump cannot be achieved. Therefore, the normal operation of the slurry pump needs a separate cooling water pipeline or cooling water supply device, so as to ensure the water quality of the cooling water and the purpose of the mechanical sealing cooling of the slurry pump.

[0004] In the normal production operation, if the mechanical sealing cooling system or the water supply pipeline of the slurry pump fails, and the point inspection personnel cannot find it in time, and the cooling water is not transported in time, the friction temperature of the sealing end face will be increased, and the mechanical sealing end face will be damaged after long-time operation, so as to cause the leakage of the conveyed medium and affect the normal operation of the equipment. In addition, if the mechanical sealing cooling system of the slurry pump fails, the slurry pump needs to be stopped, and the maintenance personnel will process the defects of the cooling system, so as to affect the normal production operation. UTILITY MODEL CONTENT

[0005] The utility model discloses a kind of sludge pump sealing cooling systems, to solve the problems existing in the prior art described above, simple structure, effectively can provide the device of uninterrupted water supply for slurry pump, ensure the normal operation of equipment.

[0006] To achieve the above object, the utility model provides the following scheme:

[0007] The utility model provides a kind of sludge pump sealing cooling system, comprising: slurry pump mechanical seal, drain pipe, first cooling water supply pipeline, water pump, water storage equipment, second cooling water pipeline and first valve, the slurry pump mechanical seal is provided with water inlet and water outlet;The one end of the drain pipe is communicated with the water outlet, and the other end is communicated with drain ditch;The first cooling water supply pipeline is communicated with the water inlet;The water inlet end of the water pump is communicated with water source, and the other end is communicated with the first cooling water supply pipeline;The water storage equipment is used to store cooling water, and the height of the water storage equipment is higher than the slurry pump mechanical seal;The one end of the second cooling water pipe is connected with water storage equipment and is communicated, and the other end is communicated with the water inlet to guide the cooling water in the water storage equipment into the slurry pump mechanical seal under the action of gravity;The first valve is arranged on the second cooling water pipeline.

[0008] Preferably, it further includes a cooling water supply main pipe and a second valve, one end of the cooling water supply main pipe is communicated with the water inlet, and the other end is communicated with the first cooling water supply pipeline and the second cooling water supply pipeline, and the second valve is arranged on the first cooling water supply pipeline.

[0009] Preferably, the first valve is a first check valve, and the first check valve is used to prevent the water in the second cooling water supply pipeline from flowing to the water storage equipment.

[0010] Preferably, the second valve is a second check valve, and the second check valve is used to prevent the water in the first cooling water supply pipeline from flowing to the water pump.

[0011] Preferably, the water storage equipment is a water tank.

[0012] Preferably, the height of the bottom of the water tank is higher than the slurry pump mechanical seal by not less than 1 meter.

[0013] Preferably, the volume of the water tank is not less than 0.5m 3 .

[0014] Preferably, it further includes a water level monitoring device and an alarm device, the water level monitoring device is used to monitor the water level in the water tank, the alarm device is signal connected with the water level monitoring device, when the water level in the water tank is lower than the design water level, the water level monitoring device transmits a signal to the alarm device, and the alarm device issues an alarm.

[0015] The utility model has achieved the following technical effects compared with the prior art:

[0016] The utility model provides a kind of sludge pump sealing cooling system, by slurry pump mechanical seal, drain pipe, first cooling water supply pipeline, water pump, the water storage equipment of the height higher than slurry pump mechanical seal, second cooling water pipeline and the first valve of being set on second cooling water pipeline etc. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0018] Figure 1 The structural diagram of the sludge pump sealing cooling system provided by the utility model is shown in the figure.

[0019] In the figure: 1, slurry pump mechanical seal;2, drain pipe;3, first cooling water supply pipeline;4, water pump;5, water storage equipment;6, second cooling water pipeline;7, first valve;8, cooling water supply main;9, second valve. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described in the embodiments of the utility model in combination with the drawings, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] The utility model aims at providing a kind of sludge pump sealing cooling system to solve the problems in the prior art described above, simple structure, effectively can provide the device of uninterrupted water supply for slurry pump, ensure normal operation of equipment.

[0022] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is further described in detail in combination with the drawings and specific embodiments.

[0023] The utility model provides a kind of sludge pump sealing cooling system, as Figure 1As shown, the system comprises: a slurry pump mechanical seal 1, a drain pipe 2, a first cooling water supply pipeline 3, a water pump 4, a water storage device 5, a second cooling water pipeline 6 and a first valve 7, the slurry pump mechanical seal 1 is provided with a water inlet and a water outlet; one end of the drain pipe 2 is communicated with the water outlet, and the other end is communicated with a drain ditch; the first cooling water supply pipeline 3 is communicated with the water inlet; the water inlet end of the water pump 4 is communicated with a water source, and the other end is communicated with the first cooling water supply pipeline 3; the water storage device 5 is used for storing cooling water, and the height of the water storage device 5 is higher than that of the slurry pump mechanical seal 1; one end of the second cooling water pipeline is connected with the water storage device 5 and communicated, and the other end is communicated with the water inlet to guide the cooling water in the water storage device 5 into the slurry pump mechanical seal 1 under the action of gravity; the first valve 7 is arranged on the second cooling water pipeline 6, by arranging the water storage device 5 and the height of the water storage device 5 being higher than that of the slurry pump mechanical seal 1, when the water pump 4 works normally, closing the first valve 7 can provide cooling water for the slurry pump mechanical seal 1 by the water pump 4 through the first cooling water supply pipeline 3; when the water pump 4 fails or other abnormal conditions occur, opening the first valve 7, the height difference of the water storage device 5 makes the cooling water provide uninterrupted water supply for the slurry pump mechanical seal 1 under the action of gravity through the second cooling water pipeline 6, which ensures the normal operation of the slurry pump, reduces the risk of mechanical seal damage, reduces the equipment maintenance frequency and reduces the labor and spare parts costs.

[0024] In a preferred embodiment, the sludge pump sealing cooling system further comprises a cooling water supply main pipe 8 and a second valve 9, one end of the cooling water supply main pipe 8 is communicated with the water inlet, and the other end is communicated with the first cooling water supply pipeline and the second cooling water supply pipeline, and the second valve 9 is arranged on the first cooling water supply pipeline 3, and the cooling water supply main pipe 8 can more conveniently integrate the water flow of the first cooling water supply pipeline 3 and the second cooling water supply pipeline, so that the water flow distribution is more reasonable. The second valve 9 can control the opening and closing of the first cooling water supply pipeline 3 when needed, which is convenient for adjusting and maintaining the system.

[0025] In a preferred embodiment, the first valve 7 is a first one-way valve, and the first one-way valve is used to prevent the water of the second cooling water supply pipeline from flowing to the water storage device 5, and the first one-way valve can prevent the cooling water from flowing to the water storage device 5 from the second cooling water pipeline 6 when the water pump 4 provides power to provide cooling water for the slurry pump mechanical seal 1. By arranging the first one-way valve, the cooling water can be prevented from flowing to the water storage device 5 when the water pump 4 provides cooling water, and the cooling water cannot flow into the water storage device 5 in the reverse direction, which ensures the stability and reliability of the water pump 4 water supply.

[0026] In a preferred embodiment, the second valve 9 is a second one-way valve, which is used to prevent water in the first cooling water supply pipeline 3 from flowing towards the water pump 4, thereby preventing the water in the first cooling water supply pipeline 3 from flowing reversely towards the water pump 4 in the event of a failure or other abnormality of the water pump 4, ensuring the stability of the water flow direction when the water pump 4 is working, and improving the reliability of the system.

[0027] In a preferred embodiment, the water storage device 5 is a water tank, which is low in cost and easy to obtain and install, and has a relatively stable structure and can reliably store cooling water.

[0028] In a preferred embodiment, the height of the bottom of the water tank is not less than 1 meter higher than the mechanical seal 1 of the slurry pump, thereby ensuring sufficient gravitational potential difference, so that the cooling water can flow smoothly into the mechanical seal 1 of the slurry pump under the action of gravity, and the effect of gravity water supply is ensured.

[0029] In a preferred embodiment, the volume of the water tank is not less than 0.5m 3 A larger water tank volume can store sufficient cooling water, and can provide uninterrupted water supply to the mechanical seal 1 of the slurry pump for a longer period of time in the event of a water pump 4 failure or the like, thereby improving the stability and reliability of the system.

[0030] In a preferred embodiment, the sludge pump sealing cooling system further comprises a water level monitoring device and an alarm device, the water level monitoring device is used to monitor the water level in the water tank, and the alarm device is signal connected with the water level monitoring device, when the water level in the water tank is lower than the designed water level, the water level monitoring device transmits a signal to the alarm device, and the alarm device issues an alarm, by setting the water level monitoring device and the alarm device, the situation that the water level in the water tank is too low can be found in time, so that the staff can take corresponding measures such as supplementing cooling water, and the gravity water supply failure caused by water shortage of the water tank is avoided, thereby further improving the reliability and safety of the system.

[0031] The utility model also provides a kind of use method of the above sludge pump sealing cooling system, comprising the following steps:

[0032] Under normal circumstances, start water pump 4, and water pump 4 is pumped from water source, and the inlet of the mechanical seal 1 of the slurry pump is provided with cooling water by the first cooling water supply pipeline 3.Cooling water is discharged from the water outlet after flowing through the mechanical seal 1 of the slurry pump, and flows into the drainage ditch through the drain pipe 2;

[0033] When the water pump 4 fails or other abnormal conditions occur, open the first valve 7, and since the height of the water storage device 5 is higher than the mechanical seal 1 of the slurry pump, the cooling water in the water storage device 5 flows into the inlet of the mechanical seal 1 of the slurry pump by gravity, to provide uninterrupted water supply, and ensure the normal operation of the slurry pump.

[0034] I. Normal working state

[0035] Start the water pump 4, the water pump 4 draws water from the water source, the water flows through the first cooling water supply pipe 3 and the second valve 9 (the second one-way valve can prevent the water from flowing back to the water pump 4) into the cooling water supply main pipe 8, and then flows into the water inlet of the slurry pump mechanical seal 1 from the cooling water supply main pipe 8 to provide cooling water for the slurry pump mechanical seal 1. The first one-way valve can prevent the cooling water from flowing from the second cooling water supply pipe to the water storage device 5.

[0036] After the cooling water flows through the slurry pump mechanical seal 1, it is discharged from the water outlet and flows into the drainage ditch through the drain pipe 2.

[0037] II. Water pump 4 failure or abnormal state

[0038] When the water pump 4 fails or other abnormal conditions occur, due to the height of the water storage device 5 (such as a water tank) being higher than the slurry pump mechanical seal 1, the cooling water in the water storage device 5 flows into the water inlet of the slurry pump mechanical seal 1 through the second cooling water pipe 6 and the first valve 7 (the first one-way valve can prevent the water from flowing back to the water storage device 5) to provide uninterrupted water supply for it, ensuring the normal operation of the slurry pump.

[0039] III. Daily maintenance

[0040] The water level in the water tank is monitored in real time by the water level monitoring device. When the water level in the water tank is lower than the designed water level, the water level monitoring device transmits a signal to the alarm device, and the alarm device issues an alarm to remind the staff to replenish the cooling water in time.

[0041] Periodically check and maintain each component in the system, including the water pump 4, valves, pipes, etc., to ensure normal operation, reduce the risk of mechanical seal damage, reduce equipment maintenance frequency, and reduce labor and spare parts costs.

[0042] The specific examples in the utility model are used to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core idea of the utility model. Meanwhile, for those skilled in the art, according to the idea of the utility model, the specific implementation methods and application scope will be changed. In conclusion, the content of the specification should not be understood as a limitation of the utility model.

Claims

1. A sludge pump seal cooling system characterized by: The application relates to a cooling water supply system for a slurry pump mechanical seal. The application comprises: a slurry pump mechanical seal provided with an inlet and an outlet; a drain pipe, one end of which is communicated with the outlet and the other end of which is communicated with a drain ditch; a first cooling water supply pipe communicated with the inlet; a water pump, one end of which is communicated with a water source and the other end of which is communicated with the first cooling water supply pipe; a water storage device for storing cooling water, the height of which is higher than that of the slurry pump mechanical seal; a second cooling water pipe, one end of which is connected with the water storage device and the other end of which is communicated with the inlet to guide the cooling water in the water storage device into the slurry pump mechanical seal under the action of gravity; and 2. The seal cooling system for a sludge pump according to claim 1, characterized in that: a first valve arranged on the second cooling water pipe.

3. The seal cooling system for a sludge pump of claim 2, wherein: The application further comprises a cooling water supply main pipe and a second valve, one end of the cooling water supply main pipe is communicated with the inlet and the other end of the cooling water supply main pipe is communicated with the first cooling water supply pipe and the second cooling water supply pipe, and the second valve is arranged on the first cooling water supply pipe.

4. The seal cooling system for a sludge pump of claim 3, wherein: The first valve is a first one-way valve for preventing the water in the second cooling water supply pipe from flowing to the water storage device.

5. The seal cooling system for a sludge pump of claim 1, wherein: The second valve is a second one-way valve for preventing the water in the first cooling water supply pipe from flowing to the water pump.

6. The seal cooling system for a sludge pump of claim 5, wherein: The water storage device is a water tank.

7. The seal cooling system for a sludge pump according to claim 6, characterized in that: The volume of the water tank is not less than 0.5m 3 .

8. The seal cooling system for a sludge pump of claim 7, wherein: The height of the bottom of the water tank is not less than 1m higher than that of the slurry pump mechanical seal. The application further comprises a water level monitoring device for monitoring the water level in the water tank and an alarm device, the water level monitoring device is signal connected with the alarm device, when the water level in the water tank is lower than the designed water level, the water level monitoring device transmits a signal to the alarm device, and the alarm device gives an alarm.

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