Sludge pump sealing and cooling system and using method

Abstract

The invention discloses a sludge pump sealing and cooling system and a using method, and relates to the technical field of slurry pump mechanical sealing and cooling equipment.The sludge pump sealing and cooling system 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 invention relates to the technical field of mechanical seal cooling equipment for slurry pumps, and in particular to a seal cooling system for a sludge pump and a use method thereof. Background Art

[0002] Slurry pumps are widely used in mining, coal, electricity, metallurgy, non-ferrous metals, power plant ash removal, municipal engineering, pipeline transportation, petrochemicals, salt mining engineering, construction and other industries to transport corrosive slurry, slurry containing high concentrations of solid particles, etc. In these application scenarios, the cooling system is crucial to ensure the reliable operation of the slurry pump.

[0003] In sewage treatment systems, slurry pumps are widely used and are important equipment for transporting sewage and sludge. With the iteration and update of slurry pumps, mechanical seals are used for slurry pump packing. The cooling of the mechanical seal of a slurry pump is usually to take away the heat generated by the friction of the seal end face to prevent the seal from overheating and failure. It also plays a role in lubricating and protecting the seal. The mechanical seal cooling system is essential for the normal operation of the slurry pump. In the sludge system, the water quality of the slurry pump conveying medium is poor, so it is difficult to achieve self-cooling, and the purpose of providing cooling water supply for the slurry pump itself cannot be achieved. Therefore, the normal operation of the slurry pump requires a separate cooling water pipeline or cooling water supply device to ensure the quality of the cooling water and the purpose of cooling the mechanical seal of the slurry pump.

[0004] In normal production operation, if the mechanical seal cooling system or water supply pipeline of the slurry pump fails, if the inspection personnel cannot find it in time and fail to deliver cooling water in time, it will cause the friction temperature of the seal end face to rise. Long-term operation will damage the mechanical seal end face, resulting in leakage of the conveying medium and affecting the normal operation of the equipment. In addition, if the mechanical seal cooling system of the slurry pump fails, the slurry pump needs to be stopped, and the maintenance personnel will deal with the cooling system defects, which will affect the normal production operation. Summary of the invention

[0005] The purpose of the present invention is to provide a mud pump sealing cooling system and a method of use to solve the problems existing in the above-mentioned prior art. The system has a simple structure and can effectively provide an uninterrupted water supply device for the slurry pump to ensure the normal operation of the equipment.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a mud pump seal cooling system, comprising: a slurry pump mechanical seal, a drain pipe, a first cooling water supply pipeline, a water pump, a water storage device, a second cooling water pipeline and a first valve, wherein the slurry pump mechanical seal is provided with a water inlet and a water outlet; one end of the drain pipe is connected to the water outlet, and the other end is connected to the drain ditch; the first cooling water supply pipeline is connected to the water inlet; the water inlet end of the water pump is connected to a water source, and the other end is connected to the first cooling water supply pipeline; the water storage device is used to store cooling water, and the height of the water storage device is higher than the slurry pump mechanical seal; one end of the second cooling water pipe is connected and communicated with the water storage device, and the other end is connected to the water inlet so as to introduce the cooling water in the water storage device 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 also includes a cooling water supply main pipe and a second valve, one end of the cooling water supply main pipe is connected to the water inlet, and the other end is connected to 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.

[0009] Preferably, the first valve is a first one-way valve, and the first one-way valve is used to prevent water in the second cooling water supply pipeline from flowing toward the water storage device.

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

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

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

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

[0014] Preferably, it also includes a water level monitoring device and an alarm device, wherein the water level monitoring device is used to monitor the water level in the water tank, and the alarm device is signal-connected to 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 sounds an alarm.

[0015] The present invention also provides a method for using the above-mentioned mud pump seal cooling system, comprising the following steps:

[0016] Under normal circumstances, the water pump is started, and the water pump draws water from the water source, and provides cooling water to the water inlet of the mechanical seal of the slurry pump through the first cooling water supply pipeline. After the cooling water flows through the mechanical seal of the slurry pump, it is discharged from the water outlet and flows into the drainage ditch through the drainage pipe;

[0017] When the water pump fails or encounters other abnormal conditions, the first valve is opened. Since the height of the water storage device is higher than the mechanical seal of the slurry pump, the cooling water in the water storage device flows into the water inlet of the mechanical seal of the slurry pump through the second cooling water pipe by gravity, providing it with uninterrupted water supply to ensure the normal operation of the slurry pump.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The present invention provides a mud pump seal cooling system and a use method. The system is composed of a slurry pump mechanical seal, a drain pipe, a first cooling water supply pipeline, a water pump, a water storage device with a height higher than the mechanical seal of the slurry pump, a second cooling water pipeline and a first valve arranged on the second cooling water pipeline. Under normal circumstances, the water pump provides cooling water to the slurry pump mechanical seal through the first cooling water supply pipeline. When the water pump fails or other abnormal conditions occur, the first valve is opened, and the height difference of the water storage device is used to allow the cooling water to provide uninterrupted water supply to the slurry pump mechanical seal through the second cooling water pipeline under the action of gravity, thereby ensuring the normal operation of the slurry pump and reducing the risk of damage to the mechanical seal, reducing the frequency of equipment maintenance and reducing labor and spare parts costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the mud pump seal cooling system provided by the present invention;

[0022] In the figure: 1. Mechanical seal of slurry pump; 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 pipe; 9. Second valve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a mud pump seal cooling system and a method of use to solve the problems existing in the above-mentioned prior art. The system has a simple structure and can effectively provide an uninterrupted water supply device for the slurry pump to ensure the normal operation of the equipment.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] The present invention provides a mud pump seal cooling system, such as Figure 1 As shown, it includes: 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 connected to the water outlet, and the other end is connected to the drain ditch; the first cooling water supply pipeline 3 is connected to the water inlet; the water inlet end of the water pump 4 is connected to the water source, and the other end is connected to the first cooling water supply pipeline 3; the water storage device 5 is used to store cooling water, and the height of the water storage device 5 is higher than the slurry pump mechanical seal 1; one end of the second cooling water pipe is connected and communicated with the water storage device 5, and the other end is connected to the water inlet to transfer the cooling water in the water storage device 5 The cooling water is introduced into the mechanical seal 1 of the slurry pump under the action of gravity; the first valve 7 is arranged on the second cooling water pipeline 6, and a water storage device 5 is arranged and its height is higher than the mechanical seal 1 of the slurry pump. When the water pump 4 is working normally, the first valve 7 is closed and the water pump 4 can provide cooling water to the mechanical seal 1 of the slurry pump through the first cooling water supply pipeline 3; when the water pump 4 fails or other abnormal conditions occur, the first valve 7 is opened, and the height difference of the water storage device 5 is used to make the cooling water provide uninterrupted water supply to the mechanical seal 1 of the slurry pump through the second cooling water pipeline 6 under the action of gravity, so as to ensure the normal operation of the slurry pump, and at the same time reduce the risk of damage to the mechanical seal, reduce the frequency of equipment maintenance, and reduce labor and spare parts costs.

[0027] In a preferred embodiment, the mud pump seal cooling system also includes a cooling water supply main pipe 8 and a second valve 9. One end of the cooling water supply main pipe 8 is connected to the water inlet, and the other end is connected to the first cooling water supply pipe and the second cooling water supply pipe. The second valve 9 is arranged in the first cooling water supply pipe 3. The arrangement of the cooling water supply main pipe 8 can more conveniently integrate the water flow of the first cooling water supply pipe 3 and the second cooling water supply pipe, making the water flow distribution more reasonable. The arrangement of the second valve 9 can control the on-off of the first cooling water supply pipe 3 when necessary, which is convenient for adjusting and maintaining the system.

[0028] In a preferred embodiment, the first valve 7 is a first one-way valve, which is used to prevent water in the second cooling water supply pipe from flowing toward the water storage equipment 5. When the water pump 4 provides power to provide cooling water for the slurry pump mechanical seal 1, the first one-way valve can prevent cooling water from flowing from the second cooling water pipe 6 to the water storage equipment 5. By setting the first one-way valve, when the water pump 4 provides cooling water, the cooling water can be prevented from flowing to the water storage equipment 5, and the cooling water will not flow back into the water storage equipment 5, thereby ensuring the stability and reliability of the water supply of the water pump 4.

[0029] 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 pipe 3 from flowing toward the water pump 4. The second one-way valve can prevent the water in the first cooling water supply pipe 3 from flowing back to the water pump 4 when the water pump 4 fails or other abnormal conditions occur, thereby ensuring the stability of the water flow direction when the water pump 4 is working and improving the reliability of the system.

[0030] In a preferred embodiment, the water storage device 5 is a water tank. Using a water tank as the water storage device 5 is low-cost and easy to obtain and install. At the same time, the structure of the water tank is relatively stable and can reliably store cooling water.

[0031] In a preferred embodiment, the height of the bottom of the water tank is not less than 1 meter higher than the slurry pump mechanical seal 1, ensuring sufficient gravitational potential energy difference so that the cooling water can smoothly flow into the slurry pump mechanical seal 1 under the action of gravity, ensuring the effect of gravity water supply.

[0032] In a preferred embodiment, the volume of the water tank is not less than 0.5m 3 The larger water tank volume can store sufficient cooling water, and in the event of a water pump 4 failure, can provide the slurry pump mechanical seal 1 with uninterrupted water supply for a longer period of time, thereby improving the stability and reliability of the system.

[0033] In a preferred embodiment, the mud pump seal cooling system also 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 connected to the water level monitoring device signal. When the water level in the water tank is lower than the designed water level, the water level monitoring device transmits the signal to the alarm device, and the alarm device sounds an alarm. By setting up the water level monitoring device and the alarm device, it is possible to promptly detect the situation where the water level in the water tank is too low, so that the staff can take corresponding measures, such as replenishing cooling water, etc., to avoid the failure of gravity water supply due to lack of water in the water tank, thereby further improving the reliability and safety of the system.

[0034] The present invention also provides a method for using the above mud pump seal cooling system, comprising the following steps:

[0035] Under normal circumstances, the water pump 4 is started, and the water pump 4 draws water from the water source to provide cooling water to the water inlet of the slurry pump mechanical seal 1 through the first cooling water supply pipeline 3. After flowing through the slurry pump mechanical seal 1, the cooling water is discharged from the water outlet and flows into the drainage ditch through the drainage pipe 2;

[0036] When the water pump 4 fails or encounters other abnormal conditions, the first valve 7 is opened. 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 water inlet of the mechanical seal 1 of the slurry pump through the second cooling water pipe 6 by gravity, providing it with uninterrupted water supply to ensure the normal operation of the slurry pump.

[0037] 1. Normal working status

[0038] Start the water pump 4, which 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 water from flowing back to the water pump 4) into the cooling water supply main pipe 8, and then flows from the cooling water supply main pipe 8 into the water inlet of the slurry pump mechanical seal 1 to provide cooling water for the slurry pump mechanical seal 1. The first one-way valve can prevent cooling water from flowing from the second cooling water supply pipe to the water storage device 5.

[0039] After passing through the mechanical seal 1 of the slurry pump, the cooling water is discharged from the outlet and flows into the drainage ditch through the drainage pipe 2.

[0040] 2. Water pump 4 is faulty or in abnormal condition

[0041] When the water pump 4 fails or encounters other abnormal conditions, since the height of the water storage device 5 (such as a water tank) is 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 water from flowing back to the water storage device 5) by gravity, providing it with uninterrupted water supply and ensuring the normal operation of the slurry pump.

[0042] 3. Daily maintenance

[0043] The water level monitoring device is used to monitor the water level in the water tank in real time. When the water level in the water tank is lower than the designed water level, the water level monitoring equipment transmits a signal to the alarm device, and the alarm device sounds an alarm to remind the staff to replenish cooling water in time.

[0044] Regularly inspect and maintain each component in the system, including water pumps, valves, pipes, etc., to ensure their normal operation, reduce the risk of mechanical seal damage, reduce the frequency of equipment maintenance, and reduce labor and spare parts costs.

[0045] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A mud pump seal cooling system, characterized in that: include: A slurry pump mechanical seal, wherein the slurry pump mechanical seal is provided with a water inlet and a water outlet; A drainage pipe, one end of which is connected to the water outlet, and the other end of which is connected to the drainage ditch; a first cooling water supply pipeline, the first cooling water supply pipeline being in communication with the water inlet; a water pump, wherein a water inlet end of the water pump is connected to a water source, and the other end of the water pump is connected to the first cooling water supply pipeline; A water storage device, the water storage device is used to store cooling water, and the height of the water storage device is higher than the mechanical seal of the slurry pump; a second cooling water pipe, one end of which is connected to and communicated with the water storage device, and the other end of which is communicated with the water inlet so as to guide the cooling water in the water storage device into the mechanical seal of the slurry pump under the action of gravity; as well as A first valve is arranged on the second cooling water pipeline.

2. The mud pump seal cooling system according to claim 1, characterized in that: It also includes a cooling water supply main pipe and a second valve, one end of the cooling water supply main pipe is connected to the water inlet, and the other end is connected to 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.

3. The mud pump seal cooling system according to claim 2, characterized in that: The first valve is a first one-way valve, and the first one-way valve is used to prevent the water in the second cooling water supply pipeline from flowing toward the water storage device.

4. The mud pump seal cooling system according to claim 3, characterized in that: The second valve is a second one-way valve, and the second one-way valve is used to prevent the water in the first cooling water supply pipeline from flowing toward the water pump.

5. The mud pump seal cooling system according to claim 1, characterized in that: The water storage device is a water tank.

6. The mud pump seal cooling system according to claim 5, characterized in that: The height of the bottom of the water tank is not less than 1 meter higher than the mechanical seal of the slurry pump.

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

8. The mud pump seal cooling system according to claim 7, characterized in that: It also 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 connected to the water level monitoring device by signal. 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 sounds an alarm.

9. A method for using the mud pump seal cooling system according to any one of claims 1 to 8, characterized in that: The following steps are involved: Under normal circumstances, the water pump is started, and the water pump draws water from the water source, and provides cooling water to the water inlet of the mechanical seal of the slurry pump through the first cooling water supply pipeline. After the cooling water flows through the mechanical seal of the slurry pump, it is discharged from the water outlet and flows into the drainage ditch through the drainage pipe; When the water pump fails or encounters other abnormal conditions, the first valve is opened. Since the height of the water storage device is higher than the mechanical seal of the slurry pump, the cooling water in the water storage device flows into the water inlet of the mechanical seal of the slurry pump through the second cooling water pipe by gravity, providing it with uninterrupted water supply to ensure the normal operation of the slurry pump.

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