Centrifugal pump shaft seal water emission reduction device

Abstract

The utility model discloses a centrifugal pump shaft seal water emission reduction device, and belongs to the technical field of shaft seal water circulation. Comprising a centrifugal pump body, an output pipe and a backflow pipe, the outer end of the centrifugal pump body is provided with a first pipeline and a second pipeline, the two ends of the output pipe are provided with a water pump and a flow dividing assembly respectively, one end of the backflow pipe is provided with a cooling assembly, and the flow dividing assembly is located between the output pipe and the backflow pipe; the flow dividing assembly comprises a flow dividing frame, the top end of the flow dividing frame is fixedly connected with a plurality of backflow connectors distributed at equal intervals, used shaft seal water flowing out through a second pipeline is converged into the cooling assembly through the flow dividing assembly, and after being cooled in the cooling assembly, the shaft seal water is converged into the flow dividing assembly again through cooperation of an input pipe, a water pump and an output pipe. And then the shaft seal water flows into the mechanical sealing device on the centrifugal pump body again through the pipeline I, so that the shaft seal water can be recycled for multiple times, the utilization rate of the shaft seal water can be improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of shaft seal water circulation, in particular to a centrifugal pump shaft seal water emission reduction device. BACKGROUND

[0002] The centrifugal pump mainly pumps out liquid by a rotating shaft driving an impeller, and a mechanical seal device is used between the pump body and the pump shaft to prevent the leakage of the medium in the pump. The shaft seal water of the centrifugal pump refers to the water flow used for cooling, lubricating and sealing the mechanical seal components of the centrifugal pump. During the operation of the centrifugal pump, friction and heat are generated between the pump shaft and the mechanical seal components. In order to maintain the effectiveness of the seal and prolong the service life of the shaft seal, cooling and lubrication are required through the shaft seal water.

[0003] The patent with the publication number CN216867071U discloses a shaft seal water collecting device. The water blocking structure can effectively prevent water at the packing from entering the bearing box, and simultaneously guide the shaft seal water to drop in the water collecting box, thereby preventing the bearing water from dropping on the ground and causing safety hazards.

[0004] Since the static seal ring and the dynamic seal ring need to be in relative friction during the operation of the mechanical seal in the centrifugal pump, shaft seal water needs to be continuously introduced from the outside to cool and lubricate. Therefore, a large amount of shaft seal water is used during the operation of the centrifugal pump. The device in the above scheme can only collect the used shaft seal water, and cannot recycle it. Therefore, a large amount of water resources will be wasted in the long run.

[0005] Therefore, it is necessary to provide a centrifugal pump shaft seal water emission reduction device to solve the above problems.

[0006] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, it can contain information that does not constitute prior art. CONTENT OF THE UTILITY MODEL

[0007] Based on the above problems existing in the prior art, the present application solves the problem of providing a centrifugal pump shaft seal water emission reduction device. The pipe one is an input pipe of the shaft seal water, and the pipe two is an output pipe. The used shaft seal water flowing out through the pipe two is collected in the cooling assembly through the shunt assembly. After being cooled in the cooling assembly, the shaft seal water is re-collected in the shunt assembly through the input pipe, the water pump and the output pipe, and then re-enters the mechanical seal device on the centrifugal pump body through the pipe one. The shaft seal water can be recycled multiple times, thereby improving the utilization rate and reducing the cost.

[0008] The technical scheme adopted by the application to solve its technical problems is: a centrifugal pump shaft seal water emission reduction device, comprising a centrifugal pump body, an output pipe and a return pipe, the outer end of the centrifugal pump body is respectively provided with a pipeline one and a pipeline two, the two ends of the output pipe are respectively provided with a water pump and a shunt assembly, the return pipe is provided with a cooling assembly at one end, the shunt assembly is located between the output pipe and the return pipe, an input pipe is arranged between the cooling assembly and the water pump, the shunt assembly comprises a shunt frame, a plurality of return interfaces are fixedly connected to the top end of the shunt frame in equidistant distribution, a plurality of input interfaces are fixedly connected to the top end of the shunt frame in equidistant distribution, the plurality of return interfaces are in communication with each other, the plurality of input interfaces are in communication with each other, the cooling assembly comprises a shell one and a shell two, the top end of the shell one is fixedly connected with the shell two, a plurality of cooling pipes are arranged in the shell one, the plurality of cooling pipes are arranged in U shape

[0009] Further, the output end of the water pump is fixedly connected with the output pipe away from the shunt assembly, and the input end of the water pump is fixedly connected with the input pipe away from the cooling assembly, the pipeline two is made of transparent rubber.

[0010] Further, the outer end of the input pipe is respectively provided with a liquid replacement pipe one and a liquid replacement pipe two, the liquid replacement valve is arranged at the connection position of the liquid replacement pipe one and the liquid replacement pipe two.

[0011] Further, the top end of the return interface is provided with a connecting pipe one, the top end of the input interface is provided with a connecting pipe two, the control valve is arranged at the outer end of the return interface and the input interface, one of the connecting pipe one is connected with the pipeline two, and one of the connecting pipe two is connected with the pipeline one.

[0012] Further, the two sides of the shunt frame are fixedly connected with the output pipe and the return pipe, the plurality of input interfaces are in communication with the output pipe, and the plurality of return interfaces are in communication with the return pipe.

[0013] Further, the inner side wall of the shell two is fixedly connected with a partition plate, the partition plate divides the shell two into a liquid inlet chamber and a liquid outlet chamber.

[0014] Further, the mounting plate is fixedly connected between the shell one and the shell two, the plurality of cooling pipes penetrate through the mounting plate, and the liquid inlet chamber and the liquid outlet chamber are in communication through the cooling pipes.

[0015] Further, the outer end of the shell two is respectively provided with an output port one and an input port one, the outer end of the shell one is respectively provided with an output port two and an input port two, the return pipe is connected with the input port one, and the input pipe is connected with the output port one.

[0016] The beneficial effects of the application are:

[0017] The centrifugal pump shaft seal water reduction device provided by the application, a pipeline one is an input pipeline of shaft seal water, a pipeline two is an output pipeline, the used shaft seal water flows out through the pipeline two, is collected into the cooling assembly through the shunt assembly, is cooled in the cooling assembly, and is then re-collected into the shunt assembly through the input pipeline, the water pump and the output pipeline, and then re-flows into the mechanical seal device on the centrifugal pump body through the pipeline one, so that the shaft seal water can be recycled multiple times, thereby improving the utilization rate and reducing the cost.

[0018] The centrifugal pump shaft seal water reduction device provided by the application, liquid exchange pipelines one and two are arranged at the outer end of the input pipeline, the liquid exchange pipeline one is a liquid outlet pipeline, and the liquid exchange pipeline two is a liquid inlet pipeline. When the shaft seal water needs to be replaced after long-time use or the liquid is mixed with the shaft seal water due to damage of the mechanical seal in the centrifugal pump body, the shaft seal water can be discharged through the liquid exchange pipeline one and new shaft seal water can be supplemented through the liquid exchange pipeline two by controlling the valves on the liquid exchange pipelines one and two, so that the shaft seal water can be conveniently replaced.

[0019] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings accompanying the specification of the application form a part of the application and serve to provide further understanding of the application, the exemplary embodiments of the application and their description serve to explain the application and do not constitute an improper limitation of the application. In the drawings:

[0021] Figure 1 It is a first overall structure schematic diagram;

[0022] Figure 2 It is a second overall structure schematic diagram;

[0023] Figure 3 It is a shunt assembly structure schematic diagram;

[0024] Figure 4 It is a cooling assembly structure schematic diagram;

[0025] Figure 5 It is a cooling assembly explosion structure schematic diagram.

[0026] In the drawings, various reference signs represent:

[0027] 1, centrifugal pump body;

[0028] 2, shunt assembly; 21, shunt frame; 22, connecting pipeline one; 23, backflow interface; 24, input interface; 25, control valve; 26, connecting pipeline two;

[0029] 3. Cooling components; 31. Housing 1; 32. Housing 2; 33. Cooling pipes; 34. Mounting plate; 35. Partition plate;

[0030] 4. Output pipe; 5. Pipe 1; 6. Pipe 2; 7. Return pipe; 8. Water pump; 9. Input pipe;

[0031] 10. Fluid changing pipe one; 11. Fluid changing pipe two; 12. Fluid changing valve. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0034] like Figures 1-5 As shown, this application provides a centrifugal pump shaft seal water reduction device, including a centrifugal pump body 1, an output pipe 4, and a return pipe 7. The centrifugal pump body 1 is respectively equipped with a first pipe 5 and a second pipe 6. The output pipe 4 is respectively equipped with a water pump 8 and a flow divider 2 at both ends. A cooling component 3 is provided at one end of the return pipe 7. The flow divider 2 is located between the output pipe 4 and the return pipe 7. An input pipe 9 is provided between the cooling component 3 and the water pump 8. The flow divider 2 includes a flow divider frame 21. The top of the flow divider frame 21 is fixedly connected to a plurality of equally spaced return ports 23, and the top of the flow divider frame 21 is fixedly connected to a plurality of equally spaced input ports 24. The plurality of return ports 23 are interconnected, and the plurality of input ports 24 are interconnected. The cooling component 3 includes a first housing 31 and a second housing 32. The top of the first housing 31 is fixedly connected to the second housing 32. A plurality of cooling pipes 33 are installed inside the first housing 31. The plurality of cooling pipes 33 are arranged in a U-shape.

[0035] The output end of the water pump 8 is fixedly connected to the end of the output pipe 4 away from the diversion component 2, and the inlet and outlet ends of the water pump 8 are fixedly connected to the end of the input pipe 9 away from the cooling component 3. The second pipe 6 is made of transparent rubber.

[0036] The outer end of the input pipe 9 is equipped with a first liquid replacement pipe 10 and a second liquid replacement pipe 11, and a liquid replacement valve 12 is installed at the connection between the first liquid replacement pipe 10 and the second liquid replacement pipe 11 and the input pipe 9.

[0037] The device in the scheme is mainly used for collecting and recycling the shaft seal water used in the centrifugal pump body 1. The centrifugal pump body 1 mainly pumps out the liquid by driving the impeller through the rotating shaft. The mechanical seal device is used between the pump body and the pump shaft to prevent the leakage of the medium in the pump. The shaft seal water of the centrifugal pump refers to the water flow used for cooling, lubricating and sealing the mechanical seal components of the centrifugal pump. Usually, it is deionized pure water. The pipeline one 5 and the pipeline two 6 are installed at the shell of the mechanical seal device on the centrifugal pump body 1. The pipeline one 5 is the input pipeline of the shaft seal water, and the pipeline two 6 is the output pipeline. The used shaft seal water flows out through the pipeline two 6 and then flows into the cooling assembly 3 through the shunt assembly 2. The shunt assembly 2 is a shunt device and can be connected to multiple centrifugal pump bodies 1 at the same time. After being cooled in the cooling assembly 3, the shaft seal water is pumped by the water pump 8 and then flows into the shunt assembly 2 through the input pipe 9 and the output pipe 4. Then the shaft seal water flows into the mechanical seal device on the centrifugal pump body 1 through the pipeline one 5 again, so that the shaft seal water can be recycled multiple times, thereby improving the utilization rate and reducing the cost.

[0038] The pipeline two 6 is made of transparent rubber pipe, so that the color of the shaft seal water can be easily observed. In the normal state, the shaft seal water is colorless and transparent. When the mechanical seal is damaged, the liquid in the pump will flow out and mix with the shaft seal water, thereby changing the color of the shaft seal water. By observing the color of the shaft seal water through the pipeline two 6, it can be judged whether a fault occurs. Since the shunt assembly 2 can supply shaft seal water to multiple centrifugal pump bodies 1 at the same time, the color of the shaft seal water after multiple cycles will be mixed uniformly, so it is not easy to judge which centrifugal pump body 1 leaks. At this time, the liquid exchange valve 12 can be rotated to cut off the internal passage of the input pipe 9 by the control of the liquid exchange valve 12, so that the input pipe 9 is in communication with the liquid exchange pipe one 10 and the liquid exchange pipe two 11 respectively. The liquid exchange pipe one 10 is the liquid outlet pipe, and the liquid exchange pipe two 11 is the liquid inlet pipe. One end of the liquid exchange pipe two 11 is connected to the outside new shaft seal water. At this time, the water pump 8 will suck the new shaft seal water, and the old shaft seal water will be discharged through the liquid exchange pipe one 10 for collection and treatment. At this time, only by observing whether the shaft seal water flowing out of the pipeline two 6 is discolored, it can be judged which centrifugal pump body 1 has a damaged seal device, and the old shaft seal water is replaced, thereby facilitating maintenance. When the shaft seal water needs to be replaced actively after a long time of use, the same method can be used for replacement.

[0039] As shown in Figure 3 The top end of each of the plurality of return interfaces 23 is provided with a connecting pipe one 22, and the top end of each of the plurality of input interfaces 24 is provided with a connecting pipe two 26. The outer end of each of the return interfaces 23 and the input interfaces 24 is provided with a control valve 25. One of the connecting pipe ones 22 is connected to the pipeline two 6, and one of the connecting pipe twos 26 is connected to the pipeline one 5.

[0040] The shunt frame 21 is fixedly connected with the output pipe 4 and the return pipe 7 respectively, the plurality of input interfaces 24 are communicated with the output pipe 4, and the plurality of return interfaces 23 are communicated with the return pipe 7.

[0041] The output pipe 4 and the return pipe 7 are connected at the two sides of the shunt frame 21 respectively, the plurality of return interfaces 23 and the input interfaces 24 are installed at the top of the shunt frame 21 respectively, the number of the return interfaces 23 and the input interfaces 24 is one-to-one, the connecting pipe one 22 and the connecting pipe two 26 are installed at the top of the return interfaces 23 and the input interfaces 24 respectively, the connecting pipe one 22 is connected with the pipe two 6, and the connecting pipe two 26 is connected with the pipe one 5, and the control valve 25 is installed on each return interface 23 and input interface 24, so that the shaft seal water can be supplied to the plurality of centrifugal pump bodies 1 at the same time, and the integration is improved.

[0042] As shown in Figure 4 and Figure 5 The inner side wall of the shell two 32 is fixedly connected with the partition plate 35, and the partition plate 35 divides the shell two 32 into the liquid inlet chamber and the liquid outlet chamber.

[0043] The mounting plate 34 is fixedly connected between the shell one 31 and the shell two 32, and the plurality of cooling pipes 33 penetrate through the mounting plate 34, and the liquid inlet chamber and the liquid outlet chamber are communicated through the cooling pipes 33.

[0044] The output port one and the input port one are arranged at the outer end of the shell two 32 respectively, the output port two and the input port two are arranged at the outer end of the shell one 31 respectively, the return pipe 7 is connected with the input port one, and the input pipe 9 is connected with the output port one.

[0045] The shaft seal water can be cooled when the centrifugal pump body 1 is running, so the recovered shaft seal water needs to be cooled before being used again, the output port one and the input port one arranged on the shell two 32 are connected with the input pipe 9 and the return pipe 7 respectively, the shell two 32 is divided into the liquid inlet chamber and the liquid outlet chamber, the output port two and the input port two arranged on the shell one 31 are used for making the cooling water flow in and out, and the shell one 31 is filled with the cooling water for heat exchange when being used, the shaft seal water first enters the liquid inlet chamber through the return pipe 7, and then flows into the liquid outlet chamber through the cooling pipe 33, because the cooling pipe 33 is arranged in the U shape, the shaft seal water in the cooling pipe 33 exchanges heat with the cooling water in the shell one 31 to be cooled, and then is recombined into the shunt assembly 2 through the input pipe 9 and the output pipe 4, and then flows into the mechanical sealing device on the centrifugal pump body 1 through the pipe one 5 again, so that the shaft seal water can be recycled.

[0046] The cooling water in the shell 31 can use reclaimed water, which mainly refers to municipal sewage or domestic sewage treated to reach a certain water quality standard, and is non-drinking water that can be reused within a certain range to achieve the purpose of cost saving.

[0047] Working principle:

[0048] The pipeline 5 is an input pipeline of shaft seal water, and the pipeline 6 is an output pipeline. The used shaft seal water flows out through the pipeline 6, and then flows into the cooling assembly 3 through the shunt assembly 2. The shunt assembly 2 is a shunt device. The top end of the shunt frame 21 is respectively provided with a plurality of return interfaces 23 and input interfaces 24. The connecting pipe 22 is connected with the pipeline 6, and the connecting pipe 26 is connected with the pipeline 5, so that the shaft seal water can be supplied to multiple sets of centrifugal pump bodies 1 at the same time. The shaft seal water collected in the cooling assembly 3 will be cooled. The shaft seal water will first enter the liquid inlet chamber through the return pipe 7, and then flow into the liquid outlet chamber through the cooling pipe 33. In this process, the shaft seal water in the cooling pipe 33 will exchange heat with the cooling water in the shell 31 to cool it. Through the pumping of the water pump 8, the shaft seal water will be re-collected in the shunt assembly 2 through the input pipe 9 and the output pipe 4, and then re-flow into the mechanical seal device on the centrifugal pump body 1 through the pipeline 5, so that the shaft seal water can be recycled multiple times.

[0049] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A centrifugal pump shaft seal water abatement device comprising a centrifugal pump body (1), an output pipe (4) and a return pipe (7), characterized in that: The centrifugal pump body (1) is respectively installed with pipeline one (5) and pipeline two (6), both ends of the output pipe (4) are respectively provided with a water pump (8) and a shunt component (2), one end of the return pipe (7) is provided with a cooling component (3), the shunt component (2) is located between the output pipe (4) and the return pipe (7), and the cooling component (3) and the water pump (8) are provided with an input pipe (9) between them; The shunt component (2) comprises a shunt frame (21), a plurality of equally distributed return interfaces (23) are fixedly connected to the top end of the shunt frame (21), and a plurality of equally distributed input interfaces (24) are fixedly connected to the top end of the shunt frame (21), the plurality of return interfaces (23) are all interconnected, and the plurality of input interfaces (24) are all interconnected; The cooling component (3) comprises a shell one (31) and a shell two (32), the top end of the shell one (31) is fixedly connected with the shell two (32), and a plurality of cooling pipes (33) are installed in the shell one (31), and the plurality of cooling pipes (33) are all arranged in a U shape.

2. A centrifugal pump shaft seal water abatement device according to claim 1, wherein: The output end of the water pump (8) is fixedly connected with the one end of the output pipe (4) away from the shunt component (2), and the input and output ends of the water pump (8) are fixedly connected with the one end of the input pipe (9) away from the cooling component (3), and the pipeline two (6) is made of transparent rubber.

3. A centrifugal pump shaft seal water abatement device according to claim 1, wherein: The input pipe (9) is respectively installed with liquid replacement pipe one (10) and liquid replacement pipe two (11), and the liquid replacement valve (12) is installed at the connection between the liquid replacement pipe one (10) and the liquid replacement pipe two (11) and the input pipe (9).

4. A centrifugal pump shaft seal water abatement device according to claim 1, characterized in that: The top end of the plurality of return interfaces (23) is provided with a connecting pipe one (22), the top end of the plurality of input interfaces (24) is provided with a connecting pipe two (26), the outer end of the return interface (23) and the input interface (24) is provided with a control valve (25), one of the connecting pipe one (22) is connected with the pipeline two (6), and one of the connecting pipe two (26) is connected with the pipeline one (5).

5. A centrifugal pump shaft seal water abatement device according to claim 4, wherein: The shunt frame (21) is fixedly connected with the output pipe (4) and the return pipe (7) on both sides, the plurality of input interfaces (24) are all connected with the output pipe (4), and the plurality of return interfaces (23) are all connected with the return pipe (7).

6. A centrifugal pump shaft seal water abatement device according to claim 1, wherein: The inner side wall of the shell two (32) is fixedly connected with a partition plate (35), and the partition plate (35) divides the shell two (32) into a liquid inlet chamber and a liquid outlet chamber.

7. A centrifugal pump shaft seal water abatement device according to claim 6, wherein: The mounting plate (34) is fixedly connected between the shell one (31) and the shell two (32), and the plurality of cooling pipes (33) all penetrate the mounting plate (34), and the liquid inlet chamber and the liquid outlet chamber are connected through the cooling pipes (33).

8. A centrifugal pump shaft seal water abatement device according to claim 7, characterized in that: The outer end of the shell two (32) is provided with an output port one and an input port one, the outer end of the shell one (31) is provided with an output port two and an input port two, the return pipe (7) is connected with the input port one, and the input pipe (9) is connected with the output port one.

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