Cooling water circulation type centrifugal pump

Abstract

The invention provides a cooling water circulation type centrifugal pump, belongs to the technical field of centrifugal pumps, and solves the problems that an existing centrifugal pump is high in use temperature, lacks a water circulation type cooling function, cannot clean the interior of the pump and the like. Comprising a base, a vertical frame, a filtering mechanism, a control box, a centrifugal pump mechanism, an engine and a cooling heat exchanger are arranged above the base, a mixing pump is arranged on the vertical frame, a silencer is arranged on the engine, and one end of a driving shaft of the engine is in transmission connection with the centrifugal pump mechanism. The other end of the driving shaft of the engine is in transmission connection with the silencer and the cooling heat exchanger, a sealing cooling cover is arranged on the outer side of the centrifugal pump mechanism, the mixing pump is connected with the centrifugal pump mechanism and the filtering mechanism through pipelines, and the cooling heat exchanger is connected with the centrifugal pump mechanism, the sealing cooling cover and the filtering mechanism through pipelines. And the sealing cooling cover is connected with the filtering mechanism through a pipeline. Water circulation type cooling and cleaning in the pump can be stably and effectively carried out.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of centrifugal pumps, and relates to a cooling type centrifugal pump, in particular to a cooling water circulation type centrifugal pump. BACKGROUND

[0002] The centrifugal pump refers to a pump for conveying liquid by centrifugal force generated by rotation of an impeller. The centrifugal pump has various forms such as a vertical type, a horizontal type, a single stage, a multi-stage, a single suction, and a double suction.

[0003] A series of technical bottlenecks that the traditional centrifugal pump system has faced for a long time have not been completely solved under extreme working conditions and continuous high load operation scenarios: Low heat dissipation efficiency: under the working condition of high ambient temperature or continuous operation, the heat dissipation capacity of the traditional air-cooled or simple water-cooled system approaches the limit, the efficiency drops sharply, the engine and the pump body are easily overheated, which leads to shutdown and even equipment damage, and seriously restricts the production efficiency and reliability of the equipment.

[0004] Lack of cooling medium management: the ordinary cooling system only pays attention to "heat dissipation" and ignores the "health management" of the cooling liquid. The cooling liquid will deteriorate, breed scale, produce corrosion and mix with wear particles after long-term use. These impurities will block the flow channel, reduce the heat exchange efficiency, and aggravate the wear of the internal parts of the pump (especially the bearings and mechanical seals), and become the main cause of system failure.

[0005] Insufficient system integration and reliability: the traditional solution is a simple splicing of functional components, lacking systematic integration. The interfaces of various subsystems (power, pumping, cooling, filtering) are numerous, the leakage points are many, the pressure fluctuation is difficult to control, the overall reliability is poor, and the maintenance is inconvenient.

[0006] Therefore, the application provides a cooling water circulation type centrifugal pump. SUMMARY

[0007] The application aims at the above problems existing in the prior art, and provides a cooling water circulation type centrifugal pump, which solves the technical problem of how to realize stable and effective water circulation cooling and cleaning in the centrifugal pump.

[0008] The application can be realized by the following technical scheme: The utility model provides a kind of cooling water circulation formula centrifugal pump, including pedestal, pedestal is equipped with stand, filtering mechanism and control box and centrifugal pump mechanism, engine and cooling heat exchanger are sequentially arranged from front to back above, filtering mechanism and control box are located in the left side of engine, stand is located in the right side of centrifugal pump mechanism, stand is equipped with mixed pump, silencer is equipped on engine, the one end of the driving shaft of engine is connected between transmission, the other end of the driving shaft of engine is respectively connected between transmission and cooling heat exchanger, the outside of centrifugal pump mechanism is equipped with sealed cooling cover, mixed pump is connected between respectively through pipeline and centrifugal pump mechanism and filtering mechanism, cooling heat exchanger is connected between respectively through pipeline and centrifugal pump mechanism and sealed cooling cover and filtering mechanism, sealed cooling cover is connected between through pipeline and filtering mechanism.

[0009] The working principle of the utility model: the one end of the driving shaft of engine drives centrifugal pump mechanism, realizes the fluid delivery of centrifugal pump mechanism; When needing cooling and cleaning, centrifugal pump mechanism closes passageway, mixed pump and filtering mechanism cooperate to form negative pressure, material deposited in centrifugal pump mechanism is extracted and injected into filtering mechanism to carry out solid-liquid filtration separation and liquid purification, clean liquid is obtained and injected into cooling heat exchanger, the other end of the driving shaft of engine cooperates with cooling heat exchanger to obtain low-temperature liquid, which is injected into centrifugal pump mechanism to cool and lower the temperature of centrifugal pump mechanism, and also has certain cleaning effect; At this time, filtering mechanism can work synchronously, filtering mechanism extracts cooling liquid deposited in sealed cooling cover and carries out solid-liquid filtration separation and liquid purification, clean cooling liquid is obtained and injected into cooling heat exchanger to obtain low-temperature liquid, which is returned to the inside of sealed cooling cover to cool and lower the temperature of centrifugal pump mechanism from outside; Cooling and lowering temperature of centrifugal pump mechanism from inside and outside are formed; When centrifugal pump mechanism works normally, mixed pump is closed, filtering mechanism, cooling heat exchanger and sealed cooling cover cooperate to cool and lower the temperature of working centrifugal pump mechanism from outside; Silencer is installed on the exhaust port of engine, the other end of the driving shaft of engine drives silencer to work, which is used to reduce noise generated when engine exhaust is discharged, and meets environmental protection and operation environment requirements; Control box is the brain of system, which is internally provided with electrical control system, used for starting / stopping engine, monitoring operating parameters, alarming and protecting, etc., to realize automatic operation and safe operation.

[0010] The lower end of the engine is fixed with a plurality of supports, the supports are fixed in the middle part of the upper end of the pedestal, and a transmission belt pulley pair is arranged between the other end of the driving shaft of the engine, the linkage shaft of the engine and the exhaust cylinder fan shaft of the silencer.

[0011] With the above structure, the support firmly installs the engine in the center position of the base, ensuring the stability during operation, one end of the driving shaft of the engine drives the centrifugal pump mechanism to complete the fluid pumping task; the other end of the driving shaft of the engine transmits power to the linkage shaft through the transmission belt pulley pair, the linkage shaft drives the cooling heat exchanger to generate forced air flow to dissipate heat for the circulating cooling liquid; at the same time, the transmission belt pulley pair also transmits power from the driving shaft to the exhaust cylinder fan shaft of the silencer to ensure that the engine exhaust gas can smoothly pass through the silencer and be discharged.

[0012] The centrifugal pump mechanism comprises a pressure stabilizing support one, a pressure stabilizing support two and a centrifugal pump shell, both left and right sides of the centrifugal pump shell are fixed with mounting seats, both left and right sides of the centrifugal pump shell are fixed with side seal installation cylinders, the mounting seats all extend through the inside of the same side of the side seal installation cylinder, the pressure stabilizing support one and the pressure stabilizing support two are fixed above the base, the two mounting seats are respectively fixed on the upper ends of the pressure stabilizing support one and the pressure stabilizing support two, the front side of the centrifugal pump shell is provided with a circular arc flange, the circular arc flange is located at the rear side of the feed pump hole on the front side of the centrifugal pump shell, the upper end of the centrifugal pump shell is fixed with a top seal installation cylinder, the top seal installation cylinder is located at the lower side of the discharge pump hole on the upper side of the centrifugal pump shell, the rear side of the centrifugal pump shell is provided with a liquid passing connecting bearing seat, a impeller shaft is rotatably arranged in the inside of the liquid passing connecting bearing seat, a shaft coupling is arranged between the impeller shaft and one end of the driving shaft of the engine, a impeller is detachably arranged on the impeller shaft, the impeller is located in the inside of the centrifugal pump shell, a plurality of liquid passing connecting holes are formed in both left and right sides of the liquid passing connecting bearing seat, a plurality of liquid guiding through pipes are arranged on both left and right sides of the liquid passing connecting bearing seat.

[0013] With the above structure, one end of the driving shaft of the engine directly drives the impeller shaft to rotate at high speed in the inside of the liquid passing connecting bearing seat through the shaft coupling; the impeller fixed on the impeller shaft rotates at high speed in the centrifugal pump shell, fluid is sucked from the feed pump hole into the center of the impeller, the impeller blades work on the fluid to make it obtain high speed and kinetic energy, the fluid expands in the centrifugal pump shell with a volute shape, the speed is reduced, and the kinetic energy is converted into pressure energy; the pressurized fluid is finally discharged from the discharge pump hole to complete the pumping task; The cooling liquid enters the cavity of the liquid passing connecting bearing seat through the liquid passing connecting hole on one side, and then is injected into the inside of the centrifugal pump shell, and is discharged from the liquid passing connecting hole on the other side, directly taking away the heat generated by the high-speed rotation of the impeller shaft and the heat generated by the work of the impeller blades on the fluid, to circulate the cooling liquid; The cooling liquid is injected into the inside of the centrifugal pump shell through the liquid guiding through pipe on one side, and is discharged from the liquid guiding through pipe on the other side, forming a continuous cooling loop, which greatly improves the reliability and service life of the bearing under heavy load and high speed operation; The mounting seat is used for stably installing the centrifugal pump shell above the pressure stabilizing support one and the pressure stabilizing support two; The side sealing mounting cylinder and the arc flange cooperate with the top sealing mounting cylinder to install the sealing cooling cover, so that the centrifugal pump housing and the sealing cooling cover form a sealed cooling cavity, and a cooling liquid circulation system is formed.

[0014] The sealing cooling cover comprises a front cover and two symmetrically arranged side covers. The upper side of the front cover is provided with a top avoiding opening. The left and right sides of the front cover are provided with symmetrically arranged side avoiding openings. The front side of the front cover is provided with an arc opening. The front end of the arc opening is provided with a sealing ring. The upper end of the side cover is provided with a top side avoiding opening. The side of the side cover is provided with a side avoiding opening. The rear side of the side cover is fixedly provided with a cylindrical half cover. A plurality of communication holes are formed in the cylindrical half cover. A liquid guide pipe penetrates and extends out of the corresponding communication hole. The liquid guide pipe is sealingly connected with the corresponding communication hole. The two side covers and the two cylindrical half covers are combined into a rear cover. The two side covers are fixedly connected to the rear side of the front cover. The two top side avoiding openings and the top avoiding opening are combined into a top mounting opening. The side avoiding openings and the side avoiding openings on the same side are combined into a side mounting opening.

[0015] With the above structure, the sealing cooling cover forms a closed jacket space, which is used as a liquid cooling jacket of the centrifugal pump mechanism to achieve efficient cooling management. The cooling liquid circulates in the closed cavity formed by the front cover and the two side covers and the cylindrical half cover. The shape of the front cover and the two side covers and the cylindrical half cover matches the structure of the centrifugal pump mechanism. The liquid guide pipe penetrates and extends out of the corresponding communication hole, and the liquid guide pipe is sealingly connected with the corresponding communication hole, which is used for heat dissipation. The cooling liquid is injected through one side of the liquid guide pipe, circulates in the cavity, and then flows out from the other side of the liquid guide pipe to enter the next cooling cycle and flow to the cooling heat exchanger. The two top side avoiding openings and the top avoiding opening are combined into a top mounting opening. The side avoiding openings and the side avoiding openings on the same side are combined into a side mounting opening. The arc opening is used to install the sealing cooling cover on the centrifugal pump mechanism. The sealing ring is installed at the front end of the arc opening to prevent the cooling liquid from leaking.

[0016] The top mounting opening is detachably arranged on the top sealing mounting cylinder. The arc opening is detachably arranged on the arc flange. The sealing ring is in contact with the front end of the arc flange. The side mounting opening is detachably arranged on the same side of the side sealing mounting cylinder. The two cylindrical half covers are detachably arranged on the front end of the liquid connection bearing seat. The top mounting opening, the arc opening, the side mounting opening, the two cylindrical half covers, the front end of the liquid connection bearing seat, the two side covers, and the front cover are all provided with sealing pads.

[0017] Adopt above structure, sealed cooling cover closed cooling cavity. Through its each opening: top installation mouth, circular arc mouth and side installation mouth, accurately suit in centrifugal pump mechanism corresponding protruding part: top seal installation cylinder, circular arc ring flange and side seal installation cylinder; Establish sealed connection: add sealing washer between all connection interface, and compress these sealing washer through detachable bolt connection mode; Cooling liquid side: the cavity inside sealed cooling cover, part outer wall of liquid connection bearing seat, constitute cooling liquid circulation flow channel; Bearing cooling liquid road butt joint: two cylinder half cover enclose and seal in liquid connection bearing seat front end, for cooling treatment.

[0018] The cooling heat exchanger comprises a mounting plate, a heat exchange fan, a heat dissipation box, a liquid storage tank and a compressor, the mounting plate is fixed at the upper end of the base, the heat dissipation box, the liquid storage tank and the compressor are fixed at the upper end of the mounting plate, the heat exchange fan is arranged in the heat dissipation box, the transmission belt wheel pair is arranged between the rotating shaft of the heat exchange fan and the linkage shaft of the engine, the inlet end of the heat exchange pipe is connected with the outlet end of the compressor through a pipeline, the outlet end of the heat exchange pipe is connected with the inlet end of the liquid storage tank through a pipeline, and the inlet end of the compressor is provided with a liquid passage pipe.

[0019] Adopt above structure, compressor will from high temperature cooling liquid of liquid passage pipe carries on compression, and pumps into heat exchange pipe, at this time, heat exchange fan forced blowing, accelerates air and heat exchange pipe in heat dissipation box to carry out heat exchange, the heat carried by the cooling liquid is rapidly dissipated to the air, and the cooling liquid is condensed into low-temperature cooling liquid in the process; The low-temperature cooling liquid agent subsequently enters the liquid storage tank, and the liquid storage tank also plays a buffering and drying role; The power of the heat exchange fan is driven by the engine through the transmission belt wheel pair to drive the rotating shaft of the linkage shaft to rotate, and then another transmission belt wheel pair drives the rotating shaft of the heat exchange fan to rotate in the rotating shaft seat, so that the heat exchange fan rotates rapidly.

[0020] The filter mechanism comprises a filter frame, the filter frame is inverted T-shaped, the filter frame is fixed at the upper end of the base, the filter frame is fixed with a circulating pump, a purifier group, a filter cylinder, a controller and a metering valve, the outlet end of the circulating pump is connected with the filter cylinder and the purifier group in sequence through a connecting pipe, the connecting pipe is provided with the metering valve, the side of the filter cylinder is provided with a blowdown pipe, the circulating pump and the metering valve are electrically connected with the controller respectively, and the outlet end of the purifier group is connected with the liquid passage pipe.

[0021] With the above structure, the circulating pump is started to draw the high-temperature cooling liquid to be treated from the cooling system: the sealed cooling cover and the centrifugal pump mechanism; the drawn liquid first enters the filter cartridge, and the large-particle impurities in the cooling liquid are intercepted by the filter medium to achieve preliminary cleaning; the cooling liquid filtered physically is then pumped into the purifier group, which can be equipped with ion exchange resin, magnetic device, oil removal filter element or other chemical treatment medium for removing soluble impurities, softening water quality, inhibiting algae breeding and preventing corrosion; accurate dosing: the metering valve can accurately inject chemical additives such as corrosion inhibitor, rust inhibitor and defoaming agent into the cooling liquid flowing through the connecting pipe in proportion under the control of the controller to maintain the stability of the chemical properties of the cooling liquid; blowdown: the impurities accumulated in the filter cartridge can be periodically manually or automatically discharged from the system through the blowdown pipe to maintain cleanliness without cleaning the entire system; backflow: the cleaned cooling liquid after treatment flows out from the liquid outlet end of the purifier group, returns to the cooling system through the liquid passage pipe, and completes a purification cycle; the controller controls the operation of the circulating pump and the opening and closing of the metering valve, and can automatically work according to time, flow or water quality sensor signal to realize intelligent management.

[0022] The liquid inlet end of the mixing pump is connected with a flow guide pipe and a suction pipe, the liquid outlet end of the mixing pump is connected with an injection pipe and a discharge pipe respectively, the other end of the flow guide pipe is connected with a main inlet pipe, the main inlet pipe is connected with a liquid injection pipe between one of the liquid passage holes on the same side, the main inlet pipe is connected with a seat pressure stabilizing pipe one between the pressure stabilizing seat one, the pressure stabilizing seat one is connected with a pressure stabilizing communication pipe between the pressure stabilizing seat two, the pressure stabilizing seat two is connected with a seat pressure stabilizing pipe two, the end of the seat pressure stabilizing pipe two is connected with a main outlet pipe, the main outlet pipe is connected with a liquid outlet pipe between one of the liquid passage holes on the same side, the end of the injection pipe is connected with one of the liquid guide pipes on one side, the upper end of the suction pipe is provided with an overflow valve pipe, the end of the suction pipe is connected with one of the liquid guide pipes on the other side, the end of the discharge pipe is connected with the main outlet pipe, one of the communication holes on one side is connected with a cooling liquid inlet pipe, one of the communication holes on the other side is connected with a cooling liquid outlet pipe, the liquid inlet end of the circulating pump is connected with the main outlet pipe and the cooling liquid outlet pipe respectively, and the liquid outlet end of the liquid storage tank is connected with the main inlet pipe and the cooling liquid inlet pipe.

[0023] With the above structure, the cooling liquid in the liquid storage tank is injected into the main inlet pipe, and then into the flow guide pipe, the liquid injection pipe and the support pressure stabilizing pipe one respectively. The flow guide pipe returns to the inside of the mixing pump to stabilize the flow. The liquid injection pipe is connected to one of the liquid passing connection holes on the same side, and the cooling liquid passes through the liquid passing connection hole on one side into the cavity of the liquid passing bearing seat, thereby injecting into the centrifugal pump shell, and then from the other side of the liquid guide pipe, through the extraction pipe, into the mixing pump. The extraction pipe is used to release the pressure through the overflow valve pipe. The cooling liquid is injected into the pressure stabilizing support one through the support pressure stabilizing pipe one, and then into the pressure stabilizing support two through the pressure stabilizing communication pipe. The cavities in the pressure stabilizing support one and the pressure stabilizing support two act as pressure stabilizing tanks, and then the cooling liquid is injected into the main outlet pipe through the support pressure stabilizing pipe two, thereby being discharged into the circulating pump. This process is a buffer cooling split flow, which avoids the temperature of the liquid outlet of the centrifugal pump shell being too high, and can preliminarily cool the main outlet pipe. The mixing pump injects the internal cooling liquid into the centrifugal pump shell through the end of the injection pipe and the liquid guide pipe on one side, or discharges it into the main outlet pipe through the discharge pipe, thereby being discharged into the circulating pump. At the same time, the discharge of the liquid outlet pipe connected to the liquid passing connection hole on the other side is injected into the main outlet pipe for pressure stabilizing and flow guiding. The cooling liquid in the liquid storage tank is injected into the main inlet pipe, and then into the liquid cooling jacket formed between the sealed cooling cover and the centrifugal pump mechanism through the communication hole connected thereto, thereby cooling the centrifugal pump mechanism. The cooling liquid carrying the temperature is discharged into the circulating pump through the cooling liquid outlet pipe connected to the other communication hole.

[0024] Compared with the prior art, the cooling water circulating centrifugal pump has the following advantages: The centrifugal pump has high cooling performance and power utilization rate: the system adopts a compressor refrigeration cycle to form a high-performance cooling air conditioner. The cooling efficiency is not affected by high temperature environment, and the temperature of the engine and the pump body can be maintained at an excellent level. The unique one-shaft three-output power distribution design simultaneously drives the main pump, the cooling fan and the exhaust fan, maximizing the use of a single engine power source, and the structure is compact and the energy utilization rate is high.

[0025] High reliability and durability: the design adopts a comprehensive and multi-level cooling and sealing scheme, and the internal cooling and external cooling cooperate with the double circuit cooling to ensure that the core power and working components do not overheat. The complex sealing cooling cover and the sealing pads distributed on each interface facilitate assembly and form a reliable sealing cavity to prevent leakage. The integrated cooling design directly attacks the heat of the weakest link, greatly improving the life and reliability of the liquid passing bearing seat and the centrifugal pump shell under heavy load and high speed operation.

[0026] Intelligent operation and maintenance-free design: the system is monitored by the control box, which can automatically start and stop, and alarm protection according to parameters; the filtering and purifying mechanism can automatically separate the cooling liquid, chemically purify and accurately dose, maintain the long-term stability of the cooling medium, fundamentally prevent the occurrence of scale, corrosion and blockage, realize self-maintenance of the system, and greatly reduce the frequency of manual cleaning, replacement of cooling liquid and maintenance.

[0027] Environmental protection and stable operation: the equipment integrates a silencer and is directly driven by an engine to drive the flow assisting fan, effectively reducing noise pollution and meeting strict environmental protection requirements; the design of stable pressure support and pulse buffer pipeline can significantly absorb the pressure fluctuation generated by the centrifugal pump, ensure stable output flow, reduce pipeline system impact, buffer cooling and shunt, avoid high outlet temperature, and can be preliminarily cooled at the main outlet pipe; intelligent monitoring and multiple protection mechanisms also prevent overload and overheating operation, ensuring the safety of personnel and equipment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective structural schematic diagram of the present application.

[0029] Figure 2 is another angle structural schematic diagram of Figure 1 .

[0030] Figure 3 is a perspective structural schematic diagram of part of the components in the present application.

[0031] Figure 4 is a perspective structural schematic diagram of the pipeline layout in the present application.

[0032] Figure 5 is another angle structural schematic diagram of Figure 4 .

[0033] Figure 6 is an exploded structural schematic diagram of the sealing cooling cover in the present application.

[0034] Figure 7 is another angle structural schematic diagram of Figure 6 .

[0035] Figure 8 is a perspective structural schematic diagram of the centrifugal pump mechanism in the present application.

[0036] Figure 9 is another angle structural schematic diagram of Figure 8 .

[0037] Figure 10 is a perspective structural schematic diagram of the cooling heat exchanger in the present application.

[0038] Figure 11 is a perspective structural schematic diagram of the filtering mechanism in the present application.

[0039] Figure 12 is Figure 11 another angle structure diagram.

[0040] In the figure, 1, base; 2, centrifugal pump mechanism; 3, sealing cooling cover; 4, stand; 5, mixing pump; 6, muffler; 7, engine; 8, cooling heat exchanger; 9, filtering mechanism; 10, control box; 11, exhaust cylinder fan shaft; 12, linkage shaft; 13, transmission belt wheel pair; 14, driving shaft; 15, support; 16, main inlet pipe; 17, flow guide pipe; 18, liquid injection pipe; 19, support pressure stabilizing pipe one; 20, cooling liquid inlet pipe; 21, pressure stabilizing support one; 22, pressure stabilizing communication pipe; 23, pressure stabilizing support two; 24, support pressure stabilizing pipe two; 25, cooling liquid outlet pipe; 26, liquid outlet pipe; 27, extraction pipe; 28, main outlet pipe; 29, discharge pipe; 30, overflow valve pipe; 31, injection pipe; 32, shaft coupling; 33, front cover; 34, top avoiding opening; 35, circular arc opening; 36, side avoiding opening one; 37, side cover; 38, side avoiding opening two; 39, top side avoiding opening two; 40, cylindrical half cover; 41, communication hole; 42, sealing ring; 43, impeller shaft; 44, liquid passing connecting bearing seat; 45, liquid passing communication hole; 46, liquid guiding through pipe; 47, mounting seat; 48, side sealing mounting cylinder; 49, circular arc ring flange; 50, feeding pump hole; 51, top sealing mounting cylinder; 52, discharging pump hole; 53, centrifugal pump housing; 54, mounting plate; 55, heat dissipation box; 56, heat exchange pipe; 57, heat exchange fan; 58, rotating shaft seat; 59, liquid storage tank; 60, compressor; 61, liquid passing pipe; 62, filtering frame; 63, circulating pump; 64, purifier group; 65, filter cylinder; 66, blowdown pipe; 67, connecting pipe; 68, controller; 69, metering valve. DETAILED DESCRIPTION

[0041] The following are specific embodiments of the present application and further describe the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0042] As Figures 1-12As shown, the cooling water circulating centrifugal pump comprises a base 1, a stand 4, a filtering mechanism 9 and a control box 10 arranged above the base 1, and a centrifugal pump mechanism 2, an engine 7 and a cooling heat exchanger 8 arranged in sequence from front to back, the filtering mechanism 9 and the control box 10 are located at the left side of the engine 7, the stand 4 is located at the right side of the centrifugal pump mechanism 2, a mixing pump 5 is arranged on the stand 4, a silencer 6 is arranged on the engine 7, one end of a driving shaft 14 of the engine 7 is in transmission connection with the centrifugal pump mechanism 2, the other end of the driving shaft 14 of the engine 7 is in transmission connection with the silencer 6 and the cooling heat exchanger 8 respectively, a sealing cooling cover 3 is arranged outside the centrifugal pump mechanism 2, the mixing pump 5 is connected with the centrifugal pump mechanism 2 and the filtering mechanism 9 through pipelines respectively, the cooling heat exchanger 8 is connected with the centrifugal pump mechanism 2, the sealing cooling cover 3 and the filtering mechanism 9 through pipelines respectively, and the sealing cooling cover 3 is connected with the filtering mechanism 9 through a pipeline.

[0043] One end of the driving shaft 14 of the engine 7 drives the centrifugal pump mechanism 2 to realize fluid delivery of the centrifugal pump mechanism 2; when cooling and cleaning are needed, the centrifugal pump mechanism 2 is closed, the mixing pump 5 and the filtering mechanism 9 cooperate to form negative pressure, the material deposited in the centrifugal pump mechanism 2 is pumped out, injected into the filtering mechanism 9 for solid-liquid separation and liquid purification, clean liquid is obtained and injected into the cooling heat exchanger 8, the other end of the driving shaft 14 of the engine 7 cooperates with the cooling heat exchanger 8 to obtain low-temperature liquid, which is injected into the centrifugal pump mechanism 2 to cool and lower the temperature of the centrifugal pump mechanism 2, and also has a certain cleaning effect; At this time, the filtering mechanism 9 can work synchronously, the filtering mechanism 9 pumps out the cooling liquid deposited in the sealing cooling cover 3 and performs solid-liquid separation and liquid purification to obtain clean cooling liquid, which is injected into the cooling heat exchanger 8 to obtain low-temperature liquid, which is then returned to the sealing cooling cover 3 to cool and lower the temperature of the centrifugal pump mechanism 2 externally; the internal and external cooling and temperature-lowering circulation of the centrifugal pump mechanism 2 is formed; When the centrifugal pump mechanism 2 works normally, the mixing pump 5 is closed, and the filtering mechanism 9, the cooling heat exchanger 8 and the sealing cooling cover 3 cooperate to cool and lower the temperature of the centrifugal pump mechanism 2 externally when working; The silencer 6 is installed on the exhaust port of the engine 7, the other end of the driving shaft 14 of the engine 7 drives the silencer 6 to work, which is used to reduce the noise generated when the engine 7 discharges exhaust gas, and meets the requirements of environmental protection and operation environment; The control box 10 is the brain of the system, which is internally provided with an electrical control system, which is used to start / stop the engine 7, monitor operating parameters (such as temperature and pressure), alarm and protection, etc., to realize automatic operation and safe operation.

[0044] The lower end of the engine 7 is fixed with several supports 15, which are fixed in the middle of the upper end of the base 1. The other end of the driving shaft 14 of the engine 7 is provided with a transmission belt wheel pair 13 with the linkage shaft 12 of the engine 7 and the exhaust cylinder fan shaft 11 of the muffler 6.

[0045] The supports 15 firmly install the engine 7 at the center of the base 1, ensuring the stability during operation. One end of the driving shaft 14 of the engine 7 drives the centrifugal pump mechanism 2, completing the fluid pumping task. The other end of the driving shaft 14 of the engine 7 transmits power to the linkage shaft 12 through the transmission belt wheel pair 13, which drives the cooling heat exchanger 8 to generate forced air flow for heat dissipation of the circulating cooling liquid. At the same time, the transmission belt wheel pair 13 also transmits power from the driving shaft 14 to the exhaust cylinder fan shaft 11 of the muffler 6, ensuring that the exhaust gas of the engine 7 can smoothly pass through the muffler 6 and be discharged.

[0046] The centrifugal pump mechanism 2 includes a pressure stabilizing support one 21, a pressure stabilizing support two 23, and a centrifugal pump shell 53. The left and right sides of the centrifugal pump shell 53 are fixed with mounting seats 47, and the left and right sides of the centrifugal pump shell 53 are fixed with side seal installation cylinders 48. The mounting seats 47 extend through the inside of the same side of the side seal installation cylinder 48. The pressure stabilizing support one 21 and the pressure stabilizing support two 23 are fixed above the base 1. The two mounting seats 47 are fixed at the upper ends of the pressure stabilizing support one 21 and the pressure stabilizing support two 23, respectively. The front side of the centrifugal pump shell 53 is provided with a circular arc flange 49, which is located at the rear side of the feed pump hole 50 on the front side of the centrifugal pump shell 53. The upper end of the centrifugal pump shell 53 is fixed with a top seal installation cylinder 51, which is located below the discharge pump hole 52 on the upper side of the centrifugal pump shell 53. The rear side of the centrifugal pump shell 53 is provided with a liquid passage connecting bearing seat 44. The inside of the liquid passage connecting bearing seat 44 is rotatably provided with an impeller shaft 43. The impeller shaft 43 is provided with a shaft coupling 32 between one end of the impeller shaft 43 and the driving shaft 14 of the engine 7. The impeller shaft 43 is detachably provided with an impeller, which is located inside the centrifugal pump shell 53. The left and right sides of the liquid passage connecting bearing seat 44 are provided with a plurality of liquid passage connecting holes 45. The left and right sides of the liquid passage connecting bearing seat 44 are provided with a plurality of liquid guide pipes 46.

[0047] One end of the driving shaft 14 of the engine 7 directly drives the impeller shaft 43 to rotate at high speed inside the liquid passage connecting bearing seat 44 through the shaft coupling 32. The impeller fixed on the impeller shaft rotates at high speed in the centrifugal pump shell 53. Fluid is sucked from the feed pump hole 50 into the center of the impeller. The impeller blades work on the fluid, making it gain high speed and kinetic energy. The fluid expands in the centrifugal pump shell 53 in the shape of a volute, reducing the speed and converting the kinetic energy into pressure energy. The pressurized fluid is finally discharged from the discharge pump hole 52, completing the pumping task. The cooling liquid enters the cavity of the through-liquid connecting bearing seat 44 through the through-liquid connecting hole 45 on one side, and then is injected into the centrifugal pump housing 53, and is discharged from the through-liquid connecting hole 45 on the other side, thereby directly taking away the heat generated by the high-speed rotation of the impeller shaft 43 and the heat generated by the work of the impeller blades on the fluid, and performing cooling liquid circulation; The cooling liquid is injected into the centrifugal pump housing 53 through the liquid guide pipe 46 on one side, and is discharged from the liquid guide pipe 46 on the other side, thereby forming a continuous cooling loop, which greatly improves the reliability and service life of the bearing under heavy load and high-speed operation. The mounting seat 47 is used for stably mounting the centrifugal pump housing 53 above the stable pressure support 21 and the stable pressure support 23. The side seal mounting cylinder 48, the arc flange 49 and the top seal mounting cylinder 51 are matched to install the sealing cooling cover 3, so that the inside of the centrifugal pump housing 53 and the sealing cooling cover 3 forms a sealed cooling cavity, thereby forming a cooling liquid circulation system.

[0048] The sealing cooling cover 3 comprises a front cover 33 and two symmetrically arranged side covers 37. The upper side of the front cover 33 is provided with a top avoiding opening 34, the left and right sides of the front cover 33 are provided with symmetrically arranged side avoiding openings 36, the front side of the front cover 33 is provided with an arc opening 35, the front end of the arc opening 35 is provided with a sealing ring 42, the upper end of the side cover 37 is provided with a top side avoiding opening 39, the side of the side cover 37 is provided with a side avoiding opening 38, the rear side of the side cover 37 is fixedly provided with a cylindrical half cover 40, a plurality of communication holes 41 are formed in the cylindrical half cover 40, the liquid guide pipe 46 penetrates and extends out of the corresponding communication hole 41, and the liquid guide pipe 46 and the corresponding communication hole 41 are sealingly connected. The two side covers 37 and the two cylindrical half covers 40 are combined into a rear cover, the two side covers 37 are fixedly connected to the rear side of the front cover 33, the two top side avoiding openings 39 and the top avoiding opening 34 are combined into a top mounting opening, and the side avoiding openings 38 and the side avoiding openings 36 on the same side are combined into a side mounting opening.

[0049] The sealed cooling cover 3 forms a closed jacket space as a liquid cooling jacket of the centrifugal pump mechanism 2 to achieve efficient cooling management; the cooling liquid circulates in the closed cavity formed by the front cover 33 and the two side covers 37 and the cylindrical half cover 40; the shapes of the front cover 33 and the two side covers 37 and the cylindrical half cover 40 match the structure of the centrifugal pump mechanism 2; the liquid guide through pipe 46 penetrates the corresponding communication hole 41 and is sealingly connected between the liquid guide through pipe 46 and the corresponding communication hole 41 for heat dissipation; the cooling liquid is injected through one side of the liquid guide through pipe 46, circulates in the cavity, and then flows out from the other side of the liquid guide through pipe 46 to enter the next cooling cycle and flow to the cooling heat exchanger 8; the two top side avoiding openings two 39 and the top avoiding opening 34 are combined into a top mounting opening, the side avoiding opening two 38 and the same side side avoiding opening one 36 are combined into a side mounting opening, and the arc opening 35 is matched to cooperate and install the sealed cooling cover 3 on the centrifugal pump mechanism 2, and the sealing ring 42 is installed at the front end of the arc opening 35 to seal and prevent the cooling liquid from leaking.

[0050] The top mounting opening is detachably arranged on the top sealing mounting cylinder 51, the arc opening 35 is detachably arranged on the arc ring flange 49, the sealing ring 42 abuts against the front end of the arc ring flange 49, the side mounting opening is detachably arranged on the same side side sealing mounting cylinder 48, the two cylindrical half covers 40 are detachably arranged at the front end of the liquid connection bearing seat 44, and sealing pads are arranged between the top mounting opening and the top sealing mounting cylinder 51, between the arc opening 35 and the arc ring flange 49, between the side mounting opening and the same side side sealing mounting cylinder 48, between the two cylindrical half covers 40, between the two cylindrical half covers 40 and the front end of the liquid connection bearing seat 44, between the two side covers 37, and between the two side covers 37 and the front cover 33.

[0051] The sealed cooling cover 3 forms a closed cooling cavity. Through the various openings on it: the top mounting opening, the arc opening 35 and the side mounting opening, it is accurately fitted on the corresponding protruding parts of the centrifugal pump mechanism 2: the top sealing mounting cylinder 51, the arc ring flange 49 and the side sealing mounting cylinder 48; a sealing connection is established: sealing pads are added between all the connecting interfaces, and these sealing pads are compressed by detachable bolt connection; the cooling liquid side: the cavity inside the sealed cooling cover 3 and part of the outer wall of the liquid connection bearing seat 44 constitute the flow channel of the cooling liquid circulation; bearing cooling liquid road docking: the two cylindrical half covers 40 wrap and seal the front end of the liquid connection bearing seat 44 for cooling treatment.

[0052] The cooling heat exchanger 8 comprises a mounting plate 54 fixed on the upper end of the base 1, a heat dissipation box 55, a liquid storage tank 59 and a compressor 60 fixed on the upper end of the mounting plate 54, the heat dissipation box 55 is internally provided with heat exchange pipes 56, a rotating shaft seat 58 is fixed on the front side of the heat dissipation box 55, a rotating shaft of a heat exchange fan 57 is fixed in the rotating shaft seat 58, a transmission belt wheel pair 13 is arranged between the rotating shaft of the heat exchange fan 57 and the linkage shaft 12 of the engine 7, a pipeline is connected between the liquid inlet end of the heat exchange pipes 56 and the liquid outlet end of the compressor 60, a pipeline is connected between the liquid outlet end of the heat exchange pipes 56 and the liquid inlet end of the liquid storage tank 59, and the liquid inlet end of the compressor 60 is provided with a liquid passage pipe 61.

[0053] The compressor 60 compresses the high-temperature cooling liquid from the liquid passage pipe 61 and pumps it into the heat exchange pipes 56, at this time, the heat exchange fan 57 forcibly blows air to accelerate the heat exchange between the air and the heat exchange pipes 56 in the heat dissipation box 55, rapidly dissipates the heat carried by the cooling liquid to the air, and the cooling liquid is condensed into low-temperature cooling liquid in the process; the low-temperature cooling liquid agent then enters the liquid storage tank 59, which also plays a buffering and drying role; the power of the heat exchange fan 57 is driven by the engine 7 to rotate the linkage shaft 12 through the transmission belt wheel pair 13, and then rotates the rotating shaft of the heat exchange fan 57 in the rotating shaft seat 58 through another transmission belt wheel pair 13, thereby driving the heat exchange fan 57 to rotate rapidly.

[0054] The filtering mechanism 9 comprises a filtering frame 62 in an inverted T shape, the filtering frame 62 is fixed on the upper end of the base 1, and a circulating pump 63, a purifier group 64, a filtering cylinder 65, a controller 68 and a metering valve 69 are fixed on the filtering frame 62, the liquid outlet end of the circulating pump 63 is connected with the filtering cylinder 65 and the purifier group 64 in sequence through a connecting pipe 67, the connecting pipe 67 is provided with the metering valve 69, a blow-off pipe 66 is arranged on the side of the filtering cylinder 65, the circulating pump 63 and the metering valve 69 are electrically connected with the controller 68, and the liquid outlet end of the purifier group 64 is connected with the liquid passage pipe 61.

[0055] The circulating pump 63 is started to draw the high-temperature cooling liquid to be treated from the cooling system: the sealed cooling cover 3 and the centrifugal pump mechanism 2, and the liquid to be cleaned. The drawn liquid first enters the filter cartridge 65, and the large-particle impurities in the cooling liquid are intercepted by the filter medium to achieve preliminary cleaning. The physically filtered cooling liquid is then pumped into the purifier set 64, which can be equipped with ion exchange resin, magnetic device, oil removal filter element or other chemical treatment medium for removing soluble impurities, softening water quality, inhibiting algae growth and preventing corrosion. Precise dosing: the metering valve 69 can accurately inject chemical additives such as corrosion inhibitor, rust inhibitor and defoaming agent into the cooling liquid flowing through the connecting pipe 67 under the control of the controller 68 to maintain the stability of the chemical properties of the cooling liquid. Drainage: the impurities accumulated in the filter cartridge 65 can be periodically manually or automatically drained from the system through the drainage pipe 66 to maintain cleanliness without cleaning the entire system. Backflow: the cleaned cooling liquid after treatment flows out from the outlet of the purifier set 64, returns to the cooling system through the liquid passage pipe 61, and completes a purification cycle. The controller 68 controls the operation of the circulating pump 63 and the opening and closing of the metering valve 69, and can automatically work according to time, flow or water quality sensor signal to realize intelligent management.

[0056] The inlet end of the mixing pump 5 is connected with the flow guide pipe 17 and the extraction pipe 27, the outlet end of the mixing pump 5 is connected with the injection pipe 31 and the discharge pipe 29 respectively, the other end of the flow guide pipe 17 is connected with the main inlet pipe 16, the main inlet pipe 16 is connected with the liquid injection pipe 18 between the main inlet pipe 16 and one of the liquid passage connecting holes 45 on the same side, the main inlet pipe 16 is connected with the seat pressure stabilizing pipe one 19 between the main inlet pipe 16 and the pressure stabilizing seat one 21, the pressure stabilizing seat one 21 is connected with the pressure stabilizing communication pipe 22 between the pressure stabilizing seat one 21 and the pressure stabilizing seat two 23, the pressure stabilizing seat two 23 is connected with the seat pressure stabilizing pipe two 24, the end of the seat pressure stabilizing pipe two 24 is connected with the main outlet pipe 28, the main outlet pipe 28 is connected with the liquid outlet pipe 26 between the main outlet pipe 28 and one of the liquid passage connecting holes 45 on the same side, the end of the injection pipe 31 is connected with one of the liquid guide passage pipes 46 on one side, the overflow valve pipe 30 is arranged on the upper end of the extraction pipe 27, the end of the extraction pipe 27 is connected with one of the liquid guide passage pipes 46 on the other side, the end of the discharge pipe 29 is connected with the main outlet pipe 28, the cooling liquid inlet pipe 20 is connected with one of the communication holes 41 on one side, the cooling liquid outlet pipe 25 is connected with one of the communication holes 41 on the other side, the inlet end of the circulating pump 63 is connected with the main outlet pipe 28 and the cooling liquid outlet pipe 25 respectively, and the outlet end of the liquid storage tank 59 is connected with the main inlet pipe 16 and the cooling liquid inlet pipe 20.

[0057] The cooling liquid in the liquid storage tank 59 is injected into the main inlet pipe 16, and then into the flow guide pipe 17, the liquid injection pipe 18 and the support pressure pipe 19 respectively. The flow guide pipe 17 returns to the inside of the mixing pump 5 to stabilize the flow. The liquid injection pipe 18 is connected to one of the liquid flow connection holes 45 on the same side, and the cooling liquid enters the cavity of the liquid flow connection bearing seat 44 through the liquid flow connection hole 45 on one side, so as to be injected into the centrifugal pump shell 53, and then injected into the mixing pump 5 through the liquid guide pipe 46 on the other side and the extraction pipe 27. The extraction pipe 27 is used for pressure relief overflow through the overflow valve pipe 30. The cooling liquid is injected into the pressure stabilizing support 21 through the support pressure pipe 19, and then injected into the pressure stabilizing support 23 through the pressure stabilizing communication pipe 22. The cavities in the pressure stabilizing support 21 and the pressure stabilizing support 23 act as pressure stabilizing tanks, and then the cooling liquid is injected into the main outlet pipe 28 through the support pressure pipe 24, and then discharged into the circulating pump 63. This process is a buffer cooling split flow, which can prevent the outlet temperature of the centrifugal pump shell 53 from being too high, and can preliminarily cool the main outlet pipe 28. The mixing pump 5 injects the internal cooling liquid into the centrifugal pump shell 53 through the end of the injection pipe 31 and the liquid guide pipe 46 on one side, or discharges the liquid into the main outlet pipe 28 through the discharge pipe 29, and then into the circulating pump 63. At the same time, the discharge of the liquid flow connection hole 45 on the other side is connected to the outlet pipe 26, and the cooling liquid is injected into the main outlet pipe 28 for pressure stabilizing and flow guiding. The cooling liquid in the liquid storage tank 59 is injected into the main inlet pipe 16, and then enters the liquid cooling jacket between the sealed cooling cover 3 and the centrifugal pump mechanism 2 through the communication hole 41 connected thereto, so as to cool the centrifugal pump mechanism 2. The cooling liquid carrying temperature is discharged into the circulating pump 63 through the cooling liquid outlet pipe 25 connected to the other communication hole 41.

[0058] Working principle of the application: I. Power generation and distribution process: the power source is started, the control box 10 sends instructions, the engine 7 is started, and the power is divided into three parts: front end output: the front end of the main shaft 14 of the engine 7 directly drives the impeller shaft 43 of the centrifugal pump mechanism 2 to rotate at high speed through the shaft coupling 32, which is the power source of the main pumping function: the pumping process is that the impeller shaft 43 drives the impeller to rotate in the centrifugal pump shell 53, absorbs the fluid from the inlet pump hole 50, discharges the fluid from the outlet pump hole 52 after pressurization, and completes the main task. In this process, the centrifugal pump mechanism 2 will heat up and need to be cooled. rear end output: the rear end of the main shaft 14 simultaneously distributes power to two systems through the transmission belt wheel pair 13: cooling system: drive the linkage shaft 12, and then drive the heat exchange fan 57 of the cooling heat exchanger 8 to rotate at high speed through the other transmission belt wheel pair 13 to provide forced air for heat dissipation; exhaust system: drive the exhaust cylinder fan shaft 11 of the silencer 6 to enhance the exhaust efficiency of the engine 7 and assist in heat dissipation of the silencer shell.

[0059] Internal cooling, with cleaning: centrifugal pump mechanism 2 closes the passage, the circulating pump 63 of the mixing pump 5 and filtering mechanism 9 cooperate to form negative pressure, the cooling liquid inside the liquid storage tank 59 is injected into the main inlet pipe 16, and then into the flow guide pipe 17, the liquid injection pipe 18 and the support pressure pipe 19; the flow guide pipe 17 returns to the inside of the mixing pump 5 to stabilize the flow; the liquid injection pipe 18 is connected to one of the liquid injection connecting holes 45 on the same side, and the cooling liquid enters the cavity of the liquid injection connecting bearing seat 44 through one of the liquid injection connecting holes 45 on the same side, so as to be injected into the centrifugal pump shell 53, and then from the other one of the liquid injection pipes 46, through the extraction pipe 27, into the mixing pump 5, and the extraction pipe 27 is used for pressure relief overflow through the overflow valve pipe 30; the cooling liquid is injected into the pressure stabilizing support 21 through the support pressure pipe 19, and then into the pressure stabilizing support 23 through the pressure stabilizing pipe 22, and the cavities inside the pressure stabilizing support 21 and the pressure stabilizing support 23 act as pressure stabilizing tanks, and then into the main outlet pipe 28 through the support pressure pipe 24, so as to be discharged into the circulating pump 63, and this process is a buffer cooling and shunt to avoid the temperature of the centrifugal pump shell 53 being too high, and the cooling can be preliminarily reduced at the main outlet pipe 28; the mixing pump 5 injects the internal cooling liquid into the centrifugal pump shell 53 through the end of the injection pipe 31 and the other one of the liquid injection pipes 46 on the same side, or discharges the internal cooling liquid into the main outlet pipe 28 through the discharge pipe 29, so as to be discharged into the circulating pump 63; The liquid extracted by the circulating pump 63 first enters the filter cartridge 65, and the large-particle impurities in the cooling liquid are intercepted by the filter medium to achieve preliminary cleaning; the cooling liquid filtered by the physical filter is then pumped into the purifier group 64, and the purifier group can be provided with ion exchange resin, magnetic device, oil removal filter element or other chemical treatment medium, which is used for removing soluble impurities, softening water quality, inhibiting algae breeding and preventing corrosion; accurate dosing: the metering valve 69 can accurately inject chemical additives such as corrosion inhibitor, antirust agent and defoaming agent into the cooling liquid flowing through the connecting pipe 67 in proportion under the control of the controller 68, so as to maintain the stability of the chemical properties of the cooling liquid; blowdown: the impurities accumulated in the filter cartridge 65 can be periodically manually or automatically discharged from the system through the blowdown pipe 66, so that the cleaning can be maintained without cleaning the entire system; backflow: the clean cooling liquid after treatment flows out from the outlet end of the purifier group 64, enters the compressor 60 through the liquid pipe 61, the compressor 60 compresses the high-temperature cooling liquid from the liquid pipe 61 and pumps it into the heat exchange pipe 56, at this time, the heat exchange fan 57 forcibly blows air to accelerate the heat exchange between the air and the heat exchange pipe 56 in the heat dissipation box 55, so that the heat carried by the cooling liquid is rapidly dissipated to the air, and the cooling liquid is condensed into low-temperature cooling liquid in the process; the low-temperature cooling liquid is then injected into the liquid storage tank 59; External cooling: the cooling liquid in the liquid tank 59 is injected into the main inlet pipe 16, enters the liquid cooling jacket between the sealed cooling cover 3 and the centrifugal pump mechanism 2 through the communication hole 41 connected thereto, cools the centrifugal pump mechanism 2, and carries the temperature of the cooling liquid from another communication hole 41 through the cooling liquid outlet pipe 25, thereby being discharged into the circulating pump 63, filtered through the filtering mechanism 9, cooled through the cooling heat exchanger 8, and then entering the liquid tank 59.

[0060] In summary, the centrifugal pump has high cooling performance and power utilization rate: the system uses a compressor refrigeration cycle to form a high-performance cooling air conditioner, and the cooling efficiency is not affected by high ambient temperature, so that the engine and pump body temperature can be maintained at an excellent level; the unique one-shaft three-output power distribution design simultaneously drives the main pump, cooling fan and exhaust fan, maximizing the use of a single engine power source, and the structure is compact and the energy utilization rate is high.

[0061] High reliability and durability: the design adopts a comprehensive and multi-level cooling and sealing scheme, a double-circuit cooling system with internal cooling and external cooling, which ensures that the core power and working components do not overheat; the complex sealed cooling cover and the sealing pads distributed throughout the interfaces facilitate assembly and form a reliable sealed cavity, preventing leakage; the integrated cooling design directly attacks the heat of the weakest link, greatly improving the life and reliability of the liquid connection bearing seat and the centrifugal pump housing under heavy load and high speed.

[0062] Intelligent operation and maintenance-free design: the system is intelligently monitored by the control box, which can automatically start and stop and alarm and protect according to parameters; the filtering and purifying mechanism can automatically separate solid and liquid, chemically purify and accurately dose the cooling liquid, maintain the long-term stability of the cooling medium, fundamentally prevent the occurrence of scale, corrosion and blockage, realize self-maintenance of the system, and greatly reduce the frequency of manual cleaning, replacement of cooling liquid and maintenance.

[0063] Environmental protection and stable operation: the device integrates a silencer and is directly driven by an engine to drive its flow-assisting fan, effectively reducing noise pollution and meeting strict environmental protection requirements; the design of the pressure stabilizing support and the pulse buffer pipeline can significantly absorb the pressure fluctuations generated by the centrifugal pump, ensure stable output flow, reduce pipeline system impact, buffer cooling and shunt, and avoid excessively high outlet temperature; the main outlet pipe can be preliminarily cooled; intelligent monitoring and multiple protection mechanisms also prevent overload and overheating operation, ensuring the safety of personnel and equipment.

[0064] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A cooling water circulation centrifugal pump, comprising a base (1), characterized in that: Above the base (1) is provided a stand (4), a filter mechanism (9) and a control box (10), and a centrifugal pump mechanism (2), an engine (7) and a cooling heat exchanger (8) arranged in sequence from front to back. The filter mechanism (9) and the control box (10) are located on the left side of the engine (7), the stand (4) is located on the right side of the centrifugal pump mechanism (2), a mixing pump (5) is provided on the stand (4), a muffler (6) is provided on the engine (7), and a space is provided between one end of the driving shaft (14) of the engine (7) and the centrifugal pump mechanism (2). The other end of the driving shaft (14) of the engine (7) is respectively connected to the muffler (6) and the cooling heat exchanger (8) through transmission. A sealed cooling cover (3) is provided on the outside of the centrifugal pump mechanism (2). The mixing pump (5) is respectively connected to the centrifugal pump mechanism (2) and the filter mechanism (9) through pipes. The cooling heat exchanger (8) is respectively connected to the centrifugal pump mechanism (2), the sealed cooling cover (3) and the filter mechanism (9) through pipes. The sealed cooling cover (3) and the filter mechanism (9) are connected through pipes.

2. A cooling water circulation centrifugal pump according to claim 1, characterized in that: A plurality of supports (15) are fixed to the lower end of the engine (7), and the supports (15) are all fixed to the middle of the upper end of the base (1). A transmission pulley pair (13) is provided between the other end of the driving shaft (14) of the engine (7), the linkage shaft (12) of the engine (7), and the exhaust fan shaft (11) of the muffler (6).

3. A cooling water circulation centrifugal pump according to claim 2, characterized in that: The centrifugal pump mechanism (2) includes a pressure stabilizing support 1 (21) and a pressure stabilizing support 2 (23) and a centrifugal pump housing (53). Mounting seats (47) are fixed on both the left and right sides of the centrifugal pump housing (53). Side seal mounting cylinders (48) are fixed on both the left and right sides of the centrifugal pump housing (53). The mounting seats (47) extend through the inside of the side seal mounting cylinders (48) on the same side. The pressure stabilizing support 1 (21) and the pressure stabilizing support 2 (23) are fixed on the top of the base (1). The two mounting seats (47) are respectively fixed on the upper ends of the pressure stabilizing support 1 (21) and the pressure stabilizing support 2 (23). The front side of the centrifugal pump housing (53) is provided with an arc flange (49). The arc flange (49) is located at the feed pump hole (50) on the front side of the centrifugal pump housing (53). On the rear side, a top seal mounting cylinder (51) is fixed to the upper end of the centrifugal pump housing (53), and the top seal mounting cylinder (51) is located below the discharge pump hole (52) on the upper side of the centrifugal pump housing (53). A liquid connection bearing seat (44) is provided on the rear side of the centrifugal pump housing (53), and an impeller shaft (43) is provided inside the liquid connection bearing seat (44) for rotation. A coupling (32) is provided between the impeller shaft (43) and one end of the driving shaft (14) of the engine (7). An impeller is detachably provided on the impeller shaft (43), and the impeller is located inside the centrifugal pump housing (53). A plurality of liquid connection holes (45) are provided on both sides of the liquid connection bearing seat (44), and a plurality of liquid guide pipes (46) are provided on both sides of the liquid connection bearing seat (44).

4. A cooling water circulation centrifugal pump according to claim 3, characterized in that: The sealed cooling cover (3) includes a front cover (33) and two symmetrically arranged side covers (37), the upper side of the front cover (33) is provided with a top avoidance opening (34), the left and right sides of the front cover (33) are provided with symmetrically arranged side avoidance openings (36), the front side of the front cover (33) is provided with an arc opening (35), the front end of the arc opening (35) is provided with a sealing ring (42), the upper end of the side cover (37) is provided with a top side avoidance opening (39), the sides of the side cover (37) are provided with side avoidance openings (38), and the rear side of the side cover (37) is fixed with a cylindrical half cover (40). The cylindrical half cover (40) is provided with a plurality of communication holes (41), and the liquid guide tube (46) extends through the communication holes (41) at corresponding positions, and the liquid guide tube (46) is sealed and connected to the communication holes (41) at corresponding positions. The two side covers (37) and the two cylindrical half covers (40) are combined into a rear cover. The two side covers (37) are fixedly connected to the rear side of the front cover (33). The two top side avoidance openings (39) and the top avoidance opening (34) are combined into a top installation opening. The side avoidance opening (38) and the side avoidance opening (36) on the same side are combined into a side installation opening.

5. A cooling water circulation centrifugal pump according to claim 4, characterized in that: The top mounting port is detachably arranged on the top seal mounting cylinder (51), the arc port (35) is detachably arranged on the arc ring flange (49), and the sealing ring (42) abuts against the front end of the arc ring flange (49), the side mounting port is detachably arranged on the side seal mounting cylinder (48) on the same side, and the two cylindrical half covers (40) are detachably arranged on the front end of the fluid connection bearing seat (44), and sealing gaskets are provided between the top mounting port and the top seal mounting cylinder (51), between the arc port (35) and the arc ring flange (49), between the side mounting port and the side seal mounting cylinder (48) on the same side, between the two cylindrical half covers (40), between the two cylindrical half covers (40) and the front end of the fluid connection bearing seat (44), between the two side covers (37), and between the two side covers (37) and the front cover (33).

6. A cooling water circulation centrifugal pump according to claim 5, characterized in that: The cooling heat exchanger (8) includes a mounting plate (54) and a heat exchange fan (57), the mounting plate (54) is fixed to the upper end of the base (1), a heat dissipation box (55), a liquid storage tank (59) and a compressor (60) are fixed to the upper end of the mounting plate (54), a heat exchange tube (56) is provided inside the heat dissipation box (55), a rotating shaft seat (58) is fixed to the front side of the heat dissipation box (55), a rotating shaft of the heat exchange fan (57) is fixed inside the rotating shaft seat (58), a transmission pulley pair (13) is provided between the rotating shaft of the heat exchange fan (57) and the linkage shaft (12) of the engine (7), a liquid inlet end of the heat exchange tube (56) and a liquid outlet end of the compressor (60) are connected through a pipeline, the liquid outlet end of the heat exchange tube (56) and the liquid inlet end of the liquid storage tank (59) are connected through a pipeline, and a liquid pipe (61) is provided at the liquid inlet end of the compressor (60).

7. A cooling water circulation centrifugal pump according to claim 6, characterized in that: The filtering mechanism (9) comprises a filter frame (62), the filter frame (62) is in an inverted T-shape, and the filter frame (62) is fixed to the upper end of the base (1). A circulation pump (63), a purifier group (64), a filter cartridge (65), a controller (68) and a metering valve (69) are fixed on the filter frame (62). The liquid outlet end of the circulation pump (63) is connected to the filter cartridge (65) and the purifier group (64) in sequence through a connecting pipe (67). The connecting pipe (67) is provided with a metering valve (69). A sewage pipe (66) is provided on the side of the filter cartridge (65). The circulation pump (63) and the metering valve (69) are respectively electrically connected to the controller (68). The liquid outlet end of the purifier group (64) is connected to the liquid pipe (61).

8. A cooling water circulation centrifugal pump according to claim 7, characterized in that: The liquid inlet end of the mixing pump (5) is connected to a guide pipe (17) and an extraction pipe (27), and the liquid outlet end of the mixing pump (5) is respectively connected to an injection pipe (31) and a discharge pipe (29). The other end of the guide pipe (17) is connected to a main inlet pipe (16), and an injection pipe (18) is connected between the main inlet pipe (16) and one of the liquid connection holes (45) on the same side. A support pressure-stabilizing pipe (19) is connected between the main inlet pipe (16) and the first pressure-stabilizing support (21), a pressure-stabilizing connecting pipe (22) is connected between the first pressure-stabilizing support (21) and the second pressure-stabilizing support (23), a support pressure-stabilizing pipe (24) is connected to the second pressure-stabilizing support (23), and the end of the support pressure-stabilizing pipe (24) is connected to the main outlet pipe (28), and the main outlet pipe (28) is connected to one of the liquid connection holes (45) on the same side. A liquid outlet pipe (26) is connected between the liquid-passing connecting holes (45), the end of the injection pipe (31) is connected to one of the liquid-conducting through pipes (46) on one side, an overflow valve pipe (30) is provided on the extraction pipe (27), the end of the extraction pipe (27) is connected to one of the liquid-conducting through pipes (46) on the other side, the end of the discharge pipe (29) is connected to the main outlet pipe (28), one of the communication holes (41) on one side is connected to the coolant inlet pipe (20), and one of the communication holes (41) on the other side is connected to the coolant outlet pipe (25), the liquid inlet end of the circulation pump (63) is connected to the main outlet pipe (28) and the coolant outlet pipe (25), respectively, and the liquid outlet end of the liquid storage tank (59) is connected to the main inlet pipe (16) and the coolant inlet pipe (20).

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