Centrifugal pump with adjustable heat dissipation capability

Abstract

The invention relates to the technical field of pumps, in particular to a centrifugal pump with adjustable heat dissipation capability, which comprises a motor, a pump shell, a water storage cover and the like, a pump shell is arranged in front of the motor; a water storage cover used for cooling the motor is arranged on the outer side of the motor, and the water storage cover and the outer side of the motor jointly form a water-cooling heat dissipation space. According to the invention, water transmitted in the pump shell is directly contacted with the motor shell and the heat dissipation fins, which is different from the prior art, so that the problem that the original heat dissipation effect of the heat dissipation fins is reduced because the heat dissipation fins are blocked by a cooling water pipe because the cooling water pipe is wound on the motor shell and the contact area between the heat dissipation fins and the outside is reduced is solved; and moreover, an existing heat dissipation mode that water transmitted in the pump shell is in direct contact with the motor shell and the heat dissipation fins is adopted is different, water does not circulate in the cooling water pipe to exchange heat dissipated by the heat dissipation fins, and the heat dissipation effect on the motor is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of pumps, and in particular to a centrifugal pump with adjustable heat dissipation capacity. Background Art

[0002] A self-priming centrifugal pump is a centrifugal pump that can automatically suck liquid when it is first started and work continuously. It combines the characteristics of an ordinary centrifugal pump and a self-priming function. It is suitable for occasions where liquid needs to be extracted from a lower liquid level or a closed container.

[0003] Since the motor on the existing self-priming centrifugal pump is air-cooled through the cooling fins of the casing, when the centrifugal pump is used in windless and hot weather, the outside temperature is high, and the outside airflow has a weaker ability to carry the heat on the fins. The cooling effect of the cooling fins on the motor is reduced, causing the motor on the centrifugal pump to overheat and overload, resulting in a reduction in the output power of the motor, and the flow rate and head of the centrifugal pump will also be reduced accordingly, which not only reduces the working efficiency of the centrifugal pump, but also aggravates the aging rate of the motor on the centrifugal pump and reduces the service life of the centrifugal pump. Summary of the invention

[0004] In order to overcome the disadvantage that when the existing self-priming centrifugal pump works in a high-temperature and windless environment, the motor on the centrifugal pump overheats and overloads, which aggravates the aging rate of the motor on the centrifugal pump and reduces the service life of the centrifugal pump, the present invention provides a centrifugal pump with adjustable heat dissipation capacity.

[0005] The technical implementation scheme of the present invention is: a centrifugal pump with adjustable heat dissipation capacity, including a motor and a pump casing; a pump casing is arranged on the front side of the motor; a water suction port is arranged on the pump casing; a water discharge port is arranged on the pump casing; it also includes a water storage cover, a transmission component and a cleaning component; a water storage cover for dissipating heat from the motor is arranged on the outside of the motor, and the water storage cover and the outside of the motor together form a water-cooled heat dissipation space; a transmission component for transmitting water flow is arranged on the pump casing; the transmission component is connected to the water storage cover; a cleaning component for ensuring smooth water inflow into the water-cooled heat dissipation space is arranged on the pump casing.

[0006] Furthermore, the transmission component includes a water inlet pipe, a liquid inlet pipe, a solenoid valve, an electric control valve, a water outlet pipe and an electric valve; the water inlet pipe is fixedly connected to and communicated with the drain port of the pump casing; the water inlet pipe is communicated with the water cooling and heat dissipation space; a filter is arranged inside the water inlet pipe; the water inlet pipe is fixedly connected to the solenoid valve; the liquid inlet pipe is fixedly connected to and communicated with the drain port of the pump casing; the liquid inlet pipe is also communicated with the water cooling and heat dissipation space; an interception net is arranged inside the liquid inlet pipe; the liquid inlet pipe is fixedly connected to the electric control valve; a number of water outlet pipes for discharging water in the water cooling and heat dissipation space are fixedly connected to the water storage cover; and an electric valve is fixedly connected to each water outlet pipe.

[0007] Furthermore, the water inlet pipe and the liquid inlet pipe extend to the rear inner side of the water storage cover, and the parts of the water inlet pipe and the liquid inlet pipe located on the inner side of the water storage cover are both provided with a plurality of equally spaced drainage holes.

[0008] Furthermore, the cleaning assembly includes a driving member, a movable cover, a connecting pipe and a transmission pipe; the driving member is fixedly connected to the pump housing; the telescopic end of the driving member is fixedly connected to a movable cover for switching the water inlet channel of the water-cooling heat dissipation space through a connecting rod, the connecting rod is slidably connected to the pump housing, and a sealing ring is provided at the connection between the connecting rod and the pump housing; the movable cover is located in the drain port; the water inlet pipe and the liquid inlet pipe are fixedly connected and connected to each other by a connecting pipe; the transmission pipe is fixedly connected to the pump housing; the transmission pipe is a rubber hose; the transmission pipe is connected to the movable cover; the other end of the transmission pipe is connected to the water suction port.

[0009] Furthermore, the outer side of the movable cover is arranged in a convex arc shape.

[0010] Furthermore, the filter screen and the interception screen are arranged at a position far away from the movable cover.

[0011] Furthermore, a protective layer is also included; the outer side of the portion of the transmission pipe located at the drain outlet is fixedly connected with a protective layer for protecting the transmission pipe.

[0012] Furthermore, it also includes a drying system, which includes a sealing cover and a sliding rod; a plurality of through holes are opened on the water storage cover; a plurality of sliding rods are slidably connected to the water storage cover; a plurality of sealing parts for sealing the through holes are provided on the sliding rod; a sealing cover for guiding airflow is fixedly connected to the rear side of all the sliding rods; and the sealing cover is located behind the motor.

[0013] Furthermore, it also includes scrapers; all the sliding rods are fixedly connected with a plurality of scrapers for cleaning the water storage cover and the heat dissipation fins; each scraper is provided with a plurality of ventilation grooves; each scraper is provided with a plurality of cleaning parts.

[0014] Furthermore, the front end of each sliding rod is configured to be spherical.

[0015] The present invention has the following advantages: the present invention enables the water transmitted in the pump housing to directly contact the motor housing and the heat dissipation fins, which is different from the existing method, and avoids the problem that the heat dissipation fins are blocked by the cooling water pipes due to the winding of the cooling water pipes in the motor housing, so that the contact area between the heat dissipation fins and the outside is reduced, resulting in the original heat dissipation effect of the heat dissipation fins being reduced. In addition, the present invention is different from the existing heat dissipation method of enabling the water transmitted in the pump housing to directly contact the motor housing and the heat dissipation fins, and does not allow the water to circulate in the cooling water pipes to exchange the heat dissipated by the heat dissipation fins, thereby enhancing the heat dissipation effect of the motor; The water inlet pipe and the liquid inlet pipe are switched with each other through the movable cover to ensure the water permeability of the filter and the interception net, prevent the water flow effect of the water inlet pipe and the liquid inlet pipe from gradually decreasing, avoid the water circulation in the water cooling space from gradually weakening, and ensure the heat dissipation effect of the motor; The protective layer is wrapped around the outside of the transmission pipe to protect the transmission pipe, preventing the sand and other granular impurities in the water flow from wearing the outside of the transmission pipe, thereby enhancing the protection effect of the transmission pipe, avoiding damage and leakage of the transmission pipe, and ensuring the backwashing effect of the filter and interception net; The airflow is passed through the water-cooling heat dissipation space through the sealing cover to dry the motor housing and the inner wall of the water storage cover, thereby preventing moisture from remaining between the motor housing and the heat dissipation fins, avoiding accelerated corrosion of the motor housing, and helping to extend the service life of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a first viewing angle stereoscopic structure of the present invention; Figure 2 It is a schematic diagram of a second viewing angle stereoscopic structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the motor, pump housing, water storage cover, transmission component, cleaning component and drying system combination of the present invention; Figure 4 It is a schematic diagram of the combined three-dimensional structure of the pump housing, water storage cover, transmission component and cleaning component of the present invention; Figure 5 It is a schematic diagram of the combined three-dimensional structure of the pump housing, transmission assembly and cleaning assembly of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the motor, water storage cover, transmission assembly and connecting pipe combination of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the motor, water storage cover, drying system and scraper assembly of the present invention.

[0017] The meanings of the reference numerals in the figure are: 1-motor, 1001-cooling fins, 1002-cooling holes, 2-pump housing, 2001-water inlet, 2002-drainage outlet, 2003-impeller, 3-water storage cover, 3001-through hole, 101-water inlet pipe, 10101-filter screen, 102-liquid inlet pipe, 10201-interception net, 103-solenoid valve, 104-electrically controlled valve, 105-water outlet pipe, 106-electric valve, 201-driving member, 202-movable cover, 203-connecting pipe, 204-transmission pipe, 205-protective layer, 301-blocking cover, 302-sliding rod, 30201-blocking part, 401-scraper, 40101-venting groove, 40102-cleaning part. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1 like Figure 1-Figure 6 As shown, a centrifugal pump with adjustable heat dissipation capacity includes a motor 1 and a pump housing 2; the pump housing 2 is arranged on the front side of the motor 1; a water inlet 2001 is arranged on the pump housing 2; a water outlet 2002 is arranged on the pump housing 2; an impeller 2003 is arranged inside the pump housing 2; a heat dissipation fin 1001 is arranged on the outside of the motor 1; a heat dissipation hole 1002 is arranged on the rear side of the motor 1; It also includes a water storage cover 3, a transmission component and a cleaning component; a water storage cover 3 is arranged on the outside of the motor 1, and the water storage cover 3 and the outside of the motor 1 together form a water-cooled heat dissipation space; a transmission component is arranged on the pump housing 2; the transmission component is connected to the water storage cover 3; and a cleaning component is arranged on the pump housing 2.

[0020] The transmission component includes a water inlet pipe 101, a liquid inlet pipe 102, a solenoid valve 103, an electric control valve 104, a water outlet pipe 105 and an electric valve 106; the water inlet pipe 101 is fixedly connected and communicated with the water outlet 2002 of the pump housing 2; the water inlet pipe 101 is communicated with the water cooling and heat dissipation space; a filter screen 10101 is arranged inside the water inlet pipe 101; the solenoid valve 103 is fixedly connected to the water inlet pipe 101; the liquid inlet pipe 102 is fixedly connected and communicated with the water outlet 2002 of the pump housing 2; the liquid inlet pipe 102 is also communicated with the water cooling and heat dissipation space; an interception net 10201 is arranged inside the liquid inlet pipe 102; the electric control valve 104 is fixedly connected to the liquid inlet pipe 102; two left-right symmetrical water outlet pipes 105 are fixedly connected to the water storage cover 3; and an electric valve 106 is fixedly connected to each water outlet pipe 105.

[0021] Furthermore, in order to allow the water to fully flow through the water-cooled heat dissipation space and enhance the heat dissipation effect of the water on the motor 1, the water inlet pipe 101 and the liquid inlet pipe 102 extend to the inner rear part of the water storage cover 3, and the parts of the water inlet pipe 101 and the liquid inlet pipe 102 located on the inner side of the water storage cover 3 are provided with a number of equally spaced drainage holes.

[0022] The cleaning assembly includes a driving member 201, a movable cover 202, a connecting pipe 203 and a transmission pipe 204; the driving member 201 is fixedly connected to the pump housing 2, and the driving member 201 is an electric push rod; the telescopic end of the driving member 201 is fixedly connected to the movable cover 202 through a connecting rod, the connecting rod is slidably connected to the pump housing 2, and a sealing ring is provided at the connection between the connecting rod and the pump housing 2; the movable cover 202 is located in the drain port 2002; the water inlet pipe 101 and the liquid inlet pipe 102 are fixedly connected and connected to each other with a connecting pipe 203; the transmission pipe 204 is fixedly connected to the pump housing 2; the transmission pipe 204 is a rubber hose; the transmission pipe 204 is connected to the movable cover 202; the other end of the transmission pipe 204 is connected to the water suction port 2001.

[0023] Furthermore, in order to ensure that the water in the drain port 2002 flows smoothly and to prevent the water from being blocked by the movable cover 202 and thus reducing the drainage efficiency, the outer side of the movable cover 202 is arranged in a convex arc shape.

[0024] Furthermore, it is also taken into consideration that when sand and other granular impurities in the water are stuck on the filter 10101 and the interception net 10201, in order to prevent the movable cover 202 from squeezing the sand and stone particles on the filter 10101 and the interception net 10201 when moving, to avoid the sand and stone particles squeezing the filter 10101 and the interception net 10201, and thereby avoid the filter 10101 and the interception net 10201 from being squeezed and damaged, the filter 10101 and the interception net 10201 are set away from the movable cover 202.

[0025] It also includes a protective layer 205 ; the protective layer 205 is fixedly connected to the outer side of the portion of the transmission pipe 204 located at the drain outlet 2002 .

[0026] The present invention introduces water in the pump housing 2 into the water storage cover 3 so that the water storage cover 3 performs water cooling on the housing of the motor 1, thereby solving the problem that the heat dissipation effect of the heat dissipation fins 1001 on the motor 1 is reduced due to the centrifugal pump working in a high-temperature and windless environment, and the motor 1 on the centrifugal pump is overheated and overloaded, resulting in abnormal problems of the centrifugal pump. The specific process is as follows: In the initial state, the interior of the pump casing 2 is in a water storage state. When the centrifugal pump is pumping water in a high temperature and windless environment, the motor 1 is first controlled to drive the impeller 2003 to rotate, and the water stored in the pump casing 2 is discharged to the outside through the drain port 2002. During this process, the water inside the pump casing 2 gradually decreases, and the waterless space gradually increases to generate negative pressure. Since the interior of the pump casing 2 is in a negative pressure state, the external atmospheric pressure will push the water into the pump casing 2 from the water pumping port 2001 through the external water pipe, thereby starting the pumping and drainage work.

[0027] When the water inside the pump housing 2 is discharged to the outside from the drain port 2002, the solenoid valve 103 is controlled to open, so that part of the water discharged from the drain port 2002 to the outside enters the water-cooling heat dissipation space formed by the water storage cover 3 and the outer side of the motor 1 through the water inlet pipe 101, and the water-cooling heat dissipation space is filled with water. While filling the water-cooling heat dissipation space with water, the electric valve 106 is controlled to open, and a suction force is generated through the water pumping port 2001 when the impeller 2003 is working, and the water inside the water-cooling heat dissipation space is sucked by the water outlet pipe 105, and the water inside the water-cooling heat dissipation space is pumped out by the water pumping port 2001 through the water outlet pipe 105, so that the water circulates in the water-cooling heat dissipation space, and then the motor 1 is water-cooled and the heat dissipation capacity of the motor 1 is enhanced. Compared with the existing method of winding a cooling water pipe around the outer shell of the motor 1 and making the water flow in the pump housing 2 flow through the cooling water pipe, the motor 1 is cooled. 1 shell to cool down the way, the present invention makes the water transmitted in the pump casing 2 directly contact with the motor 1 shell and the heat dissipation fins 1001, which is different from the existing, and avoids the cooling fins 1001 being blocked by the cooling water pipe due to the cooling water pipe wrapped around the motor 1 shell, so that the contact area between the cooling fins 1001 and the outside world is reduced, resulting in the problem of reduced original heat dissipation effect of the heat dissipation fins 1001. The present invention is different from the existing heat dissipation method of making the water transmitted in the pump casing 2 directly contact with the motor 1 shell and the heat dissipation fins 1001, and does not make the water circulate in the cooling water pipe to exchange the heat dissipated by the heat dissipation fins 1001, thereby enhancing the heat dissipation effect of the motor 1, preventing the motor 1 on the centrifugal pump from overheating and overloading when working in a high-temperature and windless environment, avoiding abnormalities of the centrifugal pump due to high temperature, and enhancing the protection effect of the centrifugal pump when working in a harsh environment.

[0028] It should be noted that a temperature sensor can be provided on the motor 1. When the centrifugal pump is pumping water at normal temperature, the solenoid valve 103 and the electric valve 106 are not opened, and water does not enter the water-cooling heat dissipation space formed by the water storage cover 3 and the outer side of the motor 1 through the water inlet pipe 101 for water cooling and heat dissipation. However, when the temperature sensor detects that the temperature of the motor 1 is too high or abnormally heated, the solenoid valve 103 and the electric valve 106 are opened, and water enters the water-cooling heat dissipation space formed by the water storage cover 3 and the outer side of the motor 1 through the water inlet pipe 101 for water cooling and heat dissipation. In this way, the motor 1 can dissipate heat well through its own cooling fan, and the water can be discharged to the outside through the drain port 2002 normally.

[0029] It is also considered that since the water pumped into the pump housing 2 contains impurities, whether it is the existing method of winding a cooling water pipe around the motor 1 housing and allowing the water in the pump housing 2 to flow through the cooling water pipe to cool the motor 1 housing, or the method of the present invention of allowing the water in the drain port 2002 to enter the water cooling and heat dissipation space from the water inlet pipe 101 for heat dissipation, when the water flows in the pipeline, the water will carry impurities into the water inlet pipe 101 (equivalent to the cooling water pipe in the existing heat dissipation method), causing the water inlet pipe 101 to be easily blocked. Therefore, when the water enters the water cooling and heat dissipation space from the water inlet pipe 101, the particulate impurities in the water are intercepted by the filter 10101 to avoid clogging of the water inlet pipe 101. However, it is considered that when the impurities intercepted on the filter 10101 are large, the water flow effect of the water inlet pipe 101 is gradually reduced, so that the water circulation in the water cooling and heat dissipation space is gradually weakened, resulting in a reduction in the heat dissipation effect of the motor 1. The specific solution process is as follows: When the filter screen 10101 is clogged by particulate impurities in the water, the control driving member 201 drives the movable cover 202 to move from the front side of the liquid inlet pipe 102 to the front side of the water inlet pipe 101 to block the water inlet pipe 101, and at the same time controls the solenoid valve 103 to block the water inlet pipe 101, and opens the electric control valve 104, so that the water flowing through the drain port 2002 enters the water cooling heat dissipation space from the liquid inlet pipe 102, thereby switching the water supply path of the water cooling heat dissipation space. When the water enters the liquid inlet pipe 102, the particulate impurities in the water are intercepted by the interception net 10201, and the water After passing through the interception net 10201, it enters the water-cooled heat dissipation space. In this process, the suction force generated by the impeller 2003 when working through the water pumping port 2001 acts on the movable cover 202 through the transmission pipe 204, so that the movable cover 202 sucks the water inlet pipe 101. At the same time, through the water pressure squeezed into the liquid inlet pipe 102 from the drain port 2002, part of the water entering the liquid inlet pipe 102 flows into the water inlet pipe 101 through the connecting pipe 203, and then is sucked from the water inlet pipe 101 to the movable cover 202, and finally is sucked to the pumping port 204. In the water inlet 2001, water is sucked from the water inlet pipe 101 into the movable cover 202, and the particulate impurities adhering to the front side of the filter screen 10101 are backwashed by the water flow from the back to the front, so that the water flow entrains the particulate impurities and is sucked into the water inlet 2001, so as to achieve efficient cleaning of the filter screen 10101. When the interception net 10201 is blocked by particulate impurities, the control driving member 201 drives the movable cover 202 to move from the front side of the water inlet pipe 101 to the front side of the liquid inlet pipe 102, blocks the liquid inlet pipe 102, and opens the solenoid valve 103. At the same time, Close the electric control valve 104, so that part of the water flowing through the water inlet pipe 101 enters the liquid inlet pipe 102 through the connecting pipe 203, and backwashes the interception net 10201. By switching the water inlet pipe 101 and the liquid inlet pipe 102, the water flow backwashes the filter 10101 and the interception net 10201, thereby ensuring the water permeability of the filter 10101 and the interception net 10201, preventing the water flow effect of the water inlet pipe 101 and the liquid inlet pipe 102 from gradually decreasing, avoiding the gradual weakening of the water circulation in the water-cooled heat dissipation space, and ensuring the heat dissipation effect of the motor 1.

[0030] It is also taken into consideration that when water flows through the drain outlet 2002, since the transmission pipe 204 is partially located in the drain outlet 2002, when water flows through the transmission pipe 204, particulate impurities such as sand and gravel in the water flow wear the outer side of the transmission pipe 204, making the transmission pipe 204 prone to damage and leakage, and unable to normally pump the water inlet pipe 101 and the liquid inlet pipe 102, resulting in unable to normally backwash the filter 10101 and the interception net 10201. The protective layer 205 is coated on the outer side of the transmission pipe 204 to protect the transmission pipe 204, prevent particulate impurities such as sand and gravel in the water flow from wearing the outer side of the transmission pipe 204, enhance the protection effect of the transmission pipe 204, avoid damage and leakage of the transmission pipe 204, and ensure the backwashing effect of the filter 10101 and the interception net 10201.

[0031] Example 2 On the basis of Example 1, Figure 1-Figure 3 and Figure 6-Figure 7 As shown, it also includes a drying system, which includes a sealing cover 301 and a sliding rod 302; a plurality of through holes 3001 that are symmetrical in the front and back are opened on the water storage cover 3; a plurality of sliding rods 302 are slidably connected to the water storage cover 3; a plurality of sealing parts 30201 are arranged on the sliding rod 302; a sealing cover 301 is fixedly connected to the rear side of all the sliding rods 302; the sealing cover 301 is located behind the motor 1.

[0032] It also includes a scraper 401; two scrapers 401 that are symmetrical on both sides are fixed to all the sliding rods 302; each scraper 401 is provided with a number of ventilation grooves 40101; each scraper 401 is provided with a number of cleaning parts 40102; each cleaning part 40102 is located between two adjacent heat dissipation fins 1001.

[0033] Furthermore, when the sliding rod 302 drives the scraper 401 to slide in the water-cooled heat dissipation space, the sliding rod 302 needs to repeatedly pass through the through hole 3001. In order to facilitate the sliding rod 302 to pass through the through hole 3001 located in the front, the front end of each sliding rod 302 is set to be spherical, which is used to guide the sliding rod 302 to pass through the through hole 3001 smoothly.

[0034] When the centrifugal pump is about to complete the pumping work, the solenoid valve 103 and the electric control valve 104 are controlled to be closed, the water supply to the water-cooled heat dissipation space is stopped, and the water inside the water-cooled heat dissipation space is pumped out by the water outlet 2001 through the outlet pipe 105. When the water inside the water-cooled heat dissipation space is completely discharged, the electric valve 106 is controlled to be closed to block the connection between the water-cooled heat dissipation space and the pump casing 2. Then the staff pushes the blocking cover 301 together with the sliding rod 302 forward to make the blocking cover 301 fit the heat dissipation hole 1002 on the rear side of the motor 1, and at the same time make the blocking part 30201 detach from the through hole 3001, so that the water-cooled heat dissipation space formed by the water storage cover 3 and the outer side of the motor 1 is connected with the space on the rear side of the motor 1 through the through hole 3001 on the rear side of the water storage cover 3 The water-cooled heat dissipation space formed at the same time is connected with the outside world through the through hole 3001 on the front side of the water storage cover 3, and enters the sealing cover 301 through the hot air flow blown out from the heat dissipation hole 1002 of the motor 1, and then enters the water-cooled heat dissipation space from the sealing cover 301 through the through hole 3001 on the rear side of the water storage cover 3, and finally blows out from the through hole 3001 on the front side of the water storage cover 3. The air flow flowing through the inside of the water-cooled heat dissipation space dries the motor 1 casing and the inner wall of the water storage cover 3 to prevent moisture from remaining between the motor 1 casing and the cooling fins 1001, thereby avoiding accelerated corrosion of the motor 1 casing, which is beneficial to extending the service life of the centrifugal pump. It should be noted that the hot air flow blown out from the heat dissipation hole 1002 is driven by the cooling fan in the motor 1, that is, when the centrifugal pump is about to complete the pumping work, the heat dissipation operation is only performed by the cooling fan provided by the motor 1.

[0035] It is also considered that after the motor 1 housing and the inner wall of the water storage cover 3 are dried, the microbial particles in the dried water form scale on the motor 1 housing and the inner wall of the water storage cover 3. The scale remains for a long time and is easy to corrode the motor 1 housing and the water storage cover 3, resulting in a shortened service life of the centrifugal pump. The specific solution process is as follows: When the motor 1 housing and the inner wall of the water storage cover 3 are dried, that is, the centrifugal pump completes the pumping work, the staff repeatedly pulls the blocking cover 301 to drive the sliding rod 302 to slide in the water cooling and heat dissipation space, so that the sliding rod 302 drives the scraper 401 to slide in the water cooling and heat dissipation space, and the scraper 401 is used to scrape off the grooves adhering to the inner wall of the water storage cover 3, and at the same time, the cleaning part 40102 is used to scrape off the grooves adhering to the motor 1 housing and the upper wall of the heat dissipation fin 1001, so as to prevent the scale from remaining for a long time and corroding the motor 1 housing and the water storage cover 3, and avoid shortening the service life of the centrifugal pump, and the scraped scale is loosely accumulated in the water storage cover 3. When the centrifugal pump is used next time, the loose scale is taken away by the circulating water flow entering the water cooling and heat dissipation space. It should be noted that when the airflow dries the motor 1 housing and the inner wall of the water storage cover 3, the airflow can pass through the ventilation groove 40101 and circulate normally in the water cooling and heat dissipation space, thereby ensuring the drying effect of the motor 1 housing and the inner wall of the water storage cover 3.

[0036] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application.

Claims

1. A centrifugal pump with adjustable heat dissipation capacity, comprising a motor (1) and a pump casing (2); the pump casing (2) is arranged on the front side of the motor (1); a water suction port (2001) is arranged on the pump casing (2); a water discharge port (2002) is arranged on the pump casing (2); wherein: It also includes a water storage cover (3), a transmission component and a cleaning component; a water storage cover (3) for dissipating heat from the motor (1) is arranged on the outside of the motor (1), and the water storage cover (3) and the outside of the motor (1) together form a water cooling and heat dissipation space; a transmission component for transmitting water flow is arranged on the pump housing (2); the transmission component is connected to the water storage cover (3); and a cleaning component for ensuring smooth water inflow into the water cooling and heat dissipation space is arranged on the pump housing (2).

2. A centrifugal pump with adjustable heat dissipation capacity according to claim 1, characterized in that: The transmission component comprises a water inlet pipe (101), a liquid inlet pipe (102), a solenoid valve (103), an electric control valve (104), a water outlet pipe (105) and an electric valve (106); the water inlet pipe (101) is fixedly connected to and communicated with the water outlet (2002) of the pump housing (2); the water inlet pipe (101) is communicated with the water cooling heat dissipation space; a filter screen (10101) is arranged inside the water inlet pipe (101); the solenoid valve (103) is fixedly connected to the water inlet pipe (101); the pump A liquid inlet pipe (102) is fixedly connected to and communicated with the water outlet (2002) of the shell (2); the liquid inlet pipe (102) is also communicated with the water cooling and heat dissipation space; an interception net (10201) is arranged inside the liquid inlet pipe (102); an electric control valve (104) is fixedly connected to the liquid inlet pipe (102); a plurality of water outlet pipes (105) for discharging water in the water cooling and heat dissipation space are fixedly connected to the water storage cover (3); and each water outlet pipe (105) is fixedly connected to an electric valve (106).

3. A centrifugal pump with adjustable heat dissipation capacity according to claim 2, characterized in that: The water inlet pipe (101) and the liquid inlet pipe (102) extend to the inner rear portion of the water storage cover (3), and portions of the water inlet pipe (101) and the liquid inlet pipe (102) located on the inner side of the water storage cover (3) are both provided with a plurality of equally spaced drainage holes.

4. A centrifugal pump with adjustable heat dissipation capacity according to claim 3, characterized in that: The cleaning assembly comprises a driving member (201), a movable cover (202), a connecting pipe (203) and a transmission pipe (204); the driving member (201) is fixedly connected to the pump housing (2); the telescopic end of the driving member (201) is fixedly connected to the movable cover (202) for switching the water inlet flow channel of the water cooling heat dissipation space through a connecting rod, the connecting rod is slidably connected to the pump housing (2), and a sealing ring is provided at the connection between the connecting rod and the pump housing (2); the movable cover (202) is located in the drain port (2002); a connecting pipe (203) is fixedly connected and mutually connected between the water inlet pipe (101) and the liquid inlet pipe (102); the transmission pipe (204) is fixedly connected to the pump housing (2); the transmission pipe (204) is a rubber hose; the transmission pipe (204) is connected to the movable cover (202); the other end of the transmission pipe (204) is connected to the water pumping port (2001).

5. A centrifugal pump with adjustable heat dissipation capacity according to claim 4, characterized in that: The outer side of the movable cover (202) is arranged in a convex arc shape.

6. A centrifugal pump with adjustable heat dissipation capacity according to claim 5, characterized in that: The filter screen (10101) and the interception screen (10201) are arranged at a position away from the movable cover (202).

7. A centrifugal pump with adjustable heat dissipation capacity according to claim 4, characterized in that: It also includes a protective layer (205); the protective layer (205) for protecting the transmission pipe (204) is fixedly connected to the outer side of the portion of the transmission pipe (204) located at the drain outlet (2002).

8. A centrifugal pump with adjustable heat dissipation capacity according to claim 1, characterized in that: The invention also comprises a drying system, which comprises a blocking cover (301) and a sliding rod (302); a plurality of through holes (3001) are provided on the water storage cover (3); a plurality of sliding rods (302) are slidably connected to the water storage cover (3); a plurality of blocking portions (30201) for blocking the through holes (3001) are provided on the sliding rods (302); a blocking cover (301) for guiding airflow is fixedly connected to the rear side of all the sliding rods (302); and the blocking cover (301) is located behind the motor (1).

9. A centrifugal pump with adjustable heat dissipation capacity according to claim 8, characterized in that: It also includes a scraper (401); a plurality of scrapers (401) for cleaning the water storage cover (3) and the heat dissipation fins (1001) are fixedly connected to all the sliding rods (302); a plurality of ventilation grooves (40101) are provided on each scraper (401); and a plurality of cleaning portions (40102) are provided on each scraper (401).

10. A centrifugal pump with adjustable heat dissipation capacity according to claim 9, characterized in that: The front end of each sliding rod (302) is configured to be spherical.

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