A combined self-priming energy-saving pump for a centrifugal fan

Abstract

The present invention relates to the field of self-priming pumps, and specifically to a centrifugal fan combined self-priming energy-saving pump, which includes a servo motor. The output end of the servo motor is connected with a coupling, and the end of the coupling away from the servo motor is fitted with an intermediate shaft in an embedded manner; a bearing housing for supporting the intermediate shaft, and the inside of the bearing housing is in extrusion fit with the intermediate shaft; the end of the intermediate shaft away from the coupling is fixedly connected with a rotating shaft; a protective cover for protecting the rotating shaft, and the protective cover is fixedly connected to the outside of the bearing housing. For this centrifugal fan combined self-priming energy-saving pump, the liquid stored in the space enclosed by the fixed disk and the docking disk will be pushed into the pump body by the docking disk from the center of the fixed disk, so as to facilitate the introduction of liquid into the pump body, and the introduced liquid will be automatically replenished, making preparations for the next start of the pump, and there is no need to manually replenish water again.

Description

Technical Field

[0001] The present invention relates to the technical field of self-priming pumps, and particularly to a centrifugal fan combined self-priming energy-saving pump. Background Art

[0002] Self-priming pumps belong to self-priming centrifugal pumps, which have the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. The pipeline does not need to install a foot valve, and only a certain amount of priming liquid needs to be stored in the pump body before work. Different liquids can use self-priming pumps made of different materials.

[0003] There are the following problems with existing self-priming pumps: 1. Self-priming pumps rely on the vacuum degree in the pump cavity to suck in liquids. If too much liquid accumulates, it will occupy the space in the gas-liquid separation chamber or above the impeller, resulting in obstruction of vacuum formation and affecting the transportation and treatment of liquids; 2. Bubbles are generated due to the vaporization of liquids at high temperatures. When the bubbles enter the high-pressure area as the impeller rotates, they quickly burst, forming a high-frequency impact force (up to hundreds of megapascals). Repeatedly impacting the surface of the impeller will cause metal fatigue, honeycomb-shaped corrosion pits, and even penetrate the blades. Summary of the Invention

[0004] The present invention aims to provide a centrifugal fan combined self-priming energy-saving pump to solve the problems mentioned in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A centrifugal fan combined self-priming energy-saving pump, including a servo motor, the output end of the servo motor is connected with a coupling, and the end of the coupling away from the servo motor is fitted with an intermediate shaft;

[0006] A bearing bracket for supporting the intermediate shaft, the inside of the bearing bracket is press-fitted with the intermediate shaft;

[0007] The end of the intermediate shaft away from the coupling is fixedly connected with a rotating shaft;

[0008] A protective cover for protecting the rotating shaft, the protective cover is fixedly connected to the outside of the bearing bracket;

[0009] One end of the protective cover away from the bearing bracket is fixedly installed with a pump body;

[0010] An adjusting mechanism for maintaining a constant temperature during the transportation of liquids with higher viscosity, the adjusting mechanism is arranged inside the pump body;

[0011] A water adjusting mechanism for water replenishment and pressure relief inside the pump body, the water adjusting mechanism is fixedly installed on the outside of the pump body.

[0012] Preferably, the adjusting mechanism includes a filter screen, which is fixedly installed inside the pump body. The central part of the filter screen is rotatably connected to the rotating shaft. One end face of the filter screen is press-fitted with a first bearing, and a fan is press-fitted on the side of the first bearing away from the filter screen.

[0013] Preferably, a first shaft sleeve is fixedly connected to the outside of the rotating shaft. An internal track is fixedly installed on the outside of the first shaft sleeve. The top of the internal track is rotatable with the first bearing. An electric push rod is fixedly installed inside the internal track, and the output end of the electric push rod is fixedly connected to a nested rod.

[0014] Preferably, the nested rod is slidably fitted inside the internal track, and one end of the nested rod away from the electric push rod penetrates through the inside of the internal track and extends to the outside.

[0015] Preferably, a sliding rod is inserted into the fan. A return spring is fixedly connected to the outside of the sliding rod. One end of the return spring away from the sliding rod is fixedly connected to the fan;

[0016] One end of the sliding rod is press-fitted with the nested rod.

[0017] Preferably, a second bearing is press-fitted on the end of the fan away from the first bearing. The bottom of the second bearing is rotatably connected to a second shaft sleeve. One side of the second shaft sleeve away from the second bearing is fixedly connected to the rotating shaft;

[0018] A circulation hole is formed in the outside of the second shaft sleeve.

[0019] Preferably, an external connection disk is fixedly connected to the outside of the rotating shaft. The external connection disk is rotatably installed inside the pump body. A resilient strip is slidably fitted inside the external connection disk. One end of the resilient strip is press-fitted with the sliding rod.

[0020] Preferably, an impeller is fixedly installed on the outside of the external connection disk. An inner groove is formed in the impeller. An inner sliding strip is slidably fitted inside the inner groove. The inner sliding strip;

[0021] One end of the resilient strip away from the sliding rod is fixedly connected to the inner sliding strip.

[0022] Preferably, a through hole is formed in the outside of the pump body. A water inlet pipe is fixedly installed on the outside of the pump body. The through hole is communicated with the water inlet pipe and is used for water injection treatment of the pump body.

[0023] Preferably, the water adjustment mechanism includes a flange plate, which is installed on the outside of the pump body through fasteners. A water adjustment pipe is fixedly connected to the side of the flange plate away from the pump body. A one-way air valve and a water replenishing head are respectively fixedly installed on the top of the water adjustment pipe;

[0024] Among them, the one-way air valve only allows air to enter the water regulating pipe and does not allow air to exit.

[0025] The water replenishing head is used to replenish water in the water regulating pipe.

[0026] Preferably, a fixed disk is fixedly installed inside the water regulating pipe. One side of the fixed disk is squeezed and fitted with a sealing disk. One end of the sealing disk close to the fixed disk is fixedly connected with an inserting rod, and the inserting rod penetrates outside the fixed disk and extends to the other side.

[0027] Preferably, a spring is fixedly connected to one end of the fixed disk away from the sealing disk. One end of the spring away from the fixed disk is fixedly connected with a docking disk. The docking disk is slidably fitted inside the water regulating pipe, and the outside of the docking disk is fixedly connected with the inserting rod.

[0028] Preferably, annular supports are fixedly installed inside both the sealing disk and the docking disk. A closing plate is rotatably installed inside the annular support. The closing plate fills the internal spaces of the sealing disk and the docking disk respectively. A flexible connecting strip is fixedly connected to the outside of the closing plate.

[0029] Among them, both the closing plate and the flexible connecting strip have a certain degree of flexibility.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. The central part of the fixed disk originally blocked by the sealing disk will be opened. Then, the liquid stored in the space enclosed by the fixed disk and the docking disk will be pushed by the docking disk from the center of the fixed disk into the pump body, so as to facilitate the introduction of liquid into the pump body, and the liquid will be automatically replenished, making preparations for the next start of the pump, and there is no need to manually replenish water again.

[0032] 2. The impacted closing plate will deflect outward through the annular support, and then the excess liquid accumulated in the pump body will be discharged outward from the center of the docking disk, so as to play a role in discharging and pressing the excessive liquid in the pump body.

[0033] 3. Cold air flow will enter the inner groove, so as to avoid the generation of frictional force between the impeller and the viscous liquid during the mixing and transportation process, resulting in temperature rise, preventing cavitation phenomenon and damage to the impeller, and prolonging the service life of the equipment. In addition, the cold air flow will also cool the viscous liquid through the pump body, avoiding the generation of bubbles due to temperature rise and gasification. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1Schematic diagram of the external structure of a combined self-priming energy-saving pump for a centrifugal fan according to the present invention.

[0035] Figure 2 Schematic diagram of the partial sectional structure of the overall device of the present invention.

[0036] Figure 3 Schematic diagram of the partial sectional structure of the adjusting mechanism of the present invention.

[0037] Figure 4 Schematic diagram of the sectional structure of the central part of the adjusting mechanism of the present invention.

[0038] Figure 5 Enlarged schematic diagram of the sectional view of the central part of the adjusting mechanism of the present invention.

[0039] Figure 6 Full-sectional schematic diagram of the adjusting mechanism of the present invention.

[0040] Figure 7 Schematic diagram of the sectional structure of some components of the adjusting mechanism of the present invention.

[0041] Figure 8 Enlarged sectional schematic diagram of the first component of the adjusting mechanism of the present invention.

[0042] Figure 9 Enlarged sectional schematic diagram of the second component of the adjusting mechanism of the present invention.

[0043] Figure 10 Schematic diagram of the sectional structure of the cross-section of the adjusting mechanism of the present invention.

[0044] Figure 11 Schematic diagram of the ring-sectional structure of the impeller of the present invention.

[0045] Figure 12 Full-sectional schematic diagram of the pump body of the present invention.

[0046] Figure 13 Full-sectional schematic diagram of the water adjusting mechanism of the present invention.

[0047] Figure 14 Schematic diagram of the sectional structure of some components of the water adjusting mechanism of the present invention.

[0048] In the figure: 1, servo motor; 2, coupling; 3, intermediate shaft; 4, bearing bracket; 5, protective cover; 6, rotating shaft; 7, adjusting mechanism; 8, pump body; 9, water adjusting mechanism; 71, filter screen; 72, first bearing; 73, fan; 74, first shaft sleeve; 75, internal track; 76, electric push rod; 77, nested rod; 78, sliding rod; 79, return spring; 70, second bearing; 701, second shaft sleeve; 702, resilient strip; 703, external connecting plate; 704, impeller; 705, inner groove; 706, inner sliding strip; 707, through hole; 708, water inlet pipe; 91, flange; 92, water adjusting pipe; 93, one-way air valve; 94, water replenishing head; 95, fixed plate; 96, plugging plate; 97, inserting rod; 98, docking plate; 99, spring; 90, ring support; 901, closing plate; 902, resilient connecting strip. Detailed implementation manners

[0049] Next, in combination with the accompanying drawings and the detailed implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment. It should be known that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0050] Please refer to Figures 1 to 14 , the present invention provides a technical solution: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 shown, it includes a servo motor 1, the output end of the servo motor 1 is connected with a coupling 2, and the end of the coupling 2 far away from the servo motor 1 is fitted with an intermediate shaft 3 in an interference fit;

[0051] A bearing bracket 4 for supporting the intermediate shaft 3, the inside of the bearing bracket 4 is in interference fit with the intermediate shaft 3;

[0052] One end of the intermediate shaft 3 far away from the coupling 2 is fixedly connected with a rotating shaft 6;

[0053] The protective cover 5 for protecting the rotating shaft 6 is fixedly connected to the outside of the bearing bracket 4; when the servo motor 1 is started, the intermediate shaft 3 connected to its output end through the coupling 2 will rotate forward in the bearing bracket 4, and the other end of the intermediate shaft 3 is connected to the rotating shaft 6, so the rotating shaft 6 will rotate forward accordingly. In addition, the protective cover 5 is fixedly installed on the outside of the bearing bracket 4, and the protective cover 5 wraps the external space of the rotating shaft 6, thus playing a role in protecting it and ensuring gas circulation.

[0054] One end of the protective cover 5 far from the bearing bracket 4 is fixedly installed with a pump body 8;

[0055] The adjusting mechanism 7 for maintaining the constant-temperature transportation of liquids with relatively high viscosity is arranged inside the pump body 8;

[0056] The water adjusting mechanism 9 for water replenishment and pressure relief inside the pump body 8 is fixedly installed on the outside of the pump body 8.

[0057] The adjusting mechanism 7 includes a filter screen 71, the filter screen 71 is fixedly installed inside the pump body 8, the central part of the filter screen 71 is rotatably connected to the rotating shaft 6, one end face of the filter screen 71 is press-fitted with a first bearing 72, and one side of the first bearing 72 far from the filter screen 71 is press-fitted with a fan 73;

[0058] A first shaft sleeve 74 is fixedly connected to the outside of the rotating shaft 6, an internal track 75 is fixedly installed on the outside of the first shaft sleeve 74, the top of the internal track 75 is rotatable with the first bearing 72, and an electric push rod 76 is fixedly installed inside the internal track 75, and the output end of the electric push rod 76 is fixedly connected with a nested rod 77;

[0059] The nested rod 77 is slidably fitted inside the internal track 75, and one end of the nested rod 77 far from the electric push rod 76 penetrates through the inner side of the internal track 75 and extends to its outside;

[0060] A sliding rod 78 is inserted inside the fan 73, a return spring 79 is fixedly connected to the outside of the sliding rod 78, and one end of the return spring 79 far from the sliding rod 78 is fixedly connected to the fan 73;

[0061] One end of the sliding rod 78 is press-fitted with the nested rod 77;

[0062] One end of the fan 73 far from the first bearing 72 is press-fitted with a second bearing 70, the bottom of the second bearing 70 is rotatably connected with a second shaft sleeve 701, and one side of the second shaft sleeve 701 far from the second bearing 70 is fixedly connected to the rotating shaft 6;

[0063] Among them, a circulation hole is opened on the outside of the second shaft sleeve 701;

[0064] On the outer side of the rotating shaft 6, there is a fixedly connected outer connecting disc 703. The outer connecting disc 703 is rotatably installed inside the pump body 8. Inside the outer connecting disc 703, there is a resilient strip 702 that is slidably fitted. One end of the resilient strip 702 is in extrusion fit with the sliding rod 78.

[0065] On the outer side of the outer connecting disc 703, there is a fixedly installed impeller 704. Inside the impeller 704, there is an inner groove 705. Inside the inner groove 705, there is an inner sliding strip 706. On the outer side of the rotating shaft 6, there is a fixedly installed outer connecting disc 703, and on the outer side of the outer connecting disc 703, there is a fixedly installed impeller 704. Therefore, the impeller 704 will rotate forward. Before the servo motor 1 starts, the pump body 8 is filled with water first. After starting, the impeller 704 rotates at a high speed, causing the water in the impeller 704 channels to flow towards the volute. At this time, a vacuum is formed at the inlet, causing the inlet check valve to open. The air in the suction pipe enters the pump body 8 and reaches the outer edge through the impeller 704 channels.

[0066] One end of the resilient strip 702 away from the sliding rod 78 is fixedly connected to the inner sliding strip 706. When the self-priming pump needs to transport and process liquids with a relatively high viscosity, the electric push rod 76 is started, causing the nested rod 77 connected to its output end to extend outward along the internal track 75 and squeeze the sliding rod 78. At this time, the nested rod 77 will insert into the fan 73, and the sliding rod 78 will move inward and compress the return spring 79. The return spring 79 plays a role in resetting the sliding rod 78. As the sliding rod 78 moves inward, it will extend into the flow hole opened in the second shaft sleeve 701 and squeeze the resilient strip 702. The squeezed resilient strip 702 will extend into the inner groove 705 opened inside the impeller 704. Inside the inner groove 705, there is an inner sliding strip 706 that is slidably fitted. Therefore, the resilient strip 702 will push the inner sliding strip 706 to the other end of the inner groove 705.

[0067] A through hole 707 is provided on the outer side of the pump body 8, and a water inlet pipe 708 is fixedly installed on the outer side of the pump body 8. The through hole 707 is communicated with the water inlet pipe 708 and is used for water injection treatment of the pump body 8. The two ends of the fan 73 are respectively connected to the first bearing 72 and the second bearing 70. Therefore, the fan 73 is initially in a static state. However, as the nested rod 77 is inserted into the interior of the fan 73, the fan 73 is connected to the nested rod 77, the internal track 75, and the first bushing 74 as a whole. The inner side of the first bushing 74 is connected to the rotating shaft 6. Therefore, the fan 73 rotates forward together with the rotating shaft 6. Finally, the fan 73 blows the cold air flow in the protective cover 5 into the filter net 71. In addition, as the resilient strip 702 pushes the inner slider 706 to the other end of the inner groove 705, the inner groove 705 is in a hollow state. Subsequently, the cold air flow enters the inner groove 705, so as to prevent frictional heat generation between the two during the mixing and transportation of viscous liquid by the impeller 704, prevent cavitation phenomenon, damage to the impeller 704, and extend the service life of the equipment. In addition, the cold air flow also cools the viscous liquid through the pump body 8 to prevent the generation of bubbles due to temperature rise and gasification.

[0068] As Figure 13 and Figure 14 shown, the water regulation mechanism 9 includes a flange 91, which is installed on the outer side of the pump body 8 through fasteners. A water regulation pipe 92 is fixedly connected to the side of the flange 91 away from the pump body 8. A one-way air valve 93 and a water replenishing head 94 are respectively fixedly installed on the top of the water regulation pipe 92;

[0069] The one-way air valve 93 only allows air to enter the water regulation pipe 92 and does not allow air to exit;

[0070] The water replenishing head 94 is used for water replenishment treatment in the water regulation pipe 92;

[0071] A fixed disk 95 is fixedly installed inside the water regulation pipe 92. A sealing disk 96 is extrusion-fitted on one side of the fixed disk 95. One end of the sealing disk 96 close to the fixed disk 95 is fixedly connected to an insertion rod 97, and the insertion rod 97 penetrates through the outer side of the fixed disk 95 and extends to the other side thereof;

[0072] One end of the fixed disk 95 away from the plugging disk 96 is fixedly connected with a spring 99. One end of the spring 99 away from the fixed disk 95 is fixedly connected with a docking disk 98. The docking disk 98 is slidably fitted inside the water regulating pipe 92. The outer side of the docking disk 98 is fixedly connected with an insertion rod 97. Wherein, the outer side of the pump body 8 is connected with a flange plate 91 through a fastener, and the other side of the flange plate 91 is connected with the water regulating pipe 92. And a one-way air valve 93 and a water replenishing head 94 are respectively installed at the top of the water regulating pipe 92. The one-way air valve 93 is used for air exchange treatment and can only intake air and cannot exhaust air, while the water replenishing head 94 is connected with an external liquid guiding pipe. Before the impeller 704 starts, the operator only needs to push the docking disk 98 inward. At this time, the insertion rod 97 connected to the other end of the docking disk 98 will drive the plugging disk 96 to move inward. Therefore, the central part of the fixed disk 95 originally blocked by the plugging disk 96 will be opened. Then, the liquid stored in the space surrounded by the fixed disk 95 and the docking disk 98 will be pushed into the pump body 8 from the center of the fixed disk 95 by the docking disk 98, so as to facilitate the introduction of liquid into the pump body 8, and the liquid will be automatically replenished, making preparations for the next start of the pump, and there is no need to manually replenish water again.

[0073] Ring supports 90 are fixedly installed inside both the plugging disk 96 and the docking disk 98. A closing plate 901 is rotatably installed inside the ring support 90. The closing plate 901 fills the internal spaces of the plugging disk 96 and the docking disk 98 respectively. The outer side of the closing plate 901 is fixedly connected with a flexible connecting strip 902. After the liquid in the pump body 8 is filled, release the docking disk 98. At this time, under the elastic force of the spring 99, the docking disk 98 automatically resets and generates a suction force on the cavity surrounded by the fixed disk 95 and the docking disk 98. Then the one-way air valve 93 will open and supplement gas to this cavity, and at the same time the water replenishing head 94 will also open and supplement liquid to this cavity. In addition, when there is too much liquid accumulated inside the pump body 8, these liquids will impact and squeeze the closing plate 901. The impacted closing plate 901 will deflect outward through the ring support 90, and then the excess liquid accumulated in the pump body 8 will be discharged outward from the center of the docking disk 98, so as to play a role in discharging and pressing the excessive liquid in the pump body 8.

[0074] Both the closing plate 901 and the flexible connecting strip 902 have a certain degree of toughness. The closing plate 901 is made of a material with a relatively large density. Therefore, after the liquid is drained, it will reset itself by gravity, and there is a relatively large frictional relationship between the closing plate 901 and the ring support 90. In addition, the closing plate 901 can only deflect outward in one direction. Therefore, when the docking disk 98 is pushed inward and the water in the pump body 8 does not accumulate too much, the closing plate 901 will always maintain a vertical closed state.

[0075] When the present invention is in use: First, start the servo motor 1, so that the intermediate shaft 3 connected to its output end through the coupling 2 will rotate forward in the bearing housing 4. The other end of the intermediate shaft 3 is connected to the rotating shaft 6, so the rotating shaft 6 will rotate forward accordingly. In addition, a protective cover 5 is fixedly installed on the outside of the bearing housing 4, and the protective cover 5 wraps the external space of the rotating shaft 6. An outer connecting disc 703 is fixedly installed on the outside of the rotating shaft 6, and an impeller 704 is fixedly installed on the outside of the outer connecting disc 703, so the impeller 704 will rotate forward. The impeller 704 is driven by the servo motor 1 to rotate at a high speed. The liquid in the impeller 704 is thrown to the edge of the impeller 704 under the action of centrifugal force and is thrown into the volute of the pump body 8 through the channels between the blades. At this time, a low-pressure area is formed in the center of the impeller 704, and the vacuum degree can reach a certain level, which prompts the air in the water inlet pipe 708 to be sucked into the pump through the inlet of the impeller 704. The inhaled air is violently mixed with the pre-existing liquid in the impeller 704 to form a gas-liquid mixture similar to foam. The mixture obtains kinetic energy under the action of the impeller 704 and enters the gas-liquid separation chamber at the upper part of the pump body 8 at a high speed through the outlet of the impeller 704. After the gas-liquid mixture enters the separation chamber, due to the sudden expansion of the flow channel, the flow velocity is significantly reduced. The air has a small density and floats up from the liquid and is discharged out of the pump through the discharge pipe; the liquid has a large density and falls back to the inlet area of the impeller 704 under the action of gravity, and this cycle repeats. As the air is continuously discharged, the vacuum degree in the water inlet pipe 708 gradually increases, and the atmospheric pressure continuously presses the liquid in the water source into the water inlet pipe 708 until the pump is completely filled with liquid and enters the normal pumping state.

[0076] A flange plate 91 is connected to the outside of the pump body 8 through fasteners, and the other side of the flange plate 91 is connected to the water regulating pipe 92. A one-way air valve 93 and a water replenishing head 94 are respectively installed at the top of the water regulating pipe 92. The one-way air valve 93 is used for air exchange treatment and can only let air in and not out, while the water replenishing head 94 is connected to an external liquid guiding pipe. Before the impeller 704 is started, the operator only needs to push the docking plate 98 inward. At this time, the insertion rod 97 connected to the other end of the docking plate 98 will drive the blocking plate 96 to move inward, so the central part of the fixed plate 95 originally blocked by the blocking plate 96 will be opened. Then, the liquid stored in the space surrounded by the fixed plate 95 and the docking plate 98 will be pushed into the pump body 8 from the center of the fixed plate 95 by the docking plate 98.

[0077] After the liquid in the pump body 8 is filled up, release the docking plate 98. At this time, under the elastic force of the spring 99, the docking plate 98 automatically resets, and a suction force is generated in the cavity surrounded by the fixed plate 95 and the docking plate 98. Immediately afterwards, the one-way air valve 93 will open and supplement gas into this cavity. At the same time, the water replenishing head 94 will also open and supplement liquid into this cavity. In addition, when there is too much liquid accumulated inside the pump body 8, these liquids will impact and squeeze the closing plate 901. The impacted closing plate 901 will deflect outwards through the ring support 90, and then the excess liquid accumulated in the pump body 8 will be discharged outwards from the center of the docking plate 98.

[0078] The above-mentioned embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Those of ordinary skill in the art, starting from the above-mentioned concept, without creative labor, all kinds of transformations made fall within the scope of protection of the present invention.

Claims

1. A combined self-priming energy-saving pump for a centrifugal fan, characterized in that, Including: A servo motor, a coupling is connected to the output end of the servo motor, and an intermediate shaft is fitted and adapted at one end of the coupling away from the servo motor; A bearing bracket for supporting the intermediate shaft, the inside of the bearing bracket is extrusion-fitted with the intermediate shaft; One end of the intermediate shaft away from the coupling is fixedly connected to a rotating shaft; A protective cover for protecting the rotating shaft, the protective cover is fixedly connected to the outside of the bearing bracket; A pump body is fixedly installed at one end of the protective cover away from the bearing bracket; An adjusting mechanism for keeping the constant-temperature transportation of liquids with higher viscosity, the adjusting mechanism is arranged inside the pump body; A water adjusting mechanism for water supplement and pressure relief inside the pump body, the water adjusting mechanism is fixedly installed on the outside of the pump body; The adjusting mechanism includes a filter screen, the filter screen is fixedly installed inside the pump body, the central part of the filter screen is rotatably connected to the rotating shaft, one end face of the filter screen is extrusion-fitted with a first bearing, and a fan is extrusion-fitted on the side of the first bearing away from the filter screen; The water adjusting mechanism includes a flange, the flange is installed on the outside of the pump body through fasteners, a water adjusting pipe is fixedly connected to one side of the flange away from the pump body, and a one-way air valve and a water replenishing head are respectively fixedly installed on the top of the water adjusting pipe; Wherein the one-way air valve only allows air to enter the water adjusting pipe and does not allow air to exit; The water replenishing head is used for replenishing water into the water adjusting pipe; A first shaft sleeve is fixedly connected to the outside of the rotating shaft, an internal track is fixedly installed on the outside of the first shaft sleeve, the top end of the internal track rotates with the first bearing, and an electric push rod is fixedly installed inside the internal track, and an output end of the electric push rod is fixedly connected to a nested rod; The nested rod is slidably fitted inside the internal track, and one end of the nested rod away from the electric push rod penetrates through the inside of the internal track and extends to the outside thereof; A sliding rod is inserted into the fan, a return spring is fixedly connected to the outside of the sliding rod, and one end of the return spring away from the sliding rod is fixedly connected to the fan; One end of the sliding rod is extrusion-fitted with the nested rod; A fixed disk is fixedly installed inside the water adjusting pipe, a sealing disk is extrusion-fitted on one side of the fixed disk, a penetrating rod is fixedly connected to one end of the sealing disk close to the fixed disk, and the penetrating rod penetrates through the outside of the fixed disk and extends to the other side thereof; A spring is fixedly connected to one end of the fixed disk away from the sealing disk, a docking disk is fixedly connected to one end of the spring away from the fixed disk, the docking disk is slidably fitted inside the water adjusting pipe, and the outside of the docking disk is fixedly connected to the penetrating rod; Ring supports are fixedly installed inside the sealing disk and the docking disk, a closing plate is rotatably installed inside the ring support, the closing plate fills the internal spaces of the sealing disk and the docking disk respectively, and a tough connecting strip is fixedly connected to the outside of the closing plate; Wherein the closing plate and the tough connecting strip both have a certain toughness.

2. The combined self-priming energy-saving pump of a centrifugal fan according to claim 1, characterized in that: One end of the fan away from the first bearing is press-fitted with a second bearing. A second shaft sleeve is rotatably connected to the bottom of the second bearing. One side of the second shaft sleeve away from the second bearing is fixedly connected to the rotating shaft. A circulation hole is formed in the outer side of the second shaft sleeve.

3. The combined self-priming energy-saving pump of a centrifugal fan according to claim 1, wherein: An outer connecting disc is fixedly connected to the outer side of the rotating shaft. The outer connecting disc is rotatably installed inside the pump body. A resilient strip is slidably fitted inside the outer connecting disc. One end of the resilient strip is press-fitted with the sliding rod.

4. The combined self-priming energy-saving pump of a centrifugal fan according to claim 3, characterized in that: An impeller is fixedly installed on the outer side of the outer connecting disc. An inner groove is formed inside the impeller. An inner sliding strip is slidably fitted inside the inner groove. The inner sliding strip; One end of the resilient strip away from the sliding rod is fixedly connected to the inner sliding strip.

5. The combined self-priming energy-saving pump of a centrifugal fan according to claim 1, wherein: A through hole is formed in the outer side of the pump body. A water inlet pipe is fixedly installed on the outer side of the pump body. The through hole is communicated with the water inlet pipe and is used for water injection treatment of the pump body.

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