Self-priming pump and exhaust mechanism thereof

Abstract

The invention discloses a self-priming pump and an exhaust mechanism thereof, and belongs to the technical field of self-priming pumps, the self-priming pump comprises a base, one side of the top of the base is fixedly provided with a water storage tank, one side of the water storage tank is fixedly connected with a first connecting pipe, and the outer wall of the first connecting pipe is fixedly provided with a second valve; a second connecting pipe is fixedly connected to the other side of the water storage tank, a third valve is fixedly installed on the outer wall of the second connecting pipe, a shell is fixedly connected to the center of the top of the base, and a pump shell is fixedly connected to one side of the shell. By designing the water storage tank assembly, water is directly conveyed into the pump shell through the water tank before the pump body is started every time, the water in the water tank can be used repeatedly, the pump body does not need to be started every time for water adding, the fatigue strength of workers is reduced, and time and labor are saved.

Description

Technical Field

[0001] The invention belongs to the technical field of self-priming pumps, and in particular relates to a self-priming pump and an exhaust mechanism thereof. Background Art

[0002] A self-priming pump is a pump with a self-priming function. It can automatically expel air or gas in the suction pipe when starting and form a continuous water flow to achieve the purpose of pumping liquid without the need for an external auxiliary water source or pre-filling. The air in the pump casing needs to be discharged during startup to avoid idling during startup. If there is insufficient liquid in the pump body, the pump may not start normally or even be damaged. The self-priming pump can automatically extract the air in the suction pipe and discharge it outside the pump through a specially designed impeller and pump body structure, forming a vacuum or low-pressure area. At this time, external water begins to enter the pump casing and fill the internal space. Once the water in the pump casing is completely filled, the water in the pump casing provides a good working medium for the impeller, so that the pump impeller can smoothly promote the flow of liquid, avoiding interference from gas or air, and the efficiency and flow rate of the pump can be kept stable.

[0003] Before each start-up of the self-priming pump, it is necessary to fill water and exhaust the air. The existing self-priming pump is filled with water manually, and each time it is filled with water, the staff manually operates step by step: after the pump casing is filled with water, the self-priming pump is started, the air inlet pipe valve is opened first, and the impeller rotates to extract the gas in the pump chamber and discharge it through the exhaust pipe. When the exhaust pipe discharges the water, it means that the gas in the pump chamber has been completely discharged. However, the whole process requires multiple operations by the staff, which is inefficient, and the existing self-priming pump has poor heat dissipation effect, which greatly reduces the service life of the self-priming pump. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a self-priming pump and an exhaust mechanism thereof.

[0005] The technical solution adopted to solve the above technical problems is: a self-priming pump, comprising a base, a water storage tank is fixedly installed on one side of the top of the base, a first connecting pipe is fixedly connected to one side of the water storage tank, and a second valve is fixedly installed on the outer wall of the first connecting pipe; A second connecting pipe is fixedly connected to the other side of the water storage tank, a third valve is fixedly installed on the outer wall of the second connecting pipe, a housing is fixedly connected to the top center of the base, and a pump housing is fixedly connected to one side of the housing; The center of the housing is rotatably connected to a pump shaft, one end of the outer wall of the pump shaft is fixedly mounted with an impeller, one end of the impeller is provided with a fixed head, one end of the pump shaft is fixedly connected to a connecting shaft, the outer wall of the connecting shaft is fixedly mounted with a feeding screw, a sealing seat is mounted at the center of the pump shaft, and one end of the sealing seat is fixedly connected with a connecting ring; An exhaust assembly is installed on the other side of the pump housing, a cooling mechanism is installed on the outer wall of the pump shaft, a heat dissipation mechanism is installed on the inner wall of the other side of the pump housing, a coupling is fixedly connected to the other end of the pump shaft, a motor is fixedly installed on the other side of the top of the base, and the other end of the coupling is fixedly connected to the motor output shaft.

[0006] Furthermore, an air inlet pipe is fixedly connected to the top of the water storage tank, a first valve is fixedly installed on the outer wall of the air inlet pipe, and a water level alarm is installed at the inner bottom end of the water storage tank.

[0007] Through the above technical solution, when it is necessary to deliver water to the pump casing, the third valve and the first valve are opened first, and the motor drives the coupling to rotate, thereby driving the pump shaft to rotate, thereby driving the impeller and the connecting shaft to rotate, thereby driving the feeding screw to rotate. When the feeding screw rotates, air is pumped out of the water tank, and water in the water tank is extracted through the second connecting pipe. When a certain amount of water is pumped out of the pump casing, the first valve is closed and the second valve is opened. At this time, the water in the water tank is transported to the first connecting pipe, squeezing the gas in the water pipe connected thereto, so that the impeller can pump water quickly, reducing the exhaust time and improving the pumping efficiency. rate. When the gas in the pump casing is discharged completely, the impeller continues to pump water steadily, and the water level in the water tank remains unchanged. After the pumping work is completed, the second valve and the third valve are closed. At this time, the water in the water tank can continue to provide water in the pump casing for the next work. When the water level in the water tank touches the water level alarm, the water level alarm sounds an alarm. At this time, the water in the water tank cannot be provided to the pump casing, prompting the staff to add water to the water tank. The staff can add water to the water tank through the air inlet pipe, and there is no need to start the pump body to add water every time, which reduces the fatigue intensity of the staff and saves time and effort.

[0008] Furthermore, a third connecting pipe is fixedly connected to one side of the pump housing, a fourth connecting pipe is fixedly connected to the top of the pump housing, a fourth valve is fixedly installed on the outer wall of the fourth connecting pipe, a liquid outlet pipe is fixedly connected to the bottom of the pump housing, and a fifth valve is fixedly installed on the outer wall of the liquid outlet pipe.

[0009] Through the above technical solution, when water needs to be transported, the fourth valve is opened, the impeller and the feeding screw rotate to extract water from the water storage tank, and transport it to the pump casing through the third connecting pipe, and then transported to the fourth connecting pipe through the centrifugal force of the impeller rotation. After the water is pumped, in order to prevent the residual water from forming scale in the pump body or corroding the internal parts of the pump, it needs to be discharged. The staff opens the fifth valve to discharge the residual water in the pump casing, thereby increasing the service life of the internal parts of the pump.

[0010] Furthermore, one end of the third connecting tube is fixedly connected to the second connecting tube, and the connecting shaft and the feeding screw are both located in the third connecting tube.

[0011] Through the above technical solution, when water is injected into the pump casing, the water injection efficiency is improved through the suction pressure of the feeding screw, thereby reducing the idling time of the impeller, and further reducing the damage to the impeller caused by idling.

[0012] Furthermore, the heat dissipation mechanism includes a fixed gear ring fixedly connected to the inner wall on the other side of the pump casing, the outer wall of the pump shaft is fixedly connected to the driving gear, the outer wall of the pump shaft is fixedly installed with a bearing near the fixed gear ring, the outer wall of the bearing is fixedly connected to a movable frame, a plurality of gear shafts are rotatably connected to the movable frame, the outer wall centers of the plurality of gear shafts are fixedly connected to movable gears, one ends of the outer walls of the plurality of gear shafts are fixedly connected to fan blades, and the plurality of movable gears are respectively meshed with the fixed gear ring and the driving gear.

[0013] Through the above technical solution, when water is injected into the exhaust component and the pump body operates normally, the pump shaft rotates to drive the driving gear to rotate, so that the driving gear rotation drives multiple movable gears to rotate, and at the same time, the multiple movable gears rotate under the meshing of the fixed gear ring, so that the multiple movable gears rotate and revolve, and the fan blades rotate and revolve, thereby realizing heat dissipation of the exhaust component and the cooling mechanism, thereby improving the heat dissipation effect of the pump shaft and increasing the service life of the pump body.

[0014] A self-priming pump exhaust mechanism comprises an exhaust component and a cooling mechanism, the exhaust component comprises a discharge pipe fixedly connected to the other side of the pump casing, one end of the outer wall of the discharge pipe is fixedly connected to a sixth valve, the other end of the outer wall of the discharge pipe is fixedly connected to the exhaust pipe, the bottom end of the inner wall of the exhaust pipe is fixedly connected to a breathable plate, a movable cap is provided at the center of the breathable plate, a movable rod is fixedly connected to the top center of the movable cap, a spring is fixedly connected to the top of the movable cap and located on the outside of the movable rod, a fixing frame is fixedly connected to the top end of the inner wall of the exhaust pipe, the movable rod passes through the center of the fixing frame, when the pump casing needs to be exhausted, the fourth valve is closed and the sixth valve is opened, and under the rotation of the impeller, the gas in the pump casing passes through the exhaust pipe The liquid pipe is transported toward the cooling mechanism. When the gas in the cooling mechanism is full, the gas is transported toward the exhaust pipe. Under the action of pressure, the movable cap is pushed. Under the action of the spring, the movable cap moves upward, so that the gas is transported to the outside through the fixed frame to complete the exhaust. When the gas in the pump casing is emptied, the water in the pump casing is transported to the cooling mechanism through the drain pipe. The movable cap is pushed by the same principle. When the staff sees water floating through the exhaust pipe, it means that the drain pipe and the cooling mechanism are full of water. At this time, the sixth valve is closed, and the exhaust work of the pump body is completed. The staff does not need to rotate and adjust it many times, and the water discharged with the gas in the pump casing can flow to the cooling mechanism as coolant, thereby improving the cooling effect on the pump body, and the functionality is strong.

[0015] Furthermore, the cooling mechanism includes a cooling tube arranged on the outer wall of the pump shaft, both ends of the cooling tube are fixedly connected with threaded pipe heads, one of the threaded pipe heads is threadedly connected with a fixing ring, a circulating screw is provided at the center of the cooling tube, one end of the outer wall of the cooling tube is fixedly connected with a water inlet pipe, the other end of the outer wall of the cooling tube is fixedly connected with a water outlet pipe, and the outer wall of the cooling tube is provided with a spiral tube.

[0016] Through the above technical scheme, the water in the discharge pipe is transported to the cooling pipe through the water inlet pipe. When the pump shaft rotates, it drives the circulation screw to rotate, and transports the water in the cooling pipe to the water outlet pipe, and then to the spiral pipe. When the circulation screw continues to rotate, the water in the spiral pipe flows into the discharge pipe through the other end. Since the outlet of the exhaust pipe is higher than the highest water level of the spiral pipe, the water in the exhaust pipe will not overflow. The water in the cooling pipe cools the pump shaft. At the same time, under the action of the heat dissipation mechanism, the spiral pipe dissipates heat to the water in the cooling pipe, thereby improving the heat dissipation effect on the pump shaft.

[0017] Furthermore, one end of the drain pipe is fixedly connected to the water inlet pipe, one end of the spiral tube is fixedly connected to the water outlet pipe, and the other end of the spiral tube is fixedly connected to a position on the outer wall of the drain pipe close to one side of the exhaust pipe.

[0018] Through the above technical solution, the liquid discharge pipe is transported to the cooling pipe through the water inlet pipe, and the cooling pipe is transported to the spiral pipe through the water outlet pipe.

[0019] Furthermore, another of the threaded pipe heads is threadedly connected to the connecting ring.

[0020] Through the above technical solution, the fixation of the cooling tube is improved, and when the cooling tube is disassembled, it is only necessary to rotate the connecting ring and then rotate the cooling tube again to achieve disassembly.

[0021] The beneficial effects of the present invention are as follows: (1) The present invention designs a water storage tank assembly. Before each start of the pump body, water is directly transported to the pump casing through the water tank, and the water in the water tank can be used multiple times. There is no need to add water each time the pump body is started, thereby reducing the fatigue of the staff and saving time and effort; (2) The present invention designs an exhaust assembly and a cooling mechanism. When exhausting, the staff does not need to manually add water, and the water discharged from the pump casing and the gas can flow into the cooling mechanism as a coolant, thereby improving the cooling effect on the pump body and having strong functionality; (3) The present invention designs a cooling mechanism, which can dissipate heat from the exhaust assembly and the cooling mechanism, thereby improving the heat dissipation effect on the pump shaft and increasing the service life of the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall appearance diagram of the present invention; Figure 2 It is the overall front view of the present invention; Figure 3is an overall cross-sectional view of the present invention; Figure 4 is a schematic diagram of the exhaust assembly structure of the present invention; Figure 5 It is a schematic diagram of the structure of the fixing frame of the present invention; Figure 6 It is a schematic structural diagram of the heat dissipation mechanism of the present invention from a first viewing angle; Figure 7 is a schematic structural diagram of the heat dissipation mechanism of the present invention from a second viewing angle; Figure 8 for Figure 3 A partial enlarged view of the middle A; Fig. 9 for Figure 3 A partial enlarged view of point B in the middle.

[0023] Figure numerals: 1, base; 2, water storage tank; 21, air inlet pipe; 22, first valve; 23, water level alarm; 3, first connecting pipe; 4, second valve; 5, second connecting pipe; 51, third valve; 6, outer shell; 7, pump shell; 71, third connecting pipe; 72, fourth connecting pipe; 73, fourth valve; 74, liquid outlet pipe; 75, fifth valve; 8, pump shaft; 9, impeller; 10, fixed head; 11, connecting shaft; 12, feeding screw; 13, sealing seat; 131, connecting ring; 14, exhaust assembly; 1401, discharge pipe; 1402, sixth valve; 1403, exhaust Tube; 1404, breathable plate; 1405, movable cap; 1406, movable rod; 1407, spring; 1408, fixed frame; 15, cooling mechanism; 1501, cooling tube; 1502, threaded pipe head; 1503, fixed ring; 1504, circulating screw; 1505, water inlet pipe; 1506, water outlet pipe; 1507, spiral tube; 16, heat dissipation mechanism; 1601, fixed gear ring; 1602, driving gear; 1603, bearing; 1604, movable frame; 1605, gear shaft; 1606, movable gear; 1607, fan blade; 17, coupling; 18, motor. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] like Figure 1-Figure 3As shown, a self-priming pump of the present embodiment comprises a base 1, a water storage tank 2 is fixedly mounted on one side of the top of the base 1, an air inlet pipe 21 is fixedly connected to the top of the water storage tank 2, a first valve 22 is fixedly mounted on the outer wall of the air inlet pipe 21, a water level alarm 23 is mounted on the inner bottom of the water storage tank 2, when it is necessary to deliver water to the pump casing 7, first open the third valve 51 and the first valve 22, the motor 18 drives the coupling 17 to rotate, thereby driving the pump shaft 8 to rotate, thereby driving the impeller 9 and the connecting shaft 11 to rotate, thereby driving the feeding screw 12 to rotate, when the feeding screw 12 rotates, the water storage tank 2 is evacuated, and the water in the water storage tank 2 is extracted through the second connecting pipe 5, when the water in the pump casing 7 is pumped to a certain amount, the first valve 22 is closed, and the second valve 4 is opened, at this time the water in the water storage tank 2 The gas is transported to the first connecting pipe 3, squeezing the gas in the water pipe connected to it, so that the impeller 9 can pump water quickly, reducing the exhaust time and improving the pumping efficiency. When the gas in the pump casing 7 is discharged, the impeller 9 continues to pump water stably, and the water level in the water tank 2 does not change. After the pumping work is completed, the second valve 4 and the third valve 51 are closed. At this time, the water in the water tank 2 can continue to provide water in the pump casing 7 for the next work. When the water level in the water tank 2 touches the water level alarm 23, the water level alarm 23 sounds an alarm. At this time, the water in the water tank 2 cannot be provided to the pump casing 7, prompting the staff to add water to the water tank 2. The staff can add water to the water tank 2 through the air inlet pipe 21, and there is no need to start the pump body to add water every time, which reduces the fatigue intensity of the staff and saves time and effort.

[0026] like Figure 1-Figure 3As shown, a first connecting pipe 3 is fixedly connected to one side of the water storage tank 2, a second valve 4 is fixedly installed on the outer wall of the first connecting pipe 3, a second connecting pipe 5 is fixedly connected to the other side of the water storage tank 2, a third valve 51 is fixedly installed on the outer wall of the second connecting pipe 5, a shell 6 is fixedly connected to the top center of the base 1, a pump shell 7 is fixedly connected to one side of the shell 6, a third connecting pipe 71 is fixedly connected to one side of the pump shell 7, a fourth connecting pipe 72 is fixedly connected to the top of the pump shell 7, a fourth valve 73 is fixedly installed on the outer wall of the fourth connecting pipe 72, a liquid outlet pipe 74 is fixedly connected to the bottom of the pump shell 7, a fifth valve 75 is fixedly installed on the outer wall of the liquid outlet pipe 74, when water needs to be transported, the fourth valve 73 is opened, the impeller 9 and the feeding screw 12 rotate to extract water from the water storage tank 2, and the water is transported to the pump shell 7 through the third connecting pipe 71, and then transported to the fourth connecting pipe 72 through the centrifugal force of the rotation of the impeller 9. After the water is pumped, in order to prevent the residual water from forming scale in the pump body or corroding the internal parts of the pump, it needs to be discharged. When personnel open the fifth valve 75, the water remaining in the pump casing 7 is discharged to increase the service life of the internal parts of the pump. One end of the third connecting pipe 71 is fixedly connected to the second connecting pipe 5. The connecting shaft 11 and the feeding screw 12 are both located in the third connecting pipe 71. When water is injected into the pump casing 7, the pumping pressure of the feeding screw 12 is used to improve the water injection efficiency, thereby reducing the idling time of the impeller 9 and further reducing the damage caused by idling to the impeller 9. The central rotation of the outer casing 6 is connected to the pump shaft 8, and one end of the outer wall of the pump shaft 8 is fixedly installed with An impeller 9 is provided with a fixed head 10 at one end of the impeller 9, a connecting shaft 11 is fixedly connected to one end of the pump shaft 8, a feeding screw 12 is fixedly installed on the outer wall of the connecting shaft 11, a sealing seat 13 is installed in the center of the pump shaft 8, a connecting ring 131 is fixedly connected to one end of the sealing seat 13, an exhaust assembly 14 is installed on the other side of the pump housing 7, a coupling 17 is fixedly connected to the other end of the pump shaft 8, a motor 18 is fixedly installed on the other side of the top of the base 1, and the other end of the coupling 17 is fixedly connected to the output shaft of the motor 18.

[0027] like Figure 1-Figure 7As shown, a heat dissipation mechanism 16 is installed on the inner wall of the other side of the pump housing 7, and the heat dissipation mechanism 16 includes a fixed gear ring 1601 fixedly connected to the inner wall of the other side of the pump housing 7, and the outer wall of the pump shaft 8 is fixedly connected to a driving gear 1602, and the outer wall of the pump shaft 8 is fixedly installed with a bearing 1603 near the fixed gear ring 1601, and the outer wall of the bearing 1603 is fixedly connected to a movable frame 1604, and a plurality of gear shafts 1605 are rotatably connected to the movable frame 1604, and the outer wall centers of the plurality of gear shafts 1605 are fixedly connected to movable gears 1606, and one end of the outer wall of the plurality of gear shafts 1605 is fixedly connected to a fan blade 1607, and the plurality of movable gear shafts 1605 are fixedly connected to the outer wall of the plurality of gear shafts 1605. The wheel 1606 is respectively meshed with the fixed gear ring 1601 and the driving gear 1602. When water is injected into the exhaust component 14 and the pump body is operating normally, the pump shaft 8 rotates to drive the driving gear 1602 to rotate, so that the driving gear 1602 rotates to drive multiple movable gears 1606 to rotate. At the same time, the multiple movable gears 1606 rotate under the meshing of the fixed gear ring 1601, so that the multiple movable gears 1606 rotate and revolve, and the fan blades 1607 rotate and revolve, thereby realizing heat dissipation of the exhaust component 14 and the cooling mechanism 15, thereby improving the heat dissipation effect of the pump shaft 8 and improving the service life of the pump body.

[0028] like Figure 1-Figure 8As shown, an exhaust mechanism of a self-priming pump includes an exhaust component 14 and a cooling mechanism 15, the exhaust component 14 includes a discharge pipe 1401 fixedly connected to the other side of the pump casing 7, one end of the outer wall of the discharge pipe 1401 is fixedly connected to the sixth valve 1402, the other end of the outer wall of the discharge pipe 1401 is fixedly connected to the exhaust pipe 1403, the bottom end of the inner wall of the exhaust pipe 1403 is fixedly connected to a breathable plate 1404, the center of the breathable plate 1404 is provided with a movable cap 1405, the top center of the movable cap 1405 is fixedly connected to a movable rod 1406, the top of the movable cap 1405 and the outside of the movable rod 1406 are fixedly connected with a spring 1407, the top of the inner wall of the exhaust pipe 1403 is fixedly connected to a fixing frame 1408, the movable rod 1406 runs through the center of the fixing frame 1408, when the pump casing 7 needs to be exhausted, the fourth valve 73 is closed, the sixth valve 1402 is opened, and under the rotation of the impeller 9, the pump The gas in the shell 7 is transported toward the cooling mechanism 15 through the drain pipe 1401. When the gas in the cooling mechanism 15 is full, the gas is transported toward the exhaust pipe 1403. Under the action of pressure, the movable cap 1405 is pushed. Under the action of the spring 1407, the movable cap 1405 moves upward, so that the gas is transported to the outside through the fixed frame 1408 to complete the exhaust. When the gas in the pump shell 7 is emptied, the water in the pump shell 7 is transported to the cooling mechanism 15 through the drain pipe 1401. The movable cap 1405 is pushed by the same principle. When the staff passes through the exhaust pipe 1403 and there is water floating, it means that the drain pipe 1401 and the cooling mechanism 15 are full of water. At this time, the sixth valve 1402 is closed, and the exhaust work of the pump body is completed. The staff does not need to rotate and adjust it many times, and the water discharged with the gas in the pump shell 7 can flow into the cooling mechanism 15 as coolant, thereby improving the cooling effect on the pump body, and the functionality is strong.

[0029] like Figure 1-Figure 9As shown, a cooling mechanism 15 is installed on the outer wall of the pump shaft 8, and the cooling mechanism 15 includes a cooling tube 1501 arranged on the outer wall of the pump shaft 8, both ends of the cooling tube 1501 are fixedly connected with threaded pipe heads 1502, one of the threaded pipe heads 1502 is threadedly connected with a fixing ring 1503, a circulating screw 1504 is provided in the center of the cooling tube 1501, one end of the outer wall of the cooling tube 1501 is fixedly connected with a water inlet pipe 1505, and the other end of the outer wall of the cooling tube 1501 is fixedly connected with an outlet pipe 1506. The outer wall of the cooling pipe 1501 is provided with a spiral tube 1507. The water in the discharge pipe 1401 is transported to the cooling pipe 1501 through the water inlet pipe 1505. When the pump shaft 8 rotates, the circulation screw 1504 is driven to rotate, and the water in the cooling pipe 1501 is transported to the water outlet pipe 1506, and then transported to the spiral tube 1507. When the circulation screw 1504 continues to rotate, the water in the spiral tube 1507 flows into the discharge pipe 1401 through the other end. 03 outlet is higher than the highest water level of the spiral tube 1507, the water in the exhaust pipe 1403 will not overflow, the water in the cooling tube 1501 cools the pump shaft 8, and at the same time, under the action of the heat dissipation mechanism 16, the spiral tube 1507 dissipates heat from the water in the cooling tube 1501 to improve the heat dissipation effect on the pump shaft 8, one end of the drain pipe 1401 is fixedly connected to the water inlet pipe 1505, one end of the spiral tube 1507 is fixedly connected to the water outlet pipe 1506, and the other end of the spiral tube 1507 is fixedly connected to the drain pipe The outer wall of 1401 is fixedly connected at a position close to one side of the exhaust pipe 1403, the discharge pipe 1401 is transported to the cooling pipe 1501 through the water inlet pipe 1505, the cooling pipe 1501 is transported to the spiral tube 1507 through the water outlet pipe 1506, and the other threaded pipe head 1502 is threadedly connected to the connecting ring 131, so as to improve the fixation of the cooling pipe 1501, and when disassembling the cooling pipe 1501, it is only necessary to rotate the connecting ring 131, and then rotate the cooling pipe 1501 again to achieve disassembly.

[0030] The working principle of this embodiment is as follows. When the pump casing 7 is exhausted, the fourth valve 73 is closed, the sixth valve 1402 is opened, and the motor 18 is started to drive the coupling 17 to rotate, thereby driving the pump shaft 8 to rotate, thereby driving the impeller 9 and the connecting shaft 11 to rotate, and thereby driving the feeding screw 12 to rotate. When the feeding screw 12 rotates, the water storage tank 2 is evacuated, and the water in the water storage tank 2 is extracted through the second connecting pipe 5. When the water in the pump casing 7 is pumped to a certain amount, the first valve 22 is closed, and the second valve 4 is opened. At this time, the water in the water storage tank 2 is transported to the first connecting pipe 3, squeezing the gas in the water pipe connected thereto, so that the impeller 9 quickly pumps water. When water is pumped into the pump casing 7, the water displaces the air in the pump casing 7, so that the gas in the pump casing 7 is transported to the cooling mechanism 15 through the drain pipe 1401. When the gas in the cooling mechanism 15 is full, the gas is transported to the exhaust pipe 1403. Under the action of pressure, the movable cap 1405 is pushed. Under the action of spring 1407, movable cap 1405 moves upward, so that gas is transported to the outside through fixing frame 1408, and exhaust is completed. When impeller 9 rotates continuously, water in pump housing 7 is transported to cooling pipe 1501 through drain pipe 1401. When pump shaft 8 rotates, circulation screw 1504 is driven to rotate, and water in cooling pipe 1501 is transported to outlet pipe 1506, and then transported to spiral tube 1507. When circulation screw 1504 rotates continuously, water in spiral tube 1507 flows to drain pipe 1401 through the other end. Since the outlet of exhaust pipe 1403 is higher than the highest water level of spiral tube 1507, water in exhaust pipe 1403 will not overflow, and water in cooling pipe 1501 cools pump shaft 8. When water floats when staff penetrates exhaust pipe 1403, it indicates that drain pipe 1401 and cooling mechanism 15 are full of water. At this time, sixth valve 1402 is closed to complete exhaust work. When the gas in the pump housing 7 is completely discharged, the impeller 9 continues to pump water steadily, and the water level in the water tank 2 remains unchanged. At the same time, the pump shaft 8 rotates to drive the driving gear 1602 to rotate, so that the driving gear 1602 rotates to drive the multiple movable gears 1606 to rotate. At the same time, the multiple movable gears 1606 rotate under the meshing of the fixed gear ring 1601, so that the multiple movable gears 1606 rotate and revolve, and the fan blades 1607 rotate and revolve, so as to achieve heat dissipation of the discharge pipe 1401, the cooling pipe 1501 and the spiral pipe 1507; After the pumping work is completed, close the second valve 4 and the third valve 51. At this time, the water in the water tank 2 can continue to provide water to the pump housing 7 for the next work. When the water level in the water tank 2 touches the water level alarm 23, the water level alarm 23 sounds an alarm. At this time, the water in the water tank 2 cannot be provided to the pump housing 7, prompting the staff to add water to the water tank 2. The staff can add water to the water tank 2 through the air inlet pipe 21 without starting the pump body to add water every time.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A self-priming pump, comprising a base (1), characterized in that: A water storage tank (2) is fixedly mounted on one side of the top of the base (1), a first connecting pipe (3) is fixedly connected to one side of the water storage tank (2), and a second valve (4) is fixedly mounted on the outer wall of the first connecting pipe (3); A second connecting pipe (5) is fixedly connected to the other side of the water storage tank (2), a third valve (51) is fixedly installed on the outer wall of the second connecting pipe (5), a housing (6) is fixedly connected to the top center of the base (1), and a pump housing (7) is fixedly connected to one side of the housing (6); The center of the housing (6) is rotatably connected to a pump shaft (8); an impeller (9) is fixedly mounted on one end of an outer wall of the pump shaft (8); a fixing head (10) is provided at one end of the impeller (9); one end of the pump shaft (8) is fixedly connected to a connecting shaft (11); a feeding screw (12) is fixedly mounted on the outer wall of the connecting shaft (11); a sealing seat (13) is mounted at the center of the pump shaft (8); and one end of the sealing seat (13) is fixedly connected to a connecting ring (131); An exhaust assembly (14) is mounted on the other side of the pump housing (7), a cooling mechanism (15) is mounted on the outer wall of the pump shaft (8), a heat dissipation mechanism (16) is mounted on the inner wall of the other side of the pump housing (7), a coupling (17) is fixedly connected to the other end of the pump shaft (8), a motor (18) is fixedly mounted on the other side of the top of the base (1), and the other end of the coupling (17) is fixedly connected to the output shaft of the motor (18).

2. A self-priming pump according to claim 1, characterized in that: An air intake pipe (21) is fixedly connected to the top of the water storage tank (2), a first valve (22) is fixedly mounted on the outer wall of the air intake pipe (21), and a water level alarm (23) is mounted on the inner bottom end of the water storage tank (2).

3. A self-priming pump according to claim 1, characterized in that: A third connecting pipe (71) is fixedly connected to one side of the pump housing (7), a fourth connecting pipe (72) is fixedly connected to the top of the pump housing (7), a fourth valve (73) is fixedly mounted on the outer wall of the fourth connecting pipe (72), a liquid outlet pipe (74) is fixedly connected to the bottom of the pump housing (7), and a fifth valve (75) is fixedly mounted on the outer wall of the liquid outlet pipe (74).

4. A self-priming pump according to claim 3, characterized in that: One end of the third connecting tube (71) is fixedly connected to the second connecting tube (5), and the connecting shaft (11) and the feeding screw (12) are both located in the third connecting tube (71).

5. A self-priming pump according to claim 1, characterized in that: The heat dissipation mechanism (16) comprises a fixed gear ring (1601) fixedly connected to the inner wall of the other side of the pump housing (7); the outer wall of the pump shaft (8) is fixedly connected to a driving gear (1602); the outer wall of the pump shaft (8) is fixedly mounted with a bearing (1603) near the fixed gear ring (1601); the outer wall of the bearing (1603) is fixedly connected to a movable frame (1604); a plurality of gear shafts (1605) are rotatably connected to the movable frame (1604); the centers of the outer walls of the plurality of gear shafts (1605) are fixedly connected to movable gears (1606); one ends of the outer walls of the plurality of gear shafts (1605) are fixedly connected to fan blades (1607); and the plurality of movable gears (1606) are respectively meshed with the fixed gear ring (1601) and the driving gear (1602).

6. An exhaust mechanism applied to the self-priming pump according to any one of claims 1 to 5, comprising an exhaust component (14) and a cooling mechanism (15), characterized in that: The exhaust assembly (14) comprises a drain pipe (1401) fixedly connected to the other side of the pump housing (7); a sixth valve (1402) is fixedly connected to one end of the outer wall of the drain pipe (1401); an exhaust pipe (1403) is fixedly connected to the other end of the outer wall of the drain pipe (1401); a breathable plate (1404) is fixedly connected to the bottom end of the inner wall of the exhaust pipe (1403); a movable cap (1405) is provided at the center of the breathable plate (1404); a movable rod (1406) is fixedly connected to the center of the top of the movable cap (1405); a spring (1407) is fixedly connected to the top of the movable cap (1405) and located on the outside of the movable rod (1406); a fixing frame (1408) is fixedly connected to the top end of the inner wall of the exhaust pipe (1403); and the movable rod (1406) passes through the center of the fixing frame (1408).

7. The exhaust mechanism of a self-priming pump according to claim 6, characterized in that: The cooling mechanism (15) comprises a cooling tube (1501) arranged on the outer wall of the pump shaft (8); both ends of the cooling tube (1501) are fixedly connected with threaded tube heads (1502); a fixing ring (1503) is threadedly connected to one of the threaded tube heads (1502); a circulating screw (1504) is provided at the center of the cooling tube (1501); one end of the outer wall of the cooling tube (1501) is fixedly connected with a water inlet pipe (1505); the other end of the outer wall of the cooling tube (1501) is fixedly connected with a water outlet pipe (1506); and the outer wall of the cooling tube (1501) is provided with a spiral tube (1507).

8. The exhaust mechanism of a self-priming pump according to claim 7, characterized in that: One end of the liquid discharge pipe (1401) is fixedly connected to the water inlet pipe (1505), one end of the spiral tube (1507) is fixedly connected to the water outlet pipe (1506), and the other end of the spiral tube (1507) is fixedly connected to a position on the outer wall of the liquid discharge pipe (1401) close to the exhaust pipe (1403).

9. The exhaust mechanism of a self-priming pump according to claim 7, characterized in that: The other threaded pipe head (1502) is threadedly connected to the connecting ring (131).

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