A self-priming impeller pump

Abstract

The present invention discloses a self-priming impeller pump, comprising an impeller pump body, a water inlet, a water outlet, and a motor body, an impeller assembly and a driving assembly interconnected by a rotating shaft are arranged in the motor body, a diaphragm pump body is sealed at the end of the impeller pump body, the diaphragm pump body comprises a mounting seat, a collecting and expanding assembly is slidably sleeved in the mounting seat body, the collecting and expanding assembly and the inner wall of the mounting seat form a first water outlet cavity, a water path connected between the first water outlet cavity and the water outlet conduit is provided with a throttling hole formed by the mounting seat body, the first water outlet cavity is connected to the water inlet conduit through a one-way water flow structure, the water inlet conduit is connected to the pump water cavity of the impeller pump body, the water outlet conduit is connected to the water outlet, a suspension assembly is connected between the rotating shaft and the collecting and expanding assembly, and the suspension assembly controls the collecting and expanding assembly to stop or move under the action of the water pressure in the first water outlet cavity. The present invention can quickly discharge the air in the pump, so that the liquid can be sucked into the pump in time, thereby improving the working efficiency of the impeller pump.

Description

Technical Field

[0001] The invention relates to the technical field of fluid transportation, and in particular to a self-priming impeller pump. Background Art

[0002] A pump is a machine used to transport fluid or pressurize fluid. An impeller pump is a type of pump. When working, the impeller drives the liquid to rotate at high speed, transfers mechanical energy to the liquid, and uses the centrifugal motion of the liquid when it rotates to achieve the purpose of transporting the liquid. The existing impeller pump drives the impeller to rotate through a motor, so that a vacuum is generated in the pump water chamber, and then the liquid enters the pump water chamber from the liquid inlet and flows out through the liquid outlet driven by the impeller. However, when the water inlet of the existing impeller pump is higher than the liquid level, the impeller of the impeller pump rotates, making it difficult for the internal air to be discharged, so that the external liquid is not easy to be sucked in. Water is often injected into the impeller pump first, and the internal air is manually discharged. This is time-consuming and labor-intensive, resulting in low working efficiency of the impeller pump, which is not conducive to on-site work. Summary of the invention

[0003] The object of the present invention is to provide a self-priming impeller pump, which is used to quickly discharge the air in the pump so that the liquid can be sucked into the pump in time, thereby improving the working efficiency of the impeller pump.

[0004] In order to solve the above technical problems, the present invention adopts the following solutions:

[0005] A self-priming impeller pump comprises an impeller pump body, which is provided with a water inlet, a water outlet and a motor body. The motor body is provided with an impeller assembly and a drive assembly interconnected by a rotating shaft. A diaphragm pump body is sealed at the end of the impeller pump body. The diaphragm pump body comprises a mounting seat. A contraction and expansion assembly is slidably sleeved in the mounting seat body. The contraction and expansion assembly and the inner wall of the mounting seat form a first water outlet chamber. A throttling hole formed by the mounting seat body is provided on the water path connecting the first water outlet chamber and the water outlet conduit. The first water outlet chamber is connected to the water inlet conduit through a unidirectional water flow structure. The water inlet conduit is connected to the pump water chamber of the impeller pump body. The water outlet conduit is connected to the water outlet. A suspension assembly is connected between the rotating shaft and the contraction and expansion assembly. The suspension assembly controls the contraction and expansion assembly to stop or move under the action of the water pressure in the first water outlet chamber.

[0006] Compared with the prior art, the current impeller pump has a poor effect of exhausting the internal air when the water inlet is higher than the liquid level, and it is often necessary to first inject water into the interior to exhaust the internal air, so that the rotation of the impeller can suck in the external water; in this solution, a diaphragm pump body is sealed and installed at the end of the impeller pump body. In the initial stage of the operation of the impeller pump, the rotating shaft in the motor body rotates at a low speed, and the rotating shaft drives the suspension component and the impeller component to rotate at the same time. Under the drive of the suspension component, the expansion component produces an expansion and contraction state, first exhausting the internal air. After the internal air is exhausted, the first water outlet chamber produces a vacuum state, and the external water is sucked in from the water pump chamber of the impeller pump body through the water inlet conduit, and then squeezed into the first water outlet chamber after passing through the unidirectional water flow structure. Due to the effect of the throttling hole, the amount of water flowing out of the first water outlet chamber is very small, so A large amount of water accumulates in the first water outlet chamber to produce a back-pressure state, which increases the water pressure in the first water outlet chamber, thereby changing the suspension state of the suspension component, causing the suspension component to stop driving the expansion component, and the expansion component begins to stop squeezing the internal source water. Since the air in the impeller pump body is discharged, the rotation of the impeller component can directly drive the water in the pump water chamber to the water outlet, and the throttling effect of the throttling hole allows the water pressure in the first water outlet chamber to remain relatively stable. In this way, the expansion component will not open and close within the stable water pressure range of the first water outlet chamber, thereby extending the service life of the expansion component and exhausting the internal air at the same time, so that even if the impeller pump is above the liquid surface, it can still suck in and pump out water better, without the need to manually inject water and exhaust air into the interior, saving time and effort, and greatly improving the operating efficiency of the impeller pump body.

[0007] Preferably, the suspension component includes a base magnetic ring, a suspension magnetic ring, a driving sleeve, a reset spring and an eccentric seat, the rotating shaft is fixedly connected to the driving sleeve, the base magnetic ring is embedded in the driving sleeve, the suspension magnetic ring is fixedly sleeved on the outer wall of the eccentric seat and is located inside the driving sleeve, one end of the eccentric seat passes through the base magnetic ring and extends to the outside of the base magnetic ring, and is connected to the expansion component, the other end of the eccentric seat is slidably sleeved on the rotating shaft, one end of the reset spring acts on the eccentric seat, and the other end acts on the bottom inner wall of the driving sleeve, the base magnetic ring and the suspension magnetic ring move away from or close to each other to control the expansion component to stop or move. In this solution, the rotating shaft drives the driving sleeve to rotate, and the driving sleeve drives the basic magnetic ring to rotate accordingly. In the initial stage of the operation of the impeller pump body, the distance between the basic magnetic ring and the suspension magnetic ring is very small. At this time, under the action of the magnetic field, the rotation of the basic magnetic ring can drive the suspension magnetic ring to rotate accordingly. Since the suspension magnetic ring is fixed on the eccentric seat, the rotation of the suspension magnetic ring causes the eccentric seat to rotate. In this way, the eccentric seat drives the expansion and contraction assembly to open and close, discharge the internal air, and generate a vacuum state in the first water outlet chamber, and inhale the external water from the pump water chamber of the impeller pump body through the water inlet conduit, and then squeeze it into the first water outlet chamber after passing through the unidirectional water flow structure. Due to the effect of the throttling hole, the amount of water outflow from the first water outlet chamber is reduced. Very rarely, such a large amount of water accumulates in the first water outlet chamber to produce a back-pressure state, which increases the water pressure in the first water outlet chamber until the water pressure increases to a level that can overcome the elastic force of the suspension spring. The water pressure in the first water outlet chamber drives the expansion component to push toward the water inlet, causing relative displacement between the eccentric seat and the rotating shaft, thereby increasing the distance between the basic magnetic ring and the suspension magnetic ring, until there is no magnetic field reaction between the two magnetic rings. The rotation of the basic magnetic ring cannot drive the suspension magnetic ring to continue to rotate, and the eccentric seat no longer drives the expansion component to move. Since the air in the impeller pump body has been completely expelled and water is sucked into the cavity in the impeller pump body, the impeller assembly can efficiently pump out water.

[0008] Preferably, the expansion and contraction assembly includes a suspended pressure-sensitive plate, a boosting diaphragm, a support plate, a suspended spring and a fixed sleeve. The suspended pressure-sensitive plate is circumferentially sealed and slidably connected to the inner wall of the sleeve formed by the mounting seat body. One end of the suspended pressure-sensitive plate is connected to the support plate and forms a first water outlet cavity between the inner wall of the mounting seat. The support plate is circumferentially sealed and slidably connected to the inner wall of the mounting seat. The boosting diaphragm is circumferentially sealed and pressed between the support plate and the fixed sleeve. One end of the suspended spring acts on the impeller pump body, and the other end acts on the support plate. A boosting cavity is formed between the boosting diaphragm and the support plate. The boosting diaphragm is connected to a push rack, and the push rack is connected to the eccentric seat through an eccentric rod. In this solution, when the impeller pump body is in motion, the rotation of the eccentric seat drives the eccentric rod to rotate eccentrically, and the rotation of the eccentric rod drives the push rack to follow the movement. The push rack pushes the pressurization diaphragm to open and close, and after the air in the impeller pump body is exhausted, a part of the water is sucked into the first water outlet chamber. In this way, a large amount of water accumulates in the first water outlet chamber to produce a pressure-blocking state, which increases the water pressure in the first water outlet chamber. When the water pressure increases to a level that can overcome the elastic force of the suspension spring, the water pressure in the first water outlet chamber drives the suspension pressure-sensitive plate to slide in the sleeve toward the water inlet, and the suspension pressure-sensitive plate Then push the support plate to slide along the inner wall of the mounting seat toward the water inlet and compress the suspension spring. Under the action of the eccentric rod, the eccentric seat and the rotating shaft are relatively displaced, so that the distance between the basic magnetic ring and the suspension magnetic ring increases. When there is no magnetic field reaction between the two magnetic rings, the rotation of the basic magnetic ring can no longer drive the suspension magnetic ring to continue to rotate, and the eccentric seat no longer drives the expansion and contraction assembly to move. Since the air in the impeller pump body has been completely expelled and water is sucked into the cavity in the impeller pump body, the impeller assembly can efficiently pump out the water.

[0009] Preferably, the first water outlet chamber is connected to the boost chamber via a water outlet one-way valve flap, which is fixed on the bottom end face of the suspended pressure-sensitive plate, and the boost chamber is connected to the water inlet conduit via a water inlet one-way valve flap, which is fixed on the end face of the support plate and is located in the circumference of the water outlet one-way valve flap. The water inlet one-way valve flap only allows water to enter the boost chamber from the water inlet pipe to avoid backflow from the boost chamber; the water outlet one-way valve flap only allows the boost diaphragm to pump the water in the boost chamber to the first water outlet chamber to avoid backflow of the water in the first water outlet chamber and affect the water pressure in the first water outlet chamber.

[0010] Preferably, the suspended pressure-sensitive plate is provided with a first sealing ring in the circumferential direction, and the support plate is provided with a second sealing ring in the circumferential direction. The first sealing ring can prevent water in the water inlet pipe from entering the first water outlet cavity through the gap in the circumferential direction of the suspended pressure-sensitive plate, and the second sealing ring can prevent water from entering the motor body, thereby affecting the normal operation of the internal drive components.

[0011] Preferably, it also includes a pressure-maintaining component, which is installed on the water outlet conduit. The pressure-maintaining component includes a valve seat with an inner cavity, a control rod, a pressure-maintaining and pressure-sensing plate, and a pressure-maintaining spring. The valve seat is connected to the outer wall of the water outlet conduit, and a second water outlet cavity is provided in the valve seat. The pressure-maintaining and pressure-sensing plate is located in the valve seat and is sealingly and slidably connected to the inner wall of the valve seat. A valve cover is provided on the top of the valve seat, an atmospheric cavity is formed between the valve cover and the pressure-maintaining and pressure-sensing plate, and an atmospheric hole is provided on the valve cover. One end of the pressure-maintaining spring acts on the valve cover, and the other end acts on the pressure-maintaining and pressure-sensing plate. A water groove is provided at the lower end of the control rod, and the second water outlet cavity is connected to the pump water cavity through the water outlet channel. One end of the control rod is connected to the pressure-maintaining and pressure-sensing plate, and the other end extends into the water outlet conduit and is used for sealing or connecting the water channel at the water sealing collar. In this scheme, the water pumped out by the water pump chamber enters the second water outlet chamber, and the water pressure of the second water outlet chamber acts on the pressure-maintaining pressure-sensitive plate. When the water pressure in the second water outlet chamber is sufficient to overcome the air pressure in the atmospheric chamber and the elastic force of the pressure-maintaining spring, the control rod moves upward until the water channel is connected to the second water outlet chamber, and the water in the second water outlet chamber is pumped out from the water outlet. The pressure-maintaining component can effectively ensure that the water pressure value in the second water outlet chamber is within the allowable range, and the water pressure value in the second water outlet chamber is the same as the water pressure value in the first water outlet chamber. Since the water path between the two is conductive, the water pressure value in the first water outlet chamber can be ensured to be within a stable range, so that the basic magnetic ring and the suspended magnetic ring can be within a controlled distance range, so that the expansion component will not act, effectively ensuring the service life of the boosting diaphragm.

[0012] Preferably, the pressure-retaining pressure-sensing plate is circumferentially sleeved with a third sealing ring, and the control rod is circumferentially sleeved with a fourth sealing ring. The third sealing ring prevents the water in the second water outlet chamber from entering the atmospheric chamber, and the fourth sealing ring can prevent the water pressure in the second water inlet chamber from entering the water outlet conduit in advance before overcoming the elastic force of the pressure-retaining spring and the pressure in the atmospheric chamber, thereby improving the sealing effect at the water sealing collar, which can effectively ensure that the water pressure in the second water outlet chamber is the same as the water pressure in the first water outlet chamber, so that the suspension component can maintain a suspended state, and the expansion component will not move, which is conducive to extending the service life of the booster diaphragm in the expansion component.

[0013] Preferably, the impeller assembly includes an impeller arranged around the circumference of the rotating shaft, and the impeller is arranged in a spiral shape.

[0014] Preferably, the impeller is provided with an impeller sleeve in the circumference thereof, and the impeller sleeve is provided with auxiliary nozzles and main nozzles which are connected to the second water outlet chamber at the same time. Providing two nozzles can improve the water pumping efficiency of the impeller pump.

[0015] The present invention has the beneficial effects:

[0016] 1. The present invention has a diaphragm pump body sealed at the end of the impeller pump body. In the initial stage of the operation of the impeller pump, the shaft in the motor body rotates at a low speed, and the shaft drives the suspension component and the impeller component to rotate simultaneously. The expansion component, driven by the suspension component, generates an expansion and contraction state, and the internal air is first discharged. After the internal air is discharged, the first water outlet chamber generates a vacuum state, and the external water is sucked from the pump water chamber of the impeller pump body through the water inlet conduit, and then squeezed into the first water outlet chamber after passing through the one-way water flow structure. Due to the effect of the throttling hole, the amount of water flowing out of the first water outlet chamber is very small, so a large amount of water accumulates in the first water outlet chamber to generate a pressure-blocking state, which increases the water pressure in the first water outlet chamber, causing the basic magnetic The distance between the ring and the suspension magnetic ring is enlarged, so that the suspension component stops driving the expansion component, and the expansion component begins to stop squeezing the internal source water. As the air in the impeller pump body is discharged, the rotation of the impeller component can directly pump the water in the pump water chamber to the water outlet. The throttling effect of the throttling hole allows the water pressure in the first water outlet chamber to remain relatively stable. In this way, the expansion component will not open and close within the stable water pressure range in the first water outlet chamber, thereby extending the service life of the expansion component and exhausting the internal air at the same time. Therefore, even if the impeller pump is above the liquid surface, it can still suck in and pump out water better, without the need to manually inject water and exhaust air into the interior, which saves time and effort and greatly improves the operating efficiency of the impeller pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the left view structure;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of AA;

[0020] Figure 4 It is a structural diagram of the receiving and expanding component;

[0021] Figure 5 for Figure 1 Plan structure diagram;

[0022] Figure 6 for Figure 5 Schematic diagram of the structure of BB.

[0023] Figure numerals: 01-water outlet, 02-valve seat, 03-water outlet pipe, 04-diaphragm pump body, 05-motor body, 06-impeller pump body, 07-water inlet, 08-water inlet conduit, 09-impeller assembly, 10-driving assembly, 11-driving sleeve, 12-rotating shaft, 13-reset spring, 14-suspended magnetic ring, 15-base magnetic ring, 16-eccentric seat, 17-retracting and expanding assembly, 18-sleeve, 19-first sealing ring, 20-suspended pressure-sensitive plate, 21-first water outlet cavity, 22-mounting seat, 23-throttle hole, 24-suspended spring, 25-water sealing ring, 26-pressure-maintaining spring, 27- Large air hole, 28-valve cover, 29-large air cavity, 30-pressure-maintaining pressure-sensing plate, 31-fourth sealing ring, 32-third sealing ring, 33-fixing sleeve, 34-impeller sleeve, 35-auxiliary nozzle, 36-annular flow channel, 37-impeller, 38-main nozzle, 39-water outlet flow channel, 40-second water outlet cavity, 41-control rod, 42-water inlet check valve disc, 43-water outlet check valve disc, 44-push rack, 45-boosting cavity, 46-second sealing ring, 47-eccentric rod, 48-fifth sealing ring, 49-water outlet conduit, 50-water inlet pipe, 51-boosting diaphragm, 52-support plate, 53-water trough. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "opened", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example 1

[0028] like Figure 1-6As shown, a self-priming impeller pump 37 includes an impeller pump body 06, on which a water inlet 07, a water outlet 01, and a motor body 05 are provided. An impeller assembly 09 and a drive assembly 10 connected to each other by a rotating shaft 12 are provided in the motor body 05. The drive assembly 10 drives the impeller assembly 09 to rotate through the rotating shaft 12 to pump out the water in the pump water cavity. The end of the impeller pump body 06 is sealed with a diaphragm pump body 04. The diaphragm pump body 04 includes a mounting seat 22. The mounting seat 22 is a cylindrical structure with an inner cavity. The mounting seat 22 body is slidably sleeved with a receiving and expanding assembly 17. The receiving and expanding assembly 17 and the mounting seat 22 can slide relative to each other. A water inlet pipe is provided in the wall of the mounting seat 22. The water inlet pipe 50 is sealed and sleeved in the water inlet conduit 08, and the water outlet pipe 03 is sealed and sleeved in the water outlet conduit 49. The expansion component 17 and the inner wall of the mounting seat 22 form a first water outlet chamber 21. A throttling hole 23 formed by the mounting seat 22 body is provided on the water path connecting the first water outlet chamber 21 and the water outlet conduit 49. The first water outlet chamber 21 is connected to the water inlet conduit 08 through a one-way water flow structure. The water inlet conduit 08 is connected to the pump water chamber of the impeller pump body 06, and the water outlet conduit 49 is connected to the water outlet 01. A suspension component is connected between the rotating shaft 12 and the expansion component 17. The suspension component controls the expansion component 17 to stop or move under the action of the water pressure in the first water outlet chamber 21.

[0029] In this embodiment, a diaphragm pump body 04 is sealed and installed at the end of the impeller pump body 06. In the initial stage of the operation of the impeller pump, the rotating shaft 12 in the motor body 05 rotates at a low speed, and the rotating shaft 12 drives the suspension component and the impeller component 09 to rotate simultaneously. The expansion component 17, driven by the suspension component, produces an expansion and contraction state, first exhausts the internal air, and after the internal air is exhausted, the first water outlet chamber 21 produces a vacuum state, and the external water is sucked in from the pump water chamber of the impeller pump body 06 through the water inlet conduit 08, and then squeezed into the first water outlet chamber 21 after passing through the unidirectional water flow structure. Due to the effect of the throttling hole 23, the amount of water flowing out of the first water outlet chamber 21 is very small, so a large amount of water accumulates in the first water outlet chamber 21 to produce a pressure-blocking state, which increases the water pressure in the first water outlet chamber 21. The air in the impeller pump body 06 is discharged, and the rotation of the impeller assembly 09 can directly pump the water in the pump water chamber to the water outlet 01. The throttling effect of the throttling hole 23 can keep the water pressure in the first water outlet chamber 21 relatively stable. In this way, the expansion assembly 17 will not open and close within the stable water pressure range in the first water outlet chamber 21, thereby extending the service life of the expansion assembly 17 and exhausting the internal air. Even if the impeller pump is above the liquid surface, it can still suck in and pump out the water well. There is no need to manually inject water and exhaust the air inside, which saves time and effort and greatly improves the operating efficiency of the impeller pump body 06.

[0030] Example 2

[0031] like Figure 1-6 As shown, specifically, the suspension component includes a base magnetic ring 15, a suspension magnetic ring 14, a driving sleeve 11, a reset spring 13 and an eccentric seat 16. The rotating shaft 12 is fixedly connected to the driving sleeve 11, the base magnetic ring 15 is embedded in the driving sleeve 11, the suspension magnetic ring 14 fixing sleeve 33 is connected to the outer wall of the eccentric seat 16 and is located in the driving sleeve 11, one end of the eccentric seat 16 passes through the base magnetic ring 15 and extends to the outside of the base magnetic ring 15, and is connected to the expansion component 17, the other end of the eccentric seat 16 is slidably sleeved with the rotating shaft 12, one end of the reset spring 13 acts on the eccentric seat 16, and the other end acts on the bottom inner wall of the driving sleeve 11, the base magnetic ring 15 and the suspension magnetic ring 14 move away from or close to each other to control the expansion component 17 to stop or move. In this scheme, the rotating shaft 12 drives the driving sleeve 11 to rotate, and the driving sleeve 11 drives the basic magnetic ring 15 to rotate accordingly. In the initial stage of the operation of the impeller pump body 06, the distance between the basic magnetic ring 15 and the suspension magnetic ring 14 is very small. At this time, under the action of the magnetic field, the rotation of the basic magnetic ring 15 can drive the suspension magnetic ring 14 to rotate accordingly. Since the suspension magnetic ring 14 is fixed on the eccentric seat 16, the rotation of the suspension magnetic ring 14 causes the eccentric seat 16 to rotate. In this way, the eccentric seat 16 drives the expansion component 17 to open and close, discharges the internal air, creates a vacuum state in the first water outlet chamber 21, and draws the external water from the pump water chamber of the impeller pump body 06 through the water inlet conduit 08, and then is squeezed into the first water outlet chamber 21 after passing through the unidirectional water flow structure. Due to the action of the throttling hole 23, the water in the first water outlet chamber 21 is The outflow volume is very small, so a large amount of water accumulates in the first water outlet chamber 21 to produce a pressure-blocking state, which increases the water pressure in the first water outlet chamber 21. Until the water pressure increases to a level that can overcome the elastic force of the suspension spring 24, the water pressure in the first water outlet chamber 21 drives the expansion component 17 to push toward the water inlet 07, causing a relative displacement between the eccentric seat 16 and the rotating shaft 12, thereby increasing the distance between the basic magnetic ring 15 and the suspension magnetic ring 14, until there is no magnetic field reaction between the two magnetic rings, the rotation of the basic magnetic ring 15 cannot drive the suspension magnetic ring 14 to continue to rotate, and the eccentric seat 16 no longer drives the expansion component 17 to move. Since the air in the impeller pump body 06 has been completely removed and the water is sucked into the cavity in the impeller pump body 06, the impeller assembly 09 can efficiently pump out the water.

[0032] Specifically, the expansion and contraction assembly 17 includes a suspended pressure-sensitive plate 20, a pressure-boosting diaphragm 51, a support plate 52, a suspended spring 24 and a fixed sleeve 33. A sleeve 18 is integrally formed on the inner wall of the mounting seat 22. The suspended pressure-sensitive plate 20 is circumferentially provided with a circle of grooves, and a first sealing ring 19 is sleeved in the groove. The suspended pressure-sensitive plate 20 is slidably sleeved in the sleeve 18, and the support plate 52 is circumferentially provided with a second sealing ring 46. The first sealing ring 19 can prevent water in the water inlet pipe 50 from entering the first water outlet chamber 21 through the circumferential gap of the suspended pressure-sensitive plate 20, and the second sealing ring 46 can prevent water from entering the motor body 05, thereby affecting the normal operation of the internal driving component 10; one end of the suspended pressure-sensitive plate 20 is integrally connected with the support plate 52 and forms the first water outlet chamber 21 with the inner wall of the mounting seat 22, the support plate 52 is circumferentially slidingly connected with the inner wall of the mounting seat 22, the boosting diaphragm 51 is circumferentially sealed and pressed between the support plate 52 and the fixed sleeve 33, one end of the suspension spring 24 acts on the impeller pump body 06, and the other end acts on the support plate 52, a boosting chamber 45 is formed between the boosting diaphragm 51 and the support plate 52, the boosting diaphragm 51 is connected to a push frame 44, and the push frame 44 is connected to the eccentric seat 16 through an eccentric rod 47.

[0033] In the present embodiment, when the impeller pump body 06 is in motion, the rotation of the eccentric seat 16 drives the eccentric rod 47 to rotate eccentrically, and the rotation of the eccentric rod 47 drives the push frame 44 to follow the movement, and the push frame 44 drives the pressurization diaphragm 51 to open and close, and after the air in the impeller pump body 06 is exhausted, a part of the water is sucked into the first water outlet chamber 21, so that a large amount of water accumulates in the first water outlet chamber 21 to produce a pressure-blocking state, so that the water pressure in the first water outlet chamber 21 increases. When the water pressure increases to a level that can overcome the elastic force of the suspension spring 24, the water pressure in the first water outlet chamber 21 drives the suspension pressure-sensitive plate 20 to slide in the sleeve 18 toward the water inlet 07, and the suspension pressure-sensitive plate 20 then The support plate 52 is pushed to slide along the inner wall of the mounting seat 22 toward the water inlet 07 and compress the suspension spring 24. Under the action of the eccentric rod 47, the eccentric seat 16 and the rotating seat are relatively displaced, so that the distance between the basic magnetic ring 15 and the suspension magnetic ring 14 increases to a certain range. When there is no magnetic field reaction between the two magnetic rings, the rotation of the basic magnetic ring 15 cannot drive the suspension magnetic ring 14 to continue to rotate, and the eccentric seat 16 no longer drives the expansion component 17 to move. Since the air in the impeller pump body 06 has been completely discharged and the water is sucked into the cavity in the impeller pump body 06, the impeller assembly 09 can efficiently pump out the water.

[0034] Example 3

[0035] like Figure 1-6As shown, specifically, the first water outlet chamber 21 is connected to the boost chamber 45 through a water outlet one-way valve flap 43, and the water outlet one-way valve flap 43 is fixed on the bottom end face of the suspended pressure-sensitive plate 20. The suspended pressure-sensitive plate 20 is provided with a water outlet hole connecting the boost chamber 45 and the first water outlet chamber 21, and the periphery of the water outlet one-way valve flap 43 covers the water outlet hole; the boost chamber 45 is connected to the water inlet duct 08 through a water inlet one-way valve flap 42, and the water inlet one-way valve flap 42 is fixed on the end face of the support plate 52 and is located in the circumference of the water outlet one-way valve flap 43, and the suspended pressure-sensitive plate 20 is provided with a water inlet hole connecting the boost chamber 45 and the water inlet pipe 50, and the periphery of the water inlet one-way valve flap 42 covers the water inlet hole. The water inlet one-way valve flap 42 only allows water to enter the boosting chamber 45 from the water inlet pipe 50, avoiding backflow from the boosting chamber 45; the water outlet one-way valve flap 43 only allows the boosting diaphragm 51 to pump the water in the boosting chamber 45 to the first water outlet chamber 21, avoiding backflow of water in the first water outlet chamber 21 and affecting the water pressure in the first water outlet chamber 21.

[0036] Example 4

[0037] like Figure 1-6 As shown, specifically, it also includes a pressure-maintaining component, which is installed on the water outlet conduit 49. The pressure-maintaining component includes a cylindrical valve seat 02 with an inner cavity, a control rod 41, a pressure-maintaining pressure-sensing plate 30, and a pressure-maintaining spring 26. The valve seat 02 is connected to the outer wall of the water outlet conduit 49, and a second water outlet cavity 40 is provided in the valve seat 02. The pressure-maintaining pressure-sensing plate 30 is located in the valve seat 02 and is sealed and slidably connected to the inner wall of the valve seat 02. A valve cover 28 is provided on the top of the valve seat 02. The valve cover 26 An atmospheric cavity 29 is formed between 8 and the pressure-maintaining and pressure-sensing plate 30, and an atmospheric hole 27 is provided on the valve cover 28. One end of the pressure-maintaining spring 26 acts on the valve cover 28, and the other end acts on the pressure-maintaining and pressure-sensing plate 30. A water groove 53 is provided at the lower end of the control rod 41. The second water outlet cavity 40 is connected with the pump water cavity through the water outlet channel 39. One end of the control rod 41 is connected to the pressure-maintaining and pressure-sensing plate 30, and the other end extends into the water outlet conduit 49 and is used to seal or connect the water channel at the water sealing ring 25. The water pumped out by the pump water chamber enters the second water outlet chamber 40, and the water pressure of the second water outlet chamber 40 acts on the pressure-maintaining pressure-sensitive plate 30. When the water pressure in the second water outlet chamber 40 is sufficient to overcome the air pressure in the atmospheric chamber 29 and the elastic force of the pressure-maintaining spring 26, the control rod 41 moves upward until the water groove 53 is connected to the second water outlet chamber 40, and the water in the second water outlet chamber 40 is pumped out from the water outlet 01. The pressure-maintaining component can effectively ensure that the water pressure value in the second water outlet chamber 40 is within the allowable range. The water pressure value of the second water outlet chamber 40 is the same as the water pressure value of the first water outlet chamber 21. Since the water path between the two is conductive, the water pressure value in the first water outlet chamber 21 can be ensured to be within a stable range, so that the basic magnetic ring 15 and the suspended magnetic ring 14 can be within a controlled distance range, so that the expansion component 17 will not act, effectively ensuring the service life of the boosting diaphragm 51.

[0038] Specifically, the pressure-retaining pressure-sensing plate 30 is circumferentially sleeved with a third sealing ring 32, and the control rod 41 is circumferentially sleeved with a fourth sealing ring 31. The third sealing ring 32 prevents the water in the second water outlet chamber 40 from entering the atmospheric chamber 29, and the fourth sealing ring 31 can prevent the water pressure in the second water inlet chamber from entering the water outlet conduit 49 in advance before overcoming the elastic force of the pressure-retaining spring 26 and the pressure in the atmospheric chamber 29, thereby improving the sealing effect at the water sealing collar 25, so that the water pressure in the second water outlet chamber 40 can be effectively ensured to be the same as the water pressure in the first water outlet chamber 21, so that the suspension component can maintain a suspended state, and the expansion component 17 will not move, which is conducive to extending the service life of the pressurization diaphragm 51 in the expansion component 17.

[0039] Example 5

[0040] like Figure 6 As shown, specifically, the impeller assembly 09 includes an impeller 37 arranged around the circumference of the rotating shaft 12, and the impeller 37 is arranged in a spiral shape; the impeller 37 is circumferentially provided with an impeller sleeve 34, and the impeller sleeve 34 is provided with auxiliary nozzles 35 and main nozzles 38 connected to the second water outlet chamber 40 at the same time, and the two nozzles are connected to the second water outlet chamber 40 through an annular flow channel 36 and a water outlet flow channel 39. The two nozzles are provided to improve the water pumping efficiency of the impeller 37 pump.

[0041] The working principle of the present invention is as follows: at the initial stage of the operation of the impeller pump body 06, the rotation speed is low, the rotation of the rotating shaft 12 drives the driving sleeve 11 to rotate, and the driving sleeve 11 drives the basic magnetic ring 15 to rotate, and the distance between the basic magnetic ring 15 and the suspension magnetic ring 14 is very small. At this time, under the action of the magnetic field, the rotation of the basic magnetic ring 15 can drive the suspension magnetic ring 14 to rotate. Since the suspension magnetic ring 14 is fixed on the eccentric seat 16, the rotation of the suspension magnetic ring 14 causes the eccentric seat 16 to rotate, and the rotation of the eccentric seat 16 drives the eccentric rod 47 to do eccentric rotation. The rotation of the eccentric rod 47 drives the push frame 44 to follow the movement, and the push frame 44 drives the boosting diaphragm 51 to squeeze and widen the boosting chamber 45, so that the boosting diaphragm 51 opens and closes to completely discharge the air inside the impeller pump body 06, so that a vacuum state is generated in the first water outlet chamber 21. When the boosting chamber 45 is widened, the external water is sucked into the boosting chamber 45 from the water pumping chamber of the impeller pump body 06 through the water inlet conduit 08, the water inlet pipe 50, and the water inlet one-way valve disc 42. When the boosting chamber 45 is squeezed, The water in the boost chamber 45 is then squeezed into the first water outlet chamber 21 through the one-way water outlet valve disc. Due to the action of the throttling hole 23, the amount of water flowing out of the first water outlet chamber 21 is very small. In this way, a large amount of water accumulates in the first water outlet chamber 21 to produce a pressure-blocking state, which increases the water pressure in the first water outlet chamber 21. Until the water pressure increases to a level that can overcome the elastic force of the suspension spring 24, the water pressure in the first water outlet chamber 21 acts on the suspension pressure-sensitive plate 20. The water pressure in the first water outlet chamber 21 drives the suspension pressure-sensitive plate 20 to slide in the sleeve 18 toward the water inlet 07. The suspension pressure-sensitive plate 20 then pushes the support plate 52 to slide along the inner wall of the mounting seat 22 toward the water inlet 07 and compresses the suspension spring 24. Under the action of the eccentric rod 47, the eccentric seat 16 and the rotating shaft 12 are driven to undergo a lateral relative displacement, so that the distance between the base magnetic ring 15 and the suspension magnetic ring 14 continues to increase. Until the distance increases to a certain range, there is no longer a magnetic field reaction between the two magnetic rings, so that the rotation of the basic magnetic ring 15 cannot drive the suspension magnetic ring 14 to continue to rotate, so that the eccentric seat 16 no longer rotates the eccentric rod 47, and the squeezing and widening actions of the boosting diaphragm 51 stop. At this time, the air in the impeller pump body 06 has been completely discharged, and the water is sucked into the cavity in the impeller pump body 06, so that the impeller assembly 09 can efficiently pump out the water; at the same time, the water pressure value of the second water outlet chamber 40 is the same as the water pressure value of the first water outlet chamber 21. Since the water path between the two is conductive, the water pressure value in the first water outlet chamber 21 can be guaranteed to be within a stable range, so that the basic magnetic ring 15 and the suspension magnetic ring 14 can be within a controlled distance range, so that the boosting diaphragm 51 will not move, effectively ensuring the service life of the boosting diaphragm 51.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A self-priming impeller pump, comprising an impeller pump body (06), the impeller pump body (06) being provided with a water inlet (07), a water outlet (01), and a motor body (05), the motor body (05) being provided with an impeller assembly (09) and a drive assembly (10) connected to each other via a rotating shaft (12); characterized in that: The end of the impeller pump body (06) is sealed with a diaphragm pump body (04), the diaphragm pump body (04) includes a mounting seat (22), a receiving and expanding component (17) is slidably sleeved in the mounting seat (22) body, the receiving and expanding component (17) and the inner wall of the mounting seat (22) form a first water outlet chamber (21), a throttling hole (23) formed by the mounting seat (22) body is provided on the water path connecting the first water outlet chamber (21) and the water outlet conduit (49), the first water outlet chamber (21) is connected to the water inlet conduit (08) through a one-way water flow structure, the water inlet conduit (08) is connected to the pump water chamber of the impeller pump body (06), the water outlet conduit (49) is connected to the water outlet (01), a suspension component is connected between the rotating shaft (12) and the receiving and expanding component (17), and the suspension component controls the receiving and expanding component (17) to stop or move under the action of the water pressure in the first water outlet chamber (21); The suspension assembly comprises a base magnetic ring (15), a suspension magnetic ring (14), a driving sleeve (11), a return spring (13) and an eccentric seat (16); the rotating shaft (12) is fixedly connected to the driving sleeve (11); the base magnetic ring (15) is embedded in the driving sleeve (11); the suspension magnetic ring (14) is fixedly sleeved on the outer wall of the eccentric seat (16) and is located inside the driving sleeve (11); one end of the eccentric seat (16) passes through the base magnetic ring (15) and extends to the outside of the base magnetic ring (15) and is connected to the expansion assembly (17); the other end of the eccentric seat (16) is slidably sleeved on the rotating shaft (12); one end of the return spring (13) acts on the eccentric seat (16) and the other end acts on the inner wall of the bottom of the driving sleeve (11); the base magnetic ring (15) and the suspension magnetic ring (14) move away from or close to each other to control the expansion assembly (17) to stop or move; The expansion and contraction assembly (17) comprises a suspended pressure-sensitive plate (20), a pressure-boosting diaphragm (51), a support plate (52), a suspension spring (24) and a fixing sleeve (33); the suspended pressure-sensitive plate (20) is circumferentially connected to the inner wall of a sleeve (18) formed by a main body of the mounting seat (22) in a sealing and sliding manner; one end of the suspended pressure-sensitive plate (20) is connected to the support plate (52) and a first water outlet cavity (21) is formed between the support plate (52) and the inner wall of the mounting seat (22); the support plate (52) is circumferentially connected to the mounting seat ( 22) The inner wall is sealed and slidably connected, the booster diaphragm (51) is circumferentially sealed and pressed between the support plate (52) and the fixed sleeve (33), one end of the suspension spring (24) acts on the impeller pump body (06), and the other end acts on the support plate (52), a booster chamber (45) is formed between the booster diaphragm (51) and the support plate (52), the booster diaphragm (51) is connected to a push frame (44), and the push frame (44) is connected to the eccentric seat (16) through an eccentric rod (47); The first water outlet chamber (21) and the pressure boosting chamber (45) are connected via a water outlet one-way valve flap (43), the water outlet one-way valve flap (43) is fixed on the bottom end surface of the suspended pressure-sensitive plate (20), and the pressure boosting chamber (45) is connected to the water inlet conduit (08) via a water inlet one-way valve flap (42), the water inlet one-way valve flap (42) is fixed on the end surface of the support plate (52) and is located in the circumferential direction of the water outlet one-way valve flap (43); The suspended pressure-sensitive plate (20) is circumferentially sleeved with a first sealing ring (19), and the support plate (52) is circumferentially sleeved with a second sealing ring (46).

2. A self-priming impeller pump according to claim 1, characterized in that: The pressure-maintaining assembly is also included, and the pressure-maintaining assembly is installed on the water outlet conduit (49). The pressure-maintaining assembly includes a valve seat (02) with an inner cavity, a control rod (41), a pressure-maintaining pressure-sensing plate (30), and a pressure-maintaining spring (26). The valve seat (02) is connected to the outer wall of the water outlet conduit (49), and a second water outlet cavity (40) is provided in the valve seat (02). The pressure-maintaining pressure-sensing plate (30) is located in the valve seat (02) and is sealingly and slidably connected to the inner wall of the valve seat (02). A valve cover (28) is provided at the top of the valve seat (02). The valve cover (28) and the pressure-maintaining pressure-sensing plate (30) are connected to the inner wall of the valve seat (02). An atmospheric cavity (29) is formed between the pressure plates (30) and an atmospheric hole (27) is provided on the valve cover (28). One end of the pressure-maintaining spring (26) acts on the valve cover (28) and the other end acts on the pressure-maintaining pressure-sensing plate (30). A water groove (53) is provided at the lower end of the control rod (41). The second water outlet cavity (40) is connected to the pump water cavity through the water outlet channel (39). One end of the control rod (41) is connected to the pressure-maintaining pressure-sensing plate (30) and the other end extends into the water outlet conduit (49) and is used to seal or connect the water channel at the water sealing ring (25).

3. A self-priming impeller pump according to claim 2, characterized in that: The pressure-retaining and pressure-sensing plate (30) is circumferentially sleeved with a third sealing ring (32), and the control rod (41) is circumferentially sleeved with a fourth sealing ring (31).

4. A self-priming impeller pump according to claim 1, characterized in that: The impeller assembly (09) comprises an impeller (37) arranged around the circumference of the rotating shaft (12), and the impeller (37) is arranged in a spiral shape.

5. A self-priming impeller pump according to claim 4, characterized in that: The impeller (37) is provided with an impeller sleeve (34) in the circumferential direction, and the impeller sleeve (34) is provided with auxiliary nozzles (35) and main nozzles (38) which are simultaneously connected to the second water outlet chamber (40).

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