A stirring pump

Abstract

The present invention relates to a stirring pump, which solves the problems of complex structure, unsatisfactory use effect, loss of pump efficiency and the like in the prior art. The technical solution adopted includes: a pump body with a water inlet and a water outlet, an impeller assembly arranged in the pump body, and a motor driving the impeller assembly to rotate. The pump body is characterized in that a water outlet channel matching the water outlet of the impeller assembly is provided, a through port is provided on the pump body, the through port is connected with the water outlet channel on the pump body, a flushing valve is provided on the pump body, the water inlet of the flushing valve is connected with the through port, and the water outlet of the flushing valve faces the water inlet of the pump body. The effect is: when the stirring pump is turned on, a high-pressure water flow is ejected from the outlet of the flushing valve to impact the sludge at the water inlet of the pump body, thereby achieving the effect of stirring the sludge. After the impact on the sludge is completed, the impact valve is closed to avoid the leakage of water in the pump body from the impact valve, which causes hydraulic loss when the stirring pump is working normally, and is conducive to improving the pump efficiency.

Description

Technical Field

[0001] The invention relates to a stirring pump, in particular to a stirring pump with an additional flushing valve. Background Art

[0002] At present, there are generally two modes for mixing pumps to mix sludge. One type of mixing pump is to extend the impeller shaft so that the impeller shaft extends out of the water inlet of the pump body, and install a stirring blade on the extended impeller shaft. The stirring blade runs at high speed when the water pump is started, and the stirring blade is used to mix the sludge at the water inlet. The characteristics of this type of mixing pump are: the stirring blade has a small range of mixing sludge, and the mixing effect is not ideal; the lengthened impeller shaft is easy to entangle with debris; the stirring blade wears quickly, and in severe cases, it will bend and fall off, causing water pump failure; the stirring blade increases the load and consumes more power.

[0003] Another type of stirring pump has several oblique small holes on the volute. When the pump is running, the high-pressure water flow in the volute is ejected to the water inlet through the small holes, which plays the role of stirring the sludge. If a greater stirring effect is to be achieved, larger holes need to be opened. The disadvantage is that the head loss is large and the pump efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide a stirring pump, in which a flushing valve is added to the pump body. After the stirring pump is started, the high-pressure water flow generated in the pump body pushes the valve core in the flushing valve to move in the direction away from the pump body until the flushing valve is closed. In the process of pushing the valve core, the high-pressure water flow is ejected from the outlet of the flushing valve to impact the silt at the water inlet of the pump body. After the impact on the silt is completed, the impact valve is closed to avoid the water flow in the pump body leaking from the impact valve and causing hydraulic loss when the stirring pump is working normally, which is beneficial to improving the pump efficiency; after the water pump is stopped, the water flow pressure in the pump body becomes zero, the valve core is reset, and the flushing valve returns to the initial state, waiting for the next start of the stirring pump.

[0005] The above technical objectives of the present invention are mainly solved through the following technical solutions: a stirring pump, comprising a pump body with a water inlet and a water outlet, an impeller assembly arranged in the pump body, and a motor that drives the impeller assembly to rotate, characterized in that the pump body has a water outlet channel that cooperates with the water outlet of the impeller assembly, a through port is arranged on the pump body, the through port is connected with the water outlet channel on the pump body, a flushing valve is arranged on the pump body, the water inlet of the flushing valve is connected with the through port, and the water outlet of the flushing valve faces the water inlet of the pump body.

[0006] After the mixing pump is started, the high-pressure water flow generated in the pump body pushes the valve core in the flushing valve to move in the direction away from the pump body until the flushing valve is closed. In the process of pushing the valve core, high-pressure water is ejected from the outlet of the flushing valve to impact the silt at the water inlet of the pump body. After the impact on the silt is completed, the impact valve is closed to prevent the water flow in the pump body from leaking from the impact valve and causing hydraulic loss when the mixing pump is working normally, which is beneficial to improving the pump efficiency. After the water pump is stopped, the water flow pressure in the pump body becomes zero, the valve core is reset, and the flushing valve returns to its initial state, waiting for the next start-up of the mixing pump.

[0007] As a further improvement and supplement to the above technical solution, the present invention adopts the following technical measures: the flushing valve includes a valve seat, a valve nozzle cooperating with the valve seat, a valve core arranged in a valve cavity formed by the valve seat and the valve nozzle, and a return spring whose two ends respectively cooperate with the valve core and the inner wall of the valve nozzle, and the water inlet channel and the water outlet channel in the valve nozzle are arranged at an angle.

[0008] After the mixing pump is turned on, the water pump starts, and a high-pressure water flow is generated in the pump body, pushing the valve core to compress the return spring until the valve core is completely in contact with the inner wall of the valve mouth, and the return spring is no longer compressed, so the flushing valve is closed; after the water pump is stopped, the water flow pressure in the pump body becomes zero, and the valve core returns to its initial position under the action of the rebound force of the return spring, waiting for the next start-up to flush the silt at the water inlet of the pump body.

[0009] The valve core realizes time control of impacting silt in the process of being pushed by high-pressure water flow, and the time control is determined by the elastic force of the return spring or the stroke of the valve core movement.

[0010] The water outlet channel on the pump body is a volute channel, the through port is radially arranged, the axis of the inner cavity of the valve seat is radially arranged, and the fixed position of the valve seat corresponds to the volute channel. The inlet of the flushing valve corresponds to the through port and is ejected by the water flow in the volute channel, which is conducive to improving the impact force of the water flow entering the flushing valve and improving the stirring effect.

[0011] The valve seat is in the shape of an integral wine glass, and includes a first pipe section, a flange and a flared pipe section respectively arranged at both ends of the first pipe section, and a second pipe section connected to the flared pipe section, the second pipe section is arranged away from the first pipe section, the diameter of the second pipe section is larger than the diameter of the first pipe section, the valve core is arranged in the inner cavity of the second pipe section, the diameter of the large-mouth end of the flared pipe section is larger than the valve core, and the diameter of the small-mouth end is smaller than the valve core.

[0012] The flange is used to fix to the pump body through the connector. The expanded pipe section is used to smoothly form the second pipe section with a larger inner diameter, which is convenient for setting the valve core. Usually the valve core adopts a spherical structure, which is conducive to the smooth closing of the flushing valve.

[0013] The valve nozzle includes a third pipe segment and a fourth pipe segment arranged at an angle to the third pipe segment, the third pipe segment is threadedly connected with the internal thread on the second pipe segment through the external thread thereon, the inner wall of the third pipe segment and the second pipe segment at the matching position is trumpet-shaped, and the end of the third pipe segment facing the second pipe segment is a trumpet-shaped large-mouth end, the diameter of the large-mouth end of the trumpet-shaped inner wall is larger than the valve core, and the diameter of the small-mouth end matching the trumpet-shaped inner wall is smaller than the valve core.

[0014] The structure of the valve mouth cooperates with the valve seat to form a suitable valve cavity, so that the valve core can smoothly move axially in the valve cavity.

[0015] The angle between the axis of the fourth pipe section and the axis of the third pipe section is 60-80 degrees. This technical solution is used to ensure that the valve nozzle can be smoothly aligned with the water inlet of the pump body to achieve the effect of effectively stirring the sludge.

[0016] The axial length of the external thread on the third pipe section is less than the axial length of the internal thread on the second pipe section. This technical solution is conducive to adjusting the position of the valve nozzle relative to the valve nozzle, so that the valve nozzle is closer to the valve body or farther away from the valve body, which is conducive to the flushing valve being applicable to stirring pumps of different specifications and sizes, improving the applicability of the flushing valve, and enabling the valve nozzle to always be aligned with the water inlet of the pump body.

[0017] The connecting transition part between the inner cavity of the fourth pipe section and the inner cavity of the third pipe section is spherical. In order to avoid hindering the impact force entering the flushing valve, a spherical surface transition is adopted to smoothly change the direction of the water flow and reduce the loss of impact force.

[0018] In order to further reduce the impact of the water flow in the flush valve, a spring receiving ring is provided on the inner wall of the third pipe section, and the radial dimension of the spring receiving ring is adapted to the transverse dimension of the reset spring. The reset spring is kept away from the main channel of the water flow as much as possible, and the reset spring is embedded on the inner wall of the third pipe section.

[0019] Preferably, the diameter of the small end of the trumpet-shaped inner wall is equal to the outer diameter of the spring receiving ring, the small end of the trumpet-shaped inner wall and the spring receiving ring are matched in spacing, and a return spring accommodating chamber is formed between the small end of the trumpet-shaped inner wall and the spring receiving ring.

[0020] The invention has the beneficial effect that when the stirring pump is turned on, high-pressure water flows out from the outlet of the flushing valve to impact the sludge at the water inlet of the pump body, thereby achieving the effect of stirring the sludge. The valve core realizes time control of impacting the sludge during the process of being pushed by the high-pressure water flow, and the time control is determined by the elastic force of the return spring or the stroke of the valve core movement. After the impact on the sludge is completed, the impact valve is closed to avoid the leakage of water in the pump body from the impact valve, which causes hydraulic loss when the stirring pump is working normally, and is conducive to improving the pump efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0023] Figure 3 It is a cross-sectional structural schematic diagram of the flushing valve in the present invention.

[0024] Figure 4 It is a schematic diagram of an exploded structure of the flushing valve in the present invention. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0026] Embodiment: A stirring pump comprises a pump body 2 having a water inlet 1 and a water outlet, an impeller assembly arranged in the pump body, and a motor driving the impeller assembly to rotate. The pump body has a water outlet channel 4 that cooperates with the water outlet of the impeller assembly, a through port 5 is arranged on the pump body, and the through port is connected with the water outlet channel on the pump body. A flushing valve 3 is arranged on the pump body, and a water inlet 6 of the flushing valve is connected with the through port, and the water outlet of the flushing valve faces the water inlet of the pump body.

[0027] After the mixing pump is started, the high-pressure water flow generated in the pump body pushes the valve core in the flushing valve to move in the direction away from the pump body until the flushing valve is closed. In the process of pushing the valve core, high-pressure water is ejected from the outlet of the flushing valve to impact the silt at the water inlet of the pump body. After the impact on the silt is completed, the impact valve is closed to prevent the water flow in the pump body from leaking from the impact valve and causing hydraulic loss when the mixing pump is working normally, which is beneficial to improving the pump efficiency. After the water pump is stopped, the water flow pressure in the pump body becomes zero, the valve core is reset, and the flushing valve returns to its initial state, waiting for the next start-up of the mixing pump.

[0028] The flushing valve includes a valve seat 8, a valve mouth 9 matched with the valve seat, a valve core 10 arranged in a valve cavity formed by the valve seat and the valve mouth, and a return spring 11 whose two ends respectively match the valve core and the inner wall of the valve mouth, and the water inlet channel and the water outlet channel in the valve mouth are arranged at an angle.

[0029] After the mixing pump is turned on, the water pump starts, and a high-pressure water flow is generated in the pump body, pushing the valve core to compress the return spring until the valve core is completely in contact with the inner wall of the valve mouth, and the return spring is no longer compressed, so the flushing valve is closed; after the water pump is stopped, the water flow pressure in the pump body becomes zero, and the valve core returns to its initial position under the action of the rebound force of the return spring, waiting for the next start-up to flush the silt at the water inlet of the pump body.

[0030] The valve core can control the time of impacting the sludge during the process of being pushed by high-pressure water flow. The time control is determined by the elastic force of the return spring or the stroke of the valve core. According to the sludge conditions in the use environment of the mixing pump, the appropriate return spring and valve core movement stroke can be selected to make the impact valve impact the sludge within the appropriate time.

[0031] The water outlet channel 4 on the pump body is a volute channel, the through port 5 is radially arranged, the axis of the inner cavity of the valve seat 8 is radially arranged, and the fixed position of the valve seat corresponds to the volute channel. The inlet of the flushing valve corresponds to the through port and is ejected by the water flow in the volute channel, which is beneficial to improve the impact force of the water flow entering the flushing valve and improve the stirring effect.

[0032] The valve seat 8 is in the shape of an integral wine glass, and includes a first pipe section 82, a flange 81 and a flared pipe section 83 respectively arranged at both ends of the first pipe section, and a second pipe section 84 connected to the flared pipe section, the second pipe section is arranged away from the first pipe section, the diameter of the second pipe section is larger than the diameter of the first pipe section, the valve core is arranged in the inner cavity of the second pipe section, the diameter of the large-mouth end of the flared pipe section is larger than the valve core, and the diameter of the small-mouth end is smaller than the valve core.

[0033] The flange is used to fix to the pump body through the connector. The expanded pipe section is used to smoothly form the second pipe section with a larger inner diameter, which is convenient for setting the valve core. Usually the valve core adopts a spherical structure, which is conducive to the smooth closing of the flushing valve.

[0034] The valve nozzle 9 includes a third pipe segment 91 and a fourth pipe segment 92 which is arranged at an angle to the third pipe segment. The third pipe segment is threadedly connected with the internal thread 94 on the second pipe segment through the external thread 93 thereon. The inner wall of the matching portion between the third pipe segment and the second pipe segment is trumpet-shaped. The end of the third pipe segment facing the second pipe segment is a trumpet-shaped large-mouth end. The diameter of the large-mouth end of the trumpet-shaped inner wall is larger than that of the valve core, and the diameter of the small-mouth end matching the trumpet-shaped inner wall is smaller than that of the valve core.

[0035] The structure of the valve mouth cooperates with the valve seat to form a suitable valve cavity, so that the valve core can smoothly move axially in the valve cavity.

[0036] The angle between the axis of the fourth pipe section and the axis of the third pipe section is 60-80 degrees. This technical solution is used to ensure that the valve nozzle can be smoothly aligned with the water inlet of the pump body to achieve the effect of effectively stirring the sludge.

[0037] The axial length of the external thread on the third pipe section is less than the axial length of the internal thread on the second pipe section. This technical solution is conducive to adjusting the position of the valve nozzle relative to the valve nozzle, so that the valve nozzle is closer to the valve body or farther away from the valve body, which is conducive to the flushing valve being applicable to stirring pumps of different specifications and sizes, improving the applicability of the flushing valve, and enabling the valve nozzle to always be aligned with the water inlet of the pump body.

[0038] The connecting transition part between the inner cavity of the fourth pipe section and the inner cavity of the third pipe section is in a spherical crown shape 95. In order to avoid hindering the impact force entering the flushing valve, a spherical surface transition is adopted to smoothly change the direction of the water flow and reduce the loss of impact force.

[0039] In order to further reduce the impact of the water flow in the flush valve, a spring receiving ring 96 is provided on the inner wall of the third pipe section, and the radial dimension of the spring receiving ring is adapted to the transverse dimension of the return spring. The return spring is kept away from the main channel of the water flow as much as possible, and the return spring is embedded on the inner wall of the third pipe section.

[0040] Preferably, the diameter of the small end of the trumpet-shaped inner wall is equal to the outer diameter of the spring receiving ring, the small end of the trumpet-shaped inner wall and the spring receiving ring are matched in spacing, and a return spring accommodating chamber 97 is formed between the small end of the trumpet-shaped inner wall and the spring receiving ring.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. In the above embodiments, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stirring pump, comprising a pump body having a water inlet and a water outlet, an impeller assembly arranged in the pump body, and a motor driving the impeller assembly to rotate, characterized in that The pump body is provided with a water outlet channel matched with the water outlet of the impeller assembly, the pump body is provided with a through port, the through port is communicated with the water outlet channel on the pump body, the pump body is provided with a flushing valve, the water inlet of the flushing valve is communicated with the through port, and the water outlet of the flushing valve faces the water inlet of the pump body; The flushing valve comprises a valve seat, a valve nozzle matched with the valve seat, a valve core arranged in a valve cavity formed by the valve seat and the valve nozzle, a return spring with two ends respectively matched with the valve core and the inner wall of the valve nozzle, and a water inlet channel and a water outlet channel in the valve nozzle are arranged at an angle; The valve seat is in the shape of an integral wine glass, and comprises a first pipe section, flanges and flared pipe sections respectively arranged at both ends of the first pipe section, and a second pipe section connected to the flared pipe section, wherein the second pipe section is arranged away from the first pipe section, the diameter of the second pipe section is larger than the diameter of the first pipe section, the valve core is arranged in the inner cavity of the second pipe section, the diameter of the large-mouth end of the flared pipe section is larger than the valve core, and the diameter of the small-mouth end is smaller than the valve core; The valve nozzle includes a third pipe segment and a fourth pipe segment arranged at an angle to the third pipe segment, the third pipe segment is threadedly connected with the internal thread on the second pipe segment through the external thread thereon, the inner wall of the third pipe segment and the second pipe segment at the matching position is trumpet-shaped, and the end of the third pipe segment facing the second pipe segment is a trumpet-shaped large-mouth end, the diameter of the large-mouth end of the trumpet-shaped inner wall is larger than the valve core, and the diameter of the small-mouth end matching the trumpet-shaped inner wall is smaller than the valve core.

2. The stirring pump according to claim 1, characterized in that The water outlet channel on the pump body is a volute channel, the through port is radially arranged, the axis of the inner cavity of the valve seat is radially arranged, and the fixed position of the valve seat corresponds to the volute channel.

3. The stirring pump according to claim 1, characterized in that The angle between the axis of the fourth pipe section and the axis of the third pipe section is 60-80 degrees.

4. The stirring pump according to claim 1, characterized in that The axial length of the external thread on the third pipe segment is smaller than the axial length of the internal thread on the second pipe segment.

5. The stirring pump according to claim 1, characterized in that The connecting transition portion between the inner cavity of the fourth tube segment and the inner cavity of the third tube segment is in a spherical cap shape.

6. The stirring pump according to claim 4, characterized in that A spring receiving ring is arranged on the inner wall of the third pipe section, and the radial dimension of the spring receiving ring is adapted to the transverse dimension of the return spring.

7. The stirring pump according to claim 6, characterized in that The diameter of the small end of the trumpet-shaped inner wall is equal to the outer diameter of the spring receiving ring, and the small end of the trumpet-shaped inner wall is matched with the spring receiving ring in spacing, and a return spring accommodating chamber is formed between the small end of the trumpet-shaped inner wall and the spring receiving ring.

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