A cutting pump

Abstract

The application relates to a cutting pump, a cutting pump comprising a base, a motor, a pump shaft, an impeller, a pump body with a chamber and a volute with an inner cavity, the volute being fixed at the bottom end of the pump body, the base being fixed at the bottom end of the volute, the motor being fixed in the chamber, the output shaft of the motor being coaxially fixed on the pump shaft, the bottom end of the pump shaft extending into the inner cavity of the volute and being coaxially fixedly connected with the impeller, and an auxiliary tilting device comprising a detection device, a driving element one and a jacking rod, the jacking rod being slidingly connected on the base, the driving element one driving the jacking rod to slide on the base, and the detection device being used for detecting whether the water inlet is blocked; when the water inlet is blocked, the bottom end of the jacking rod is driven by the driving element one to move out of the base, the jacking rod and an angle of the base jointly tilt the volute and the pump body to be supported on the pool bottom or the jacking rod pushes the pump body to be in a completely tilted state. The orientation of the water inlet is changed along with the tilting of the cutting pump, the cutting space below the base is enlarged, and the silt can be better stirred, so that the cutting pump can be restored to run.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pumps, and in particular to a cutting pump. BACKGROUND

[0002] The cutting pump is also known as a manure pump or a double-knife cutting pump. Compared with a common sewage pump, the cutting pump has some differences in structure. The bottom of the machine body has a set of high-strength cutting impellers, which can easily cut fibers, manure, branches and other sundries. The machine body structure is small and has good environmental adaptability.

[0003] The utility model discloses a cutting pump, and relates to the cutting pump technical field, it includes the pump body, the pump body is equipped with the pump cavity, and the pump body is equipped with the water inlet and the water outlet, the pump cavity is equipped with the impeller, and the impeller is rotatably connected with the pump body, and the impeller has the moving knife edge on it, and the water inlet is equipped with the fixed cutter disc, and a plurality of water holes are formed in the fixed cutter disc, the fixed cutter disc is located at one end of the impeller axial and is in contact with the moving knife edge, and the hole wall of the water hole is matched with the moving knife edge to rotate to realize cutting, the end of the impeller close to the fixed cutter disc is coaxially fixed with the transmission shaft, and the transmission shaft is arranged in the fixed cutter disc and is rotatably connected with the fixed cutter disc, the transmission shaft is equipped with the main knife edge, and the main knife edge is located at the side of the fixed cutter disc away from the impeller and is in contact with the fixed cutter disc, and the main knife edge is matched with the hole wall of the water hole to realize cutting.

[0004] The related technical solutions have the following defects: if the sludge is not cleaned for a long time, the sludge will be pressed tightly, and when the pump is placed vertically, the tightly pressed sludge may block the water inlet, resulting in no water entering and the water pump not pumping water. SUMMARY

[0005] In order to improve the phenomenon of the cutting pump water inlet being blocked by the sludge at the bottom of the pool, the present application provides a cutting pump.

[0006] The cutting pump provided by the present application adopts the following technical solutions:

[0007] The utility model provides a cutting pump, a cutting pump includes base, motor, pump shaft, impeller, fixed knife disc, cutting blade, pump body with chamber and volute with inner chamber, the volute is equipped with water inlet and water outlet, the volute is fixed in the bottom end of pump body, the base is fixed in the bottom end of volute, the base supports volute and pump body in the pool bottom, the chamber is closed, the motor is fixed in the chamber, the output shaft of motor is coaxial fixed in pump shaft, the bottom end of pump shaft stretches to the inner chamber of volute and is coaxial fixed connection with impeller, the fixed knife disc sets up at the water inlet of volute and is located the side of impeller away from motor, the fixed knife disc is equipped with a plurality of water holes, the pump shaft is connected with cutting blade and is set in the fixed knife disc away from motor, cutting blade rotates and fits the hole wall of water hole and realizes cutting, its characterized in that: still includes auxiliary inclination device, the auxiliary inclination device includes detection device, drive piece no.

[0008] When the pump is put vertically into the pool, the compact silt in the pool bottom may block the water inlet, at this time, the detection device can detect whether the water inlet is blocked, if not, the cutting pump operates normally, if the water inlet is blocked, the drive piece no. drives the top rod to move out of the base, during the process that the bottom end of the top rod extends out of the base, the top rod and a corner of the base jointly support the volute and the pump body in the pool bottom, at this time, the cutting pump is in an inclined state, the orientation of the water inlet is changed with the inclination of the cutting pump, the cutting space below the base becomes larger, and the silt can be better stirred, so that the cutting pump resumes operation, and the blocking phenomenon of the silt in the pool bottom to the water inlet of the cutting pump is improved.

[0009] Preferably, the drive piece no. includes a linkage, a movable block, a first bevel gear, a second bevel gear, a rotating rod, a first spring, and a pushing piece, the movable block is rotationally connected to the base, the top end of the top rod is slidingly connected to the movable block in a direction parallel to the movement direction of the top rod, the movable block is slidingly connected to the base in the direction parallel to the sliding direction of the top rod, the axis direction of the movable block is parallel to the sliding direction of the top rod, and the movable block is rotationally connected to the base in the axis direction;

[0010] The rotating rod is rotationally connected to the base in a direction perpendicular to the rotation axis of the movable block, the first bevel gear is coaxially fixed to the rotating rod, the second bevel gear is coaxially fixed to the top end of the movable block, the second bevel gear is below the first bevel gear and is used to meshingly connect to the first bevel gear, and the pump shaft drives the rotating rod to rotate through the linkage.

[0011] The first spring is arranged on the movable block and drives the movable block to move towards the side of the first bevel gear all the time, when the detecting device detects that the water inlet is normally water-filled, the pusher is used to push the movable block to move towards the side away from the first bevel gear to the second bevel gear not meshing with the first bevel gear, when the detecting device detects that the water inlet is blocked, the pusher does not act on the movable block.

[0012] By adopting the above technical scheme, when the detecting device detects that the water inlet is normally water-filled, the pusher acts on the movable block to prevent the first bevel gear and the second bevel gear from meshing, the movable block cannot be driven to rotate by the pump shaft, so that the top rod does not move, and the cutting pump can still be vertically placed on the pool bottom through the base; when the detecting device detects that the water inlet is blocked, the pusher does not act on the movable block, the movable block moves to the second bevel gear meshing with the first bevel gear under the action of the first spring, the pump shaft drives the rotating rod to rotate through the linkage, the rotating rod drives the movable block to rotate through the meshing connection of the first bevel gear and the second bevel gear, the movable block drives the top rod to rotate, and the top rod extends out of the base while rotating through the threaded connection with the base, so that the cutting pump is in an inclined state.

[0013] Preferably, the linkage comprises a third bevel gear, a fourth bevel gear, a first shaft and a transmission belt, the first shaft is rotationally connected to the fixed cutter disc along the axis direction parallel to the pump shaft, the transmission belt is wound on the first shaft and the pump shaft, the axis direction of the rotating rod is perpendicular to the axis direction of the pump shaft, the third bevel gear is coaxially fixedly connected to the first shaft, the fourth bevel gear is coaxially fixedly connected to the rotating rod, and the third bevel gear is meshingly connected to the fourth bevel gear.

[0014] By adopting the above technical scheme, when the pump shaft rotates, the pump shaft drives the first shaft to rotate through the transmission belt, and the first shaft drives the rotating rod to rotate through the meshing of the third bevel gear and the fourth bevel gear, so that the rotating rod and the pump shaft rotate synchronously.

[0015] Preferably, the pusher comprises a rotating disc, a push rod, a deformable ring sleeve, a plurality of first rods and a plurality of second springs, the detecting device comprises a rotating shaft and a plurality of detecting blades, an inner groove for the detecting blades to move is formed in the inner wall of the water outlet, the rotating shaft is rotationally connected to the inner groove, the plurality of detecting blades are fixed on the rotating shaft along the circumferential direction, and the end portion of the detecting blade located on the side close to the water outlet is located in the water flow passing through the water outlet and can be pushed by the flowing water.

[0016] The base is provided with a cylindrical groove, the end of the rotating shaft extending out of the water outlet extends into the cylindrical groove, the rotating disc is located in the cylindrical groove and coaxially fixedly connected to the rotating shaft, a plurality of first grooves are sequentially provided on the outer wall of the rotating disc in the circumferential direction, the plurality of first grooves correspond to the plurality of first rods respectively, the first rods are slidingly connected in the corresponding first grooves along the depth direction of the first grooves, the ring sleeve is sleeved on the rotating disc, one end of the first rod away from the bottom wall of the first groove is fixed on the inner wall of the ring sleeve, a plurality of second springs correspond to the plurality of first rods respectively, the two ends of the second spring are arranged on the bottom wall of the corresponding first groove and the corresponding first rod respectively, and the second spring is always in a stretched state.

[0017] The pushing rod is slidingly connected to the base along the sliding direction of the movable block, and the pushing rod is provided with a third spring for driving the end of the pushing rod to extend into the cylindrical groove and abut against the outer wall of the ring sleeve.

[0018] When the rotating shaft stops rotating or the rotating speed is obviously smaller than the normal use speed of the cutting pump, the pushing rod does not affect the second bevel gear and the movable block, when the rotating shaft normally rotates, the pushing rod always abuts against the second bevel gear or the movable block and drives the second bevel gear not to be meshingly connected with the second bevel gear.

[0019] By adopting the above technical scheme, when the rotating shaft stops rotating or the rotating speed is obviously smaller than the normal use speed of the cutting pump, the first rod cannot move out of the first groove under the action of the centrifugal force, so the ring sleeve cannot be expanded by the first rod, the ring sleeve cannot push the pushing rod, the second bevel gear remains in the meshing state with the first bevel gear, the jacking rod continuously moves out, the cutting space below the base becomes larger, until the water inlet is no longer blocked, at this time, the water outlet will also normally discharge water, the rotating shaft normally rotates, the first rod moves out of the first groove under the action of the centrifugal force, the ring sleeve is expanded, the expanded ring sleeve exerts force on the pushing rod and drives the pushing rod to move towards the movable block side, the pushing rod continuously pushes the second bevel gear and the movable block, prevents the meshing of the first bevel gear and the second bevel gear, and makes the jacking rod no longer move downward.

[0020] Preferably, the time difference control device further comprises a locking device and a deceleration block, the locking device is used to lock the position of the movable block on the base, when the locking device locks the movable block on the base, the first bevel gear is away from the second bevel gear;

[0021] The base is provided with a vertical groove with the length direction parallel to the sliding direction of the movable block, the deceleration block is slidingly connected in the vertical groove along the length direction of the vertical groove, the end of the vertical groove close to the first bevel gear is provided in a tapered manner, and the movable block is rotationally connected to the deceleration block and moves together with the deceleration block;

[0022] When the pump shaft starts to rotate, the locking device unlocks the movable block, the deceleration block is used to decelerate the movement of the movable block before the second bevel gear moves to mesh with the first bevel gear, when the water inlet normally intakes water, the push rod drives the second bevel gear away from the first bevel gear before the first bevel gear meshes with the second bevel gear.

[0023] By adopting the above technical scheme, when the cutting pump normally operates, there is a time difference in the process that water comes in from the water inlet and then goes out from the water outlet, and when the cutting pump starts, the pump shaft will immediately rotate to drive the first bevel gear to rotate, the rotating shaft will not immediately rotate because the water in the water outlet has not arrived, so if the movable block is not limited at this time, the movable block will immediately drive the push rod to move down in the case that the first bevel gear meshes with the second bevel gear, if the water inlet is not blocked when the cutting pump is placed in the vertical state, the push rod actually does not need to move out, but it will affect the service life of the push rod; therefore, after the locking device unlocks the movable block, the movement of the movable block is decelerated through the cooperation of the deceleration block and the vertical slot, giving the push rod a reaction time, when the water inlet normally intakes water, the push rod timely pushes away the movable block to prevent the first bevel gear from meshing with the second bevel gear, so that the push rod does not move.

[0024] Preferably, the locking device comprises a first rack, a second rack, a main gear and a fixed block, the first rack and the second rack are both slidingly connected to the base in the direction perpendicular to the sliding direction of the movable block, the main gear is rotationally connected to the base, the first rack and the second rack are respectively located on the two sides of the main gear and are meshingly connected to the main gear, an insertion slot for matching the end of the first rack is formed in the side wall of the movable block, a fourth spring is arranged on the second rack to drive the second rack to always move away from the insertion slot, the end of the second rack away from the first rack can extend out of the base, an inclined surface is formed on the end of the second rack extending out of the base to affect the rotating direction of the cutting blade, the fixed block is fixed on the cutting blade, when the end of the first rack extends into the insertion slot, the first bevel gear moves away from the second bevel gear, when the pump shaft rotates, the fixed block abuts against the inclined surface and drives the second rack to move towards the insertion slot, and the first rack is separated from the insertion slot.

[0025] By adopting the above technical scheme, when the pump shaft rotates, the cutting blade rotates around the pump shaft to drive the fixed block to move, the fixed block acts on the inclined surface to drive the second rack to move towards the insertion slot, and then the main gear drives the first rack to move towards the side away from the insertion slot to separate from the insertion slot, at this time, the movable block is unlocked, and the movable block can move towards the first bevel gear under the action of the first spring.

[0026] Preferably, the anti-collision protection device further comprises an inflator and an airbag, the airbag is arranged on the outer wall of the pump body away from the water outlet, and the inflator is used to inflate the airbag when the pump body is tilted, and the airbag contacts the pool bottom earlier than the pump body when the pump body is tilted.

[0027] By using the above technical scheme, the airbag is inflated by using the inflator when the pump body is tilted, and the airbag plays a buffering role when the pump body contacts the pool bottom or impurities, thereby protecting the entire cutting pump.

[0028] Preferably, the inflator comprises a first weight, two second weights and two fifth springs, the pump body is coaxially provided with an annular groove, the first weight is fixed in the annular groove and close to the side of the pump body away from the water outlet, the second weight is slidingly connected in the annular groove in the circumferential direction of the annular groove, the two second weights are respectively located on the two sides of the annular groove, the two fifth springs correspond to the two second weights respectively, the two ends of the fifth spring are fixed on the first weight and the corresponding second weight respectively, the part of the annular groove between the two first weights is a compression cavity in a closed state, the second weight is located in the compression cavity, the second weight and the pump body are jointly provided with a communication channel, the two ends of the communication channel are respectively communicated with the compression cavity and the airbag, when the pump body is in a vertical state, the two second weights are respectively away from the first weight and located on the two sides of the pump body in the axial direction, when the pump body is tilted, the second weight moves towards the first weight, and the airbag is inflated.

[0029] By using the above technical scheme, when the top rod is extended to drive the pump body to be tilted, the two second weights move towards the side of the first weight, the volume of the compression cavity is reduced, the gas in the compression cavity enters the airbag from the communication channel to inflate the airbag, and the movement of the two second weights also changes the center of gravity of the pump body to help the pump body to be tilted; when the pump body is vertically placed, the second weight moves away from the first weight under the action of the corresponding fifth spring, the gas in the airbag returns to the compression cavity, and the airbag no longer expands, and the weight moves to the corresponding position to balance the center of gravity of the pump body.

[0030] In summary, the present application has at least one of the following beneficial technical effects:

[0031] By arranging the top rod, if the water inlet is blocked, the top rod and a corner of the base together tilt the volute and the pump body to be supported on the pool bottom during the process that the bottom end of the top rod extends out of the base, the cutting space below the base will become larger, and the accumulated substances can be better stirred, so that the cutting pump can be restored to operation, and the phenomenon of blockage of the water inlet of the cutting pump by the accumulated substances on the pool bottom is improved.

[0032] By setting the inflating device and the inflating bag, the inflating device is used to inflate the inflating bag when the pump body is poured, the inflating bag plays a buffering role when the pump body contacts the pool bottom or impurities, and the whole cutting pump is protected. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a whole structure schematic diagram of the embodiment of the application.

[0034] Figure 2 is a sectional view along the line A-A in Figure 1

[0035] Figure 3 is a schematic diagram of the cutting pump in a tilted state of the embodiment of the application.

[0036] Figure 4 is a sectional view along the line B-B in Figure 1

[0037] is an enlarged view of Figure 5 Figure 4

[0038] Figure 6 is a sectional view along the line D-D in Figure 3

[0039] Figure 7 is an enlarged view of Figure 6

[0040] Figure 8 is an enlarged view of Figure 2

[0041] Figure 9 is a cooperation schematic diagram of the fixed cutter head and the cutting blade of the embodiment of the application.

[0042] Figure 10 is an enlarged view of Figure 9

[0043] Figure 11 is a sectional view along the line H-H in Figure 1

[0044] ​​​​​​​​Explanation of reference numerals: 11, base; 111, cylindrical groove; 112, side groove; 113, horizontal groove; 114, vertical groove; 12, pump body; 121, motor; 122, chamber; 123, annular groove; 124, compression cavity; 13, volute; 131, inner cavity; 132, water inlet; 133, water outlet; 1331, inner groove; 14, pump shaft; 141, impeller; 15, fixed cutter disc; 151, cutting blade; 152, water passage hole; 2, auxiliary tilting device; 21, detection device; 211, rotating shaft; 212, detection blade; 22, driving member one; 221, movable block; 2211, insertion slot; 222, first bevel gear; 223, second bevel gear; 224, rotating rod; 225, elastic member; 2251, first spring; 23, jacking rod; 24, linkage member; 241, third bevel gear; 242, fourth bevel gear; 243, first shaft; 244, transmission belt; 25, pushing member; 251, rotating disc; 2511, first groove; 252, pushing rod; 2521, side block; 253, ring sleeve; 254, first rod; 255, second spring; 256, third spring; 257, rolling ball; 3, time difference control device; 31, locking device; 311, first rack; 3111, inclined surface; 312, second rack; 313, main gear; 314, fixed block; 32, deceleration block; 33, fourth spring; 4, anti-collision protection device; 41, inflating device; 411, first counterweight block; 412, second counterweight block; 413, fifth spring; 42, inflatable airbag; 43, communication channel. DETAILED DESCRIPTION

[0045] The following will be described in detail below with reference to the accompanying drawings. Figures 1-11 The present application is further described in detail.

[0046] The present application discloses a cutting pump.

[0047] Reference will be made to Figure 1 , Figure 2The cutting pump of the embodiment comprises a base 11, a motor 121, a pump shaft 14, an impeller 141, a fixed cutter disc 15, a cutting blade 151, a pump body 12 with a cavity 122, and a volute 13 with an inner cavity 131. The volute 13 is fixed at the bottom end of the pump body 12, and the base 11 is fixed at the bottom end of the volute 13. The base 11 supports the volute 13 and the pump body 12 on the ground. When the base 11 supports the volute 13 and the pump body 12 on the horizontal plane, the axis direction of the pump shaft 14 is vertically arranged. The volute 13 is provided with a water inlet 132 and a water outlet 133. The water inlet 132 is located on the side of the volute 13 close to the base 11, and the water outlet 133 is located at the opening of the volute 13 in the spiral direction. The cavity 122 is arranged in a closed manner, and the motor 121 is fixed in the cavity 122. The output shaft of the motor 121 is vertically arranged downward and is coaxially fixed on the pump shaft 14. The bottom end of the pump shaft 14 extends into the inner cavity 131 of the volute 13 and is coaxially fixedly connected with the impeller 141. The fixed cutter disc 15 is fixed on the volute 13 and is located at the water inlet 132 of the volute 13. The fixed cutter disc 15 is located on the side of the impeller 141 away from the motor 121. A plurality of water passing holes 152 are formed in the fixed cutter disc 15. The bottom end of the pump shaft 14 penetrates the fixed cutter disc 15 and is rotationally connected to the fixed cutter disc 15. The cutting blade 151 is fixedly connected to the bottom end of the pump shaft 14 extending out of the fixed cutter disc 15. The cutting blade 151 rotationally cooperates with the hole wall of the water passing hole 152 to realize cutting.

[0048] Referring to Figure 1 , Figure 2 When the cutting pump is started, the output shaft of the motor 121 rotates to drive the impeller 141 and the cutting blade 151 to rotate through the pump shaft 14. The impeller 141 rotates to suck pool water from the space of the base 11 into the inner cavity 131 of the volute 13. Before entering the inner cavity 131 of the volute 13, the pool water will be cut by the cutting blade 151 to form small-sized impurities from large-sized impurities in the water. Then the pool water enters the inner cavity 131 of the volute 13 through the water passing hole 152. Under the action of centrifugal force, the pool water is thrown out of the water outlet 133 along the circumferential inner wall of the inner cavity 131 of the volute 13. An external water pipe is connected at the outlet of the volute 13, which can pump the sewage in the medium pool away and discharge it to other places.

[0049] Referring to Figure 2 , 3 The cutting pump of the embodiment further comprises an auxiliary tilting device 2. The auxiliary tilting device 2 comprises a detection device 21, a driving member 22, and a top rod 23. Referring to Figure 4 , Figure 5 The top rod 23 is threadedly connected to the base 11, and the rotation axis direction of the top rod 23 is parallel to the axis direction of the pump shaft 14. The driving member 22 drives the top rod 23 to rotate on the base 11. Referring to Figure 2 , Figure 3, the detection device 21 is used to detect whether the water inlet 132 is blocked, when the detection device 21 detects that the water inlet 132 is blocked, referring to Figure 6 、 Figure 7 , the driving part one 22 drives the top rod 23 to rotate to make the bottom end of the top rod 23 move out of the base 11, at this time, the top rod 23 and an angle of the base 11 jointly incline the volute 13 and the pump body 12 to support on the pool bottom, if the part of the top rod 23 extending out of the base 11 is longer, the cutting pump loses control of the gravity center, and the top rod 23 pushes the pump body 12 to a completely tilted state.

[0050] Referring to Figure 4 、 Figure 5 , when the pump is vertically put into the pool, the accumulated substances on the pool bottom which are pressed tightly can block the water inlet 132, at this time, the detection device 21 can detect whether the water inlet 132 is blocked, if not, the cutting pump operates normally. Figure 6 、 Figure 7 , if the water inlet 132 is blocked, the driving part one 22 drives the top rod 23 to move out of the base 11, in the process of the bottom end of the top rod 23 extending out of the base 11, the top rod 23 and an angle of the base 11 jointly incline the volute 13 and the pump body 12 to support on the pool bottom, at this time, the cutting pump is in an inclined state, the orientation of the water inlet 132 is also changed with the inclination of the cutting pump, the cutting space below the base 11 will become larger, and the accumulated substances can be better stirred, so as to make the cutting pump resume operation and improve the blocking phenomenon of the cutting pump water inlet 132 by the accumulated substances on the pool bottom.

[0051] Referring to Figure 4 、 Figure 5 , the driving part one 22 includes a linkage 24, a movable block 221, a first bevel gear 222, a second bevel gear 223, a rotating rod 224, a first spring 2251 and a pushing part 25, the movable block 221 is rotationally connected on the base 11, the rotation axis direction of the movable block 221 is parallel to the axis direction of the pump shaft 14, and the movable block 221 is slidably connected on the base 11 along the axis direction, the top end of the top rod 23 is slidably connected on the movable block 221 along the sliding direction of the movable block 221, when the movable block 221 rotates, the movable block 221 can drive the top rod 23 to rotate synchronously, so as to control the movement of the top rod 23 on the base 11.

[0052] Referring to Figure 4 、 Figure 5The rotating rod 224 is rotatably connected to the base 11, and is located above the top rod 23. The axis of the rotating rod 224 is perpendicular to the axis of the pump shaft 14. The first bevel gear 222 is coaxially fixed to the rotating rod 224. The second bevel gear 223 is coaxially fixed to the top end of the movable block 221. The top rod 23 is located below the second bevel gear 223. The second bevel gear 223 is located below the first bevel gear 222 and is meshingly connected to the first bevel gear 222. The pump shaft 14 drives the rotating rod 224 to rotate through the linkage 24.

[0053] With reference to Figure 4 , Figure 5 The linkage 24 comprises a third bevel gear 241, a fourth bevel gear 242, a first shaft 243 and a transmission belt 244. The first shaft 243 is rotatably connected to the fixed cutter head 15 along the axis parallel to the axis of the pump shaft 14. The transmission belt 244 is wound around the first shaft 243 and the pump shaft 14. The third bevel gear 241 is coaxially fixed to the first shaft 243. The fourth bevel gear 242 is coaxially fixed to the rotating rod 224. The third bevel gear 241 is meshingly connected to the fourth bevel gear 242.

[0054] With reference to Figure 4 , Figure 5 When the pump shaft 14 rotates, the pump shaft 14 drives the first shaft 243 to rotate through the transmission belt 244. The first shaft 243 drives the rotating rod 224 to rotate through the meshing of the third bevel gear 241 and the fourth bevel gear 242, so as to realize the synchronous rotation of the rotating rod 224 and the pump shaft 14.

[0055] With reference to Figure 4 , Figure 5 The movable block 221 is provided with an elastic member 225 for driving the movable block 221 to always move towards the side of the first bevel gear 222. When the detection device 21 detects that the water inlet 132 normally intakes water, the pushing member 25 pushes the movable block 221 to move away from the first bevel gear 222 to the side of the second bevel gear 223, so that the second bevel gear 223 is not meshingly connected to the first bevel gear 222. Figure 6 , Figure 7 When the detection device 21 detects that the water inlet 132 is blocked, the pushing member 25 does not act on the movable block 221. At this time, the second bevel gear 223 moves to be meshingly connected to the first bevel gear 222.

[0056] With reference to Figure 4 , Figure 5 When the detection device 21 detects that the water inlet 132 normally intakes water, the pushing member 25 acts on the movable block 221 to prevent the meshing of the first bevel gear 222 and the second bevel gear 223. The movable block 221 cannot be driven to rotate by the pump shaft 14, so that the top rod 23 does not move, and the cutting pump can be vertically placed on the pool bottom through the base 11. With reference to Figure 6 ,Figure 7 When the detection device 21 detects that the water inlet 132 is blocked, the pusher 25 does not act on the movable block 221, and the movable block 221 moves to the second bevel gear 223 under the action of the elastic member 225, the pump shaft 14 drives the rotating rod 224 to rotate through the linkage 24, the rotating rod 224 drives the movable block 221 to rotate through the meshing connection of the first bevel gear 222 and the second bevel gear 223, the movable block 221 drives the top rod 23 to rotate, and the top rod 23 extends out of the base 11 while rotating through the threaded connection with the base 11, supports one side of the cutting pump, and makes the cutting pump in an inclined state.

[0057] Referring to Figure 2 , Figure 8 , the detection device 21 comprises a rotating shaft 211 and a plurality of detection blades 212, an inner groove 1331 is formed on the inner wall of the water outlet 133, the rotating shaft 211 is rotationally connected to the inner groove 1331 in the direction perpendicular to the axis of the pump shaft 14, and the plurality of detection blades 212 are uniformly fixed on the outer wall of the rotating shaft 211 in the circumferential direction of the rotating shaft 211. Some of the detection blades 212 located on the side of the rotating shaft 211 away from the water outlet 133 are movable in the inner groove 1331, and the end portions of some of the detection blades 212 located on the side of the rotating shaft 211 close to the water outlet 133 are located in the water flow passing through the water outlet 133 and can be pushed by the flowing water. When the water outlet 133 normally discharges water, the rotating shaft 211 also rotates normally.

[0058] Referring to Figure 4 , Figure 5 , the pusher 25 comprises a rotating disc 251, a push rod 252, a deformable ring 253, a plurality of first rods 254, and a plurality of second springs 255. A cylindrical groove 111 not connected to the outside is formed in the base 11, one end of the rotating shaft 211 extends out of the volute 13 and into the cylindrical groove 111, and the rotating disc 251 is located in the cylindrical groove 111 and coaxially fixedly connected to the end of the rotating shaft 211. A plurality of first grooves 2511 are sequentially formed on the circumferential outer wall of the rotating disc 251 in the circumferential direction, the length direction of the first grooves 2511 is perpendicular to the circumferential direction of the rotating shaft 211, and the extensions of the plurality of first grooves 2511 in the length direction intersect the rotating shaft 211 at the same point. The plurality of first grooves 2511 correspond to the plurality of first rods 254, respectively, and the first rods 254 are slidingly connected in the corresponding first grooves 2511 in the length direction of the first grooves 2511. The ring 253 can be made of rubber or silicone, etc., and the ring 253 is sleeved on the rotating disc 251, and one end of the first rod 254 away from the bottom wall of the first groove 2511 is fixed on the inner wall of the ring 253. The plurality of second springs 255 correspond to the plurality of first grooves 2511, respectively, and the two ends of the second spring 255 are arranged on the bottom wall of the corresponding first groove 2511 and on the side surface of the corresponding first rod 254 on the side of the bottom wall of the first groove 2511, respectively, and the second spring 255 is always in a stretched state.

[0059] With reference to Figure 4 , Figure 5 The push rod 252 is slidingly connected to the base 11 along a sliding direction parallel to the movable block 221, and is located directly below the ring sleeve 253. The push rod 252 is ball-hinged at the bottom end with a rolling ball 257, which is used to abut against the second bevel gear 223. The side wall of the push rod 252 is fixed with a side block 2521, and the base 11 is provided with a side slot 112. The side block 2521 is slidingly connected to the side slot 112 along a sliding direction parallel to the push rod 252. The side slot 112 is provided with a third spring 256, the two ends of which are respectively abutted against the bottom surface of the side block 2521 and the bottom wall of the side slot 112. The third spring 256 is always in a compressed state and drives the top end of the push rod 252 to extend upward into the cylindrical slot 111 and abut against the outer wall of the ring sleeve 253.

[0060] With reference to Figure 6 , Figure 7 When the rotating shaft 211 stops rotating or the rotating speed is significantly smaller than the rotating speed of the rotating shaft 211 in normal use of the cutting pump, the first rod 254 cannot move out of the first slot 2511 under the action of the centrifugal force, so the ring sleeve 253 cannot be pried open by the first rod 254. The ring sleeve 253 cannot push the push rod 252, so that the second bevel gear 223 remains in the meshing state with the first bevel gear 222, the top rod 23 continues to move out, and the cutting space below the base 11 becomes larger, until the water inlet 132 is no longer blocked. At this time, the water outlet 133 will also normally discharge water, the rotating shaft 211 rotates normally, the first rod 254 moves out of the first slot 2511 under the action of the centrifugal force, the ring sleeve 253 is pried open, and the pried open ring sleeve 253 will exert force on the push rod 252 and drive the push rod 252 to move toward the side of the movable block 221, so that the push rod 252 continuously pushes the second bevel gear 223 and the movable block 221, preventing the meshing of the first bevel gear 222 and the second bevel gear 223, so that the top rod 23 no longer moves downward.

[0061] With reference to Figure 4 , Figure 5The cutting pump of the embodiment further comprises a time difference control device 3, which comprises a locking device 31 and a deceleration block 32. The locking device 31 is used to lock the position of the movable block 221 on the base 11. The base 11 is provided with a vertical slot 114, which is parallel to the sliding direction of the movable block 221 in the length direction. The deceleration block 32 is slidably connected in the vertical slot 114 in the length direction of the vertical slot 114. The end of the vertical slot 114 close to the first bevel gear 222 is tapered. The movable block 221 is rotatably connected to the deceleration block 32. The elastic member 225 is a first spring 2251, which is located in the vertical slot 114. The two ends of the first spring 2251 abut against the bottom wall of the vertical slot 114 and the bottom wall of the deceleration block 32, respectively. The first spring 2251 is always in a compressed state and drives the deceleration block 32 to move towards the side of the first bevel gear 222. The movable block 221 always moves together with the deceleration block 32, and the deceleration block 32 does not rotate together with the movable block 221.

[0062] With reference to Figure 4 、 Figure 5 When the cutting pump is not working, the pump shaft 14 does not rotate. At this time, the locking device 31 locks the movable block 221 on the base 11. At this time, the second bevel gear 223 is not engaged with the first bevel gear 222 and is a distance away from the first bevel gear 222. When the pump shaft 14 starts to rotate, the locking device 31 unlocks the movable block 221. The deceleration block 32 is used to decelerate the movement of the movable block 221 before the second bevel gear 223 moves to engage with the first bevel gear 222. When the water inlet 132 normally intakes water, the push rod 252 drives the second bevel gear 223 to move away from the first bevel gear 222 before the first bevel gear 222 engages with the second bevel gear 223.

[0063] With reference to Figure 6 、 Figure 7When the cutting pump is running normally, there is a time difference in the process that water comes in from the water inlet 132 and then goes out from the water outlet 133, and when the cutting pump starts, the pump shaft 14 will immediately rotate to drive the first bevel gear 222 to rotate, and the rotating shaft 211 will not immediately rotate because the water in the water outlet 133 has not arrived, so at this time, if the movable block 221 is not limited, the movable block 221 will immediately drive the top rod 23 to move down under the meshing of the first bevel gear 222 and the second bevel gear 223, and if the water inlet 132 is not blocked when the cutting pump is placed in a vertical state, the top rod 23 actually does not need to move out, but it affects the service life of the top rod 23; therefore, after the locking device 31 is set to unlock the movable block 221, and then the movable block 221 is slowed down by the cooperation of the speed reducer 32 and the vertical groove 114, the reaction time of the push rod 252 is given, when the water inlet 132 normally water, the push rod 252 timely pushes away the movable block 221, prevents the meshing of the first bevel gear 222 and the second bevel gear 223, and makes the top rod 23 not to move.

[0064] With reference to Figure 4 , Figure 5 The locking device 31 comprises a first rack 311, a second rack 312, a main gear 313 and a fixed block 314, two horizontal grooves 113 are formed in the base 11, and the two horizontal grooves 113 correspond to the first rack 311 and the second rack 312 respectively, the first rack 311 and the second rack 312 are both slidingly connected to the corresponding horizontal grooves 113 in the direction parallel to the axis of the rotating rod 224, the main gear 313 is rotatably connected to the base 11, the axis of the rotating shaft 211 is perpendicular to the axes of the rotating rod 224 and the first rod 254, and the first rack 311 and the second rack 312 are located on the two sides of the main gear 313 and are meshingly connected to the main gear 313. The fourth spring 33 is arranged on the second rack 312, and the two ends of the fourth spring 33 abut against the end face of the corresponding horizontal groove 113 close to the movable block 221 and the side face of the second rack 312 close to the movable block 221 respectively. The side wall of the movable block 221 is provided with a slot 2211 matched with the end of the first rack 311. When the cutting pump is not running and no external force is applied to the second rack 312, the end of the second rack 312 moves away from the movable block 221 to protrude out of the base 11, and the end of the first rack 311 close to the movable block 221 is embedded in the slot 2211, and at this time, the first bevel gear 222 is away from the second bevel gear 223.

[0065] With reference to Figure 9 , Figure 10, the second rack 312 is provided with an inclined surface 3111 at one end of the base 11, which affects the rotation direction of the cutting blade 151. A fixed block 314 is fixed on the cutting blade 151, and the inclined surface 3111 faces the fixed block 314 and follows the movement direction of the cutting blade 151. When the pump shaft 14 rotates, the fixed block 314 abuts against the inclined surface 3111 and drives the second rack 312 to move towards the fourth spring 33 side, so that the first rack 311 is disengaged from the slot 2211.

[0066] With reference to Figure 7 , Figure 10 When the pump shaft 14 rotates, the cutting blade 151 rotates around the pump shaft 14 to drive the fixed block 314 to move, and the fixed block 314 acts on the inclined surface 3111 to drive the second rack 312 to move towards the slot 2211 side, and then drives the first rack 311 to move away from the slot 2211 side through the main gear 313 to disengage from the slot 2211, at this time, the movable block 221 is unlocked, and the movable block 221 can move towards the first bevel gear 222 side under the action of the first spring 2251.

[0067] With reference to Figure 1 , Figure 11 The pump body 12 is provided with a bump protection device 4, which includes an inflating device 41 and an inflating bag 42. The inflating bag 42 is fixedly installed on the outer wall of the pump body 12 away from the water outlet 133. The inflating device 41 is used to inflate the inflating bag 42 when the pump body 12 is tilted. When the pump body 12 is tilted, the inflating bag 42 contacts the pool bottom first.

[0068] With reference to Figure 1 , Figure 11 The inflating device 41 includes a first counterweight 411, two second counterweights 412 and two fifth springs 413. The pump body 12 is provided with an annular groove 123 which is not communicated with the outside and surrounds the motor 121. The first counterweight 411 is fixed in the annular groove 123 and is close to the side of the pump body 12 away from the water outlet 133. The first counterweight 411 is opposite to the inflating bag 42. The second counterweight 412 is slidingly connected in the annular groove 123 along the circumferential direction of the annular groove 123, and the two second counterweights 412 are respectively located on the two sides of the annular groove 123. The two fifth springs 413 correspond to the two second counterweights 412 respectively, and the two ends of the fifth spring 413 are fixed on the side surfaces opposite to the corresponding first counterweight 411 and the corresponding second counterweight 412 respectively.

[0069] With reference to Figure 1 , Figure 11The portion of the annular groove 123 located between the two first counterweights 411 forms a closed compression chamber 124. There is only one compression chamber 124, and the second counterweight 412 is located inside the compression chamber 124. A connecting channel 43 is formed on both the second counterweight 412 and the pump body 12. The two ends of the connecting channel 43 are connected to the compression chamber 124 and the air bladder 42, respectively. The end of the connecting channel 43 that connects to the compression chamber 124 branches into two channels, each facing one of the two second counterweights 412.

[0070] Reference Figure 1 , Figure 11 By using the inflation device 41 to inflate the air bag 42 when the pump body 12 is tilted, the air bag 42 acts as a buffer when the pump body 12 comes into contact with the bottom of the pool or impurities, thus protecting the entire cutting pump.

[0071] Reference Figure 3 , Figure 11 When the push rod 23 extends and drives the pump body 12 to tilt, both second counterweights 412 move toward the side of the first counterweight 411, the volume of the compression chamber 124 decreases, and the gas in the compression chamber 124 enters the inflation bladder 42 through the connecting channel 43 to inflate the inflation bladder 42. At the same time, the movement of the two second counterweights 412 also changes the center of gravity of the pump body 12, helping the pump body 12 to tilt. When the pump body 12 is placed vertically, the second counterweights 412 move toward the side away from the first counterweight 411 under the action of the corresponding fifth spring 413. The gas in the inflation bladder 42 returns to the compression chamber 124, the inflation bladder 42 no longer inflates, and at the same time, the counterweights move to the corresponding positions to balance the center of gravity of the pump body 12.

[0072] The implementation principle of a cutting pump according to an embodiment of this application is as follows: When the pump is placed vertically, the tightly packed sediment at the bottom of the pool may block the inlet 132. At this time, the detection device 21 can detect whether the inlet 132 is blocked. If it is not blocked, the cutting pump operates normally. If the inlet 132 is blocked, the drive component 22 drives the push rod 23 to move out of the base 11. During the process of the bottom end of the push rod 23 extending out of the base 11, the push rod 23 and a corner of the base 11 together tilt and support the volute 13 and the pump body 12 at the bottom of the pool. At this time, the cutting pump is tilted, and the orientation of the inlet 132 is also changed with the tilt of the cutting pump. The cutting space under the base 11 will become larger, and the sediment can be better stirred, thereby restoring the operation of the cutting pump and improving the blockage of the cutting pump inlet 132 by the sediment at the bottom of the pool.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cutting pump, comprising a base (11), a motor (121), a pump shaft (14), an impeller (141), a fixed cutter disc (15), a cutting blade (151), a pump body (12) with a chamber (122), and a volute (13) with an inner cavity (131). The volute (13) has an inlet (132) and an outlet (133). The volute (13) is fixed to the bottom end of the pump body (12), and the base (11) is fixed to the bottom end of the volute (13). The base (11) supports the volute (13) and the pump body (12) at the bottom of a pool. The chamber (122) is sealed, and the motor (121) is fixed in the chamber (122). Inside, the output shaft of the motor (121) is coaxially fixed on the pump shaft (14). The bottom end of the pump shaft (14) extends into the inner cavity (131) of the volute (13) and is coaxially fixedly connected to the impeller (141). The fixed cutter disc (15) is located at the water inlet (132) of the volute (13) and on the side of the impeller (141) away from the motor (121). The fixed cutter disc (15) has several water passage holes (152). The end of the pump shaft (14) away from the motor (121) passes through the fixed cutter disc (15) and is connected to the cutting blade (151). The cutting blade (151) rotates to cooperate with the hole wall of the water passage hole (152) to achieve cutting. The feature is: It also includes an auxiliary tilting device (2), which includes a detection device (21), a drive component (22) and a top rod (23). The top rod (23) is threadedly connected to the base (11). The drive component (22) drives the top rod (23) to rotate on the base (11). The detection device (21) is used to detect whether the inlet (132) is blocked. When the detection device (21) detects that the inlet (132) is blocked, the drive component (22) drives the bottom end of the top rod (23) to move out of the base (11). The top rod (23) and a corner of the base (11) together tilt and support the volute (13) and the pump body (12) on the bottom of the pool or the top rod (23) pushes the pump body (12) into a completely tilted state. The driving component 1 (22) includes a linkage component (24), a movable block (221), a first bevel gear (222), a second bevel gear (223), a rotating rod (224), a first spring (2251), and a pushing component (25). The movable block (221) is rotatably connected to the base (11). The top end of the push rod (23) is slidably connected to the movable block (221) along a direction parallel to the movement of the push rod (23). The movable block (221) is slidably connected to the base (11) along a direction parallel to the sliding of the push rod (23). The axial direction of the movable block (221) is parallel to the sliding direction of the push rod (23). The movable block (221) is rotatably connected to the base (11) along the axial direction. The rotating rod (224) is rotatably connected to the base (11) along the rotation axis perpendicular to the movable block (221). The first bevel gear (222) is coaxially fixedly connected to the rotating rod (224), and the second bevel gear (223) is coaxially fixedly connected to the top of the movable block (221). The second bevel gear (223) is located below the first bevel gear (222) and is used to mesh with the first bevel gear (222). The pump shaft (14) drives the rotating rod (224) to rotate through the linkage (24). The first spring (2251) is set on the movable block (221) and drives the movable block (221) to always move toward the side of the first bevel gear (222). When the detection device (21) detects that the water inlet (132) is normally entering the water, the pusher (25) is used to push the movable block (221) to move away from the first bevel gear (222) until the second bevel gear (223) does not mesh with the first bevel gear (222). When the detection device (21) detects that the water inlet (132) is blocked, the pusher (25) does not act on the movable block (221).

2. A cutting pump according to claim 1, characterized in that: The linkage (24) includes a third bevel gear (241), a fourth bevel gear (242), a first shaft (243), and a transmission belt (244). The first shaft (243) is rotatably connected to the fixed cutter disc (15) along an axis parallel to the pump shaft (14). The transmission belt (244) is wound around the first shaft (243) and the pump shaft (14). The axis of the rotating rod (224) is perpendicular to the axis of the pump shaft (14). The third bevel gear (241) is coaxially fixedly connected to the first shaft (243). The fourth bevel gear (242) is coaxially fixedly connected to the rotating rod (224). The third bevel gear (241) is meshed with the fourth bevel gear (242).

3. A cutting pump according to claim 1, characterized in that: The pusher (25) includes a turntable (251), a push rod (252), a deformable ring (253), a plurality of first rods (254) and a plurality of second springs (255). The detection device (21) includes a rotating shaft (211) and a plurality of detection blades (212). The inner wall of the outlet (133) is provided with an inner groove (1331) for the movement of the detection blades (212). The rotating shaft (211) is rotatably connected to the inner groove (1331). The plurality of detection blades (212) are fixed on the rotating shaft (211) in the circumferential direction. The end of the detection blade (212) located on the side of the rotating shaft (211) near the outlet (133) is located at the water flow point of the outlet (133) and can be pushed by the water flow. The base (11) has a cylindrical groove (111). The end of the rotating shaft (211) extending out of the outlet (133) extends into the cylindrical groove (111). The turntable (251) is located in the cylindrical groove (111) and is coaxially fixedly connected to the rotating shaft (211). Multiple first grooves (2511) are sequentially formed along the circumferential direction on the outer wall of the turntable (251). The multiple first grooves (2511) correspond to multiple first rods (254). The first rods (254) extend along the depth of the first groove (2511). The first rod (254) is slidably connected in the first groove (2511) in the direction of degree. The ring sleeve (253) sleeves the turntable (251) inside. The end of the first rod (254) away from the bottom wall of the first groove (2511) is fixed on the inner wall of the ring sleeve (253). Multiple second springs (255) correspond to multiple first rods (254) respectively. The two ends of the second springs (255) are respectively set on the bottom wall of the corresponding first groove (2511) and on the corresponding first rod (254). The second springs (255) are always in a stretched state. The push rod (252) is slidably connected to the base (11) along the sliding direction parallel to the movable block (221). A third spring (256) is provided on the push rod (252) to drive the end of the push rod (252) to extend into the cylindrical groove (111) and abut against the outer wall of the ring (253). When the shaft (211) stops rotating or the rotation speed is significantly less than the normal operating speed of the cutting pump, the push rod (252) does not affect the second bevel gear (223) and the movable block (221). When the shaft (211) rotates normally, the push rod (252) always abuts against the second bevel gear (223) or the movable block (221) and drives the second bevel gear (223) to not mesh with the second bevel gear (223).

4. A cutting pump according to claim 3, characterized in that: It also includes a time difference control device (3), which includes a locking device (31) and a deceleration block (32). The locking device (31) is used to lock the position of the movable block (221) on the base (11). When the locking device (31) locks the movable block (221) on the base (11), the first bevel gear (222) moves away from the second bevel gear (223). The base (11) has a vertical groove (114) with its length direction parallel to the sliding direction of the movable block (221). The deceleration block (32) is slidably connected in the vertical groove (114) along the length direction of the vertical groove (114). The end of the vertical groove (114) near the first bevel gear (222) is gradually narrowed. The movable block (221) is rotatably connected to the deceleration block (32) and moves together with the deceleration block (32). When the pump shaft (14) starts to rotate, the locking device (31) unlocks the movable block (221). The deceleration block (32) is used to decelerate the movement of the movable block (221) before the second bevel gear (223) moves to engage with the first bevel gear (222). When the inlet (132) is normally filled with water, the push rod (252) drives the second bevel gear (223) away from the first bevel gear (222) before the first bevel gear (222) engages with the second bevel gear (223).

5. A cutting pump according to claim 4, characterized in that: The locking device (31) includes a first rack (311), a second rack (312), a main gear (313), and a fixing block (314). The first rack (311) and the second rack (312) are slidably connected to the base (11) along a sliding direction perpendicular to the movable block (221). The main gear (313) is rotatably connected to the base (11). The first rack (311) and the second rack (312) are located on both sides of the main gear (313) and are meshed with the main gear (313). The side wall of the movable block (221) is provided with a slot (2211) for matching the end of the first rack (311). The second rack (312) is provided with a fourth spring (33) to drive the second rack (312) to always face the far side. When the second rack (312) moves away from the slot (2211), the end of the second rack (312) away from the first rack (311) can extend out of the base (11). The end of the second rack (312) extending out of the base (11) is provided with an inclined surface (3111) facing the rotation direction of the cutting blade (151). The fixing block (314) is fixed on the cutting blade (151). When the end of the first rack (311) extends into the slot (2211), the first bevel gear (222) moves away from the second bevel gear (223). When the pump shaft (14) rotates, the fixing block (314) abuts against the inclined surface (3111) and drives the second rack (312) to move toward the slot (2211). The first rack (311) disengages from the slot (2211).

6. A cutting pump according to claim 1, characterized in that: It also includes a collision protection device (4), which includes an inflation device (41) and an air bladder (42). The air bladder (42) is installed on the outer wall of the pump body (12) away from the outlet (133). The inflation device (41) is used to inflate the air bladder (42) when the pump body (12) is tilted. When the pump body (12) is tilted, the air bladder (42) contacts the bottom of the pool before the pump body (12).

7. A cutting pump according to claim 6, characterized in that: The inflation device (41) includes a first counterweight (411), two second counterweights (412), and two fifth springs (413). The pump body (12) has an annular groove (123) coaxially formed. The first counterweight (411) is fixed in the annular groove (123) and close to the side of the pump body (12) away from the outlet (133). The second counterweights (412) are slidably connected in the annular groove (123) along the circumferential direction. The two second counterweights (412) are located on both sides of the annular groove (123). The two fifth springs (413) correspond to the two second counterweights (412), and their two ends are fixed to the first counterweight (411) and the corresponding second counterweight (412), respectively. The portion of the annular groove (123) between the two first counterweights (411) is a sealed compression chamber (124). The second counterweight (412) is located inside the compression chamber (124). A connecting channel (43) is formed on the second counterweight (412) and the pump body (12). The two ends of the connecting channel (43) are connected to the compression chamber (124) and the air bladder (42) respectively. When the pump body (12) is in a vertical state, the two second counterweights (412) are away from the first counterweights (411) and located on both sides of the pump body (12) axis. When the pump body (12) is tilted, the second counterweights (412) move toward the first counterweights (411), and the air bladder (42) is inflated.

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