Multi-stage anti-blocking sewage pump

Abstract

The invention relates to the technical field of sewage pumps, and particularly discloses a multistage anti-blocking sewage pump which comprises a pump body and a connecting pipe arranged at the bottom of the pump body, and is characterized in that the anti-blocking sewage pump further comprises an anti-blocking assembly arranged in the connecting pipe, and the anti-blocking assembly comprises an anti-blocking cover movably arranged in the connecting pipe; the hair blocking assembly further comprises a rotating cylinder arranged at the bottom of the inner side of the connecting pipe, a protruding strip and a rotating rod piece are arranged on the inner side of the rotating cylinder, the rotating cylinder is arranged in the middle of the interior of the connecting pipe, a blocking strip is arranged on the outer wall of the rotating rod piece, and when the rotating rod piece rotates, the blocking strip drives the protruding strip and the rotating cylinder to rotate. Through the cooperation of the structure, hair can be blocked by the hair blocking cover, the situation that the hair directly enters the first-stage rotating cutter to cause winding is reduced, the situation that the hair is wound around a blade or an impeller to cause blockage and shutdown is avoided, and the anti-blockage effect of the sewage pump is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage pumps, and more particularly to a multi-stage anti-blockage sewage pump. Background Art

[0002] With the continuous advancement of industrial development and the acceleration of the urbanization process, sewage treatment has become a major environmental challenge faced by modern cities. As the core equipment in the sewage disposal system, the operating efficiency of sewage pumps is directly related to the reliability of the entire treatment system. However, the current mainstream products have significant technical defects in terms of anti-blockage performance, resulting in easy blockage of sewage pumps during operation, thereby affecting their normal use effect.

[0003] To solve this problem, a "multi-stage anti-blockage sewage pump" with the publication number "CN119467346A" drives the connecting shaft to rotate synchronously through the rotation of the impeller, thereby driving the scraper to scrape the top of the filter plate, reducing the risk of sewage pump blockage caused by impurities blocking the filter plate during the crushing process of the cross knife group. At the same time, the coordinated action between the cross knife group, the support frame body, and the crushing knife is utilized to achieve the multi-stage crushing function. However, in actual domestic sewage garbage, there are still a lot of hairs. Hairs have high elasticity and tensile strength, and it is difficult to completely break them by ordinary mechanical cutting or stirring. Moreover, hairs are easy to entangle the cutting blades or impellers, increasing the motor load, resulting in blocked rotation or overload shutdown, and the anti-blockage effect is not good. The above solution is inconvenient for treating the hairs in sewage, thus affecting the anti-blockage effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-stage anti-blockage sewage pump, which can prevent hair from directly entering the first-stage rotating knife and reduce the entanglement caused by hair, thus avoiding the situation of hair entanglement with the blades or impellers resulting in blocked rotation and shutdown, improving the anti-blockage effect of the sewage pump, and solving the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A multi-stage anti-blockage sewage pump includes a pump body, and a connecting pipe is configured at the bottom of the pump body. It is characterized in that the anti-blockage sewage pump further includes: A hair-blocking component, configured inside the connecting pipe. The hair-blocking component includes a hair-blocking cover that moves inside the connecting pipe, and the hair-blocking cover is used to block the hairs in the sewage. The hair-blocking component further includes a rotating cylinder configured at the inner bottom of the connecting pipe, and convex strips are configured inside the rotating cylinder; A rotating rod member, configured in the middle part inside the connecting pipe. A blocking strip is configured on the outer wall of the rotating rod member. When the rotating rod member rotates, the blocking strip drives the convex strips and the rotating cylinder to rotate. A first-stage rotating knife is configured outside the rotating rod member; The hair cutting assembly is configured inside the connecting pipe. The hair cutting assembly is used to move the hair blocking cover up and down to cut the hair blocked by the hair blocking cover. The hair cutting assembly includes a cutting knife configured on the inner wall of the connecting pipe. The hair cutting assembly further includes a lifting cover configured on the inner wall of the connecting pipe. A fixing rod is arranged inside the lifting cover, and the bottom of the fixing rod is fixedly connected to the top of the hair blocking cover.

[0006] Preferably, the hair cutting assembly further includes: The mounting cover is fixedly connected to the inner wall of the connecting pipe and is located above the lifting cover. An electric telescopic rod is fixedly installed inside the mounting cover, and the output shaft of the electric telescopic rod passes through the bottom of the mounting cover and is located above the lifting cover; The sleeve shaft is fixedly connected to the inner top of the lifting cover. A through frame is slidably connected inside the sleeve shaft, and a spring is fixedly connected between the through frame and the sleeve shaft.

[0007] Preferably, ball beads for reducing friction are rotatably connected to the bottom of the output shaft of the electric telescopic rod and the bottom of the through frame.

[0008] Preferably, the anti-blocking sewage pump further includes: The rotating assembly is configured inside the lifting cover. The rotating assembly is used to make the hair blocking cover rotate when the hair blocking cover moves up and down. The rotating assembly includes a top ring and a bottom ring fixedly connected to the inner wall of the connecting pipe and located inside the lifting cover. The top ring is located above the bottom ring. Sliding grooves are formed at the bottom of the top ring and the top of the bottom ring. The rotating assembly further includes a moving shaft rotatably connected to the outer wall of the fixing rod at the position corresponding to the sliding groove. The sliding grooves on the top ring and the bottom ring are arranged in a staggered manner.

[0009] Preferably, rubber strips for blocking impurities are fixedly connected to both the top and bottom of the lifting cover near the inner wall of the connecting pipe, and the bottom of the hair blocking cover is inclined.

[0010] Preferably, the cutting knife is slidably connected to the inner wall of the connecting pipe, and magnetic blocks are fixedly connected to the position of the connecting pipe near the cutting knife and the position where the cutting knife slides on the connecting pipe.

[0011] Preferably, an access ring is fixedly connected to the inside of the hair blocking cover. The rotating rod member includes a main rod. A lifting rod is slidably connected to the bottom of the main rod. The primary rotating knife is fixed to the outer wall of the lifting rod. The primary rotating knife is located inside the access ring. A connecting rod is fixedly connected to the inside of the lifting cover. The side of the connecting rod away from the lifting cover is rotatably connected to the lifting rod. An O-ring for sealing is installed at the inner top of the lifting rod.

[0012] Preferably, an L-shaped frame is fixedly connected to the inner wall of the connecting pipe above the lifting cover. A secondary blocking cover is fixedly connected to the bottom of the L-shaped frame. A secondary rotating knife is fixedly connected to the top of the outer wall of the lifting rod. There is a gap between the inner side of the secondary blocking cover and the outer wall of the main rod, and there is a gap between the outer side of the secondary blocking cover and the inner side of the lifting cover.

[0013] Preferably, the anti-clogging sewage pump further includes: A pressing assembly disposed below the secondary blocking cover. The pressing assembly includes a fixing ring fixedly connected to the inner wall of the lifting cover. A blocking plate is fixedly connected to the inner side of the fixing ring, and there is a gap between adjacent blocking plates.

[0014] Preferably, a scraping plate is fixedly connected to the outer wall of the main rod below the secondary blocking cover, and the top of the scraping plate is in contact with the bottom of the secondary blocking cover.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the action of the hair blocking assembly, the hair is blocked by the hair blocking cover, reducing the situation where the hair directly enters the first-stage rotating knife and causes entanglement, thereby facilitating the avoidance of the situation where the hair entangles the blade or the impeller and causes clogging and shutdown, so as to improve the anti-clogging effect of the sewage pump; 2. Through the action of the hair cutting assembly, the hair can be cut off. After the hair is cut off, it can be discharged from the leakage holes of the hair blocking cover, thus avoiding the situation where the light hair accumulates and causes the sewage pump to be blocked, thereby further improving the anti-clogging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is the overall structure view of the present invention; Figure 2 It is the semi-sectional structure schematic diagram of the present invention; Figure 3 It is the semi-sectional structure schematic diagram of the connecting pipe of the present invention; Figure 4 It is the partial structure schematic diagram of the top ring of the present invention; Figure 5 It is the semi-sectional structure schematic diagram of the top ring of the present invention; Figure 6 It is the side view structure schematic diagram of the top ring of the present invention; Figure 7 It is the partial side-sectional structure schematic diagram of the connecting pipe of the present invention; Figure 8 It is the side-sectional structure schematic diagram of the sleeve shaft of the present invention; Figure 9 It is the semi-sectional structure schematic diagram of the lifting cover of the present invention; Figure 10 Schematic diagram of the partial sectional structure of the rotating cylinder of the present invention; Figure 11 For the present invention Figure 10 Enlarged view of part A; Figure 12 Schematic diagram of the half-sectional structure of the rotating rod of the present invention; Figure 13 Schematic diagram of the bottom view structure of the fixed ring of the present invention.

[0018] Explanation of reference numerals in the drawings: 1. Pump body; 2. Connecting pipe; 3. Hair-blocking component; 31. Hair-blocking cover; 32. Rotating cylinder; 33. Rib; 4. Hair-cutting component; 41. Cutting knife; 42. Lifting cover; 43. Fixed rod; 44. Mounting cover; 45. Electric telescopic rod; 46. Sleeve shaft; 47. Through-frame; 48. Ball; 49. Rubber strip; 410. Spring; 5. Rotating component; 51. Top ring; 52. Bottom ring; 53. Sliding groove; 54. Moving shaft; 6. Pressing component; 61. Fixed ring; 62. Blocking plate; 7. Scraping plate; 8. Connecting rod; 9. Rotating rod; 91. Main rod; 92. Lifting rod; 10. Passing-in ring; 11. Blocking strip; 12. Magnet; 13. O-ring; 14. L-shaped frame; 15. Secondary blocking cover; 16. Secondary rotating knife; 17. Primary rotating knife. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1: Please refer to Figures 1 to 11, the present invention provides a technical solution: a multi-stage anti-clogging sewage pump, including a pump body 1, a connecting pipe 2 is fixedly inserted at the bottom of the pump body 1. The anti-clogging sewage pump further includes a hair-blocking assembly 3 disposed inside the connecting pipe 2. The hair-blocking assembly 3 includes a hair-blocking cover 31 that moves inside the connecting pipe 2, and the hair-blocking cover 31 is used to block the hair in the sewage. The hair-blocking assembly 3 further includes a rotating cylinder 32 that rotates at the inner bottom of the connecting pipe 2, and a convex strip 33 is fixed inside the rotating cylinder 32. The anti-clogging sewage pump further includes a rotating rod 9 disposed in the middle part inside the connecting pipe 2, and a blocking strip 11 is disposed on the outer wall of the rotating rod 9. When the rotating rod 9 rotates, the blocking strip 11 drives the convex strip 33 and the rotating cylinder 32 to rotate. An upper-stage rotating knife 17 is disposed outside the rotating rod 9. The pump body 1 is a mature prior art, and the motor drives the impeller to rotate inside the volute to realize the transportation of sewage. Moreover, the top of the rotating rod 9 is connected to the middle position of the bottom of the impeller, so that the rotating rod 9 rotates when the sewage pump operates.

[0021] By adopting the above technical solution, during use, the motor of the pump body 1 drives the impeller to rotate, so that sewage enters from the top of the connecting pipe 2 and is discharged from the drain pipe near the volute, realizing the transportation of sewage. While the sewage is being transported, the impeller drives the rotating rod 9 to rotate, which can make the upper-stage rotating knife 17 rotate, thereby realizing the crushing of large-particle impurities in the sewage to reduce the situation of the pump body 1 being blocked by garbage.

[0022] In order to reduce the situation of hair in the sewage winding around the blade or the impeller, the hair-blocking assembly 3 is provided in this solution. While the rotating rod 9 rotates, it can drive the rotating cylinder 32 to rotate. When the rotating cylinder 32 drives the convex strip 33 to rotate, it can make the sewage passing through this place rotate to a certain extent. Under the action of the rotational centrifugal force, the light hair strands can be thrown to the surroundings, so that the hair strands are blocked by the hair-blocking cover 31, reducing the situation of the hair directly entering the upper-stage rotating knife 17 and causing entanglement, thus facilitating the avoidance of the situation of the hair strands winding around the blade or the impeller and causing clogging and shutdown, so as to improve the anti-clogging effect of the sewage pump.

[0023] The anti-clogging sewage pump further includes a hair cutting assembly 4 disposed inside the connecting pipe 2. The hair cutting assembly 4 is used to move the hair blocking cover 31 up and down to cut the hair blocked by the hair blocking cover 31. The hair cutting assembly 4 includes a cutting knife 41 sliding on the inner wall of the connecting pipe 2. The hair cutting assembly 4 further includes a lifting cover 42 moving on the inner wall of the connecting pipe 2. A fixing rod 43 is disposed inside the lifting cover 42. The bottom of the fixing rod 43 is fixedly connected to the top of the hair blocking cover 31. The hair cutting assembly 4 further includes a mounting cover 44 fixedly connected to the inner wall of the connecting pipe 2 and located above the lifting cover 42. An electric telescopic rod 45 is fixedly installed inside the mounting cover 44. The output shaft of the electric telescopic rod 45 passes through the bottom of the mounting cover 44 and is located above the lifting cover 42. The hair cutting assembly 4 further includes a sleeve shaft 46 fixedly connected to the inner top of the lifting cover 42. A through frame 47 is slidably connected inside the sleeve shaft 46. A spring 410 is fixedly connected between the through frame 47 and the sleeve shaft 46. Ball beads 48 for reducing friction are rotatably connected to the bottom of the output shaft of the electric telescopic rod 45 and the bottom of the through frame 47 respectively.

[0024] By adopting the above technical solution, the mounting cover 44 functions to waterproof the electric telescopic rod 45. A sealing ring can be installed at the position of the mounting cover 44 close to the output shaft of the electric telescopic rod 45 to achieve the sealing effect. While the pump body 1 is running, when the output shaft of the electric telescopic rod 45 extends, the lifting cover 42 can be squeezed to move downward. During this process, the spring 410 is compressed. The lifting cover 42 drives the fixing rod 43 and the hair blocking cover 31 to move downward. During this process, the hair blocking cover 31 drives the blocked hair and part of the impurities to move downward and contact the cutting knife 41 below, realizing the cutting of the hair. After the hair is cut, it can be discharged from the leakage holes of the hair blocking cover 31, thus avoiding the situation of light hair accumulation causing the sewage pump to be blocked, and further improving the anti-clogging effect.

[0025] When the output shaft of the electric telescopic rod 45 contracts, under the elastic force of the spring 410, the spring 410 gradually elongates, and relative sliding occurs between the sleeve shaft 46 and the through frame 47, so that the sleeve shaft 46 drives the lifting cover 42, the fixing rod 43 and the hair blocking cover 31 to move upward and reset, facilitating the next cutting when the output shaft of the electric telescopic rod 45 extends.

[0026] It should be noted that the cutting knife 41 is set to be relatively thin, and there is a large distance between adjacent cutting knives 41, so that the cutting knife 41 will not block the hair.

[0027] The anti-clogging sewage pump further includes a rotating assembly 5 disposed inside the lifting cover 42. The rotating assembly 5 is used to make the hair-blocking cover 31 rotate when the hair-blocking cover 31 moves up and down. The rotating assembly 5 includes a top ring 51 and a bottom ring 52 fixedly connected to the inner wall of the connecting pipe 2 and located inside the lifting cover 42. The top ring 51 is above the bottom ring 52. Sliding grooves 53 are formed at the bottom of the top ring 51 and the top of the bottom ring 52. The rotating assembly 5 further includes a moving shaft 54 rotatably connected to the outer wall of the fixed rod 43 at a position corresponding to the sliding groove 53. The sliding groove 53 on the top ring 51 and the sliding groove 53 on the bottom ring 52 are arranged in a staggered manner, and both sides of the sliding groove 53 are in an asymmetric state.

[0028] By adopting the above technical solution, when the lifting cover 42, the fixed rod 43 and the hair-blocking cover 31 move up and down, the moving shaft 54 moves up and down accordingly. When the moving shaft 54 moves downward, the moving shaft 54 will contact the side hypotenuse of the bottom ring 52 and move downward. During this process, the moving shaft 54 will be rotationally deflected under the limitation of the bottom ring 52. When the moving shaft 54 moves upward, the moving shaft 54 moves upward along the side hypotenuse of the top ring 51. At this time, the moving shaft 54 continues to be rotationally deflected under the limitation of the top ring 51. Repeating this process, the hair-blocking cover 31 is made to rotate with the hair, so that the cutting knife 41 cuts the hair at different positions, thereby improving the cutting effect on the hair, ensuring that the cut hair is smaller, enabling the hair to pass through the sewage pump smoothly, and further improving the anti-clogging effect.

[0029] Due to the flow of water when the sewage pump starts, the hair will stick tightly to the hair-blocking cover 31, and when the hair-blocking cover 31 rotates, it can smoothly rotate the hair at that place.

[0030] The lengths and angles of the hypotenuses on both sides of the sliding groove 53 are different.

[0031] Rubber strips 49 for blocking impurities are fixedly connected to both the top and bottom parts of the lifting cover 42 near the inner wall of the connecting pipe 2, and the bottom of the hair-blocking cover 31 is inclined.

[0032] By adopting the above technical solution, under the action of the rubber strips 49, a certain sealing effect can be achieved, reducing the possibility of solid waste entering the inside of the lifting cover 42. The inclined setting of the bottom of the hair-blocking cover 31 enables the solid impurities blocked by the lifting cover 42 to enter the inside of the through-ring 10 under the action of water flow. The up-and-down movement of the hair-blocking cover 31 further facilitates the entry of impurities into the inside of the through-ring 10.

[0033] The cutting knife 41 is slidably connected to the inner wall of the connecting pipe 2, and magnetic blocks 12 are fixedly connected to both the position of the connecting pipe 2 near the cutting knife 41 and the position where the cutting knife 41 slides on the connecting pipe 2.

[0034] By adopting the above technical solution, the magnetic poles on the sides of the two magnetic blocks 12 close to each other are different. During cutting, when the blocking cover 31 moves downward, the cutting knife 41 is extruded and limited to move downward against the magnetic force of the magnetic blocks 12. After cutting is completed, the blocking cover 31 moves upward, and the cutting knife 41 is reset under the action of the magnetic force.

[0035] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that: as Figures 3 to 13 , an access ring 10 is fixedly connected to the inner side of the blocking cover 31. The rotating rod 9 includes a main rod 91. A lifting rod 92 is slidably connected to the bottom of the main rod 91. The primary rotary cutter 17 is fixed to the outer wall of the lifting rod 92. The primary rotary cutter 17 is located inside the access ring 10. A connecting rod 8 is fixedly connected to the inner side of the lifting cover 42. One side of the connecting rod 8 away from the lifting cover 42 is rotatably connected to the lifting rod 92. An O-ring 13 for sealing is installed at the top inside the lifting rod 92. The primary rotary cutter 17 is fixed to the outer wall of the lifting rod 92.

[0036] By adopting the above technical solution, the bottom of the access ring 10 is close to the inner bottom of the blocking cover 31. When the impeller drives the main rod 91 to rotate, the lifting rod 92 rotates accordingly. Under the action of the O-ring 13, while not affecting the relative movement between the lifting rod 92 and the main rod 91, the sealing performance inside the lifting rod 92 is ensured.

[0037] The connecting rod 8 and the lifting rod 92 can be rotatably connected by using a sealed bearing. This technology is a mature existing technology and will not be elaborated too much. When the blocking cover 31 drives the access ring 10 to move up and down, the primary rotary cutter 17 moves up and down with the lifting rod 92 and the connecting rod 8, so that the primary rotary cutter 17 is always located at the inner bottom position of the access ring 10 to ensure the cutting effect on larger solid materials.

[0038] An L-shaped frame 14 is fixedly connected to the inner wall of the connecting pipe 2 above the lifting cover 42. A secondary blocking cover 15 is fixedly connected to the bottom of the L-shaped frame 14. A secondary rotary cutter 16 is fixedly connected to the top outer wall of the lifting rod 92. There is a gap between the inner side of the secondary blocking cover 15 and the outer wall of the main rod 91, and there is a gap between the outer side of the secondary blocking cover 15 and the inner side of the lifting cover 42. The anti-clogging sewage pump further includes a pressing component 6 arranged below the secondary blocking cover 15. The pressing component 6 includes a fixed ring 61 fixedly connected to the inner wall of the lifting cover 42. A blocking plate 62 is fixedly connected to the inner side of the fixed ring 61. There is a gap between adjacent blocking plates 62, and the bottom of the blocking plate 62 is inclined to facilitate the passage of solid impurities.

[0039] By adopting the above technical solution, under the fixing action of the L-shaped frame 14, the secondary blocking cover 15 remains fixed without movement. The secondary blocking cover 15 is provided with filter holes to filter out larger impurities after cutting, preventing large impurities from entering the pump body 1 and causing blockage. The secondary rotary knife 16 rotates with the main rod 91 to break up the large particles of impurities being blocked. And through the cooperation of structures such as the secondary blocking cover 15, the hair blocking cover 31, the secondary rotary knife 16, and the primary rotary knife 17 in this solution, the effect of multi-stage anti-blockage is achieved, making the anti-blockage effect of the pump body 1 good.

[0040] When the lifting rod 92 moves up and down with the connecting rod 8, while the lifting rod 92 rotates, it drives the secondary rotary knife 16 to move up and down, realizing the cutting and breaking of large particle impurities blocked at different positions of the secondary blocking cover 15.

[0041] And when the lifting rod 92 moves upward with the connecting rod 8, the fixing ring 61 and the blocking plate 62 move upward. The blocking plate 62 plays a certain role in squeezing and limiting the solid impurities above it. The solid impurities after squeezing and limiting are more easily cut and crushed, so as to improve the effect of impurity breaking.

[0042] It should be noted that since the fixing ring 61 is fixed to the lifting cover 42, the fixing ring 61 and the blocking plate 62 will deflect at an angle with the lifting cover 42, realizing the squeezing and limiting of impurities by the blocking plate 62 from different positions, and further improving the effect of impurity breaking.

[0043] A scraping plate 7 is fixedly connected to the outer wall of the main rod 91 below the secondary blocking cover 15, and the top of the scraping plate 7 is attached to the bottom of the secondary blocking cover 15.

[0044] By adopting the above technical solution, when the main rod 91 rotates with the impeller, the scraping plate 7 rotates accordingly, scraping the bottom of the secondary blocking cover 15, reducing the situation of impurity accumulation on the secondary blocking cover 15, thereby improving the anti-blockage effect.

[0045] Working principle: The motor of the pump body 1 drives the impeller to rotate, realizing the entry of sewage from the top of the connecting pipe 2 and the discharge of sewage from the drain pipe near the volute, realizing the transportation of sewage. While transporting sewage, the impeller drives the rotating rod member 9 to rotate, which can make the primary rotary knife 17 rotate, thereby realizing the breaking of large particle impurities in the sewage to reduce the situation of garbage blocking the pump body 1.

[0046] In order to reduce the situation where hair in the sewage entangles the blades or impellers, a hair blocking component 3 is provided in this solution. While the rotating rod 9 rotates, it can drive the rotating cylinder 32 to rotate. When the rotating cylinder 32 drives the convex strips 33 to rotate, it can cause the sewage passing through this place to rotate to a certain extent. Under the action of the rotational centrifugal force, the light hair strands can be thrown to the surroundings, and the hair strands are blocked by the hair blocking cover 31, reducing the situation where hair directly enters the first-stage rotating knife 17 and causes entanglement, thereby facilitating the avoidance of the situation where the hair strands entangle the blades or impellers and cause blockage and shutdown, so as to improve the anti-blocking effect of the sewage pump.

[0047] The installation cover 44 plays a role in waterproofing the electric telescopic rod 45. A sealing ring can be installed at the position of the installation cover 44 close to the output shaft of the electric telescopic rod 45 to achieve the sealing effect. While the pump body 1 is running, when the output shaft of the electric telescopic rod 45 extends, the lifting cover 42 can be squeezed and move downward. During this process, the spring 410 is compressed, and the lifting cover 42 drives the fixed rod 43 and the hair blocking cover 31 to move downward. During this process, the hair blocking cover 31 drives the blocked hair strands and some impurities to move downward and contact the cutting knife 41 below to cut the hair strands. After the hair strands are cut, they can be discharged from the leakage holes of the hair blocking cover 31. When the moving shaft 54 moves downward, the moving shaft 54 will contact the side hypotenuse of the bottom ring 52 and move downward. During this process, the moving shaft 54 will be rotationally deflected under the limit of the bottom ring 52. When the moving shaft 54 moves upward, the moving shaft 54 moves upward along the side hypotenuse of the top ring 51. At this time, the moving shaft 54 continues to be rotationally deflected under the limit of the top ring 51. Repeating like this, the hair blocking cover 31 drives the hair to rotate, so as to realize that the cutting knife 41 cuts the hair at different positions, thereby improving the cutting effect on the hair, ensuring that the cut hair is smaller, enabling the hair to pass through the sewage pump smoothly, and further improving the anti-blocking effect.

[0048] Under the fixing action of the L-shaped frame 14, the secondary blocking cover 15 remains fixed and does not move. The secondary blocking cover 15 is provided with filter holes to filter out the still relatively large impurities after cutting, preventing large impurities from entering the pump body 1 and causing blockage. The secondary rotating knife 16 rotates with the main rod 91 to break the large particles of impurities that are blocked. When the lifting rod 92 moves upward with the connecting rod 8, the fixing ring 61 and the blocking plate 62 move upward. The blocking plate 62 plays a certain role in squeezing and limiting the solid impurities above it. The solid impurities after being squeezed and limited are more easily cut and crushed, so as to improve the impurity crushing effect. Since the fixing ring 61 is fixed to the lifting cover 42, the fixing ring 61 and the blocking plate 62 will deflect at an angle with the lifting cover 42, realizing that the blocking plate 62 squeezes and limits the impurities from different positions, and further improving the impurity crushing effect.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage anti-blockage sewage pump, comprising a pump body (1), and a connecting pipe (2) is configured at the bottom of the pump body (1), characterized in that, The anti-clogging sewage pump further includes: A hair-blocking component (3) disposed inside the connecting pipe (2). The hair-blocking component (3) includes a hair-blocking cover (31) that moves inside the connecting pipe (2). The hair-blocking cover (31) is used to block the hair in the sewage. The hair-blocking component (3) further includes a rotating cylinder (32) disposed at the inner bottom of the connecting pipe (2), and convex strips (33) are disposed inside the rotating cylinder (32); A rotating rod member (9) disposed in the middle part inside the connecting pipe (2). A blocking strip (11) is disposed on the outer wall of the rotating rod member (9). When the rotating rod member (9) rotates, the blocking strip (11) drives the convex strip (33) and the rotating cylinder (32) to rotate. A primary rotating knife (17) is disposed outside the rotating rod member (9); A hair-cutting component (4) disposed inside the connecting pipe (2). The hair-cutting component (4) is used to move the hair-blocking cover (31) up and down to shred the hair blocked by the hair-blocking cover (31). The hair-cutting component (4) includes a cutting knife (41) disposed on the inner wall of the connecting pipe (2). The hair-cutting component (4) further includes a lifting cover (42) disposed on the inner wall of the connecting pipe (2). A fixed rod (43) is disposed inside the lifting cover (42), and the bottom of the fixed rod (43) is fixedly connected to the top of the hair-blocking cover (31).

2. The multi-stage anti-clogging sewage pump according to claim 1, wherein: The hair-cutting component (4) further includes: An installation cover (44) fixedly connected to the inner wall of the connecting pipe (2) and located above the lifting cover (42). An electric telescopic rod (45) is fixedly installed inside the installation cover (44). The output shaft of the electric telescopic rod (45) passes through the bottom of the installation cover (44) and is located above the lifting cover (42); A sleeve shaft (46) fixedly connected to the inner top of the lifting cover (42). A through-frame (47) is slidably connected inside the sleeve shaft (46), and a spring (410) is fixedly connected between the through-frame (47) and the sleeve shaft (46).

3. The multi-stage anti-blocking sewage pump according to claim 2, characterized in that: A ball (48) for reducing friction is rotatably connected to the bottom of the output shaft of the electric telescopic rod (45) and the bottom of the through-frame (47).

4. A multi-stage anti-clogging sewage pump according to claim 1, characterized in that, The anti-clogging sewage pump further includes: A rotating component (5) disposed inside the lifting cover (42). The rotating component (5) is used to make the hair-blocking cover (31) rotate when the hair-blocking cover (31) moves up and down. The rotating component (5) includes a top ring (51) and a bottom ring (52) fixedly connected to the inner wall of the connecting pipe (2) and located inside the lifting cover (42). The top ring (51) is located above the bottom ring (52). Sliding grooves (53) are formed at the bottom of the top ring (51) and the top of the bottom ring (52). The rotating component (5) further includes a moving shaft (54) rotatably connected to the outer wall of the fixed rod (43) corresponding to the position of the sliding groove (53). The sliding groove (53) on the top ring (51) and the sliding groove (53) on the bottom ring (52) are arranged in a staggered manner.

5. The multi-stage anti-clogging sewage pump according to claim 1, characterized in that: Rubber strips (49) for blocking impurities are fixedly connected to both the top and bottom of the lifting cover (42) near the inner wall of the connecting pipe (2), and the bottom of the hair-blocking cover (31) is inclined.

6. The multi-stage anti-clogging sewage pump according to claim 1, wherein: The cutting knife (41) is slidably connected to the inner wall of the connecting pipe (2). Magnetic blocks (12) are fixedly connected to the position of the connecting pipe (2) close to the cutting knife (41) and the position where the cutting knife (41) slides on the connecting pipe (2).

7. The multi-stage anti-clogging sewage pump according to claim 1, characterized in that: An access ring (10) is fixedly connected to the inner side of the hair blocking cover (31). The rotating rod member (9) includes a main rod (91). A lifting rod (92) is slidably connected to the bottom of the main rod (91). The primary rotating knife (17) is fixed to the outer wall of the lifting rod (92). The primary rotating knife (17) is located inside the access ring (10). A connecting rod (8) is fixedly connected to the inner side of the lifting cover (42). One side of the connecting rod (8) away from the lifting cover (42) is rotatably connected to the lifting rod (92). An O-ring (13) for sealing is installed at the top inside the lifting rod (92).

8. The multi-stage anti-clogging sewage pump according to claim 1, wherein: An L-shaped frame (14) is fixedly connected to the inner wall of the connecting pipe (2) above the lifting cover (42). A secondary blocking cover (15) is fixedly connected to the bottom of the L-shaped frame (14). A secondary rotating knife (16) is fixedly connected to the top of the outer wall of the lifting rod (92). There is a gap between the inner side of the secondary blocking cover (15) and the outer wall of the main rod (91). There is a gap between the outer side of the secondary blocking cover (15) and the inner side of the lifting cover (42).

9. The multi-stage anti-clogging sewage pump according to claim 1, wherein, The anti-clogging sewage pump further includes: A pressing assembly (6), arranged below the secondary blocking cover (15). The pressing assembly (6) includes a fixed ring (61) fixedly connected to the inner wall of the lifting cover (42). A blocking plate (62) is fixedly connected to the inner side of the fixed ring (61). There is a gap between adjacent blocking plates (62).

10. A multi-stage anti-clogging sewage pump according to claim 1, characterized in that: A scraping plate (7) is fixedly connected to the outer wall of the main rod (91) below the secondary blocking cover (15). The top of the scraping plate (7) is in contact with the bottom of the secondary blocking cover (15).

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