Anti-clogging centrifugal pump

Abstract

The utility model relates to centrifugal pump technical field especially relates to a kind of anti-blocking centrifugal pump, including organism, connecting shaft, flow guide frame, water outlet pipe, first anti-blocking component, second anti-blocking component, water inlet component and support component, the inside of organism is provided with connecting shaft, the side of organism is provided with flow guide frame, the side of flow guide frame is provided with water outlet pipe, the inside of flow guide frame is provided with first anti-blocking component, the inside of flow guide frame is provided with second anti-blocking component, the side of flow guide frame is provided with water inlet component, the below of organism is provided with support component;The utility model is driven mechanism type cleaning structure by differential pressure, and the cleaning structure is only started under the influence of pressure change when blocking, after dredging is completed, the position of fixed ring is reset by reset spring reset, will not interfere with the normal work of centrifugal pump, anti-blocking protection treatment is carried out to centrifugal pump.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, and in particular to an anti-clogging centrifugal pump. Background Technology

[0002] Centrifugal pumps are general-purpose machines that use the centrifugal force generated by the rotation of an impeller to transport liquids. They are widely used in municipal water supply, industrial circulation, sewage treatment and other fields. The impeller is driven by a motor to rotate at high speed, forming a low-pressure zone at the impeller inlet to draw in liquid. After being accelerated by the impeller, the liquid is discharged through the guide frame. However, when transporting media containing solid particles, fibrous impurities or high viscosity, traditional centrifugal pumps use a single flow channel design. When fibrous impurities are mixed in the liquid, the fibers are easy to get tangled at the root of the impeller blades or in the gap between the hub and the cover plate, causing blockage. This invention addresses the aforementioned technical bottlenecks by proposing an anti-clogging centrifugal pump. It utilizes a pressure differential drive mechanism to dynamically remove blockages. This cleaning structure only activates when blocked due to pressure changes. After unblocking, a reset spring repositions the fixed ring, ensuring uninterrupted operation and providing anti-clogging protection for the centrifugal pump. Utility Model Content

[0003] In order to overcome the problem that when fibrous impurities are mixed in with the liquid during the daily operation of traditional centrifugal pumps, the fibers are easily wrapped around the root of the impeller blades or the gap between the hub and the cover plate, causing blockage.

[0004] The technical solution of this utility model is as follows: a centrifugal pump with anti-clogging capability, comprising a body, a connecting shaft, a guide frame, a water outlet pipe, a first anti-clogging component, a second anti-clogging component, a water inlet component, and a support component. The connecting shaft is located on the inner side of the body, the guide frame is located on one side of the body, the water outlet pipe is located on one side of the guide frame, the first anti-clogging component is located on the inner side of the guide frame, the second anti-clogging component is located on the inner side of the guide frame, the water inlet component is located on one side of the guide frame, and the support component is located below the body. The first anti-clogging component includes a guide rod, a fixing ring, a first connecting ring, a first drive tooth, a first cleaning blade, a second connecting ring, a second drive tooth, a second cleaning blade, and a return spring. The inner side of the guide frame... The device is equipped with a guide rod, a fixed ring on the inner side of the flow guide frame, and a sliding connection between the fixed ring and the guide rod. A first connecting ring is located on the outer side of the fixed ring, and the first connecting ring and the fixed ring are rotatably connected by a bearing. A second connecting ring is located on the inner side of the fixed ring, and the second connecting ring and the fixed ring are connected by a bearing. A first drive tooth is located on one side of the first connecting ring, and multiple sets of the first drive tooth are provided. A first cleaning blade is located on the outer side of the first connecting ring, and multiple sets of the first cleaning blade are provided. A second drive tooth is located on one side of the second connecting ring, and multiple sets of the second drive tooth are provided. A second cleaning blade is located on the inner side of the second connecting ring, and multiple sets of the second cleaning blade are provided. A return spring is located on one side of the fixed ring.

[0005] Preferably, the sliding direction of the fixed ring is limited by the guide rod. When the centrifugal pump is running normally, the impeller structure of the centrifugal pump is in a low-pressure zone near the inlet. At this time, the return spring and the fixed ring are compressed and pressed tightly against the cover plate by the water flow pressure. When the impeller structure of the centrifugal pump is blocked, the pressure difference between the position near the outlet pipe and the low-pressure zone increases, and the pressure on the inlet side decreases. The return spring pushes the fixed ring to slide along the guide rod. At the same time, with the flushing of the water flow, the first drive tooth and the second drive tooth drive the first connecting ring and the second connecting ring to rotate in the same direction as the water flow vortex, thereby driving the first cleaning blade and the second cleaning blade to rotate, cleaning the blockage deposited at the impeller structure of the centrifugal pump, preventing blockage. Moreover, this cleaning structure is only activated by pressure changes when there is a blockage. After the blockage is cleared, the return spring resets the position of the fixed ring, which will not interfere with the normal operation of the centrifugal pump.

[0006] Preferably, the second anti-clogging component includes an impeller frame and a first impeller blade. The impeller frame is provided on the outer side of the connecting shaft, and the first impeller blade is provided on one side of the impeller frame. Multiple sets of the first impeller blade are provided.

[0007] Preferably, the second anti-clogging component also includes a first connecting groove and a first cutting tooth. The first connecting groove is provided on the inner side of the first impeller blade, and the first cutting tooth is provided on the inner side of the first connecting groove. Multiple sets of the first cutting tooth are provided.

[0008] Preferably, the second anti-clogging component also includes a second impeller blade and a second connecting groove. A second impeller blade is provided on one side of the impeller frame. Multiple sets of the second impeller blade are provided. Multiple sets of first impeller blades and multiple sets of second impeller blades are arranged in an alternating ring on the side of the impeller frame. A second connecting groove is provided on the inner side of the second impeller blade. The positions of the first connecting groove on the first impeller blade and the second connecting groove on the second impeller blade are staggered.

[0009] Preferably, the second anti-blocking component also includes a second cutting tooth, and the inner side of the second connecting groove is provided with a second cutting tooth, and multiple sets of the second cutting tooth are provided.

[0010] Preferably, the water inlet assembly includes a flange, a water inlet pipe, and spiral blades. The flange is provided on one side of the flow guide, the water inlet pipe is provided on one side of the flange, and the spiral blades are provided on the inner side of the water inlet pipe. Multiple sets of spiral blades are provided.

[0011] Preferably, the support assembly includes a base plate and a bracket, with the base plate located below the body and the bracket located below the base plate.

[0012] The beneficial effects of this utility model are: The sliding direction of the fixed ring is limited by the guide rod. During normal operation of the centrifugal pump, the impeller structure near the inlet is a low-pressure area. At this time, the return spring and the fixed ring are compressed and pressed tightly against the cover plate by the water flow pressure. When blockage occurs around the impeller structure, the pressure difference between the area near the outlet pipe and the low-pressure area increases, and the pressure on the inlet side decreases. The return spring pushes the fixed ring to slide along the guide rod. At the same time, the water flow washes away the blockage and drives the first and second drive teeth to rotate the first and second connecting rings in the same direction as the water flow vortex. This drives the first and second cleaning blades to rotate, cleaning the blockage deposited at the impeller structure of the centrifugal pump and preventing blockage. This cleaning structure is only activated by pressure changes when there is blockage. After the blockage is cleared, the return spring resets the fixed ring and does not interfere with the normal operation of the centrifugal pump. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of the anti-clogging centrifugal pump of this utility model. Figure 2 The diagram shown is a first cross-sectional view of the anti-clogging centrifugal pump of this utility model. Figure 3 The diagram shown is a second cross-sectional view of the anti-clogging centrifugal pump of this utility model. Figure 4 The diagram shown is a partial cross-sectional view of the anti-clogging centrifugal pump of this utility model. Explanation of reference numerals in the attached drawings: 1. Body; 2. Connecting shaft; 3. Flow guide frame; 4. Water outlet pipe; 101. Guide rod; 102. Fixing ring; 103. First connecting ring; 104. First drive tooth; 105. First cleaning blade; 106. Second connecting ring; 107. Second drive tooth; 108. Second cleaning blade; 109. Return spring; 201. Impeller frame; 202. First impeller blade; 203. First connecting groove; 204. First cutting tooth; 205. Second impeller blade; 206. Second connecting groove; 207. Second cutting tooth; 301. Flange; 302. Water inlet pipe; 303. Spiral blade; 401. Base plate; 402. Support. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Please see Figure 1 and Figure 2 This utility model provides an embodiment: an anti-clogging centrifugal pump, including a body 1, a connecting shaft 2, a flow guide 3, a water outlet pipe 4, a first anti-clogging component, a second anti-clogging component, a water inlet component, and a support component. The connecting shaft 2 is arranged inside the body 1, the flow guide 3 is arranged on one side of the body 1, the water outlet pipe 4 is arranged on one side of the flow guide 3, the first anti-clogging component is arranged inside the flow guide 3, the second anti-clogging component is arranged inside the flow guide 3, the water inlet component is arranged on one side of the flow guide 3, and the support component is arranged below the body 1. The first anti-clogging component includes a guide rod 101, a fixing ring 102, a first connecting ring 103, a first drive tooth 104, a first cleaning blade 105, a second connecting ring 106, a second drive tooth 107, a second cleaning blade 108, and a return spring 109. The guide rod 101 is arranged inside the flow guide 3, and the flow guide 3 is arranged inside the flow guide 3. A fixed ring 102 is provided, which is slidably connected to the guide rod 101. A first connecting ring 103 is provided on the outer side of the fixed ring 102, and the first connecting ring 103 and the fixed ring 102 are rotatably connected by a bearing. A second connecting ring 106 is provided on the inner side of the fixed ring 102, and the second connecting ring 106 and the fixed ring 102 are connected by a bearing. A first driving tooth 104 is provided on one side of the first connecting ring 103, and multiple sets of the first driving tooth 104 are provided. A first cleaning blade 105 is provided on the outer side of the first connecting ring 103, and multiple sets of the first cleaning blade 105 are provided. A second driving tooth 107 is provided on one side of the second connecting ring 106, and multiple sets of the second driving tooth 107 are provided. A second cleaning blade 108 is provided on the inner side of the second connecting ring 106, and multiple sets of the second cleaning blade 108 are provided. A return spring 109 is provided on one side of the fixed ring 102.

[0016] Please see Figure 3 and Figure 4In this embodiment, the second anti-blocking component includes an impeller frame 201 and a first impeller blade 202. The impeller frame 201 is disposed on the outer side of the connecting shaft 2, and the first impeller blade 202 is disposed on one side of the impeller frame 201. Multiple sets of the first impeller blade 202 are disposed. The second anti-blocking component also includes a first connecting groove 203 and a first cutting tooth 204. The first connecting groove 203 is opened on the inner side of the first impeller blade 202, and the first cutting tooth 204 is disposed on the inner side of the first connecting groove 203. Multiple sets of the first cutting tooth 204 are disposed. The second anti-blocking component also includes a second impeller blade 205 and a second connecting groove 206. The second impeller blade 205 is disposed on one side of the impeller frame 201. Multiple sets of the second impeller blade 205 are disposed. Multiple sets of the first impeller blade 202 and multiple sets of the second impeller blade 205 are arranged in an alternating ring on the side of the impeller frame 201. The second connecting groove 206 is opened on the inner side of the second impeller blade 205. The first connecting groove 203 on the blade 202 and the second connecting groove 206 on the second impeller are staggered. The second anti-clogging component also includes a second cutting tooth 207. The second cutting tooth 207 is provided on the inner side of the second connecting groove 206. There are multiple sets of the second cutting tooth 207. In use, the connecting shaft 2 rotates to drive the impeller frame 201 to rotate. The rotation of the impeller frame 201 drives the first impeller blade 202 and the second impeller blade 205 to rotate. When the impeller frame 201 rotates, the first connecting groove 203 and the second connecting groove 206 are high-pressure areas near the hub and low-pressure areas near the rim, forming a jet that penetrates the groove structure. The jet continuously scours the flow channel between the first impeller blade 202 and the second impeller blade 205. The misalignment of the groove structure on adjacent blades causes the jet to form cross turbulence, which disrupts the accumulation of impurities. The first cutting tooth 204 and the second cutting tooth 207 cut long fiber impurities to assist in anti-clogging.

[0017] The water inlet assembly includes a flange 301, an inlet pipe 302, and a spiral blade 303. The flange 301 is located on one side of the flow guide frame 3, and the inlet pipe 302 is located on the other side of the flange 301. The spiral blade 303 is located on the inner side of the inlet pipe 302. Multiple sets of spiral blades 303 are provided. During use, when water flows into the pump through the inlet pipe 302, it is affected by the spiral blades 303 to form a spiral turbulence, which allows impurities to be suspended in the center of the inlet liquid, preventing them from accumulating in the pipe structure at the inlet end and causing blockage. The support assembly includes a base plate 401 and a bracket 402. The base plate 401 is located below the body 1, and the bracket 402 is located below the base plate 401. During use, the body 1 is supported by the bracket 402 and the base plate 401, thereby supporting the centrifugal pump.

[0018] During operation, the system first achieves adaptive clearance of blockages through differential pressure drive. The fixed ring 102 is sleeved on the guide rod 101 inside the guide frame 3, and its two sides are connected to the first connecting ring 103 and the second connecting ring 106 respectively through bearings. When the centrifugal pump is working normally, a low-pressure zone is formed at the impeller inlet, and the fixed ring 102 is pressed tightly against the pump body cover plate by the water flow pressure and the return spring 109. When the impeller or flow channel is blocked, the pressure on the outlet pipe 4 side rises sharply, resulting in an increase in differential pressure. The return spring 109 pushes the fixed ring 102 to slide along the guide rod 101 towards the impeller. At this time, the water flow forms a vortex through the first drive tooth 104 on the surface of the first connecting ring 103 and the second drive tooth 107 on the surface of the second connecting ring 106, driving the two connecting rings to rotate in the same direction. The first cleaning blade 105 on the outer side of the first connecting ring 103 cuts the entangled material at the root of the impeller, and the second cleaning blade 108 on the inner side of the second connecting ring 106 simultaneously cleans the impeller hub gap impurities. The second anti-clogging component adopts a dual-channel impeller structure to enhance anti-clogging performance. The impeller frame 201 is driven to rotate by the connecting shaft 2, and its surface is alternately distributed with first impeller blades 202 and second impeller blades 205. The first connecting groove 203 of the first impeller blade 202 is fitted with a first cutting tooth 204, and the second connecting groove 206 of the second impeller blade 205 is provided with a second cutting tooth 207. The two sets of cutting teeth are arranged in a spatially staggered manner. When the impeller rotates at high speed, the first connecting groove 203 and the second connecting groove 206 form a high-pressure zone on the hub side and a low-pressure zone on the rim side, generating a jet that penetrates the blades. This jet continuously scours the flow channels between adjacent blades, forming a cross turbulent flow field and disrupting the conditions for impurity deposition. The water inlet assembly prevents inlet blockage through a spiral flow guiding structure; three sets of spiral blades 303 are welded to the inner wall of the water inlet pipe 302, and the blade pitch is optimized according to the water inlet velocity; when the medium enters the pump body, the spiral blades 303 force the fluid to generate spiral motion, so that solid particles or fibrous impurities are evenly suspended in the core area of ​​the liquid flow.

[0019] Through the above steps, the sliding direction of the fixed ring 102 is limited by the guide rod 101. When the centrifugal pump is running normally, the impeller structure of the centrifugal pump is in a low-pressure area near the inlet. At this time, the return spring 109 and the fixed ring 102 are compressed and pressed tightly against the cover plate by the water flow pressure. When the impeller structure of the centrifugal pump is blocked, the pressure difference between the position near the outlet pipe 4 and the low-pressure area increases, and the pressure on the inlet side decreases. The return spring 109 pushes the fixed ring 102 to slide along the guide rod 101. At the same time, with the flushing of the water flow, the first drive tooth 104 and the second drive tooth 107 drive the first connecting ring 103 and the second connecting ring 106 to rotate in the same direction as the water flow vortex, thereby driving the first cleaning blade 105 and the second cleaning blade 108 to rotate, cleaning the blockage deposited at the impeller structure of the centrifugal pump, preventing blockage. Moreover, this cleaning structure is only activated by pressure changes when there is a blockage. After the blockage is cleared, the return spring 109 resets the position of the fixed ring 102, which will not interfere with the normal operation of the centrifugal pump.

[0020] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A clog-resistant centrifugal pump, comprising an organism (1), characterized in that: It also includes a connecting shaft (2), a flow guide (3), a water outlet pipe (4), a first anti-clogging component, a second anti-clogging component, a water inlet component, and a support component. The connecting shaft (2) is provided on the inner side of the body (1), the flow guide (3) is provided on one side of the body (1), the water outlet pipe (4) is provided on one side of the flow guide (3), the first anti-clogging component is provided on the inner side of the flow guide (3), the second anti-clogging component is provided on the inner side of the flow guide (3), and the water inlet component is provided on one side of the flow guide (3). A support assembly is provided below 1). The first anti-blocking assembly includes a guide rod (101), a fixing ring (102), a first connecting ring (103), a first drive tooth (104), a first cleaning blade (105), a second connecting ring (106), a second drive tooth (107), a second cleaning blade (108), and a return spring (109). A guide rod (101) is provided on the inner side of the flow guide (3), and a fixing ring (102) is provided on the inner side of the flow guide (3) to fix... Ring (102) and guide rod (101) are slidably connected. A first connecting ring (103) is provided on the outer side of the fixed ring (102). The first connecting ring (103) and the fixed ring (102) are rotatably connected by a bearing. A second connecting ring (106) is provided on the inner side of the fixed ring (102). The second connecting ring (106) and the fixed ring (102) are connected by a bearing. A first driving tooth (104) is provided on one side of the first connecting ring (103). Multiple sets of the first driving tooth (104) are provided. A first cleaning blade (105) is provided on the outer side of the first connecting ring (103). Multiple sets of the first cleaning blade (105) are provided. A second driving tooth (107) is provided on one side of the second connecting ring (106). Multiple sets of the second driving tooth (107) are provided. A second cleaning blade (108) is provided on the inner side of the second connecting ring (106). Multiple sets of the second cleaning blade (108) are provided. A return spring (109) is provided on one side of the fixed ring (102).

2. The anti-clogging centrifugal pump according to claim 1, characterized in that: The second anti-blocking component includes an impeller frame (201) and a first impeller blade (202). The impeller frame (201) is provided on the outside of the connecting shaft (2), and the first impeller blade (202) is provided on one side of the impeller frame (201). The first impeller blade (202) is provided in multiple sets.

3. The anti-clogging centrifugal pump according to claim 2, characterized in that: The second anti-blocking component also includes a first connecting groove (203) and a first cutting tooth (204). The first connecting groove (203) is provided on the inner side of the first impeller (202), and the first cutting tooth (204) is provided on the inner side of the first connecting groove (203). Multiple sets of the first cutting tooth (204) are provided.

4. A clog-resistant centrifugal pump according to claim 3, characterized in that: The second anti-clogging component also includes a second impeller blade (205) and a second connecting groove (206). The second impeller blade (205) is provided on one side of the impeller frame (201). There are multiple sets of the second impeller blade (205). Multiple sets of first impeller blades (202) and multiple sets of second impeller blades (205) are arranged in an alternating ring on the side of the impeller frame (201). The second connecting groove (206) is provided on the inner side of the second impeller blade (205). The first connecting groove (203) on the first impeller blade (202) and the second connecting groove (206) on the second impeller are staggered in position.

5. A clog-resistant centrifugal pump according to claim 4, characterized in that: The second anti-blocking component also includes a second cutting tooth (207), and the inner side of the second connecting groove (206) is provided with the second cutting tooth (207), and multiple sets of the second cutting tooth (207) are provided.

6. A clog-resistant centrifugal pump according to claim 1, characterized in that: The water inlet assembly includes a flange (301), a water inlet pipe (302), and a spiral blade (303). The flange (301) is provided on one side of the flow guide (3), the water inlet pipe (302) is provided on one side of the flange (301), and the spiral blade (303) is provided on the inner side of the water inlet pipe (302). There are multiple sets of spiral blades (303).

7. A clog-resistant centrifugal pump according to claim 1, characterized in that: The support assembly includes a base plate (401) and a bracket (402). The base plate (401) is located below the body (1), and the bracket (402) is located below the base plate (401).

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