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CN-121976966-A - Wear-resistant lining plate of slurry pump

CN121976966ACN 121976966 ACN121976966 ACN 121976966ACN-121976966-A

Abstract

The invention provides a wear-resistant lining plate of a slurry pump, which belongs to the technical field of slurry pumps and comprises a lining plate framework, wherein a ceramic layer is adhered to one side of the lining plate framework close to an impeller, the wear-resistant layer is arranged on one side of the ceramic layer close to the impeller, the ceramic layer comprises a plurality of inner ring ceramic plates, the inner ring ceramic plates are spliced circumferentially to form an inner ring ceramic ring, and the inner ring ceramic ring is positioned on one side of the lining plate framework close to the central axis of the lining plate framework along the radial direction. According to the wear-resistant lining plate of the slurry pump, the ceramic rings are formed by circumferentially splicing the ceramic plates of the inner ring, so that the internal stress caused by thermal expansion and cold contraction can be released, medium impact can be resisted, cracking and cracking of the ceramic layers can be avoided, and meanwhile, the bonding firmness with a lining plate framework is improved, and falling is prevented. By combining the flow field characteristics of the slurry pump, the ceramic ring is accurately arranged in the high-abrasion inner ring area without integral thickening, so that the problem of uneven local abrasion is solved. Through subregion composite structure, wear-resisting material uses in a concentrated way, reduces the consumptive material cost, prolongs welt life by a wide margin.

Inventors

  • ZHEN WEIWEI
  • ZHANG GENGMING
  • REN LIBIN
  • YAN JIEFEI
  • MA HONGBO

Assignees

  • 石家庄开发区石泵泵业有限公司

Dates

Publication Date
20260505
Application Date
20260324

Claims (10)

  1. 1. The wear-resistant lining plate of the slurry pump is characterized by comprising a lining plate framework (100), wherein a ceramic layer is bonded on one side, close to an impeller, of the lining plate framework (100), and a wear-resistant layer is arranged on one side, close to the impeller, of the ceramic layer; the ceramic layer comprises a plurality of inner ring ceramic plates (211), the inner ring ceramic plates (211) are circumferentially spliced to form an inner ring ceramic ring (210), and the inner ring ceramic ring (210) is positioned on one side, close to the central axis of the lining plate framework (100) in the radial direction.
  2. 2. The slurry pump wear-resistant lining plate according to claim 1, wherein the ceramic layer further comprises a plurality of outer ring ceramic plates (221), the plurality of outer ring ceramic plates (221) are circumferentially spliced to form an outer ring ceramic ring (220), and the outer ring ceramic ring (220) is surrounded on the outer side of the inner ring ceramic ring (210).
  3. 3. The slurry pump wear-resistant lining plate according to claim 2, wherein a first positioning block (2111) is provided on a circumferential side edge of the inner ring ceramic plate (211), a first positioning groove (2112) is provided on another circumferential side edge of the inner ring ceramic plate (211), and two adjacent circumferential side edges of two adjacent inner ring ceramic plates (211) are axially inserted and matched with the first positioning block (2111) of one inner ring ceramic plate (211) and the first positioning groove (2112) of the other inner ring ceramic plate (211); A second positioning block (2211) is arranged on one circumferential side edge of the outer ring ceramic plate (221), a second positioning groove (2212) is arranged on the other circumferential side edge of the outer ring ceramic plate (221), and two adjacent circumferential side edges of two adjacent outer ring ceramic plates (221) are axially inserted and matched with the second positioning block (2211) of one outer ring ceramic plate (221) and the second positioning groove (2212) of the other outer ring ceramic plate (221); the inner ring ceramic plate (211) is provided with a third positioning groove (2113) at the outer side in the axial direction, the outer ring ceramic plate (221) is provided with a third positioning block (2213) at the inner side in the axial direction, and the radially adjacent inner ring ceramic plate (211) and outer ring ceramic plate (221) are axially inserted and matched with each other through the third positioning block (2213) and the third positioning groove (2113).
  4. 4. A slurry pump wear-resistant lining plate according to claim 3, wherein a first limiting block (2114) extending perpendicular to the length direction of the first positioning block (2111) is arranged at the tail end of the first positioning block (2111), a first limiting groove (2115) extending perpendicular to the length direction of the first positioning groove (2112) is arranged at the tail end of the first positioning groove (2112), and the first limiting block (2114) is axially inserted and matched with the first limiting groove (2115); The tail end of the second positioning block (2211) is provided with a second limiting block (2214) which extends perpendicular to the length direction of the second positioning block (2211), the tail end of the second positioning groove (2212) is provided with a second limiting groove (2215) which extends perpendicular to the length direction of the second positioning groove (2212), and the second limiting block (2214) is in axial plug-in fit with the second limiting groove (2215).
  5. 5. The slurry pump wear-resistant lining plate according to claim 4, wherein the ceramic layers are provided with a plurality of layers along the axial direction, and two laminated inner ring ceramic plates (211) and two laminated outer ring ceramic plates (221) which are positioned in two adjacent ceramic layers are connected through an axial plug-in structure; the gaps between two adjacent inner ring ceramic plates (211) and the gaps between any two adjacent outer ring ceramic plates (221) are staggered; the gaps between two adjacent inner ring ceramic plates (211) are staggered with the gaps between any two adjacent inner ring ceramic plates (211) of the adjacent layers; the gaps between two adjacent outer ring ceramic plates (221) are staggered with the gaps between any two adjacent outer ring ceramic plates (221) of the adjacent layers.
  6. 6. The slurry pump wear-resistant lining plate according to claim 2, wherein the lining plate framework (100) is sequentially provided with an inner ring framework (110) and an outer ring framework (120) from inside to outside in the radial direction, the inner ring ceramic ring (210) is adhered to one side of the inner ring framework (110) close to the impeller, and the outer ring ceramic ring (220) is adhered to one side of the outer ring framework (120) close to the impeller; The wear-resisting layer is rubber layer (310), rubber layer (310) has radially from inside to outside set gradually inner circle rubber (311) and outer lane rubber (312), inner circle rubber (311) parcel inner circle ceramic ring (210) and connect inner circle skeleton (110), outer lane rubber (312) parcel outer lane ceramic ring (220) and connect outer lane skeleton (120).
  7. 7. The slurry pump wear-resistant lining plate according to claim 1, wherein an inner spigot (130) and an outer spigot (140) are respectively arranged on one side of the lining plate framework (100) close to the impeller from inside to outside in the radial direction, and the ceramic layer is positioned between the inner spigot (130) and the outer spigot (140).
  8. 8. The slurry pump wear-resistant lining plate according to claim 7, wherein a boss (150) is arranged on one side of the lining plate framework (100) close to the impeller, the boss (150) is located in the middle of the lining plate framework (100) along the radial direction, and the inner side wall of the boss (150) forms the outer spigot (140); Wherein, wearing layer has radially from inside to outside set gradually inside wearing layer (313), middle part wearing layer (314) and outside wearing layer (315), the position of middle part wearing layer (314) with boss (150) axial is relative, the thickness of outside wearing layer (315) is greater than or equal to middle part wearing layer (314), the thickness of middle part wearing layer (314) is greater than the thickness of inside wearing layer (313).
  9. 9. The slurry pump wear-resistant lining plate according to claim 1, wherein the wear-resistant layer is a metal cover plate (320), a circular ring groove (160) is formed on one side, close to the impeller, of the lining plate framework (100), the inner ring ceramic ring (210) is adhered in the circular ring groove (160), and the metal cover plate (320) is inserted in the circular ring groove (160) so as to seal the inner ring ceramic ring (210) in the circular ring groove (160).
  10. 10. The wear-resistant lining board of a slurry pump according to any one of claims 1 to 9, further comprising an early warning sensor (500) mounted on one side of the inner ring ceramic plate (211) close to the lining board framework (100), wherein a prefabricated wire slot is formed in the lining board framework (100) at a position corresponding to the early warning sensor (500), a signal wire (510) is arranged in the prefabricated wire slot in a penetrating manner, one end of the signal wire (510) is electrically connected with the early warning sensor (500), and the other end of the signal wire (510) is electrically connected with a detection device; the early warning sensor (500) comprises a water immersion sensor and/or an ultrasonic sensor; When the wear-resistant layer is worn through and the ceramic layer is worn until slurry flows to the position of the water immersion sensor, the water immersion sensor sends an induction signal to detection equipment through the signal wire (510), and the detection equipment triggers an alarm signal; when the wear-resistant layer is worn through and the ceramic layer is worn to a preset safety thickness, the ultrasonic sensor sends an induction signal to detection equipment through the signal wire (510), and the detection equipment triggers an alarm signal.

Description

Wear-resistant lining plate of slurry pump Technical Field The invention belongs to the technical field of slurry pumps, and particularly relates to a wear-resistant lining plate of a slurry pump. Background The slurry pump is core equipment for conveying solid-liquid two-phase medium in the fields of mine, metallurgy, electric power, chemical industry and the like, and is operated under the severe working conditions of high-concentration solid particle scouring, strong corrosion and high impact for a long time. As a key component of the slurry pump flow-through component, the lining board directly bears the coupling action of high-speed scouring, particle impact and corrosion of slurry medium, and the wear resistance of the lining board directly determines the service life, the running efficiency and the equipment operation and maintenance cost of the slurry pump. In order to improve the wear resistance of the lining plate, a ceramic composite lining plate structure is adopted in the industry gradually, and the wear resistance effect is optimized by utilizing the characteristics of high hardness and high wear resistance of the ceramic material, but the existing ceramic lining plate still has structural defects. On one hand, most ceramic lining plates adopt an integral ceramic structure, the processing difficulty is high, the cost is high, the integral cracking and falling off are easy to occur due to the influence of the thermal expansion and contraction and the impact effect, and the bonding firmness is not enough, on the other hand, the flow field inside the slurry pump is unevenly distributed, the inner ring area of the lining plate, which is radially close to the central axis, is more severely subjected to medium backflow and particle rotary cutting effect, the abrasion rate is far higher than that of the outer ring area, the lining plate is locally failed in advance, the integral service life is difficult to be prolonged, and meanwhile, the material waste is caused. Disclosure of Invention The invention aims to provide a wear-resistant lining plate of a slurry pump, and aims to solve the problems that an integral ceramic structure is easy to crack and fall off and is not firm in fixation, the inner ring of the wear-resistant lining plate is fast in wear, the whole service life is difficult to lift, and meanwhile, material waste is caused. In order to achieve the aim, the technical scheme adopted by the invention is that the wear-resistant lining board of the slurry pump comprises a lining board framework, wherein a ceramic layer is bonded on one side of the lining board framework, which is close to an impeller, and a wear-resistant layer is arranged on one side of the ceramic layer, which is close to the impeller; the ceramic layer comprises a plurality of inner ring ceramic plates, the inner ring ceramic plates are spliced circumferentially to form an inner ring ceramic ring, and the inner ring ceramic ring is positioned on one side of the lining plate framework, which is close to the central axis of the lining plate framework in the radial direction. In one possible implementation manner, the ceramic layer further includes a plurality of outer ring ceramic plates, and the plurality of outer ring ceramic plates are circumferentially spliced to form an outer ring ceramic ring, and the outer ring ceramic ring is circumferentially arranged on the outer side of the inner ring ceramic ring. In one possible implementation manner, a first positioning block is arranged on one circumferential side edge of the inner ring ceramic plate, a first positioning groove is arranged on the other circumferential side edge of the inner ring ceramic plate, and two adjacent circumferential side edges of two adjacent inner ring ceramic plates are axially inserted and matched with the first positioning block of one inner ring ceramic plate and the first positioning groove of the other inner ring ceramic plate; A second positioning block is arranged on one circumferential side edge of the outer ring ceramic plate, a second positioning groove is arranged on the other circumferential side edge of the outer ring ceramic plate, and two adjacent circumferential side edges of two adjacent outer ring ceramic plates are axially spliced and matched with the second positioning block of one outer ring ceramic plate and the second positioning groove of the other outer ring ceramic plate; The inner ring ceramic plate is provided with a third positioning groove at the axial outer side, the outer ring ceramic plate is provided with a third positioning block at the axial inner side, and the radially adjacent inner ring ceramic plate and outer ring ceramic plate are axially spliced and matched through the third positioning block and the third positioning groove. In one possible implementation manner, a first limiting block extending perpendicular to the length direction of the first positioning block is arranged at the tail end of the first p