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CN-224228966-U - Desilting pump blast pipe assembly

CN224228966UCN 224228966 UCN224228966 UCN 224228966UCN-224228966-U

Abstract

The utility model discloses an exhaust pipe assembly of a dredging pump, which belongs to the technical field of dredging pump accessory equipment and comprises a vacuum suction assembly for intermittently providing negative pressure for the dredging pump; the vacuum pump is characterized by further comprising a secondary pressurizing structure assembly, wherein the vacuum pump assembly is communicated with a pump discharge pipe orifice and a discharge pipeline through the secondary pressurizing structure assembly, and the secondary pressurizing structure assembly comprises a reducing expansion joint, a noise reduction connecting pipe and a Y-shaped three-way pipe, wherein the nozzle, the necking joint, the exhaust pipe and the reducing expansion joint are coaxially arranged. The dredging pump exhaust pipe assembly of the secondary supercharging structure assembly has the beneficial effects that the dredging pump exhaust pipe assembly of the secondary supercharging structure assembly is provided, the shrinkage section and the diffusion section of the nozzle are matched, the shrinkage section and the diffusion section are realized by the shrinkage joint, the exhaust pipe and the reducing expansion joint, so that the purpose of secondary supercharging is realized, and the suction force is increased from 6-8psi to 10-12psi.

Inventors

  • CHANG JING
  • LI QINGHUI
  • CHANG QINGGANG
  • CHANG HUIYUAN

Assignees

  • 山东鱼台东源矿用设备有限责任公司

Dates

Publication Date
20260512
Application Date
20250624

Claims (7)

  1. 1. The dredging pump exhaust pipe assembly comprises a vacuum suction assembly for intermittently providing negative pressure for a dredging pump, and is characterized by further comprising a secondary supercharging structure assembly; The vacuum suction assembly is communicated with the pump discharge pipeline (12) and the discharge pipeline (13) through the secondary pressurizing structure assembly; The vacuum suction assembly comprises a pipe cavity (3), a vacuum pipe orifice (2) communicated with a pump is arranged on one side of the pipe cavity (3), an air inlet straight pipe (1) is penetrated on one side of the wall of the pipe cavity (3) in the direction perpendicular to the vacuum pipe orifice (2), the air inlet straight pipe (1) is connected with a nozzle (5), a necking connector (6) is arranged on the other side of the wall of the pipe cavity (3), the nozzle (5) and the necking connector (6) are arranged in a non-contact coaxial manner, the necking connector (6) is connected with an exhaust pipe (7), the exhaust pipe (7) is communicated with the secondary supercharging structure assembly, The secondary supercharging structure assembly comprises a reducing expansion port joint (9), a noise reduction connecting pipe (10) and a Y-shaped three-way pipe (11), and the nozzle (5), the necking connector (6), the exhaust pipe (7) and the reducing expansion port joint (9) are coaxially arranged.
  2. 2. The dredging pump exhaust pipe assembly according to claim 1, wherein one end of the reducing expansion joint (9) is detachably communicated with the exhaust pipe (7), the exhaust pipe (7) is communicated with the necking joint (6), the other end of the reducing expansion joint (9) is detachably communicated with the noise reduction connecting pipe (10), and the noise reduction connecting pipe (10) is respectively communicated with the pump discharge pipe port (12) and the discharge pipe pipeline (13) through a Y-shaped three-way pipe (11).
  3. 3. The dredging pump exhaust pipe assembly according to claim 1, characterized in that the nozzle (5) is provided with a contraction section (21) and a diffusion section (23) which are connected with the inlet section in sequence, and the connection part of the contraction section (21) and the diffusion section (23) is a throat (22).
  4. 4. A dredging pump exhaust pipe assembly according to claim 1, characterized in that the nozzle (5) is detachably connected with the inlet straight pipe (1) by means of a screw thread.
  5. 5. The dredging pump exhaust pipe assembly according to claim 1, characterized in that the pipe cavity (3) is detachably connected with the necking connector (6) through a sealing gasket and a clamp (4).
  6. 6. A dredging pump exhaust pipe assembly according to claim 1, characterized in that the exhaust pipe (7) is provided with a pneumatic valve (8).
  7. 7. The dredging pump exhaust pipe assembly according to claim 1, characterized in that the flaring cone angle of the reducing expansion joint (9) is 20-60 degrees.

Description

Desilting pump blast pipe assembly Technical Field The utility model belongs to the technical field of dredging pump accessory equipment, and particularly relates to an exhaust pipe assembly of a dredging pump. Background When dredging and discharging sewage and conveying a mixture containing blocky and granular coal slime, a sewage pump is generally used, the existing pneumatic dredging and discharging sewage pump comprises a pump body, a feed pipe and a discharge pipe are respectively arranged at two ends of the pump body, a pneumatic bidirectional knife gate valve is arranged between the feed pipe and the discharge pipe, a vacuumizing component communicated with the pump body is further arranged at the outer side of the pump body, the vacuumizing component utilizes a Venturi principle to generate vacuum degree and plays a role in pumping the pump body, and the national patent of the prior application of the company with the patent number 201820161412.7 discloses a vacuum pumping device of the pneumatic dredging and discharging pump for mines, namely the venturi principle is utilized, the problems of low vacuum degree and long vacuumizing time in the pneumatic dredging and discharging pump for mines are effectively solved, and the rated flow of the pneumatic dredging and discharging pump for mines is increased, so that the working efficiency is improved; However, with the iteration of the product and the provision of the customer demand, the product cannot meet the customer demand, and although the product is applied to a pneumatic dredging and blow-down pump, the product can generate suction of 6-8psi, but cannot meet the current market demand, so that the company, after long-term research and development, unexpectedly creates a dredging pump exhaust pipe assembly, and the suction can be further improved by virtue of the Venturi principle. Disclosure of utility model In order to solve the problems and overcome the defects in the prior art, the utility model provides an exhaust pipe assembly of a dredging pump; The first technical problem to be solved is that the pneumatic dredging blow-down pump for mining on the market at present mostly adopts the vacuum suction device of the prior application of the company, and the product can generate suction of 6-8psi although being applied to the pneumatic dredging blow-down pump, but cannot meet the current market demand. The utility model solves the technical problems and adopts the concrete technical scheme that the dredging pump exhaust pipe assembly comprises a vacuum suction component for intermittently providing negative pressure for a dredging pump, and is characterized by also comprising a secondary pressurizing structure component; The vacuum suction assembly is communicated with a pump discharge pipe orifice and a discharge pipeline through a secondary pressurizing structure assembly; The vacuum suction assembly comprises a tube cavity, wherein one side of the tube cavity is provided with a vacuum tube orifice communicated with a pump, one side of the tube cavity is perpendicular to the direction of the vacuum tube orifice, one side of the wall of the tube cavity is penetrated with an air inlet straight tube, the air inlet straight tube is connected with a nozzle, the other side of the wall of the tube cavity is provided with a necking connector, the nozzle and the necking connector are arranged coaxially in a non-contact way, the necking connector is connected with an exhaust pipe, the exhaust pipe is communicated with the secondary pressurizing structure assembly, The secondary supercharging structure assembly comprises a reducing expansion joint, a noise reduction connecting pipe and a Y-shaped three-way pipe, and the nozzle, the necking joint, the exhaust pipe and the reducing expansion joint are coaxially arranged. Further, one end of the reducing expansion joint is detachably communicated with the exhaust pipe, the exhaust pipe is communicated with the necking joint, the other end of the reducing expansion joint is detachably communicated with the noise reduction connecting pipe, and the noise reduction connecting pipe is respectively communicated with the pump discharge pipe orifice and the discharge pipe pipeline through a Y-shaped three-way pipe. Further, the nozzle is provided with a contraction section and a diffusion section which are sequentially connected with the inlet section, and the connection part of the contraction section and the diffusion section is a throat. Further, the nozzle is detachably connected with the air inlet straight pipe through threads. Further, the pipe cavity is detachably connected with the necking connector through a sealing gasket and a clamp. Further, a pneumatic valve is arranged on the exhaust pipe. Further, the flaring cone angle of the reducing expansion joint is 20-60 degrees. The beneficial effects of the utility model are as follows: The utility model has the advantages that the dredging pump exhaust pipe