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CN-224227100-U - Hydraulic mud gun head

CN224227100UCN 224227100 UCN224227100 UCN 224227100UCN-224227100-U

Abstract

The utility model belongs to the technical field of blast furnace ironmaking equipment, and discloses a hydraulic mud gun head. When the hydraulic mud gun head is used for plugging a blast furnace tap hole, the structure of the gun nozzle constrains the thermal expansion deformation of the second connecting part, so that gaps are not easy to generate between the gun nozzle and the gun head pad, and the plugging effect is prevented from being influenced by the leakage of stemming. The first shutoff portion and big gun mouth pass through outer conical surface and interior conical surface butt cooperation for in at least part of first shutoff portion can imbed big gun mouth, when hydraulic mud big gun head takes place to burn with molten iron contact, burn out the position and mostly concentrate on big gun head pad, the staff can to big gun head pad quick replacement, avoided maintaining for a long time to change the hydraulic mud big gun head and lead to the blast furnace to reduce the wind and step down even damping down, interrupt the continuity production of blast furnace. The false gun head further increases the protection of the gun head body, and the connection mode of the false gun head and the gun head pad is convenient for carrying out quick replacement on the false gun head, so that the maintenance speed of the hydraulic mud gun head is further improved.

Inventors

  • XIANG WENLI
  • SUN MINGWEI
  • DU SHUANG
  • WEI CUILI
  • ZHAO MINGHAI
  • HE YANQI

Assignees

  • 承德燕北冶金材料有限公司
  • 承德建龙特殊钢有限公司

Dates

Publication Date
20260512
Application Date
20250612

Claims (10)

  1. 1. Hydraulic mud gun head, its characterized in that includes: The gun head body (1) comprises a first connecting part (11) and a gun nozzle (12) which are connected with each other, a hollow cavity is formed in the first connecting part (11), a first flow passage (121) is formed in the gun nozzle (12), the first flow passage (121) is communicated with the hollow cavity, and the end face, far away from one end of the first connecting part (11), of the gun nozzle (12) is an inner conical surface (122) inclined towards the first connecting part (11); The gun head pad (2) comprises a second connecting part (21) and a first blocking part (22) which are connected with each other, wherein the second connecting part (21) and the first blocking part (22) are respectively provided with a second flow passage (211) communicated with the first flow passage (121), the second connecting part (21) can be inserted into the first flow passage (121), one side, close to the second connecting part (21), of the first blocking part (22) is provided with an outer conical surface (221), and the outer conical surface (221) can be in butt fit with the inner conical surface (122); The false gun head (3) comprises a third connecting part (31) and a second blocking part (32) which are connected with each other, wherein the third connecting part (31) and the second blocking part (32) are respectively provided with a third flow passage (311) communicated with the second flow passage (211), the third connecting part (31) can be inserted into the second flow passage (211), and the second blocking part (32) can be abutted to the first blocking part (22).
  2. 2. The hydraulic mud gun head according to claim 1, wherein the first blocking part (22) can cover at least the end face of the gun nozzle (12) far away from the end of the first connecting part (11), and the second blocking part (32) can cover at least the first blocking part (22).
  3. 3. The hydraulic mud gun head according to claim 1, wherein the inclination angle of the inner cone surface (122) ranges from 30 ° to 45 °, and the inclination angle of the outer cone surface (221) and the inclination angle of the inner cone surface (122) are kept consistent.
  4. 4. The hydraulic mud gun head according to claim 1, wherein the gun head pad (2) is connected with the gun head body (1) through a pin shaft, and the fake gun head (3) is connected with the gun head pad (2) through a pin shaft.
  5. 5. The hydraulic mud gun head according to claim 1, wherein the gun head pad (2) and the gun head body (1) are connected through a hydraulic locking mechanism, and the artificial gun head (3) and the gun head pad (2) are connected through the hydraulic locking mechanism.
  6. 6. Hydraulic mud gun head according to claim 1, characterized in that the gun head body (1) is internally provided with a plurality of cooling channels through which external cooling fluid can enter the gun head body (1).
  7. 7. The hydraulic mud gun head according to claim 1, further comprising a detection module for monitoring a burn-out state of the hydraulic mud gun head in real time.
  8. 8. Hydraulic mud gun head according to any one of claims 1-7, characterized in that the gun head body (1) is made of a heat resistant steel base material.
  9. 9. Hydraulic mud gun head according to any of claims 1-7, characterized in that the gun head mat (2) is made of tungsten carbide composite material.
  10. 10. Hydraulic mud gun head according to any one of claims 1-7, characterized in that the dummy gun head (3) is made of graphite-silicon nitride composite material.

Description

Hydraulic mud gun head Technical Field The utility model relates to the technical field of blast furnace ironmaking equipment, in particular to a hydraulic mud gun head. Background The blast furnace tap hole plugging device is key equipment in an iron-making process and is used for rapidly and safely closing a tap hole after the tapping of the blast furnace is finished, so that molten iron and slag are prevented from overflowing, and the hydraulic mud gun becomes main stream equipment for plugging the tap hole of the modern blast furnace due to the advantages of high thrust and high precision. In the process of loading the hydraulic mud gun, the gun head is in contact with molten iron, so that the lower part of the gun head is burnt out easily, and further, the molten iron overflows from the burnt out position of the lower part of the gun head. The utility model discloses a hydraulic mud gun blocks up tap hole big gun lip among the related art, including annular structure's big gun cap, big gun cap cover locates the big gun body periphery, and the coaxial big gun lip that inserts of front end internal surface of big gun cap, when the big gun lip is burnt out, the maintenance to hydraulic mud gun is accomplished to the accessible quick replacement big gun lip, avoids long-time maintenance to lead to the blast furnace to wind-reduction depressurization even damping down, interrupt the continuity production of blast furnace. However, the barrel cap sleeve of the hydraulic mud gun plugging tap hole lip is arranged on the periphery of the barrel body, when the blast furnace tap hole is plugged, the high-temperature environment easily enables the heated expansion degree of the barrel body and the barrel cap to be inconsistent, and then gaps are formed between the barrel body and the barrel cap, and the leakage of the stemming occurs at the gaps, so that the plugging effect of the hydraulic mud gun is affected. Disclosure of utility model The utility model aims to provide a hydraulic mud gun head, which solves the technical problem that in the prior art, the high-temperature environment easily causes inconsistent thermal expansion degree of a gun body and a gun cap, so that a gap is generated between the gun body and the gun cap. To achieve the purpose, the utility model adopts the following technical scheme: hydraulic mud gun head, wherein includes: The gun head body comprises a first connecting part and a gun nozzle which are connected with each other, a hollow cavity is formed in the first connecting part, a first flow passage is formed in the gun nozzle, the first flow passage is communicated with the hollow cavity, and the end face of one end of the gun nozzle, which is far away from the first connecting part, is an inner conical surface inclined towards the first connecting part; The gun head pad comprises a second connecting part and a first plugging part which are connected with each other, wherein the second connecting part and the first plugging part are provided with second flow passages communicated with the first flow passages, the second connecting part can be inserted into the first flow passages, one side, close to the second connecting part, of the first plugging part is provided with an outer conical surface, and the outer conical surface can be in butt fit with the inner conical surface; the false gun head comprises a third connecting part and a second blocking part which are connected with each other, wherein the third connecting part and the second blocking part are provided with third flow passages communicated with the second flow passages, the third connecting part can be inserted into the second flow passages, and the second blocking part can be abutted to the first blocking part. Optionally, the first blocking part can cover at least the end face of the gun nozzle far away from one end of the first connecting part, and the second blocking part can cover at least the first blocking part. Optionally, the inclination angle of the inner cone ranges from 30 ° to 45 °, and the inclination angle of the outer cone and the inclination angle of the inner cone remain consistent. Optionally, the gun head pad is connected with the gun head body through a pin shaft, and the fake gun head is connected with the gun head pad through a pin shaft. Optionally, the gun head pad is connected with the gun head body through a hydraulic locking mechanism, and the fake gun head is connected with the gun head pad through the hydraulic locking mechanism. Optionally, a plurality of cooling channels are arranged inside the gun head body, and external cooling fluid can enter the gun head body through the cooling channels. Optionally, the hydraulic mud gun head further comprises a detection module, wherein the detection module is used for monitoring the burning loss state of the hydraulic mud gun head in real time. Optionally, the gun head body is made of a heat-resistant steel base material. Optionally, the gun head pa