Crushing device for denitration catalyst

Abstract

The invention relates to a denitration catalyst crushing device, and relates to the technical field of denitration catalyst pretreatment, the denitration catalyst crushing device comprises a crushing barrel, a crushing assembly, a blowing assembly and a driving assembly; the crushing barrel is vertically arranged, a feeding pipe is arranged at the top end of the crushing barrel, a discharging pipe is arranged at the bottom end of the crushing barrel, a butterfly valve is installed on the discharging pipe, and the crushing assembly is located in the crushing barrel and comprises a driving part, a first crushing part, a filter screen, a second crushing part and a screening net; the driving part is positioned on the crushing barrel; the first crushing part is positioned in the crushing barrel and is used for primarily crushing the denitration catalyst; the filter screen is positioned below the first crushing part; the second crushing part is positioned below the filter screen and is used for performing secondary crushing on the denitration catalyst; the screening net is positioned below the second crushing part; the air blowing assembly is located in the crushing barrel and used for blowing materials subjected to secondary crushing; the driving assembly is located in the crushing barrel and used for driving the air blowing assembly to work. The device has the effect of improving the crushing precision of the denitration catalyst.

Description

Technical Field

[0001] This application relates to the technical field of denitration catalyst pretreatment, and particularly to a crushing device for denitration catalysts. Background Art

[0002] The denitration catalyst crushing device is a key pretreatment equipment in the SCR denitration catalyst regeneration process. It is mainly used to change the form of the failed plate-type and honeycomb-type denitration catalysts through physical crushing, solve the blockage problems of large denitration catalysts in the transportation, mixing, screening and other links, and meet the particle size requirements of subsequent chemical treatment, resource recovery and other processes.

[0003] The existing denitration catalyst crushing devices mainly use jaw crushers to initially crush the denitration catalysts, and then use hammer crushers to crush the denitration catalysts again, so that the denitration catalysts are not easily blocked in the transportation, mixing, screening and other links.

[0004] During the crushing process of denitration catalysts, due to the different structures of plate-type and honeycomb-type denitration catalysts, some denitration catalysts are over-crushed during crushing, while some denitration catalysts still do not reach the required particle size requirements, affecting the subsequent treatment effect. Summary of the Invention

[0005] In order to improve the crushing accuracy of denitration catalysts, this application provides a crushing device for denitration catalysts.

[0006] A crushing device for denitration catalysts provided by this application adopts the following technical solutions: A crushing device for denitration catalysts includes a crushing barrel, a crushing assembly, a blowing assembly and a driving assembly; the crushing barrel is vertically arranged, and a feed pipe is arranged at the top end, and a discharge pipe is arranged at the bottom end of the crushing barrel, and a butterfly valve is fixedly installed on the discharge pipe. The crushing assembly is located inside the crushing barrel and is used for crushing the denitration catalysts; the crushing assembly includes a driving part, a first crushing part, a filter screen, a second crushing part and a screening mesh; the driving part is located on the crushing barrel and is used to drive the first crushing part and the second crushing part to work; the first crushing part is located inside the crushing barrel and is used for initially crushing the denitration catalysts; the filter screen is located below the first crushing part and is fixedly connected to the crushing barrel; the second crushing part is located below the filter screen and is used for secondarily crushing the initially crushed denitration catalysts; the screening mesh is located below the second crushing part; the blowing assembly is located inside the crushing barrel and is used for blowing the secondarily crushed denitration catalysts; the driving assembly is located inside the crushing barrel and is used to drive the blowing assembly to work.

[0007] By adopting the above technical solution, when the denitration catalyst is crushed, the denitration catalyst enters the crushing barrel through the feed pipe. The driving part drives the first crushing part to work. The first crushing part preliminarily crushes the denitration catalyst. The unqualified particles are intercepted by the filter screen and continue to be crushed. The denitration catalyst passing through the filter screen is secondarily crushed by the second crushing part. The driving assembly controls the blowing assembly to work. The blowing assembly conveys air flow to the secondary crushing area during the secondary crushing process. The air flow disturbance makes the denitration catalyst evenly dispersed, avoiding the accumulation and caking of the denitration catalyst. At the same time, it accelerates the impact of the crushing blade on the denitration catalyst. The screening mesh controls the final discharge particle size, thereby improving the crushing accuracy of the denitration catalyst and the overall processing efficiency of the denitration catalyst regeneration system.

[0008] Optionally, the driving part includes a motor and a rotating rod; the motor is vertically arranged and located at the bottom end of the crushing barrel. The rotating rod is vertically arranged in the crushing barrel and fixedly connected to the output shaft of the motor. The rotating rod is provided with a guiding groove; the first crushing part includes a driving ring, a guiding block and a first crushing blade; the driving ring is sleeved on the rotating rod. The guiding block is fixedly connected to the driving ring. The guiding block is located in the guiding groove and is slidably connected to the rotating rod. The first crushing blade is horizontally arranged and fixedly connected to the driving ring; the crushing assembly further includes a connecting ring. The connecting ring is horizontally arranged and fixedly connected to the first crushing blade. The outer side wall of the connecting ring is in contact with the inner side wall of the crushing barrel; the second crushing part includes a second crushing blade. The second crushing blade is horizontally arranged and fixedly connected to the rotating rod.

[0009] By adopting the above technical solution, when the denitration catalyst is crushed, the motor drives the rotating rod to rotate. The limiting cooperation between the guiding block and the guiding groove makes the driving ring rotate synchronously with the rotating rod, driving the first crushing blade to form a rotational shearing effect in the horizontal direction to preliminarily crush the denitration catalyst; the connecting ring is in contact with the inner wall of the crushing barrel to form a stable support, ensuring the smoothness of the crushing process; the second crushing blade rotates synchronously with the rotating rod to secondarily crush the denitration catalyst passing through the filter screen. Through the coordinated action of the upper and lower double crushing blades, hierarchical crushing is achieved under a single driving source, thereby improving the crushing efficiency of the denitration catalyst.

[0010] Optionally, the air blowing assembly includes an airbag, a limiting ring, a spray head, and a first connecting pipe; the airbag is hollow inside and filled with gas. The airbag is located below the second crushing part, and the bottom end is fixedly connected to the screening mesh. The limiting ring is located at the top of the airbag and is fixedly connected to the airbag. The limiting ring is located below the second crushing part, and the outer sidewall is fixedly connected to the inner sidewall of the crushing barrel. The spray head is fixedly arranged on the inner sidewall of the limiting ring. The spray head is inclined. Two ends of the first connecting pipe are respectively communicated with the airbag and the spray head; a limiting groove is formed in the crushing barrel, and a limiting block is fixedly connected to the screening mesh. The limiting block is located in the limiting groove and is slidably connected to the crushing barrel; the driving assembly is used to drive the screening mesh to squeeze the airbag.

[0011] By adopting the above technical solution, during the process of the second crushing blade crushing the denitration catalyst for the second time, the driving assembly drives the screening mesh to squeeze the airbag upward, and the gas in the airbag is transported to the spray head through the first connecting pipe; the spray head sprays air flow to the area of the second crushing blade at an inclined angle, and the air flow disturbance makes the crushed denitration catalyst evenly dispersed, avoiding the caking and accumulation of the denitration catalyst, and at the same time accelerating the collision frequency between the denitration catalyst and the second crushing blade, thereby improving the crushing efficiency of the denitration catalyst.

[0012] Optionally, the air blowing assembly further includes a second connecting pipe. One end of the second connecting pipe is communicated with the airbag, and the other end penetrates outside the crushing barrel. A first one-way valve is fixedly installed on the first connecting pipe, and a second one-way valve is fixedly installed on the second connecting pipe.

[0013] By adopting the above technical solution, when the screening mesh squeezes the airbag, the gas in the airbag is unidirectionally transported to the spray head through the first connecting pipe and the first one-way valve to complete the air flow purge; when the screening mesh resets, the airbag inhales air from the outside for supplement through the second connecting pipe and the second one-way valve. The first one-way valve prevents the denitration catalyst or air flow in the crushing area from flowing back into the airbag. This structure realizes the directional control of the air flow and the pressure self-balance through two one-way valves, which not only ensures the continuous and stable output of the purge air flow but also maintains the dynamic balance of the internal pressure of the airbag.

[0014] Optionally, the spray head, the first connecting pipe, and the first one-way valve are arranged at intervals along the circumferential direction of the crushing barrel.

[0015] By adopting the above technical solution, during the secondary crushing process, when the airbag is squeezed by the screening mesh, the gas is transported to the corresponding nozzles through a plurality of first connecting pipes and first one-way valves arranged at circumferential intervals; the nozzles are evenly distributed along the circumference of the crushing barrel to form an annular air flow array, and the obliquely sprayed air flow covers the entire working area of the second crushing part. This layout enables the air flow to act evenly on the crushed denitration catalyst, eliminates local accumulation dead corners, and enhances the fluidity of the denitration catalyst in the crushing area; at the same time, the circumferentially spaced air flow impacts to form a dynamic turbulence, which increases the contact frequency and impact strength between the crushing blades and the denitration catalyst. Through the cooperative action of multiple nozzles, a uniform air flow field is formed on the radial section of the crushing barrel, improving the processing efficiency of the secondary crushing.

[0016] Optionally, the driving assembly includes an external thread sleeve, the external thread sleeve is sleeved on the rotating rod and fixedly connected to the rotating rod, and the external thread sleeve is threadedly connected to the screening mesh.

[0017] By adopting the above technical solution, when the denitration catalyst is crushed, the rotating rod rotates to drive the external thread sleeve to rotate synchronously, and the threaded fit between the external thread sleeve and the screening mesh converts the rotational motion into the axial displacement of the screening mesh, so that the motor synchronously controls the rotation of the crushing blades and the displacement of the screening mesh.

[0018] Optionally, the driving assembly further includes an adjusting telescopic rod, a driving telescopic rod and a third connecting pipe; the adjusting telescopic rod is vertically arranged, and the fixed end is fixedly connected to the inner bottom wall of the crushing barrel, the movable end of the adjusting telescopic rod is fixedly connected to the screening mesh, and the rod chamber of the adjusting telescopic rod is filled with liquid; a spring is vertically arranged in the rodless chamber of the adjusting telescopic rod, and both ends of the spring are fixedly connected to the rodless chamber and the rod chamber of the adjusting telescopic rod respectively, and the spring is in a compressed state; the driving telescopic rod is vertically arranged, and the fixed end is fixedly connected to the top of the filter screen, the rod chamber of the driving telescopic rod is filled with liquid, and the movable end of the driving telescopic rod is slidably connected to the connecting ring; one end of the third connecting pipe is communicated with the rod chamber of the adjusting telescopic rod, and the other end is communicated with the rod chamber of the driving telescopic rod.

[0019] By adopting the above technical solution, when the screening mesh moves upward, the spring in the adjusting telescopic rod is reset due to the release of the compression force, the movable end of the adjusting telescopic rod extends, and the liquid in the rod chamber of the adjusting telescopic rod flows through the third connecting pipe into the rod chamber of the driving telescopic rod, so that the volume of the rod chamber of the driving telescopic rod increases, the movable end of the driving telescopic rod contracts, and the connecting ring drives the first crushing blade to slide downward, making it easy to adjust the height of the first crushing blade in the crushing barrel. The first crushing blade is easy to crush the unqualified denitration catalyst on the filter screen, improving the crushing accuracy of the denitration catalyst.

[0020] Optionally, a limiting chute is provided at the bottom end of the connecting ring, and the top end of the movable end of the driving telescopic rod is located in the limiting chute.

[0021] By adopting the above technical solution, when the first crushing blade drives the connecting ring to rotate, the movable end of the driving telescopic rod slides along the limiting chute, so that the driving telescopic rod is not easily displaced laterally, thereby improving the stability of the device.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: By providing the first crushing part and the second crushing part, the crushing efficiency of the denitration catalyst is improved; By providing the air blowing assembly, the crushing efficiency of the denitration catalyst is improved; By providing the driving assembly, the motor synchronously controls the rotation of the crushing blade and the operation of the air blowing assembly. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present application; Figure 2 is a cross-sectional view of an embodiment of the present application; Figure 3 is Figure 2 a partial enlarged view of A in Figure 4 is Figure 2 a partial enlarged view of B in

[0024] Description of the reference numerals: 1, crushing barrel; 11, feed pipe; 12, discharge pipe; 121, butterfly valve; 13, bracket; 14, limiting groove; 2, crushing assembly; 21, driving part; 211, motor; 212, rotating rod; 2121, guiding groove; 22, first crushing part; 221, driving ring; 222, guiding block; 223, first crushing blade; 23, connecting ring; 231, limiting chute; 24, filter screen; 25, second crushing part; 251, second crushing blade; 26, screening net; 261, limiting block; 3, air blowing assembly; 31, airbag; 32, limiting ring; 33, nozzle; 34, first connecting pipe; 341, first one-way valve; 35, second connecting pipe; 351, second one-way valve; 4, driving assembly; 41, external thread sleeve; 42, adjusting telescopic rod; 421, spring; 43, driving telescopic rod; 44, third connecting pipe. Detailed Description of the Embodiment

[0025] The following is a further detailed description of the present application with reference to the attached Figures 1-4 drawings.

[0026] The embodiment of the present application discloses a crushing device for denitration catalyst. Refer to Figure 1 and Figure 2, A crushing device for denitration catalyst includes a crushing barrel 1, a crushing component 2, a blowing component 3 and a driving component 4. The crushing component 2 is located inside the crushing barrel 1 and is used for crushing the denitration catalyst at least once. The blowing component 3 is located inside the crushing barrel 1 and is used for purging the crushed denitration catalyst. The driving component 4 is located inside the crushing barrel 1 and is used to drive the blowing component 3 to work.

[0027] During the crushing process of the denitration catalyst, the crushing component 2 crushes the denitration catalyst, the driving component 4 controls the blowing component 3 to work, and the blowing component 3 conveys air flow to the crushing area during the crushing process. The crushed materials are evenly dispersed through the air flow disturbance, thereby improving the crushing accuracy of the denitration catalyst.

[0028] Refer to Figure 1 and Figure 2 , The crushing barrel 1 is vertically arranged and is in the shape of a circular barrel. The top end of the crushing barrel 1 is fixedly connected with a feed pipe 11, and the feed pipe 11 is vertically arranged and is in the shape of a circular tube. The bottom end of the crushing barrel 1 is fixedly connected with a discharge pipe 12, and the discharge pipe 12 is vertically arranged and is in the shape of a circular tube. A butterfly valve 121 is fixedly installed on the discharge pipe 12. The bottom end of the crushing barrel 1 is fixedly provided with a bracket 13. A limiting groove 14 is formed on the crushing barrel 1, and the limiting groove 14 is in the shape of a rectangular groove.

[0029] Refer to Figure 1 and Figure 2 , The crushing component 2 includes a driving part 21, a first crushing part 22, a connecting ring 23, a filter net 24, a second crushing part 25 and a screening net 26. The driving part 21 is located on the crushing barrel 1 and is used to drive the first crushing part 22 and the second crushing part 25 to work. The driving part 21 includes a motor 211 and a rotating rod 212. The motor 211 is vertically arranged and is installed at the bottom end of the crushing barrel 1. The rotating rod 212 is vertically arranged inside the crushing barrel 1 and is in the shape of a circular rod. The rotating rod 212 is fixedly connected with the output shaft of the motor 211. A guiding groove 2121 is formed on the rotating rod 212, and the guiding groove 2121 is in the shape of a rectangular groove.

[0030] The first crushing part 22 is located inside the crushing barrel 1 and is used for initially crushing the denitration catalyst. The first crushing part 22 includes a driving ring 221, a guiding block 222 and crushing blades. The driving ring 221 is horizontally arranged and is in the shape of a circular ring. The driving ring 221 is sleeved on the rotating rod 212. The guiding block 222 is horizontally arranged and is in the shape of a rectangular block. The guiding block 222 is located inside the guiding groove 2121 and is fixedly connected with the driving ring 221. The guiding block 222 is slidably connected with the rotating rod 212 in the vertical direction. The first crushing blade 223 is horizontally arranged and is in the shape of a rectangular plate. The first crushing blade 223 is fixedly connected with the driving ring 221, and a plurality of first crushing blades 223 are arranged along the circumferential direction of the driving ring 221.

[0031] Refer to Figure 2, the connecting ring 23 is horizontally arranged and is circular. A plurality of first crushing blades 223 are fixedly connected to the connecting ring 23. The outer side wall of the connecting ring 23 contacts the inner side wall of the crushing barrel 1. A limiting chute 231 is opened at the bottom end of the connecting ring 23. The cross section of the limiting chute 231 can be a rectangular groove or an inverted trapezoidal groove. The filter screen 24 is horizontally arranged and is in the shape of a circular plate. The filter screen 24 is located below the first crushing blades 223 and is fixedly connected to the crushing barrel 1. The second crushing part 25 is located below the filter screen 24 and is used for secondary crushing of the preliminarily crushed denitration catalyst; the second crushing part 25 includes second crushing blades 251. The second crushing blades 251 are horizontally arranged and are in the shape of rectangular plates. The second crushing blades 251 are fixedly connected to the rotating rod 212, and a plurality of them are arranged along the circumference of the rotating rod 212. The screening mesh 26 is horizontally arranged and is in the shape of a circular plate. The screening mesh 26 is located below the second crushing blades 251 and is fixedly connected to the crushing barrel 1. A limiting block 261 is fixedly connected to the screening mesh 26. The limiting block 261 is horizontally arranged and is in the shape of a rectangular block. The limiting block 261 is located in the limiting groove 14 and is slidably connected to the crushing barrel 1 in the vertical direction.

[0032] When the denitration catalyst is crushed, the motor 211 drives the rotating rod 212 to rotate. The limiting cooperation between the guiding block 222 and the guiding groove 2121 causes the driving ring 221 to rotate synchronously with the rotating rod 212, driving the first crushing blades 223 to form a rotational shearing action in the horizontal direction to preliminarily crush the denitration catalyst; the second crushing blades 251 rotate synchronously with the rotating rod 212 to perform secondary crushing on the material passing through the filter screen 24.

[0033] Refer to Figure 2 and Figure 3 , the air blowing assembly 3 includes an airbag 31, a limiting ring 32, a spray head 33, a first connecting pipe 34 and a second connecting pipe 35. The airbag 31 is vertically arranged and is circular. The inside of the airbag 31 is hollow and filled with gas. The airbag 31 is located below the second crushing blades 251, and the bottom end is fixedly connected to the screening mesh 26. The limiting ring 32 is horizontally arranged and is circular. The limiting ring 32 is located below the second crushing part 25 and is fixedly connected to the top end of the airbag 31. The outer side wall of the limiting ring 32 is fixedly connected to the inner side wall of the crushing barrel 1. The spray head 33 is fixedly arranged on the inner side wall of the limiting ring 32 and is inclined upward from the side far away from the second crushing blades 251 to the side close to the second crushing blades 251. The first connecting pipe 34 is in the shape of a circular tube, and both ends are respectively communicated with the airbag 31 and the spray head 33. A first one-way valve 341 is installed on the first connecting pipe 34. The spray head 33, the first connecting pipe 34 and the first one-way valve 341 are all provided with a plurality of them and are arranged along the circumference of the crushing barrel 1. The second connecting pipe 35 is in the shape of a circular tube. One end of the second connecting pipe 35 is communicated with the airbag 31, and the other end penetrates outside the crushing barrel 1. A second one-way valve 351 is installed on the second connecting pipe 35.

[0034] Reference Figure 2 and Figure 4 As shown in FIGS. Figure 2 and Figure 4 , the driving assembly 4 includes an external thread sleeve 41, an adjusting telescopic rod 42, a driving telescopic rod 43, and a third connecting pipe 44. The external thread sleeve 41 is vertically arranged and sleeved on the rotating rod 212. The outer surface of the external thread sleeve 41 is a reciprocating thread. The external thread sleeve 41 is fixedly connected to the rotating rod 212 and is in threaded connection with the screening mesh 26. The adjusting telescopic rod 42 is vertically arranged, and its fixed end is fixedly connected to the inner bottom wall of the crushing barrel 1. The movable end of the adjusting telescopic rod 42 is fixedly connected to the screening mesh 26. The rod chamber of the adjusting telescopic rod 42 is filled with liquid. A spring 421 is vertically arranged in the rodless chamber of the adjusting telescopic rod 42. The two ends of the spring 421 are respectively fixedly connected to the rodless chamber and the rod chamber of the adjusting telescopic rod 42. The spring 421 is in a compressed state. The driving telescopic rod 43 is vertically arranged, and its fixed end is fixedly connected to the top end of the filter net 24. The rod chamber of the driving telescopic rod 43 is filled with liquid. The top end of the movable end of the driving telescopic rod 43 is located in the limit sliding groove 231. The movable end of the driving telescopic rod 43 is in circumferential sliding connection with the connecting ring 23 along the axis of the crushing barrel 1. The third connecting pipe 44 is in a circular tubular shape, and one end thereof is communicated with the rod chamber of the adjusting telescopic rod 42, and the other end of the third connecting pipe 44 is communicated with the rod chamber of the driving telescopic rod 43.

[0035] When the denitration catalyst is crushed, the rotation of the rotating rod 212 drives the external thread sleeve 41 to rotate synchronously. The threaded engagement between the external thread sleeve 41 and the screening mesh 26 converts the rotational motion into the upward movement of the screening mesh 26. The screening mesh 26 squeezes the airbag 31, and the gas in the airbag 31 is unidirectionally transported to the nozzle 33 through the first connecting pipe 34 and the first one-way valve 341 to complete the air flow purge. When the screening mesh 26 moves upward, the spring 421 in the adjusting telescopic rod 42 is reset due to the release of the compression force, and the movable end of the adjusting telescopic rod 42 extends. The liquid in the rod chamber of the adjusting telescopic rod 42 flows through the third connecting pipe 44 into the rod chamber of the driving telescopic rod 43, so that the volume of the rod chamber of the driving telescopic rod 43 increases, and the movable end of the driving telescopic rod 43 contracts. The connecting ring 23 drives the first crushing blade 223 to slide downward along the guiding groove 2121, so that the height of the first crushing blade 223 in the crushing barrel 1 is easy to adjust. When the crushing work of the denitration catalyst is completed, the motor 211 rotates in reverse, so that the screening mesh 26 moves downward to reset. The airbag 31 sucks in air from the outside through the second connecting pipe 35 and the second one-way valve 351 for replenishment. The screening mesh 26 squeezes the movable end of the adjusting telescopic rod 42, so that the movable end of the driving telescopic rod 43 extends, thereby making it easy for the first crushing blade 223 to reset.

[0036] The implementation principle of the crushing device for the denitration catalyst in the embodiment of the present application is as follows: When the denitration catalyst is crushed, the motor 211 drives the rotating rod 212 to rotate. The limiting cooperation between the guiding block 222 and the guiding groove 2121 causes the driving ring 221 to rotate synchronously with the rotating rod 212, driving the first crushing blade 223 to form a rotational shearing effect in the horizontal direction to initially crush the denitration catalyst. The second crushing blade 251 rotates synchronously with the rotating rod 212 to perform secondary crushing on the material passing through the filter screen 24.

[0037] The rotating rod 212 drives the external thread sleeve 41 to rotate synchronously, causing the screening mesh 26 to move upward. The screening mesh 26 squeezes the airbag 31, and the gas in the airbag 31 is unidirectionally transported through the first connecting pipe 34 and the first one-way valve 341 to the nozzle 33 to complete the air flow purge. When the screening mesh 26 moves upward, the spring 421 resets, causing the movable end 42 of the adjusting telescopic rod to extend and the movable end 43 of the driving telescopic rod to contract. The connecting ring 23 drives the first crushing blade 223 to slide downward, thereby adjusting the height of the first crushing blade 223.

[0038] When the crushing of the denitration catalyst is completed, the motor 211 rotates in reverse, the rotating rod 212 drives the external thread sleeve 41 to rotate, the external thread sleeve 41 drives the screening mesh 26 to move downward, the airbag 31 resets, the airbag 31 inhales air for replenishment through the second connecting pipe 35, the screening mesh 26 squeezes the movable end of the adjusting telescopic rod 42, causing the movable end of the driving telescopic rod 43 to extend, so that the first crushing blade 223 resets, facilitating the reuse of the equipment.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A denitration catalyst crushing device, characterized in that: The invention comprises a crushing barrel (1), a crushing assembly (2), an air blowing assembly (3) and a driving assembly (4); the crushing barrel (1) is arranged vertically and has a feeding pipe (11) at the top; a discharge pipe (12) is arranged at the bottom of the crushing barrel (1), and a butterfly valve (121) is fixedly installed on the discharge pipe (12); the crushing assembly (2) is located in the crushing barrel (1) and is used to crush the denitration catalyst; the crushing assembly (2) comprises a driving part (21), a first crushing part (22), a filter screen (24), a second crushing part (25) and a screening screen (26); the driving part (21) is located on the crushing barrel (1) and is used to drive the first crushing part (22) and the second crushing part (25) to move the first crushing part (22) and the second crushing part (26) to move the first crushing part (22) and the second crushing part (26) to move the first crushing part (22) and the second crushing part (25 ... The first crushing part (22) is located inside the crushing barrel (1) and is used for initially crushing the denitration catalyst; the filter screen (24) is located below the first crushing part (22) and is fixedly connected to the crushing barrel (1); the second crushing part (25) is located below the filter screen (24) and is used for secondary crushing of the initially crushed denitration catalyst; the screening screen (26) is located below the second crushing part (25); the blowing component (3) is located inside the crushing barrel (1) and is used for blowing the secondary crushed denitration catalyst; the driving component (4) is located inside the crushing barrel (1) and is used for driving the blowing component (3) to work.

2. A denitration catalyst crushing device according to claim 1, characterized in that: The driving part (21) comprises a motor (211) and a rotating rod (212); the motor (211) is vertically arranged and located at the bottom end of the crushing barrel (1); the rotating rod (212) is vertically arranged in the crushing barrel (1) and is fixedly connected to the output shaft of the motor (211); a guide groove (2121) is provided on the rotating rod (212); the first crushing part (22) comprises a driving ring (221), a guiding block (222) and a first crushing blade (223); the driving ring (221) is sleeved on the rotating rod (212); the guiding block (222) is fixedly connected to the driving ring (221); The guide block (222) is located in the guide groove (2121) and is slidably connected to the rotating rod (212); the first crushing blade (223) is arranged horizontally and is fixedly connected to the driving ring (221); the crushing assembly (2) further comprises a connecting ring (23); the connecting ring (23) is arranged horizontally and is fixedly connected to the first crushing blade (223); the outer side wall of the connecting ring (23) contacts the inner side wall of the crushing barrel (1); the second crushing part (25) comprises a second crushing blade (251); the second crushing blade (251) is arranged horizontally and is fixedly connected to the rotating rod (212).

3. A denitration catalyst crushing device according to claim 2, characterized in that: The blowing assembly (3) comprises an air bag (31), a limiting ring (32), a nozzle (33) and a first connecting pipe (34); the air bag (31) is hollow inside and filled with gas; the air bag (31) is located below the second crushing part (25), and the bottom end is fixedly connected to the screening net (26); the limiting ring (32) is located at the top of the air bag (31) and is fixedly connected to the air bag (31); the limiting ring (32) is located below the second crushing part (25), and the outer wall is fixedly connected to the inner wall of the crushing barrel (1); The nozzle (33) is fixedly arranged on the inner side wall of the limiting ring (32), the nozzle (33) is arranged obliquely, and the two ends of the first connecting pipe (34) are respectively connected to the airbag (31) and the nozzle (33); the crushing barrel (1) is provided with a limiting groove (14), the screening net (26) is fixedly connected to a limiting block (261), the limiting block (261) is located in the limiting groove (14), and is slidably connected to the crushing barrel (1); the driving component (4) is used to drive the screening net (26) to squeeze the airbag (31).

4. A denitration catalyst crushing device according to claim 3, characterized in that: The blowing assembly (3) further comprises a second connecting pipe (35), one end of the second connecting pipe (35) being in communication with the air bag (31), and the other end of the second connecting pipe (35) being passed through the outside of the crushing barrel (1), a first one-way valve (341) being fixedly mounted on the first connecting pipe (34), and a second one-way valve (351) being fixedly mounted on the second connecting pipe (35).

5. A denitration catalyst crushing device according to claim 4, characterized in that: The spray head (33), the first connecting pipe (34) and the first one-way valve (341) are arranged at intervals along the circumference of the crushing barrel (1).

6. A denitration catalyst crushing device according to claim 3, characterized in that: The driving assembly (4) comprises an externally threaded sleeve (41), the externally threaded sleeve (41) being sleeved on the rotating rod (212) and fixedly connected to the rotating rod (212), and the externally threaded sleeve (41) being threadedly connected to the screening net (26).

7. A denitration catalyst crushing device according to claim 6, characterized in that: The driving assembly (4) further comprises an adjusting telescopic rod (42), a driving telescopic rod (43) and a third connecting pipe (44); the adjusting telescopic rod (42) is vertically arranged, and a fixed end is fixedly connected to the inner bottom wall of the crushing barrel (1); a movable end of the adjusting telescopic rod (42) is fixedly connected to the screening net (26); a rod cavity of the adjusting telescopic rod (42) is filled with liquid; a spring (421) is vertically arranged in the rodless cavity of the adjusting telescopic rod (42), and two ends of the spring (421) are respectively connected to the adjusting telescopic rod (42). The rodless cavity and the rod cavity of the adjusting telescopic rod (42) are fixedly connected, and the spring (421) is in a compressed state; the driving telescopic rod (43) is vertically arranged, and the fixed end is fixedly connected to the top of the filter screen (24); the rod cavity of the driving telescopic rod (43) is filled with liquid, and the movable end of the driving telescopic rod (43) is slidably connected to the connecting ring (23); one end of the third connecting tube (44) is connected to the rod cavity of the adjusting telescopic rod (42), and the other end is connected to the rod cavity of the driving telescopic rod (43).

8. A denitration catalyst crushing device according to claim 7, characterized in that: A limiting sliding groove (231) is provided at the bottom end of the connecting ring (23), and the top end of the movable end of the driving telescopic rod (43) is located in the limiting sliding groove (231).

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