A performance detection device for blast furnace gas purifying agent

Abstract

The application discloses a performance detection device for blast furnace gas purifying agent, and relates to the technical field of gas purification. The device comprises a box body, a detection instrument is fixedly installed on the outer wall of the box body, a reciprocating screw rod is rotationally connected to the axial center of the inner wall of the box body, a cleaning assembly is arranged on the inner wall of the box body for cleaning, a collecting assembly is arranged at the bottom end of the box body for collecting dust, an air inlet pipe is fixedly connected to the eccentric position of the top end of the box body, and the bottom end of the air inlet pipe is fixedly connected with a smoke outlet pipe extending into the box body. The dust adhered to the cleaning block of the cleaning assembly is scraped and guided along the inner wall of the box body to the lower side, and the scraped dust is collected by the collecting assembly, so that the dust adhered or accumulated in the box body after long-time use of the device is prevented from interfering with the subsequent detection, and the accuracy of the detection result is improved to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of coal gas purification technology, specifically to a performance testing device for blast furnace coal gas purifiers. Background Technology

[0002] Blast furnace gas is a combustible gas produced as a byproduct of blast furnace ironmaking. It has a large output and wide range of uses, serving as fuel for power plant boilers, hot blast stoves in ironmaking plants, and heating furnaces in steelmaking plants. However, in addition to inorganic sulfur compounds such as H2S and SO2, blast furnace gas also contains a large amount of organic sulfur compounds, primarily COS and CS2. After combustion, the SO2 content in the flue gas can reach 40–250 mg / m3. If emitted directly without treatment, it will cause serious air pollution and fail to meet national emission standards. Therefore, blast furnace gas needs to be purified before use to remove sulfur compounds. Removing organic sulfur and other harmful gases from blast furnace gas is the main task in ensuring its compliance with emission standards.

[0003] In existing technologies, blast furnace gas needs to be purified by a purifying agent before it can be put into use. Different types of purifying agents have different purification efficiencies on blast furnace gas. Therefore, it is necessary to test the purified blast furnace gas to evaluate the purification effect of the purifying agent and provide a basis for the subsequent selection and application of purifying agents. In existing devices, because blast furnace gas contains a lot of dust, when testing the blast furnace gas treated with the purifying agent for a long time, a large amount of dust may adhere to the inner wall of the device. If it is not cleaned in time, this residual dust may interfere with the subsequent testing process and thus affect the accuracy of the test results. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a performance testing device for blast furnace gas purifier, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a performance testing device for blast furnace gas purifier, comprising a housing, a testing instrument fixedly installed on the outer wall of the housing, a reciprocating screw rotatably connected to the axis of the inner wall of the housing, a cleaning component for cleaning the inner wall of the housing, a dust collection component for collecting dust at the bottom of the housing, an air inlet pipe fixedly connected to the eccentric position of the top of the housing, a smoke outlet pipe extending into the interior of the housing fixedly connected to the bottom of the air inlet pipe, and a spray component extending into the interior of the housing on the outer wall of the top of the housing.

[0006] Preferably, the cleaning component includes a one-way bearing threadedly connected to a reciprocating lead screw, a lifting block connected to the outer wall of the one-way bearing, a rotating ring rotatably connected to the outer wall of the lifting block, four sets of connecting blocks symmetrically fixedly connected to the outer wall of the rotating ring, a sliding groove opened on the surface of the connecting block, a moving block slidably connected to the inner wall of the sliding groove, and a cleaning block for cleaning the inner wall of the box fixedly connected to the lower surface of one end of the moving block.

[0007] Preferably, each of the four sets of connecting blocks has two sets of positioning grooves symmetrically formed on its outer wall. Two sets of connecting rods are symmetrically fixedly connected to the upper surface of the cleaning block. The end of the connecting rod away from the cleaning block is slidably connected to the inner wall of the positioning groove. A dovetail block is fixedly connected at the center of the upper surface of the cleaning block. A dovetail groove matching the dovetail block is formed on the inner wall of the sliding groove.

[0008] Preferably, the surface of the movable block is provided with a through groove, a first inclined block is fixedly connected to the inner wall of one end of the through groove, a second inclined block is fixedly connected to the end of the inner wall of the through groove away from the first inclined block, four sets of first pressing blocks are fixedly connected to the top of the inner wall of the box, multiple sets of second pressing blocks are fixedly connected to the bottom of the inner wall of the box, protrusions are fixedly connected to both sides of the surface of the movable block away from the cleaning block, and a first groove and a second groove matching the protrusions are provided on both sides of the inner wall of the sliding groove.

[0009] Preferably, the surface of the lifting block has an opening, the inner wall of the opening is slidably connected to a limiting rod that is fixedly connected to the inner wall of the box, one side surface of the limiting rod has a guide groove, and the inner wall of the rotating ring is fixedly connected to a guide rod that extends to the inner wall of the guide groove.

[0010] Preferably, the spray assembly includes a liquid storage tank fixedly connected to the outer wall of the box, a fixed pipe extending to the inner wall of the box is fixedly connected to the top of the liquid storage tank, a damping knob is rotatably connected to the output end of the fixed pipe, a spray pipe located inside the box is fixedly connected to the bottom end of the damping knob, and the damping knob is connected to the box through a torsion spring.

[0011] Preferably, a fixing block is fixedly sleeved on the outer wall of the top end of the reciprocating lead screw, and two sets of push rods are symmetrically fixedly connected to the outer wall of the fixing block. A stop rod is fixedly connected to the outer wall of each of the two sets of damping knobs, and the push rod contacts the stop rod during rotation.

[0012] Preferably, the collection component includes a fan fixedly connected to the outer wall of the box, the fan being located below the liquid storage tank, a dust collection ring fixedly connected to the bottom of the box, a suction pipe fixedly connected to the outer wall of the fan, a connecting pipe fixedly connected to the output end of the suction pipe, and the connecting pipe communicating with the dust collection ring.

[0013] Preferably, a fixing ring is fixedly connected to the top of the inner wall of the dust collection ring, the surface of the fixing ring is provided with a first groove, and a rotating plate is fixedly connected to the bottom of the outer wall of the reciprocating screw above the fixing ring, the surface of the rotating plate is provided with a second groove that matches the first groove.

[0014] In summary, the present invention has the following main beneficial effects:

[0015] 1. This invention uses a reciprocating screw to drive the cleaning component to move up and down along the inner wall of the chamber. The cleaning block in the cleaning component cleans the inner wall of the chamber. With the help of the guide rod and guide groove, the cleaning block is driven to rotate periodically during the up and down movement, which facilitates comprehensive cleaning of the inner wall of the chamber and significantly improves the comprehensiveness and efficiency of cleaning. During the upward movement, the cleaning block remains in a non-contact state with the inner wall of the chamber, which effectively avoids the re-adhesion of cleaned dust. During the downward cleaning process, the cleaning block forms a tight fit with the inner wall and guides the attached dust down the inner wall of the chamber through directional scraping. At the same time, the collection component collects the scraped dust, which prevents dust from adhering or accumulating inside the chamber after long-term use of the device and interfering with subsequent testing, thus improving the accuracy of the test results to a certain extent.

[0016] 2. This invention achieves directional transportation of blast furnace gas within the casing through an inlet pipe and an outlet pipe. The outlet pipe employs a variable diameter structure with a wider inlet and narrower outlet. Based on fluid mechanics principles, the flow velocity is significantly increased when the gas flows through the contraction section, accelerating the filling speed of the blast furnace gas within the casing and shortening the detection time cycle to a certain extent, effectively improving overall work efficiency. During gas transportation, a purifying agent is precisely sprayed into the casing through a spray pipe, forming an atomized coverage area, which is then driven and fixed by a reciprocating screw. The push rod on the ring performs periodic circular motion. When the push rod contacts the stop rod on the damping knob, the interaction force between the two drives the damping knob to rotate, which in turn drives the spray pipe to rotate on a fixed axis within the box. When the push rod disengages from the stop rod via the screw drive, the damping knob rotates in the opposite direction under the elastic reset action of the torsion spring, causing the spray pipe to return to its initial position. This allows the spray pipe to oscillate back and forth, facilitating the thorough mixing of blast furnace gas and purifying agent, increasing the reaction rate between the purifying agent and blast furnace gas, and further improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a first-view perspective three-dimensional schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a second-view perspective three-dimensional schematic diagram of the overall structure of the present invention;

[0019] Figure 3This is a bottom-view perspective view of the internal structure of the box of the present invention;

[0020] Figure 4 This is a top-view perspective view of part of the structure of the present invention;

[0021] Figure 5 This is a top-view perspective view of the cleaning component of the present invention;

[0022] Figure 6 This is a three-dimensional disassembly diagram of a portion of the cleaning component of the present invention;

[0023] Figure 7 This is a cross-sectional perspective view of the cleaning block of the present invention;

[0024] Figure 8 This is a bottom-view three-dimensional structural diagram of the spray pipe of the present invention;

[0025] Figure 9 This is a top view of the spray assembly of the present invention.

[0026] Figure 10 This is a three-dimensional schematic diagram of the disassembled structure of the components collected in this invention;

[0027] Figure 11 For the present invention Figure 5 A schematic diagram of the partial structure at point A in the middle.

[0028] In the diagram: 1. Housing; 11. Inlet pipe; 12. Exhaust pipe; 2. Testing instrument; 31. Fan; 32. Suction pipe; 33. Connecting pipe; 34. Dust collection ring; 35. Fixing ring; 36. First slot; 37. Rotating plate; 38. Second slot; 41. Liquid storage tank; 42. Fixing pipe; 43. Spray pipe; 44. Damping knob; 45. Push rod; 46. Fixing block; 47. Push rod; 5. Reciprocating screw. 61. Lifting block; 611. Opening; 62. One-way bearing; 63. Rotating ring; 631. Guide rod; 64. Connecting block; 641. Slide groove; 65. Moving block; 651. Through groove; 652. Protrusion; 66. Cleaning block; 661. Dovetail block; 67. First inclined block; 68. Second inclined block; 69. Connecting rod; 7. First extrusion block; 8. Second extrusion block; 9. Limiting rod; 91. Guide groove. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of the present invention will now be described.

[0031] A performance testing device for blast furnace gas purifier, such as Figure 1 - Figure 11 As shown, it includes a box 1, and a detection instrument 2 is fixedly installed on the outer wall of the box 1. After the blast furnace gas is purified, the purification effect of the blast furnace gas is detected by the detection instrument 2, and the purification performance of the purifying agent can be calculated.

[0032] The inner wall of the housing 1 is equipped with a cleaning component for cleaning it. A reciprocating screw 5 is rotatably connected to the axis of the inner wall of the housing 1. A motor connected to the reciprocating screw 5 is fixedly installed at the center of the top of the outer wall of the housing 1. The cleaning component includes a one-way bearing 62 threadedly connected to the reciprocating screw 5. A lifting block 61 is connected to the outer wall of the one-way bearing 62. After the motor is started, the motor drives the reciprocating screw 5 to rotate forward, which drives the one-way bearing 62 to move up and down. At this time, the one-way bearing 62 drives the lifting block 61 to move up and down on the outer wall of the reciprocating screw 5. A rotating ring 63 is rotatably connected to the outer wall of the lifting block 61. Four sets of connecting blocks 64 are symmetrically fixedly connected to the outer wall of the rotating ring 63. A sliding groove 641 is opened on the surface of the connecting block 64. A moving block 65 is slidably connected to the inner wall of the housing 1. A cleaning block 66 for cleaning the inner wall of the housing 1 is fixedly connected to one end of the lower surface of the moving block 65. The dust attached to the inner wall of the housing 1 can be cleaned by the cleaning block 66.

[0033] The outer walls of the four sets of connecting blocks 64 are symmetrically provided with two sets of positioning grooves. The upper surface of the cleaning block 66 is symmetrically fixed with two sets of connecting rods 69. The end of the connecting rod 69 away from the cleaning block 66 is slidably connected to the inner wall of the positioning groove. The positioning groove and the connecting rod 69 can limit the position of the cleaning block 66 and support the cleaning block 66 at the same time.

[0034] A dovetail block 661 is fixedly connected to the center of the upper surface of the cleaning block 66. The inner wall of the slide 641 is provided with a dovetail groove that matches the dovetail block 661. By setting the dovetail block 661 and the dovetail groove, the cleaning block 66 can be limited, so that the cleaning block 66 can move parallel to the inner wall of the slide 641.

[0035] The surface of the movable block 65 has a through groove 651. A first inclined block 67 is fixedly connected to the inner wall of one end of the through groove 651. A second inclined block 68 is fixedly connected to the inner wall of the through groove 651 away from the first inclined block 67. Four sets of first pressing blocks 7 are fixedly connected to the top of the inner wall of the box 1. When the first pressing block 7 presses the second inclined block 68, the cleaning block 66 is tightly attached to the inner wall of the box 1. Multiple sets of second pressing blocks 8 are fixedly connected to the bottom of the inner wall of the box 1. After the second pressing block 8 presses the first inclined block 67, the cleaning block 66 is separated from the inner wall of the box 1. At this time, the cleaning block 66 is not in contact with the box 1. Both sides of the surface of the movable block 65 away from the cleaning block 66 are fixedly connected to protrusions 652. The inner walls of both sides of the sliding groove 641 are provided with first grooves and second grooves that match the protrusions 652. The position of the cleaning block 66 can be fixed by setting the protrusions 652 and the first grooves and second grooves.

[0036] The lifting block 61 has an opening 611 on its surface. A limiting rod 9, which is fixedly connected to the inner wall of the box 1, is slidably connected to the inner wall of the opening 611. A guide groove 91 is provided on one side of the limiting rod 9. A guide rod 631 extending to the inner wall of the guide groove 91 is fixedly connected to the inner wall of the rotating ring 63. When the lifting block 61 moves, the rotating ring 63 can be driven to rotate through the cooperation of the guide rod 631 and the guide groove 91, thereby facilitating the rotation of the cleaning block 66 during movement and thoroughly cleaning the inner wall of the box 1.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 , Figure 10 It can be seen that an air inlet pipe 11 is fixedly connected at the eccentric position at the top of the box 1, and a smoke outlet pipe 12 extending into the interior of the box 1 is fixedly connected at the bottom of the air inlet pipe 11. The blast furnace gas is discharged into the interior of the box 1 through the air inlet pipe 11 and the smoke outlet pipe 12. A spray assembly extending into the interior of the box 1 is provided on the outer wall at the top of the box 1.

[0038] The spray assembly includes a liquid storage tank 41 fixedly connected to the outer wall of the housing 1. A fixed pipe 42 extending to the inner wall of the housing 1 is fixedly connected to the top of the liquid storage tank 41. A damping knob 44 is rotatably connected to the output end of the fixed pipe 42. A spray pipe 43 located inside the housing 1 is fixedly connected to the bottom end of the damping knob 44. The damping knob 44 is connected to the housing 1 through a torsion spring. The purifying agent is sprayed onto the inner wall of the housing 1 through the spray pipe 43, thereby facilitating the purification of blast furnace gas.

[0039] A fixing block 46 is fixedly sleeved on the outer wall of the top of the reciprocating screw 5. Two sets of push rods 47 are symmetrically fixedly connected to the outer wall of the fixing block 46. A stop rod 45 is fixedly connected to the outer wall of each of the two sets of damping knobs 44. The push rod 47 contacts the stop rod 45 during rotation. When the motor drives the reciprocating screw 5 to reverse, the push rod 47, together with the stop rod 45 and the damping knob 44, drives the spray pipe 43 to rotate. When the push rod 47 and the stop rod 45 are not in contact, the spray pipe 43 is reset under the action of the torsion spring, which facilitates the reciprocating rotation of the spray pipe 43 and improves the mixing efficiency of the purifying agent and the blast furnace gas.

[0040] See Figure 1 , Figure 2 , Figure 4 , Figure 10 It is known that the bottom of the box 1 is equipped with a dust collection component, which includes a fan 31 fixedly connected to the outer wall of the box 1. The fan 31 is located below the liquid storage tank 41. A dust collection ring 34 is fixedly connected to the bottom of the box 1. A suction pipe 32 is fixedly connected to the outer wall of the fan 31. A connecting pipe 33 is fixedly connected to the output end of the suction pipe 32. The connecting pipe 33 is connected to the dust collection ring 34. The dust inside the dust collection ring 34 can be adsorbed and collected by the suction pipe 32 and the connecting pipe 33 to prevent it from affecting the subsequent test results.

[0041] A fixing ring 35 is fixedly connected to the top of the inner wall of the dust collection ring 34. A first groove 36 is opened on the surface of the fixing ring 35. A rotating plate 37 is fixedly connected to the bottom of the outer wall of the reciprocating screw 5 above the fixing ring 35. A second groove 38 matching the first groove 36 is opened on the surface of the rotating plate 37. When the reciprocating screw 5 drives the cleaning component to rotate forward, when the cleaning block 66 moves to the bottom of the inner wall of the box 1, the first groove 36 just matches the second groove 38, so that the dust scraped off can be adsorbed and collected in conjunction with the connecting pipe 33.

[0042] The working principle of this invention is as follows: When it is necessary to test the effect of the purifying agent, the blast furnace gas is discharged into the box 1 through the air inlet pipe 11 and the smoke outlet pipe 12. Since the smoke outlet pipe 12 is designed with "wide inlet and narrow outlet", it is convenient to quickly input the blast furnace gas into the box 1, thereby improving the working efficiency.

[0043] As blast furnace gas enters the housing 1, the purifying agent inside the liquid storage tank 41 is sprayed out through the spray pipe 43 via the fixed pipe 42. Simultaneously, the motor is started, driving the reciprocating screw 5 to reverse. Under the action of the one-way bearing 62, the lifting block 61 does not move up or down. While the reciprocating screw 5 reverses, the fixed block 46 drives the push rod 47 to rotate. During rotation, the push rod 47 contacts the abutment rod 45, which, in turn, cooperates with the damping knob 44 to drive the spray pipe 43 to rotate. When the abutment rod 45 separates from the push rod 47... The damping knob 44 is reset under the action of the torsion spring, which can drive the spray pipe 43 to rotate back and forth inside the box 1, so that the purifying agent and blast furnace gas are fully mixed and the blast furnace gas is purified. After a certain amount of blast furnace gas and purifying agent enter the box 1, wait for the blast furnace gas and purifying agent to react and purify the blast furnace gas. After the purification is completed, the blast furnace gas inside the box 1 is tested by the detection instrument 2, and the purification performance of the purifying agent can be calculated so as to evaluate the purification effect of the purifying agent.

[0044] When the test is completed and the next set of purifiers needs to be tested, the purified blast furnace gas inside the box 1 is discharged through the flue gas outlet, and then the motor is started. The motor drives the reciprocating screw 5 to rotate forward. The reciprocating screw 5 drives the lifting block 61 to move vertically inside the box 1 through the limit rod 9. When the lifting block 61 descends, the cleaning block 66 is attached to the inner wall of the box 1 to scrape off the dust and impurities attached to the inner wall of the box 1.

[0045] As the lifting block 61 moves the cleaning block 66, the guide rod 631 passes through the inner wall of the guide groove 91 on the limiting rod 9, and the rotating ring 63 rotates back and forth under the action of the guide rod 631, thereby driving the cleaning block 66 to move vertically and rotate back and forth to clean the inner wall of the box 1.

[0046] When the lifting block 61 moves from the top to the bottom of the inner wall of the box 1, the second pressing block 8 just enters the inner wall of the through groove 651. Under the action of the first inclined block 67, the moving block 65 can be pushed to move in the inner wall of the slide groove 641, so that the protrusion 652 moves from the first groove to the inner wall of the second groove. At this time, the cleaning block 66 does not contact the inner wall of the box 1.

[0047] While the motor is rotating forward, the fan 31 starts, and the rotating plate 37 rotates under the drive of the reciprocating screw 5, so that the second slot 38 is aligned with the first slot 36 on the fixed ring 35, and then the dust scraped off is adsorbed and collected through the dust suction pipe 32 and the connecting pipe 33 to prevent it from affecting the next test result.

[0048] As the reciprocating screw 5 continues to rotate, the lifting block 61 moves vertically upward under the action of the reciprocating screw 5. When the lifting block 61 moves to the top of the inner wall of the housing 1, the first pressing block 7 contacts the second inclined block 68. Under the action of the second inclined block 68, the moving block 65 is pushed to move and reset on the inner wall of the slide groove 641. The protrusion 652 moves from the inner wall of the second groove to the inner wall of the first groove, fixing the position of the cleaning block 66. At this time, the cleaning block 66 is once again in contact with the inner wall of the housing 1, which is convenient for the next cleaning, reduces the influence of residual dust on the inner wall of the housing 1 on the test results, improves the accuracy of the test results, and facilitates the next test. The contents not described in detail in this description belong to the prior art known to those skilled in the art.

[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A performance testing device for blast furnace gas purifier, comprising a housing (1), characterized in that: The outer wall of the box (1) is fixedly equipped with a testing instrument (2), the inner wall of the box (1) is rotatably connected with a reciprocating screw (5), the inner wall of the box (1) is provided with a cleaning component for cleaning it, the bottom of the box (1) is provided with a dust collection component, the top of the box (1) is fixedly connected with an air inlet pipe (11) at an eccentric position, the bottom of the air inlet pipe (11) is fixedly connected with a smoke outlet pipe (12) extending into the inside of the box (1), and the top outer wall of the box (1) is provided with a spray component extending into the inside of the box (1). The cleaning assembly includes a one-way bearing (62) threadedly connected to a reciprocating lead screw (5). A lifting block (61) is connected to the outer wall of the one-way bearing (62). A rotating ring (63) is rotatably connected to the outer wall of the lifting block (61). Four sets of connecting blocks (64) are symmetrically fixed to the outer wall of the rotating ring (63). A sliding groove (641) is provided on the surface of the connecting block (64). A moving block (65) is slidably connected to the inner wall of the sliding groove (641). A cleaning block (66) for cleaning the inner wall of the box (1) is fixedly connected to the lower surface of one end of the moving block (65). The surface of the moving block (65) is provided with a through groove (651). A first inclined block (67) is fixedly connected to the inner wall of one end of the through groove (651). A second inclined block (68) is fixedly connected to the end of the inner wall of the through groove (651) away from the first inclined block (67). Four sets of first extrusion blocks (7) are fixedly connected to the top of the inner wall of the box (1). Multiple sets of second extrusion blocks (8) are fixedly connected to the bottom of the inner wall of the box (1). Both sides of the moving block (65) away from the cleaning block (66) are fixedly connected with protrusions (652). The inner walls of both sides of the slide groove (641) are provided with a first groove and a second groove that match the protrusions (652). The spray assembly includes a liquid storage tank (41) fixedly connected to the outer wall of the box (1). The top of the liquid storage tank (41) is fixedly connected to a fixed pipe (42) extending to the inner wall of the box (1). The output end of the fixed pipe (42) is rotatably connected to a damping knob (44). The bottom end of the damping knob (44) is fixedly connected to a spray pipe (43) located inside the box (1). The damping knob (44) is connected to the box (1) through a torsion spring. A fixing block (46) is fixedly sleeved on the outer wall of the top end of the reciprocating screw (5). Two sets of push rods (47) are symmetrically fixedly connected to the outer wall of the fixing block (46). A stop rod (45) is fixedly connected to the outer wall of both sets of damping knobs (44). The push rod (47) contacts the stop rod (45) during rotation.

2. The performance testing device for blast furnace gas purifier according to claim 1, characterized in that: The outer walls of the four sets of connecting blocks (64) are symmetrically provided with two sets of positioning grooves. The upper surface of the cleaning block (66) is symmetrically fixedly connected with two sets of connecting rods (69). The end of the connecting rod (69) away from the cleaning block (66) is slidably connected to the inner wall of the positioning groove. The center position of the upper surface of the cleaning block (66) is fixedly connected with a dovetail block (661). The inner wall of the slide groove (641) is provided with a dovetail groove that matches the dovetail block (661).

3. The performance testing device for blast furnace gas purifier according to claim 1, characterized in that: The lifting block (61) has an opening (611) on its surface. The inner wall of the opening (611) is slidably connected to a limiting rod (9) that is fixedly connected to the inner wall of the box (1). A guide groove (91) is provided on one side of the limiting rod (9). The inner wall of the rotating ring (63) is fixedly connected to a guide rod (631) that extends to the inner wall of the guide groove (91).

4. The performance testing device for blast furnace gas purifier according to claim 1, characterized in that: The collection assembly includes a fan (31) fixedly connected to the outer wall of the box (1). The fan (31) is located below the liquid storage tank (41). A dust collection ring (34) is fixedly connected to the bottom of the box (1). A suction pipe (32) is fixedly connected to the outer wall of the fan (31). A connecting pipe (33) is fixedly connected to the output end of the suction pipe (32). The connecting pipe (33) is connected to the dust collection ring (34).

5. The performance testing device for blast furnace gas purifier according to claim 4, characterized in that: A fixing ring (35) is fixedly connected to the top of the inner wall of the dust collection ring (34). A first groove (36) is provided on the surface of the fixing ring (35). A rotating plate (37) is fixedly connected to the bottom of the outer wall of the reciprocating screw (5) above the fixing ring (35). A second groove (38) matching the first groove (36) is provided on the surface of the rotating plate (37).

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