A crushing and processing device for furfural raw materials

Abstract

A crushing and processing device for furfural raw materials comprises a feeding hopper, a primary crushing mechanism, a secondary crushing mechanism, a screening and discharging mechanism and a control device which are sealed and installed from top to bottom; a coarse mesh screen and a medium mesh screen are respectively arranged at the bottom of the primary crushing mechanism and the secondary crushing mechanism; the screening and discharging mechanism is used to further screen the raw materials that have reached the secondary crushing particle size, and to discharge the raw materials that have reached the required discharging particle size and the raw materials that have not reached the required discharging particle size into a discharging box and an unqualified material box arranged on the screening and discharging mechanism respectively; the control device is used to control the operation of the entire crushing and processing device; the present invention enables the raw materials to be crushed to be screened in a coarse, medium and fine step in an assembly line manner in the crushing process, effectively solving the problems of long crushing time, incomplete crushing and large crushing resistance caused by repeated crushing by a single crushing mechanism in the background technology, greatly improving the work efficiency and reducing the energy consumption cost.

Description

Technical Field

[0001] The invention relates to the technical field of crushing and processing equipment, and in particular to crushing and processing equipment for furfural raw materials. Background Art

[0002] Furfural is an industrial chemical that can be extracted from a variety of agricultural byproducts, including corn cobs, corn stalks, wheat bran and sawdust.

[0003] In the process of furfural processing, the furfural raw materials need to be crushed first. However, the existing crushing processing equipment often has a disadvantage, namely: the crushing mechanism is single. In this case, in order to achieve the required particle size of the discharging material, it is usually only possible to crush repeatedly; but even so, since the crushed and uncrushed raw materials are mixed together, the uncrushed raw materials are often unable to be completely captured by the crushing blades. At the same time, as the crushed raw materials are further crushed, the crushing resistance of the crushing mechanism is further aggravated, which ultimately makes the existing crushing processing equipment not only have a long crushing processing time and incomplete crushing, but also high energy consumption and low efficiency.

[0004] Therefore, it is necessary to invent a device that can efficiently and thoroughly crush furfural raw materials. Summary of the invention

[0005] In view of the above problems, the present invention proposes a crushing and processing device for furfural raw materials, and the technical scheme adopted is as follows:

[0006] A crushing and processing equipment for furfural raw materials, characterized in that it comprises a feeding hopper, a primary crushing mechanism, a secondary crushing mechanism, a screening and discharging mechanism and a control device which are installed in a closed manner from top to bottom; a coarse mesh screen and a medium mesh screen are respectively provided at the bottom of the primary crushing mechanism and the secondary crushing mechanism, the coarse mesh screen is used to screen the raw materials that have reached the preliminary crushing particle size during the processing of the primary crushing mechanism into the secondary crushing mechanism, and the medium mesh screen is used to screen the raw materials that have reached the secondary crushing particle size during the processing of the secondary crushing mechanism into the screening and discharging mechanism; the screening and discharging mechanism is used to further screen the raw materials that have reached the secondary crushing particle size, and respectively discharge the raw materials that have reached the required discharging particle size and the raw materials that have not reached the required discharging particle size into a discharging box and an unqualified material box provided on the screening and discharging mechanism; the control device is used to control the operation of the entire crushing and processing equipment.

[0007] Furthermore, the primary crushing mechanism also includes a crushing bin body, a crushing blade shaft and a motor; the feed port of the crushing bin body is sealed and fixedly connected to the outlet of the feed bin hopper; the crushing blade shaft is rotatably installed in the crushing bin body and is driven to rotate by a motor fixedly installed on the crushing bin body; the coarse mesh screen is fixedly installed in the crushing bin body and is located below the crushing blade shaft.

[0008] Furthermore, the secondary crushing mechanism includes a second crushing bin body, a second crushing knife shaft and a mesh screen mechanism; the inlet of the second crushing bin body is sealed and fixedly connected with the outlet of the first crushing bin body; the second crushing knife shaft is rotatably installed in the second crushing bin body, and is connected to the output shaft of the motor one through the second pulley mechanism to achieve simultaneous operation with the first crushing knife shaft; the mesh screen mechanism includes a middle mesh screen, a driving cylinder, a fixed plate and a pushing rod; the middle mesh screen is horizontally slidably installed on the second crushing bin body and is located below the second crushing knife shaft; at least one of the pushing rods is fixedly installed at one end of the middle mesh screen through a fixing plate; the driving cylinder is coaxially fixedly connected with one end of the second crushing knife shaft away from the second pulley mechanism; the pushing rod and the driving cylinder are both located outside the second crushing bin body; a reciprocating slide is provided on the driving cylinder, the pushing rod is slidably installed in the reciprocating slide, and drives the middle mesh screen to slide horizontally back and forth on the second crushing bin body under the drive of the driving cylinder.

[0009] Furthermore, the mesh screen mechanism also includes a limit plate; the limit plate is fixedly arranged on the second outer side of the crushing bin body corresponding to the push rod, and the push rod slides horizontally in the corresponding limit plate.

[0010] Furthermore, the minimum distance between the first crushing blade shaft and the coarse mesh screen during rotation, and the minimum distance between the second crushing blade shaft and the medium mesh screen during rotation, are both no greater than 10 mm.

[0011] Furthermore, the screening and discharging mechanism also includes an alternating screening mechanism and an inspection cover;

[0012] The alternating screening mechanism comprises an alternating screening assembly, a cover assembly, a fine mesh screen, a support frame and a fan; the support frame is fixedly installed in the second crushing bin body and is located below the mesh screen mechanism; the support frame divides the second crushing bin body into two closed upper and lower channels; the discharge box is arranged below the two channels for receiving raw materials that meet the discharge particle size requirements; a fine mesh screen is movably installed in each of the channels, one end of the fine mesh screen is movably connected to the inner wall of the second crushing bin body, and the other end is movably connected to the support frame; the fine mesh screen divides the corresponding channel into two upper and lower parts; an unqualified material outlet is provided on the second crushing bin body at the position where the two fine mesh screens are connected, and is intermittently opened and closed by a cover assembly arranged on the outside of the second crushing bin body; the unqualified material box is located at the qualified material outlet position;

[0013] The alternating screening assembly comprises a baffle plate 1, a baffle plate 2, a pulley assembly, a return spring 1, a telescopic driving member and a fan; the baffle plate 1 and the baffle plate 2 are slidably mounted on the crushing bin body 2 corresponding to the top position of each channel; the pulley assembly is mounted on the outer side of the crushing bin body 2 through a support rod, and the two ends of the rope are respectively connected to the baffle plate 1 and the baffle plate 2; one end of the return spring 1 is connected to the outer side of the crushing bin body 2, and the other end is connected to the baffle plate 1; the telescopic driving member is fixedly mounted on the outer side of the crushing bin body 2, and the output end is connected to the baffle plate 2; the baffle plate 1 and the baffle plate 2 are alternately inserted into the crushing bin body 2 under the drive of the telescopic driving member, and form a screening cavity with the support frame and the corresponding fine mesh screen and cover plate assembly when inserted into the crushing bin body 2; a fan is installed in each of the screening cavities for disturbing the air in the screening cavity, thereby stirring the raw materials entering the screening cavity;

[0014] An inspection port is provided on the second powder bin body corresponding to the position of the alternating screening mechanism, and the inspection cover is tightly installed on the inspection port.

[0015] Furthermore, the alternating screening assembly also includes a support rod, a second motor and a cam; a rectangular through hole is correspondingly provided on the second crushing bin body and the support frame, and the support rod is slidably installed in the rectangular through hole left and right; the second motor is fixedly installed on the inner end of the support rod, and the output shaft is fixedly installed on the cam; a toggle frame is provided on the outer end of the support rod, and a toggle block 1 and a toggle block 2 are respectively provided on the outer ends of the baffle plate 1 and the baffle plate 2, and the toggle block 1 and the toggle block 2 push the toggle frame when the baffle plate 1 and the baffle plate 2 are alternately inserted into the second crushing bin body, thereby pushing the cam to contact the fine mesh screen on the corresponding side.

[0016] Furthermore, an opening adjustment mechanism is provided on the feed hopper; the opening adjustment mechanism includes an adjustment plate and an adjustment component, the adjustment plate is rotatably installed at the inlet of the feed hopper, and one end of the rotating shaft is fixedly connected to the adjustment component; the adjustment component is used to adjust the size of the plate opening.

[0017] Furthermore, the adjustment assembly includes an adjustment pointer, a limit pin and an adjustment handle; the adjustment pointer is fixedly connected to one end of the adjustment plate shaft and is located on the outside of the feed hopper; the limit pin is slidably mounted on the adjustment plate through a second reset spring; a number of equally spaced limit holes are provided on the outside of the feed hopper corresponding to the rotation path of the limit pin, and the limit pin is intermittently inserted into one of the limit holes; the adjustment handle is mounted on the adjustment pointer.

[0018] Furthermore, an auxiliary conveyor belt mechanism is provided in the feeding hopper, and the auxiliary conveyor belt mechanism is located below the opening adjustment mechanism, and is used for uniformly conveying the raw materials entering the feeding hopper.

[0019] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0020] The present invention adopts the matching design of the primary crushing mechanism, the secondary crushing mechanism and the screening and discharging mechanism, so that the raw materials to be crushed can be screened in coarse, medium and fine steps in an assembly line manner during the crushing process, effectively solving the problems of long crushing time, incomplete crushing and large crushing resistance caused by repeated crushing by a single crushing mechanism in the background technology, greatly improving the work efficiency and reducing the energy consumption cost.

[0021] The present invention designs an alternating screening mechanism in the screening and discharging mechanism, so that the raw materials to be screened can be screened in the formed screening cavity, effectively avoiding the continuous discharge of late raw materials during the screening process, thereby solving the problem of backlog of raw materials to be screened and effectively improving the screening efficiency.

[0022] The present invention solves the problem of feed flow control of different furfural raw materials to a certain extent through the design of the opening adjustment mechanism; in addition, the present invention realizes uniform transportation of the furfural raw materials to a certain extent through the auxiliary conveyor belt mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1-4 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle.

[0025] Figure 6-7 It is a schematic diagram of the assembly structure of the feed hopper and the primary crushing mechanism of the present invention.

[0026] Figure 8 It is a schematic structural diagram of the opening adjustment mechanism in the feed hopper of the present invention.

[0027] Fig. 9 For the present invention Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0028] Figure 10-12 It is a schematic diagram of the assembly structure of the secondary crushing mechanism and the screening and discharging mechanism of the present invention.

[0029] Fig.13 For the present invention Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0030] Fig.14 For the present invention Fig.10 Schematic diagram of the enlarged structure at D in the middle.

[0031] Fig.15 For the present invention Fig.11 Schematic diagram of the enlarged structure at E in the middle.

[0032] Fig.16 For the present invention Fig.12 Schematic diagram of the enlarged structure at F in the middle.

[0033] Figure 17-18 It is a partial structural schematic diagram of the alternating screening mechanism in the screening and discharging mechanism of the present invention.

[0034] Fig.19 This is a schematic diagram of the assembly structure of the secondary crushing mechanism of the present invention without the crushing cutter shaft 2.

[0035] Fig. 20 It is a schematic diagram of the assembly structure of the second crushing blade shaft and the driving cylinder in the secondary crushing mechanism of the present invention.

[0036] Fig.21 It is a schematic diagram of the assembly structure of the secondary crushing mechanism of the present invention and the screening and discharging mechanism after the inspection cover is removed.

[0037] Figure Number:

[0038] Feed silo hopper;

[0039] 11- auxiliary conveyor belt mechanism; 12- opening adjustment mechanism [1201- adjustment plate; 1202- auxiliary handle; 1203- adjustment component (1203a- adjustment pointer; 1203b- limit pin; 1203c- adjustment handle)]; 101- limit hole;

[0040] 2-First-level crushing mechanism;

[0041] 21-crushing bin one; 22-crushing knife shaft one; 23-motor one; 24-coarse mesh screen;

[0042] 3- Secondary crushing mechanism;

[0043] 31-crushing bin body 2; 32-crushing blade shaft 2; 33-screen mechanism (3301-middle screen; 3302-driving cylinder; 3303-fixing plate; 3304-pushing rod; 3305-limiting plate);

[0044] 4-Sieving and discharging mechanism;

[0045] 41- Alternating screening mechanism [4101- baffle plate one (4101a- toggle block one); 4102- baffle plate two (4102a- toggle block two); 4103- pulley assembly; 4104- reset spring one; 4105- telescopic driving member; 4106- support rod (4106a- toggle frame); 4107- motor two; 4108- cam; 4109- cover plate assembly; 4110- fine mesh screen; 4111- support frame; 4112- fan]; 42- material discharging box; 43- unqualified material box; 44- maintenance cover. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0047] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "in", "out", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Example

[0048] like Figure 1-5 As shown, a crushing and processing equipment for furfural raw materials comprises a feeding hopper 1, a primary crushing mechanism 2, a secondary crushing mechanism 3, a screening and discharging mechanism 4 and a control device which are sealed and installed from top to bottom; a coarse mesh screen 24 and a medium mesh screen 3301 are respectively provided at the bottom of the primary crushing mechanism 2 and the secondary crushing mechanism 3, the coarse mesh screen 24 is used to screen the raw materials that have reached the preliminary crushing particle size during the processing of the primary crushing mechanism 2 into the secondary crushing mechanism 3, and the medium mesh screen 3301 is used to screen the raw materials that have reached the secondary crushing particle size during the processing of the secondary crushing mechanism 3 into the screening and discharging mechanism 4; the screening and discharging mechanism 4 is used to further screen the raw materials that have reached the secondary crushing particle size, and to discharge the raw materials that have reached the discharge particle size requirement and the raw materials that have not reached the discharge particle size requirement into the discharge box 42 and the unqualified material box 43 provided on the screening and discharging mechanism 4 respectively; in this embodiment, after the raw materials in the unqualified material box 43 accumulate to a certain amount, they are re-conveyed to the feeding hopper 1 by manual or external conveying belts;

[0049] Through the design of the coarse mesh screen 24 and the medium mesh screen 3301, the primary crushing mechanism 2 and the secondary crushing mechanism 3 can timely discharge the raw materials that meet the corresponding crushing particle size requirements during the crushing process, thereby further making the uncrushed raw materials be crushed in time and thoroughly, and greatly reducing the crushing resistance; at the same time, through the screening cooperation of the screening discharging mechanism 4, the discharge particle size requirements are effectively guaranteed;

[0050] The control device is used to control the operation of the entire crushing and processing equipment.

[0051] Specifically, Figure 5-7As shown, the primary crushing mechanism 2 also includes a crushing bin body 21, a crushing blade shaft 22 and a motor 23; the feed port of the crushing bin body 21 is sealed and fixedly connected to the outlet of the feeding bin 1; the crushing blade shaft 22 is rotatably installed in the crushing bin body 21, and is driven to rotate by a motor 23 fixedly installed on the crushing bin body 21; the coarse mesh screen 24 is fixedly installed in the crushing bin body 21 and is located below the crushing blade shaft 22; in addition, in order to facilitate maintenance by operators, the crushing bin body 21 is provided with an openable maintenance cover through a hinge;

[0052] like Figure 10-13 As shown in Figures 19-20, the secondary crushing mechanism 3 includes a crushing bin body 2 31, a crushing blade shaft 2 32 and a mesh mechanism 33; the inlet of the crushing bin body 2 31 is sealed and fixedly connected to the outlet of the crushing bin body 1 21; the crushing blade shaft 2 32 is rotatably installed in the crushing bin body 2 31, and is connected to the output shaft of the motor 1 23 through the pulley mechanism 2 to achieve simultaneous operation with the crushing blade shaft 1 22; the mesh mechanism 33 includes a middle mesh screen 3301, a driving cylinder 3302, a fixed plate 3303, a push rod 3304 and a limit plate 3305; the middle mesh screen 3301 is horizontally slidably installed on the crushing bin body 2 31 and is located below the crushing blade shaft 2 32; two push rods 3304 are fixedly installed on the fixing plate 3303 The middle screen 3301 is provided at one end; the driving cylinder 3302 is coaxially fixedly connected with the end of the crushing blade shaft 2 32 away from the pulley mechanism 2; the push rod 3304 and the driving cylinder 3302 are both located outside the second crushing bin body 31; a reciprocating slide is provided on the driving cylinder 3302, and the push rod 3304 is slidably installed in the reciprocating slide, and the middle screen 3301 is driven by the driving cylinder 3302 to slide horizontally back and forth on the second crushing bin body 31; the limiting plate 3305 is fixedly arranged on the outside of the second crushing bin body 31 corresponding to the pushing rod 3304, and the pushing rod 3304 slides horizontally in the corresponding limiting plate 3305, and the setting of the limiting plate 3305 further ensures the stability of the pushing rod 3304 during the horizontal sliding process;

[0053] In this embodiment, in order to ensure that the crushing blade shaft 1 22 and the crushing blade shaft 2 32 can respectively capture the raw materials of the crushing bin body 1 21 and the crushing bin body 2 31 as much as possible, reduce the accumulation of uncrushed raw materials on the corresponding coarse mesh screen 24 and the medium mesh screen 3301, thereby improving the discharge of raw materials that meet the crushing particle size requirements, the minimum distance between the crushing blade shaft 1 22 and the coarse mesh screen 24 during rotation, and the minimum distance between the crushing blade shaft 2 32 and the medium mesh screen 3301 during rotation, are both set to 3mm.

[0054] Specifically, Figure 10-18 As shown in FIG. 21 , the screening and discharging mechanism 4 further includes an alternating screening mechanism 41 and an inspection cover 44 ;

[0055] The alternating screening mechanism 41 comprises an alternating screening assembly, a cover assembly 4109, a fine mesh screen 4110, a support frame 4111 and a fan 4112; the support frame 4111 is fixedly installed in the crushing bin body 2 31 and is located below the mesh screen mechanism 33; the support frame 4111 divides the crushing bin body 2 31 into two closed upper and lower channels; the discharge box 42 is arranged below the two channels for receiving raw materials that meet the discharge particle size requirements; a fine mesh screen 4110 is movably installed in each channel, one end of the fine mesh screen 4110 is hinged to the inner wall of the crushing bin body 2 31 by a hinge, and the other end is connected to the support frame 411 1 is hinged; the fine mesh screen 4110 separates the corresponding channel into two parts, upper and lower; the crushing bin body 31 is provided with an unqualified material outlet at the connection position of the two fine mesh screens 4110, and is intermittently opened and closed by a cover assembly 4109 arranged on the outer side of the crushing bin body 31; in this embodiment, the cover assembly 4109 includes a cylinder and a cover, the cylinder is installed on the outer wall of the crushing bin body 31, the cover corresponding to the unqualified material outlet is fixedly connected to the cylinder output end, and the cylinder is extended and retracted to drive the cover to open and cover the unqualified material outlet; the unqualified material box 43 is located at the qualified material outlet;

[0056] The alternating screening assembly includes a baffle plate 1 4101, a baffle plate 2 4102, a pulley assembly 4103, a reset spring 1 4104, a telescopic drive 4105 and a fan 4112; the baffle plate 1 4101 and the baffle plate 2 4102 are slidably mounted on the crushing bin body 2 31 corresponding to the top position of each channel; the pulley assembly 4103 is mounted on the outside of the crushing bin body 2 31 through a support rod, and the two ends of the rope are respectively connected to the baffle plate 1 4101 and the baffle plate 2 4102; the reset spring 1 4104 is a tension spring, one end of which is connected to the outside of the crushing bin body 2 31, and the other end is connected to the baffle plate 1 4101 ; The telescopic driving member 4105 is fixedly installed on the outside of the second crushing bin body 31, and the output end is connected to the second baffle plate 4102, and the telescopic driving member 4105 is a cylinder; the baffle plate 1 4101 and the baffle plate 2 4102 are alternately inserted into the second crushing bin body 31 under the drive of the telescopic driving member 4105, and when inserted into the second crushing bin body 31, they form a screening cavity with the support frame 4111 and the corresponding fine mesh screen 4110 and the cover plate assembly 4109; each screening cavity is installed with a fan 4112 for disturbing the air in the screening cavity, thereby stirring the raw materials entering the screening cavity;

[0057] In order to further improve the screening efficiency, the alternating screening assembly also includes a support rod 4106, a second motor 4107 and a cam 4108; a rectangular through hole is correspondingly provided on the second crushing bin body 31 and the support frame 4111, and the support rod 4106 is slidably installed in the rectangular through hole left and right; the second motor 4107 is fixedly installed on the inner end of the support rod 4106, and the output shaft is fixedly installed with the cam 4108; a toggle frame 4106a is provided on the outer end of the support rod 4106, and a toggle block 4101a and a toggle block 4102a are respectively provided on the outer ends of the baffle plate 1 4101 and the baffle plate 2 4102, and the toggle block 1 4101a and the toggle block 2 4102a push the toggle frame 4106a when the baffle plate 1 4101 and the baffle plate 2 4102 are alternately inserted into the second crushing bin body 31, thereby pushing the cam 4108 to contact the fine mesh screen 4110 on the corresponding side;

[0058] During the operation of the screening and discharging mechanism 4, the initial state is that the shielding plate 1 4101 and the shielding plate 2 4102 are respectively located outside the crushing bin body 2 31 and inside the crushing bin body 2 31. When the motor 1 23 starts working for a set time, the control device controls the telescopic driving member 4105 to extend. At this time, the shielding plate 1 4101 and the shielding plate 2 4102 are alternately moved. The shielding plate 1 4101 is inserted into the crushing bin body 2 31 under the action of the reset spring 1 4104 (tension spring). 102 is pushed out of the crushing bin body 2 31; during this process, the toggle block 1 4101a on the shielding plate 1 4101 pushes the toggle frame 4106a, thereby pushing the cam 4108 to contact the fine mesh screen 4110 on the corresponding side; at the same time, the control device controls the cover assembly 4109 to cover the outlet of unqualified materials, thereby making the shielding plate 1 4101 and the support frame 4111 and the corresponding fine mesh screen 4110 and the cover assembly 4109 form a screening cavity; thereafter, the wind The fan 4112 and the motor 2 4107 are started, and the raw materials in the screening cavity are stirred and pushed to the fine mesh screen 4110 for high-frequency vibration screening, thereby realizing that the raw materials in the screening cavity that meet the discharge particle size requirements are quickly screened and discharged into the discharge box 42; after the fan 4112 and the motor 2 4107 work for a set time, the control device controls the cover plate assembly 4109 to open the unqualified material outlet and discharge the unqualified raw materials into the unqualified material box 43; the above steps thus complete the formation of a screening cavity and the screening of the raw materials in the screening cavity, and thereafter, when the motor 1 23 continues to work for the same set time, the control device controls the telescopic drive member 4105 to retract, at this time, the baffle plate 1 4101 is pushed out of the crushing bin body 2 31 under the action of the reset spring 1 4104 (tension spring), and the baffle plate 2 4102 is inserted into the crushing bin body 2 31, thereby forming the corresponding screening cavity and screening the raw materials in the screening cavity, alternating in sequence until the raw materials to be crushed are completely crushed;

[0059] By designing the alternating screening mechanism 41 in the screening discharging mechanism 4, the raw materials to be screened can be screened in the formed screening cavity, which effectively avoids the continuous discharge of the late-entering raw materials during the screening process, thereby solving the problem of the backlog of the raw materials to be screened and effectively improving the screening efficiency;

[0060] In addition, in order to facilitate maintenance by operators, an inspection port is provided on the second crushing bin body 31 corresponding to the position of the alternating screening mechanism 41 , and the inspection cover 44 is airtightly installed on the inspection port.

[0061] Specifically, Figure 8-9 As shown, in order to cope with the feed flow of different furfural raw materials (such as corn cobs, corn stalks, wheat bran and sawdust) to a certain extent, an opening adjustment mechanism 12 is also provided on the feed hopper 1; the opening adjustment mechanism 12 includes an adjustment plate 1201 and an adjustment component 1203, and two adjustment plates 1201 are provided, which are symmetrically and rotatably installed at the inlet of the feed hopper 1, and one end of the rotating shaft of each adjustment plate 1201 is fixedly connected to the adjustment component 1203; the adjustment component 1203 is used to adjust the opening size of the adjustment plate 1201; in this embodiment, in order to facilitate the operation of the opening degree of the adjustment plate 1201, an auxiliary handle 1202 is also fixedly installed on the other end of the rotating shaft of the adjustment plate 1201, and the auxiliary handle 1202 is located on the outside of the feed hopper 1. During operation, two hands hold the auxiliary handle 1202 and the adjustment component 1203 respectively to adjust the opening degree of the adjustment plate 1201;

[0062] Specifically, the adjustment component 1203 includes an adjustment pointer 1203a, a limit pin 1203b and an adjustment handle 1203c; the adjustment pointer 1203a is fixedly connected to one end of the rotating shaft of the adjustment plate 1201 and is located on the outside of the feed hopper 1; the limit pin 1203b is slidably installed on the adjustment plate 1201 through a second reset spring; a plurality of equally spaced limit holes 101 are provided on the outside of the feed hopper 1 corresponding to the rotation path of the limit pin 1203b, and the limit pin 1203b is intermittently inserted into one of the limit holes 101; the adjustment handle 1203c is installed on the adjustment pointer 1203a.

[0063] Specifically, Figure 5 As shown, an auxiliary conveyor belt mechanism 11 is also provided in the feed hopper 1, and the auxiliary conveyor belt mechanism 11 is located below the opening adjustment mechanism 12; in this embodiment, an inclined transition channel with a gentle angle is provided between the entrance and the exit of the feed hopper 1, and the auxiliary conveyor belt mechanism 11 is installed on the inclined transition channel, and is connected to the output shaft of the motor 23 through a pulley mechanism 1, so as to realize simultaneous operation with the crushing knife shaft 22; push plates are evenly installed on the conveyor belt of the auxiliary conveyor belt mechanism 11, which is used to evenly convey the raw materials entering the feed hopper 1.

Claims

1. A crushing and processing equipment for furfural raw materials, characterized in that: The invention comprises a feeding hopper (1), a primary crushing mechanism (2), a secondary crushing mechanism (3), a screening and discharging mechanism (4) and a control device which are installed in a sealed manner from top to bottom; the primary crushing mechanism (2) and the secondary crushing mechanism (3) are provided with a coarse mesh screen (24) and a medium mesh screen (3301) at the bottom, respectively; the coarse mesh screen (24) is used to screen raw materials that have reached a preliminary crushing particle size during the processing of the primary crushing mechanism (2) into the secondary crushing mechanism (3); the medium mesh screen (3301) is used to screen raw materials that have reached a secondary crushing particle size during the processing of the secondary crushing mechanism (3) into the screening and discharging mechanism (4); the screening and discharging mechanism (4) is used to further screen the raw materials that have reached the secondary crushing particle size, and to discharge raw materials that have reached the required discharge particle size and raw materials that have not reached the required discharge particle size into a discharge box (42) and an unqualified material box (43) provided on the screening and discharging mechanism (4); the control device is used to control the operation of the entire crushing processing equipment; The primary crushing mechanism (2) further comprises a crushing bin body (21), a crushing blade shaft (22) and a motor (23); the feed inlet of the crushing bin body (21) is sealed and fixedly connected to the outlet of the feed bin hopper (1); the crushing blade shaft (22) is rotatably mounted in the crushing bin body (21) and is driven to rotate by a motor (23) fixedly mounted on the crushing bin body (21); the coarse mesh screen (24) is fixedly mounted in the crushing bin body (21) and is located below the crushing blade shaft (22); The secondary crushing mechanism (3) comprises a second crushing bin body (31), a second crushing blade shaft (32) and a mesh screen mechanism (33); the inlet of the second crushing bin body (31) is sealed and fixedly connected to the outlet of the first crushing bin body (21); the second crushing blade shaft (32) is rotatably mounted in the second crushing bin body (31) and is connected to the output shaft of the first motor (23) via the second pulley mechanism to achieve simultaneous operation with the first crushing blade shaft (22); the mesh screen mechanism (33) comprises a middle mesh screen (3301), a driving cylinder (3302), a fixing plate (3303) and a pushing rod (3304); the middle mesh screen (3301) is horizontally slidably mounted on the second crushing bin body (31) and is movable back and forth. ) and is located below the second crushing blade shaft (32); at least one of the push rods (3304) is fixedly mounted on one end of the middle screen (3301) via a fixing plate (3303); the driving cylinder (3302) is coaxially fixedly connected to one end of the second crushing blade shaft (32) away from the second pulley mechanism; the push rod (3304) and the driving cylinder (3302) are both located outside the second crushing bin body (31); a reciprocating slide is provided on the driving cylinder (3302), the push rod (3304) is slidably mounted in the reciprocating slide, and driven by the driving cylinder (3302), the middle screen (3301) is driven to slide horizontally back and forth on the second crushing bin body (31); The screening and discharging mechanism (4) further comprises an alternating screening mechanism (41) and an inspection cover (44); The alternating screening mechanism (41) comprises an alternating screening assembly, a cover assembly (4109), a fine mesh screen (4110), a support frame (4111) and a fan (4112); the support frame (4111) is fixedly mounted in the second crushing bin body (31) and is located below the mesh screen mechanism (33); the support frame (4111) separates the second crushing bin body (31) into two closed upper and lower channels; the discharge box (42) is arranged below the two channels and is used to receive raw materials that meet the discharge particle size requirements; each of the channels is movably mounted There is a fine mesh screen (4110), one end of which is movably connected to the inner wall of the second crushing bin body (31), and the other end of which is movably connected to the support frame (4111); the fine mesh screen (4110) divides the corresponding channel into two upper and lower parts; a defective material outlet is provided at the position where the two fine mesh screens (4110) are connected on the second crushing bin body (31), and is intermittently opened and closed by a cover plate assembly (4109) arranged on the outside of the second crushing bin body (31); the defective material box (43) is located at the qualified material outlet; The alternating screening assembly comprises a baffle plate 1 (4101), a baffle plate 2 (4102), a pulley assembly (4103), a return spring 1 (4104), a telescopic driving member (4105) and a fan (4112); the baffle plate 1 (4101) and the baffle plate 2 (4102) are slidably mounted on the crushing bin body 2 (31) corresponding to the top position of each channel; the pulley assembly (4103) is mounted on the outside of the crushing bin body 2 (31) through a support rod, and the two ends of the rope are respectively connected to the baffle plate 1 (4101) and the baffle plate 2 (4102); one end of the return spring 1 (4104) is connected to the outside of the crushing bin body 2 (31), and the other end is connected to the baffle plate 1 (4101); the telescopic driving member (4105) is fixedly mounted on the outside of the second crushing bin body (31), and the output end is connected to the second baffle plate (4102); the baffle plate (4101) and the second baffle plate (4102) are alternately inserted into the second crushing bin body (31) under the drive of the telescopic driving member (4105), and when inserted into the second crushing bin body (31), they form a screening cavity with the support frame (4111) and the corresponding fine mesh screen (4110) and the cover plate assembly (4109); each of the screening cavities is installed with a fan (4112) for disturbing the air in the screening cavity, thereby stirring the raw materials entering the screening cavity; An inspection opening is provided on the second crushing bin body (31) at a position corresponding to the alternating screening mechanism (41), and the inspection cover (44) is tightly mounted on the inspection opening; The alternating screening assembly further comprises a support rod (4106), a second motor (4107) and a cam (4108); a rectangular through hole is correspondingly provided on the second crushing bin body (31) and the support frame (4111), and the support rod (4106) is slidably installed in the rectangular through hole; the second motor (4107) is fixedly installed on the inner end of the support rod (4106), and the output shaft is fixedly installed on the cam (4108); a toggle switch is provided on the outer end of the support rod (4106) The outer ends of the baffle plate 1 (4101) and the baffle plate 2 (4102) are respectively provided with a toggle block 1 (4101a) and a toggle block 2 (4102a), and the toggle block 1 (4101a) and the toggle block 2 (4102a) respectively push the toggle frame (4106a) when the baffle plate 1 (4101) and the baffle plate 2 (4102) are alternately inserted into the crushing bin body 2 (31), thereby pushing the cam (4108) to contact the fine mesh screen (4110) on the corresponding side.

2. A crushing and processing equipment for furfural raw materials according to claim 1, characterized in that: The mesh screen mechanism (33) further comprises a limiting plate (3305); the limiting plate (3305) is fixedly arranged on the outside of the second crushing bin body (31) corresponding to the pushing rod (3304); the pushing rod (3304) slides horizontally in the corresponding limiting plate (3305).

3. The crushing and processing equipment for furfural raw materials according to claim 1, characterized in that: The minimum distance between the first crushing blade shaft (22) and the coarse mesh screen (24) during rotation, and the minimum distance between the second crushing blade shaft (32) and the medium mesh screen (3301) during rotation, are both no greater than 10 mm.

4. A crushing and processing equipment for furfural raw materials according to any one of claims 1 to 3, characterized in that: The feed hopper (1) is also provided with an opening adjustment mechanism (12); the opening adjustment mechanism (12) comprises an adjustment plate (1201) and an adjustment component (1203); the adjustment plate (1201) is rotatably mounted at the inlet of the feed hopper (1), and one end of the rotating shaft is fixedly connected to the adjustment component (1203); the adjustment component (1203) is used to adjust the opening size of the adjustment plate (1201).

5. A crushing and processing equipment for furfural raw materials according to claim 4, characterized in that: The adjustment component (1203) comprises an adjustment pointer (1203a), a limit pin (1203b) and an adjustment handle (1203c); the adjustment pointer (1203a) is fixedly connected to one end of a rotating shaft of an adjustment plate (1201) and is located outside the feed bin (1); the limit pin (1203b) is slidably mounted on the adjustment plate (1201) via a second return spring; a plurality of limit holes (101) with equal spacing are provided on the outside of the feed bin (1) corresponding to the rotation path of the limit pin (1203b), and the limit pin (1203b) is intermittently inserted into one of the limit holes (101); and the adjustment handle (1203c) is mounted on the adjustment pointer (1203a).

6. A crushing and processing equipment for furfural raw materials according to any one of claims 1 to 3, characterized in that: An auxiliary conveyor belt mechanism (11) is also provided in the feed hopper (1). The auxiliary conveyor belt mechanism (11) is located below the opening adjustment mechanism (12) and is used to uniformly convey the raw materials entering the feed hopper (1).

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