CN112916123A

CN112916123A - Low-cost environment-friendly equipment for flame-retardant plastic wood

Info

Publication number: CN112916123A
Application number: CN202110087680.5A
Authority: CN
Inventors: 董延京; 丁建生; 余继春
Original assignee: Nanjing Juxinfeng New Materials Co ltd
Current assignee: Nanjing Juxinfeng New Materials Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-06-08

Abstract

The invention discloses low-cost environment-friendly equipment for flame-retardant plastic wood, which comprises a dust remover body, wherein one side of the dust remover body is communicated with a pretreatment pipe through an air inlet, one side of the pretreatment pipe is communicated with an air inlet pipe, the lower part of the pretreatment pipe is connected with an ash deposition bin through a pretreatment box, a vibration motor is obliquely and fixedly arranged in the pretreatment pipe, one side of the pretreatment box is provided with a driving motor, one end of the driving motor is connected with a motor shaft, the outer side of the motor shaft is fixedly connected with a bevel gear, the bevel gear is connected with a fan blade through a second connecting rod, the inner part of the pretreatment box is fixedly connected with a separation plate, the surface of the separation plate is provided with through holes which are uniformly distributed, and the bottom surface of the pretreatment box is fixedly connected with a fixing plate; the pretreatment function can be realized, the treatment pressure of the dust remover body can be reduced, the service life of the dust remover body is prolonged, and the practicability of the dust remover body can be improved.

Description

Low-cost environment-friendly equipment for flame-retardant plastic wood

Technical Field

The invention relates to the field of flame-retardant plastic wood, in particular to low-cost environment-friendly equipment for flame-retardant plastic wood.

Background

The plastic-wood material is also called wood-plastic composite material, and as the name suggests, the plastic (recovered waste plastics such as polypropylene (PP), Polyethylene (PE), polyvinyl chloride (PVC)) is mainly used as a raw material, the wood flour, the rice hull, the straw and other waste plant fibers are added to be mixed into a new wood material, and then the new wood material is subjected to plastic processing technologies such as extrusion, mould pressing, injection molding and the like to produce a plate or a section.

In the process of producing the flame-retardant plastic wood, a large amount of dust is generated, so that the environment is polluted, and potential safety hazards exist, because the woodworking dust remover is moved, the environmental protection is improved.

However, the existing woodworking dust remover does not have the pretreatment function, is easy to stop due to high-load operation when the treatment capacity is large, has large service life loss and low practicability, and provides the low-cost environment-friendly equipment for flame-retardant plastic wood.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the low-cost environment-friendly equipment for the flame-retardant plastic wood, which is additionally provided with the pretreatment device, and can solve the technical problems that the existing woodworking dust remover does not have the pretreatment function, is easy to shut down due to high-load operation when the treatment capacity is larger, has larger service life loss and low practicability.

In order to solve the technical problems, the invention provides the following technical scheme: the environment-friendly equipment for the flame-retardant plastic wood with low cost comprises a dust remover body, wherein one side of the dust remover body is communicated with a pretreatment pipe through an air inlet, one side of the pretreatment pipe is communicated with an air inlet pipe, the lower part of the pretreatment pipe is connected with an ash deposition bin through a pretreatment box, a vibration motor is obliquely fixed in the pretreatment pipe, a driving motor is arranged on one side of the pretreatment box, one end of the driving motor is connected with a motor shaft, the outer side of the motor shaft is fixedly connected with a bevel gear, the bevel gear is connected with a fan blade through a second connecting rod, the interior of the pretreatment box is fixedly connected with a separation plate, the surface of the isolation plate is provided with through holes which are uniformly distributed, the bottom surface of the pretreatment tank is fixedly connected with a fixed plate, the surface of the fixed plate is fixedly connected with a positioning rod, and the outer side of the positioning rod is rotatably connected with a driving ring;

the motor shaft is connected with the transfer line through belt drive, the outside fixedly connected with crushing board of transfer line, the end of transfer line runs through the fixed plate, and the outside fixedly connected with carousel of fixed plate, the fixed surface of carousel is connected with the dead lever, dead lever and drive ring phase-match, the top fixedly connected with half gear of drive ring, the meshing of half gear top has the rack, the rack is connected with the head rod through the slider, the sliding tray has been seted up to the inside of division board, slider, rack all are located the inside of sliding tray, the top fixedly connected with bull stick of head rod, the outside of bull stick is rotated and is connected with the grinding wheel.

As a preferred technical scheme of the invention, the surface of the sliding block is fixedly connected with symmetrical second dovetail blocks, the inner wall of the sliding groove is provided with symmetrical second dovetail grooves, and the second dovetail blocks are matched with the second dovetail grooves.

As a preferable technical scheme of the invention, the bottom of the dust remover body is provided with a lifting mechanism.

As a preferable technical solution of the present invention, a heat dissipation mechanism is disposed outside the driving motor.

As a preferred technical scheme of the invention, the bottom surface of the pretreatment tank is fixedly connected with first spring tubes which are symmetrical in pairs, a first pull rod penetrates through the middle of each first spring tube, the outer sides of the first pull rods are respectively and fixedly connected with a first stop block and a second stop block, a limiting spring is sleeved on the outer side of each first pull rod, positioning grooves which are symmetrical in pairs are formed in the surface of the top end of the ash deposition bin, the first pull rods are matched with the positioning grooves, the bottom ends of the first spring tubes are communicated with second spring tubes, a second pull rod penetrates through the inner portions of the second spring tubes, the top ends of the second pull rods are located between the first stop blocks and the second stop blocks, limiting stop rings are fixedly connected on the outer sides of the top ends of the second pull rods, and return springs are sleeved on the outer sides of the second pull rods.

According to a preferable technical scheme of the invention, the outer surface of the tail end of the first pull rod and the inner wall of the positioning groove are both provided with grains, and the two grains are mutually meshed.

As a preferable technical scheme of the invention, a soft shell is sleeved outside the free end of the first pull rod.

As a preferred technical scheme of the invention, an air equalizer is arranged inside the air inlet pipe, an arrow-shaped block is fixedly connected to the inner surface of the air inlet pipe, first dovetail grooves are formed in the surfaces of two sides of the arrow-shaped block, connecting grooves are formed in the top surface and the bottom surface of the air equalizer, symmetrical first dovetail blocks are fixedly connected to the inner wall of each connecting groove, and the first dovetail blocks are matched with the first dovetail grooves.

As a preferable technical scheme of the invention, the surface of the first dovetail groove is provided with bulges which are uniformly distributed.

As a preferable technical scheme of the invention, the outer surface of the air equalizer is plated with a silicon carbide film.

Compared with the prior art, the invention can achieve the following beneficial effects:

1. when the fan blade rotates, form the negative pressure, attract the large granule thing, and hit the surface that drops the division board after garrulous with the large granule thing, pulverize it at runner-wheel pivoted process, the granule after pulverizing passes through the through-hole whereabouts, at transfer line pivoted in-process, the particulate matter that will fall is hit the bits of broken glass, this in-process, can distinguish big particulate matter and dust in the saw-dust bits of powder, and successively carry out the cubic with the large granule thing and smash, turn into slight smashing, give after collecting it again and hand over and carry out secondary treatment by the dust remover body, can play preliminary treatment's effect, can reduce dust remover body treatment pressure, the life of dust remover body has been prolonged, the practicality of dust remover body also can be improved.

2. The pretreatment tank can be quickly disassembled and replaced, time is saved, efficiency is high, and practicability and convenience of the pretreatment tank are improved.

3. The air balancing device can be installed quickly, installation time of a user is saved, installation efficiency of the user is improved, and practicability of the air balancing device is improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of a pretreatment pipe according to the present invention;

FIG. 3 is a schematic cross-sectional view of the pretreatment tank of the present invention;

FIG. 4 is a schematic cross-sectional view of the intake manifold of the present invention;

FIG. 5 is an enlarged view of the structure at C in FIG. 4 according to the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 7 is an enlarged view of the structure at B in FIG. 3 according to the present invention;

FIG. 8 is an enlarged view of the structure at E in FIG. 3 according to the present invention;

FIG. 9 is a schematic view of the turntable in elevation view;

FIG. 10 is an enlarged view of the structure at D in FIG. 3 according to the present invention;

wherein: 1. a dust collector body; 11. an air inlet; 2. a pretreatment tube; 21. vibrating a motor; 3. a pretreatment tank; 31. a separator plate; 32. a through hole; 33. grinding the wheel; 34. a rotating rod; 35. A fixing plate; 36. a second dovetail groove; 37. a sliding groove; 38. a first connecting rod; 39. a second dovetail block; 4. an ash accumulation bin; 5. a drive motor; 51. a motor shaft; 52. a belt; 53. a bevel gear; 54. a second connecting rod; 55. a fan blade; 56. a transmission rod; 57. a crushing plate; 6. An air inlet pipe; 61. an air equalizer; 62. an arrow-like block; 63. a first dovetail block; 64. a first dovetail groove; 65. connecting grooves; 7. a first spring tube; 71. a first pull rod; 72. a limiting spring; 73. a first stopper; 74. a second stopper; 75. a second spring tube; 76. positioning a groove; 77. A second pull rod; 78. a return spring; 79. a limit stop ring; 8. a turntable; 81. fixing the rod; 82. a drive ring; 83. positioning a rod; 84. a half gear; 85. a rack; 86. a slide block.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-10, a low-cost environment-friendly device for flame retardant plastic wood comprises a dust collector body 1, one side of the dust collector body 1 is communicated with a pretreatment tube 2 through an air inlet 11, one side of the pretreatment tube 2 is communicated with an air inlet tube 6, the lower part of the pretreatment tube 2 is connected with an ash deposition bin 4 through a pretreatment box 3, a vibration motor 21 is obliquely fixed in the pretreatment tube 2, a driving motor 5 is arranged on one side of the pretreatment box 3, one end of the driving motor 5 is connected with a motor shaft 51, the outer side of the motor shaft 51 is fixedly connected with a bevel gear 53, the bevel gear 53 is connected with a fan blade 55 through a second connecting rod 54, a separation plate 31 is fixedly connected in the pretreatment box 3, through holes 32 are uniformly distributed on the surface of the separation plate 31, a fixing plate 35 is fixedly connected to the bottom surface of the pretreatment box 3, a positioning rod 83 is fixedly connected to the surface, the outer side of the positioning rod 83 is rotatably connected with a driving ring 82;

the motor shaft 51 is connected with a transmission rod 56 through a belt 52 in a transmission manner, the outer side of the transmission rod 56 is fixedly connected with a crushing plate 57, the tail end of the transmission rod 56 penetrates through the fixing plate 35, the outer side of the fixing plate 35 is fixedly connected with a rotating disc 8, the surface of the rotating disc 8 is fixedly connected with a fixing rod 81, the fixing rod 81 is matched with a driving ring 82, the top end of the driving ring 82 is fixedly connected with a half gear 84, the top end of the half gear 84 is meshed with a rack 85, the rack 85 is connected with a first connecting rod 38 through a sliding block 86, the inside of the isolation plate 31 is provided with a sliding groove 37, the sliding block 86 and the rack 85 are both positioned inside the sliding groove 37, the top end of;

when the dust remover body 1 is used, dust formed after processing of the flame-retardant wood-plastic board enters the interior of the pretreatment pipe 2 through the air inlet pipe 6, large particles in the dust fall after being blocked by the vibration motor 21, the driving motor 5 drives the bevel gear 53 to drive the fan blade 55 to rotate through the motor shaft 51, meanwhile, the motor shaft 51 drives the transmission rod 56 to rotate through the belt 52, the transmission rod 56 drives the crushing plate 57 and the rotary disc 8 to rotate, the rotary disc 8 drives the fixing rod 81 to rotate in a reciprocating manner, the rotating fixing rod 81 drives the driving ring 82 to move in a reciprocating manner, the driving ring 82 drives the half gear 84 to rotate, the half gear 84 drives the rack 85 to drive the sliding block 86 to move in a reciprocating manner, the sliding block 86 drives the rotating rod 34 to move through the first connecting rod 38, and the rotating rod;

when the fan blades 55 rotate, negative pressure is formed, large particles are attracted down, the large particles fall down to the surface of the isolation plate 31 after being smashed, the large particles are smashed in the rotating process of the grinding wheel 33, the smashed particles fall down through the through holes 32, the fallen particles are smashed in the rotating process of the transmission rod 56, in the process, the large particles and dust in the sawdust can be distinguished, the large particles are smashed three times and are converted into fine smashing, the large particles are collected and then are subjected to secondary treatment by the dust remover body 1, the pretreatment effect can be achieved, the treatment pressure of the dust remover body 1 can be reduced, when the treatment capacity is large, the dust remover cannot stop due to high-load operation, the service life of the dust remover body 1 is prolonged, and the practicability of the dust remover body 1 can be improved.

In another embodiment, the embodiment discloses the second dovetail block 39 disposed on the surface of the sliding block 86, as shown in fig. 3 and 7, the surface of the sliding block 86 is fixedly connected with the symmetrical second dovetail blocks 39, the inner wall of the sliding groove 37 is provided with symmetrical second dovetail grooves 36, and the second dovetail blocks 39 are matched with the second dovetail grooves 36; when the sliding block 86 is used, the second dovetail block 39 is matched with the second dovetail groove 36, so that the sliding block 86 can be limited, and the sliding block 86 cannot deviate.

In another embodiment, the embodiment discloses a lifting mechanism disposed at the bottom of the dust collector body 1, as shown in fig. 1, the lifting mechanism is mounted at the bottom of the dust collector body 1; during the use, through adjusting elevating system, can adjust the use height of dust remover body 1, improved the application scope of dust remover body 1.

In another embodiment, the present embodiment discloses a heat dissipation mechanism disposed outside the driving motor 5, as shown in fig. 3, the heat dissipation mechanism is disposed outside the driving motor 5; when the heat dissipation structure is used, the heat dissipation structure can play a role in heat dissipation of the driving motor 5, and the driving motor 5 can work normally and conveniently.

In another embodiment, the present embodiment discloses a first spring tube 7 provided on the bottom surface of the pretreatment tank 3, as shown in fig. 3 and 10, the bottom surface of the pretreatment tank 3 is fixedly connected with first spring tubes 7 which are symmetric in pairs, a first pull rod 71 penetrates through the middle of each first spring tube 7, the outer side of each first pull rod 71 is fixedly connected with a first stop block 73 and a second stop block 74 respectively, a limiting spring 72 is sleeved on the outer side of each first pull rod 71, positioning grooves 76 which are symmetric in pairs are formed in the surface of the top end of the dust deposition chamber 4, the first pull rods 71 are matched with the positioning grooves 76, the bottom ends of the first spring tubes 7 are communicated with second spring tubes 75, second pull rods 77 penetrate through the inner portions of the second spring tubes 75, the top ends of the second pull rods 77 are located between the first stop blocks 73 and the second stop blocks 74, limiting stop rings 79 are fixedly connected to the outer sides of the top ends of the second pull rods 77, and return springs 78 are sleeved on the outer sides of the second pull rods;

when the deposition bin 4 needs to be disassembled, the second pull rod 77 is pulled downwards, the second pull rod 77 drives the limit stop ring 79 to move, the surface of the first pull rod 71 is separated from the top end of the second pull rod 77, the inner part of the second spring tube 75 is returned to, the reset spring 78 in a normal state is stressed and contracted, the limit spring 72 in a stretching state is not stressed, the first pull rod 71 is driven to be separated from the inner part of the positioning groove 76 through the first stop block 73, the pre-treatment box 3 is disassembled at the moment, the structure is simple, the pre-treatment box 3 can be disassembled and replaced quickly, the time is saved, the efficiency is high, and the practicability and the convenience of the pre-treatment box 3 are improved.

In another embodiment, the embodiment discloses the texture disposed on the outer surface of the end of the first pull rod 71 and the inner wall of the positioning groove 76, as shown in fig. 10, the outer surface of the end of the first pull rod 71 and the inner wall of the positioning groove 76 are both provided with texture, and the two textures are engaged with each other; when in use, the two lines are mutually occluded; the connection between the first pull rod 71 and the positioning groove 76 can be made more firm.

In another embodiment, the present embodiment discloses a soft shell disposed outside the free end of the first pull rod 71, as shown in fig. 10, the soft shell is sleeved outside the free end of the first pull rod 71; when the shock absorber is used, the soft shell can play a shock-absorbing role on the free end of the first pull rod 71, and the hand feeling of a user is improved.

In another embodiment, the present embodiment discloses a wind equalizer 61 disposed inside an air inlet pipe 6, as shown in fig. 4 and 5, the wind equalizer 61 is disposed inside the air inlet pipe 6, an arrow-shaped block 62 is fixedly connected to an inner surface of the air inlet pipe 6, first dovetail grooves 64 are respectively formed on two side surfaces of the arrow-shaped block 62, connection grooves 65 are respectively formed on a top surface and a bottom surface of the wind equalizer 61, symmetrical first dovetail blocks 63 are fixedly connected to inner walls of the connection grooves 65, and the first dovetail blocks 63 are matched with the first dovetail grooves 64;

when the air equalizer 61 needs to be installed, the air equalizer 61 is moved towards the middle of the air inlet pipe 6 until the arrow-shaped block 62 is positioned inside the connecting groove 65, and when the first dovetail block 63 is matched with the first dovetail groove 64, the installation of the air equalizer 61 is completed; this simple structure can install the wind ware 61 fast, has saved user's installation time, has improved user's installation effectiveness, has improved the practicality of wind ware 61.

In another embodiment, the embodiment discloses protrusions disposed on the surface of the first dovetail groove 64, as shown in fig. 5, the surface of the first dovetail groove 64 is provided with protrusions, and the protrusions are uniformly distributed; when the dovetail groove structure is used, the surface of the first dovetail groove 64 is provided with the protrusions, so that the contact area between the first dovetail block 63 and the first dovetail groove 64 can be increased, and the connection tightness between the first dovetail block 63 and the first dovetail groove 64 can be increased.

In another embodiment, the present embodiment discloses a silicon carbide film disposed on the outer surface of the air equalizer 61, as shown in fig. 4, the outer surface of the air equalizer 61 is plated with the silicon carbide film; when the wind equalizing device is used, the silicon carbide film can increase the wear resistance of the wind equalizing device 61 and prolong the service life of the wind equalizing device 61.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fire-retardant for wood moulding environmental protection equipment with low costs, includes dust remover body (1), its characterized in that: one side of the dust remover body (1) is communicated with a pretreatment pipe (2) through an air inlet (11), one side of the pretreatment pipe (2) is communicated with an air inlet pipe (6), the lower part of the pretreatment pipe (2) is connected with an ash deposition bin (4) through a pretreatment box (3), a vibration motor (21) is obliquely fixed inside the pretreatment pipe (2), a driving motor (5) is arranged on one side of the pretreatment box (3), one end of the driving motor (5) is connected with a motor shaft (51), the outer side of the motor shaft (51) is fixedly connected with a bevel gear (53), the bevel gear (53) is connected with a fan blade (55) through a second connecting rod (54), the inner part of the pretreatment box (3) is fixedly connected with a partition plate (31), through holes (32) which are uniformly distributed are formed in the surface of the partition plate (31), and a fixing plate (35) is fixedly connected to the bottom surface of the pretreatment box (3), a positioning rod (83) is fixedly connected to the surface of the fixing plate (35), and a driving ring (82) is rotatably connected to the outer side of the positioning rod (83);

the motor shaft (51) is in transmission connection with a transmission rod (56) through a belt (52), the outer side of the transmission rod (56) is fixedly connected with a crushing plate (57), the tail end of the transmission rod (56) penetrates through a fixing plate (35), the outer side of the fixing plate (35) is fixedly connected with a turntable (8), the surface of the turntable (8) is fixedly connected with a fixing rod (81), the fixing rod (81) is matched with a driving ring (82), the top end of the driving ring (82) is fixedly connected with a half gear (84), the top end of the half gear (84) is meshed with a rack (85), the rack (85) is connected with a first connecting rod (38) through a sliding block (86), a sliding groove (37) is formed in the isolating plate (31), the sliding block (86) and the rack (85) are both located in the sliding groove (37), and the top end of the first connecting rod (38) is fixedly connected, the outer side of the rotating rod (34) is rotatably connected with a grinding wheel (33).

2. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 1, wherein: the surface of the sliding block (86) is fixedly connected with symmetrical second dovetail blocks (39), symmetrical second dovetail grooves (36) are formed in the inner wall of the sliding groove (37), and the second dovetail blocks (39) are matched with the second dovetail grooves (36).

3. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 1, wherein: and a lifting mechanism is arranged at the bottom of the dust remover body (1).

4. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 1, wherein: and a heat dissipation mechanism is arranged on the outer side of the driving motor (5).

5. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 1, wherein: the bottom surface of the pretreatment box (3) is fixedly connected with first spring tubes (7) which are symmetrical in pairs, a first pull rod (71) penetrates through the middle of each first spring tube (7), the outer sides of the first pull rods (71) are respectively fixedly connected with a first stop block (73) and a second stop block (74), a limiting spring (72) is sleeved on the outer side of each first pull rod (71), positioning grooves (76) which are symmetrical in pairs are formed in the top end surface of the ash deposition bin (4), the first pull rods (71) are matched with the positioning grooves (76), the bottom end of each first spring tube (7) is communicated with a second spring tube (75), a second pull rod (77) penetrates through the inside of each second spring tube (75), the top end of each second pull rod (77) is located between the first stop block (73) and the second stop block (74), and limiting stop rings (79) are fixedly connected to the outer sides of the top ends of the second pull rods (77), and a return spring (78) is sleeved on the outer side of the second pull rod (77).

6. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 5, wherein: lines are arranged on the outer surface of the tail end of the first pull rod (71) and the inner wall of the positioning groove (76), and the two lines are meshed with each other.

7. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 5, wherein: the outer side of the free end of the first pull rod (71) is sleeved with a soft shell.

8. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 1, wherein: the inside of intake pipe (6) is provided with wind equalizer (61), the internal surface fixedly connected with arrow form piece (62) of intake pipe (6), first dovetail (64) have all been seted up on the both sides surface of arrow form piece (62), spread groove (65) have all been seted up to the top surface and the bottom surface of wind equalizer (61), the inner wall fixedly connected with symmetrical first dovetail (63) of spread groove (65), first dovetail (63) and first dovetail (64) phase-match.

9. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 8, wherein: the surface of the first dovetail groove (64) is provided with bulges which are uniformly distributed.

10. The low-cost environment-friendly equipment for flame-retardant plastic wood as claimed in claim 8, wherein: the outer surface of the air equalizer (61) is plated with a silicon carbide film.