Air supply device capable of stably discharging powder for powder feeder

Abstract

The invention belongs to the technical field of industrial equipment, and discloses a stable powder discharging air supply device for a powder feeder, which comprises a shell, an air cylinder is fixedly connected to the inner wall of the shell, a gate is fixedly connected to the movable end of the air cylinder, a lubricating mechanism is arranged on the outer wall of the gate, and a connecting mechanism is arranged on the outer wall of the shell; and the connecting mechanism comprises a connecting block, a sliding groove is formed in the outer wall of the connecting block, a main gear is rotationally connected to the inner wall of the connecting block, a rotating block is fixedly connected to the outer wall of the main gear, and a sliding block is hinged to the outer wall of the rotating block through a hinge rod. Through cooperation of structures such as the rotating rod and the sliding block, the position of the threaded hole is adjusted by rotating the rotating rod so as to correspond to the position of a flange plate bolt hole in a pulverized coal feeder connecting pipe or an air-pulverized coal mixer connecting pipe, and therefore installation can be conducted through a positioning bolt; the problem that flange plate bolt holes and threaded holes are different in position and cannot be installed and used is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial equipment, and in particular is an air supply device for a powder feeder for stably feeding powder. Background Art

[0002] The pulverized coal feeder is a key equipment for pulverized coal transportation. Its main function is to stably and evenly transport the pulverized coal to the subsequent process flow according to the specific pulverizing amount requirements. The pulverized coal feeder is connected to the air-powder mixer to transport the pulverized coal to the air-powder mixer, where the pulverized coal is fully mixed with air to facilitate efficient and stable combustion in subsequent combustion equipment such as boilers.

[0003] The pulverized coal in the silo enters the pulverizer through the gate, and the pulverized coal is sent into the pulverizer pipe by rotation, and then mixed with the hot primary air, and the pulverized coal is blown into the furnace by the hot primary air for combustion. In order to avoid the problem of discontinuous pulverization of the pulverizer and failure to discharge pulverized coal when the pulverizer is started due to the falling off of the anti-wear sheet inside the silo, the high humidity of the pulverized coal in the silo and the uneven opening of the gate, some existing technologies set a device containing a vibration motor, a gate pneumatic actuator and a control system on the pulverizer, control the opening and closing degree of the gate according to the temperature of the pulverized coal, and ensure that the pulverized coal falls smoothly from the pulverizer pipeline through the vibration motor, and the device is arranged as a whole between the pulverizer and the air-powder mixer, and connected to the pipeline by bolts. Since the positions of the bolt holes on the flange plates of the external pipelines of different pulverizers and air-powder mixers are different, and the positions of the bolt holes on the external pipelines of the device are fixed, the bolt holes may not correspond to each other and cannot be installed, affecting normal connection and use. Therefore, in view of the above problems, an air supply device for stable powder discharge for a pulverizer is proposed. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides an air supply device for a powder feeder to stably discharge powder, which solves the problem that the pipeline bolt holes in the prior art do not correspond and cannot be installed and used.

[0005] To achieve the above object, the present invention provides the following technical solution: an air supply device for a powder feeder to stably discharge powder, comprising a shell, an inner wall of the shell is fixedly connected to a cylinder, a movable end of the cylinder is fixedly connected to a gate, an outer wall of the gate is provided with a lubrication mechanism, and an outer wall of the shell is provided with a connection mechanism;

[0006] The connecting mechanism includes a connecting block, a sliding groove is provided on the outer wall of the connecting block, the inner wall of the connecting block is rotatably connected to the main gear, the outer wall of the main gear is fixedly connected to the rotating block, the outer wall of the rotating block is hinged with a slider through a hinge rod, the outer wall of the slider is provided with a threaded hole, the inner wall of the connecting block is rotatably connected to the sub-gear, the outer wall of the sub-gear is fixedly connected to a rotating rod, the outer wall of the rotating rod is provided with an external thread, and the outer wall of the rotating rod is threadedly connected to a ring.

[0007] Preferably, the connecting mechanism is provided with two groups, and the outer walls of the two groups of connecting mechanisms are respectively provided with a powder feeder connecting pipe and an air-powder mixer connecting pipe through positioning bolts, the outer walls of the positioning bolts are threadedly connected with nuts, and the outer wall of the powder feeder connecting pipe is fixedly connected with a vibration motor.

[0008] Preferably, the connecting block is fixedly connected to the outer wall of the shell, the rotating block is rotatably connected to the inner wall of the connecting block, and the main gear is meshed with the auxiliary gear.

[0009] Preferably, one end of the hinged rod is hinged to the outer wall of the slider, the other end of the hinged rod is hinged to the outer wall of the rotating block, the slider is slidably connected to the inner wall of the connecting block, and the threaded hole is threadedly connected to the positioning bolt.

[0010] Preferably, the gate is slidably connected to the inner wall of the shell, and the powder feeder connecting pipe and the air-powder mixer connecting pipe are in contact with the outer wall of the connecting block.

[0011] Preferably, the lubrication mechanism includes a fixed plate, the inner wall of the fixed plate is fixedly connected to an oil tank, the inner wall of the fixed plate is fixedly connected to a guide plate, the outer wall of the oil tank is fixedly connected to an oil inlet pipe, the top inner wall of the oil tank is elastically connected to a moving block via a connecting spring, the outer wall of the moving block is fixedly connected to a vertical plate, the outer wall of the vertical plate is provided with an inclined groove, the inner wall of the oil tank is slidably connected to a baffle, the inner wall of the oil tank is provided with a guide groove, the outer wall of the baffle is fixedly connected to a fixed block, and the inner wall of the shell is fixedly connected to a protrusion.

[0012] Preferably, the fixed plate is fixedly connected to the outer wall of the gate, the oil inlet pipe is fixedly connected to the inner wall of the fixed plate, and the vertical plate is slidably connected to the inner wall of the oil tank.

[0013] Preferably, one end of the connecting spring is fixedly connected to the outer wall of the moving block, and the other end of the connecting spring is fixedly connected to the inner wall of the oil tank.

[0014] Preferably, the fixing block is slidably connected to the inner wall of the inclined groove, and the fixing block contacts the inner wall of the guide groove.

[0015] Preferably, the moving block is slidably connected to the inner wall of the oil tank, and the protrusion is in contact with the outer wall of the moving block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides the cooperation of structures such as a rotating rod and a slider, and by rotating the rotating rod, the rotating rod drives the secondary gear and the main gear to rotate, and the corresponding slider can be driven to move to the middle or the outside at the same time through the hinge rod, so as to adjust the position of the threaded hole to correspond to the position of the flange bolt hole on the powder feeder connecting pipe or the air powder mixer connecting pipe, so that it can be installed through the positioning bolt, thereby improving the adaptability to the bolt holes in different positions, and can also be installed when the bolt holes on the flange are at different positions, which is more flexible and avoids the problem that the flange bolt hole and the threaded hole are at different positions and cannot be installed and used;

[0018] The present invention cooperates with structures such as a moving block and an oil tank. When the coal powder temperature is high or low, the gate is moved up and down to adjust the powder output. The moving block can be squeezed by the protrusion, and the vertical plate drives the baffle plate to move upward to open the oil outlet. The lubricating oil can flow out from the oil outlet below the oil tank to the inclined guide plate. During the movement of the gate, the friction point between the gate and the shell can be lubricated, thereby reducing the friction generated when the gate moves, reducing wear and tear, and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the exploded structure of the connecting mechanism, the powder feeder connecting pipe, and the air-powder mixer connecting pipe of the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting block of the present invention;

[0022] Figure 4 It is a cross-section diagram of the connecting block and the connecting mechanism structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the shell section, cylinder and gate structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing plate of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross section of the fixing plate and the cross section of the oil tank of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the moving block, the vertical plate and the baffle plate of the present invention.

[0027] In the figure: 1. shell; 2. connecting mechanism; 201. connecting block; 202. slide; 203. main gear; 204. hinge rod; 205. slider; 206. threaded hole; 207. rotating block; 208. sub gear; 209. collar; 210. external thread; 211. rotating rod; 3. lubrication mechanism; 1001. fixed plate; 1002. oil tank; 1003. guide plate; 1004. oil inlet pipe; 1005. connecting spring; 1006. moving block; 1007. vertical plate; 1008. inclined groove; 1009. baffle; 1010. guide groove; 1011. fixed block; 4. powder feeder connecting pipe; 5. air powder mixer connecting pipe; 6. vibration motor; 7. nut; 8. gate; 9. positioning bolt; 10. cylinder; 11. bump. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 8 As shown, the present invention provides an air supply device for a powder feeder with stable powder feeding, comprising a shell 1, an inner wall of the shell 1 is fixedly connected with a cylinder 10, a movable end of the cylinder 10 is fixedly connected with a gate 8, an outer wall of the gate 8 is provided with a lubrication mechanism 3, and an outer wall of the shell 1 is provided with a connecting mechanism 2; the connecting mechanism 2 comprises a connecting block 201, an outer wall of the connecting block 201 is provided with a slide groove 202, the inner wall of the connecting block 201 is rotatably connected with a main gear 203, the outer wall of the main gear 203 is fixedly connected with a rotating block 207, the outer wall of the rotating block 207 is hinged with a slider 205 through a hinge rod 204, the outer wall of the slider 205 is provided with a threaded hole 206, the inner wall of the connecting block 201 is rotatably connected with a sub-gear 208, the outer wall of the sub-gear 208 is fixedly connected with a rotating rod 211, the outer wall of the rotating rod 211 is provided with an external thread 210, and the outer wall of the rotating rod 211 is threadedly connected with a collar 209.

[0030] The above scheme is adopted: the powder feeder is connected to the air-powder mixer through the shell 1, and the connection mechanism 2 on the outer wall of both sides of the shell 1 can adjust the position of the threaded hole 206 to correspond to the position of the bolt hole on the flange according to the different types and specifications of the powder feeder connecting pipe 4 and the air-powder mixer connecting pipe 5, that is, it will not cause the problem that the threaded hole 206 and the bolt hole on the flange are in different positions and cannot be installed; the cylinder 10 is connected to the gate 8, when the coal powder passes through the air-powder mixer, it enters the interior of the shell 1 through the pipeline. Under normal circumstances, the control system controls the movable end of the cylinder 10 to move when the gate 8 remains in a 50% open state. When the temperature of the air-powder mixture is detected to be 180-220℃, the gate maintains this state; when the temperature is less than 180℃, the gate 5 is closed every 5℃ lower % (delay 10s), when the temperature is lower than 140℃, the powder feeder is stopped, when the temperature is 220-250℃, the gate is opened 5% (delay 10s) for every 5℃ increase, when the pneumatic door opening reaches 80% or the temperature is greater than 250℃, the control system starts the vibration motor 6, the vibration motor 6 is the prior art, when started, the powder feeder connecting pipe 4 can be continuously vibrated, when the powder feeder connecting pipe 4 is too high and the powder is not flowing smoothly, the vibration motor 6 can make the coal powder fall smoothly from the powder feeder connecting pipe 4, the vibration motor 6 runs for 1min or the powder mixing temperature drops, the vibration motor 6 is stopped; if the powder feeding temperature does not show a downward trend after the vibration motor 6 runs three times, contact the maintenance personnel for processing; the connection between the cylinder 10, the gate 8 and the vibration motor 6 are all prior art.

[0031] like Figures 2 to 4 As shown, the connecting mechanism 2 is provided with two groups, and the outer walls of the two groups of connecting mechanisms 2 are respectively provided with a powder feeder connecting pipe 4 and a wind powder mixer connecting pipe 5 through positioning bolts 9, the outer wall of the positioning bolts 9 is threadedly connected with a nut 7, and the outer wall of the powder feeder connecting pipe 4 is fixedly connected with a vibration motor 6; the connecting block 201 is fixedly connected to the outer wall of the shell 1, the rotating block 207 is rotatably connected to the inner wall of the connecting block 201, and the main gear 203 is meshed with the sub-gear 208; one end of the hinged rod 204 is hinged to the outer wall of the slider 205, and the other end of the hinged rod 204 is hinged to the outer wall of the rotating block 207, the slider 205 is slidably connected to the inner wall of the connecting block 201, and the threaded hole 206 is threadedly connected to the positioning bolts 9; the gate 8 is slidably connected to the inner wall of the shell 1, and the powder feeder connecting pipe 4 and the wind powder mixer connecting pipe 5 are in contact with the outer wall of the connecting block 201.

[0032] The above scheme is adopted: by adjusting the position of the slider 205, the threaded hole 206 is made to correspond to the position of the bolt hole on the flange, and the connecting mechanism 2 can be connected to the powder feeder connecting pipe 4 and the air-powder mixer connecting pipe 5 through the positioning bolt 9 and the nut 7. At this time, the powder feeder connecting pipe 4 is connected to the air-powder mixer connecting pipe 5 and the housing 1; when the bolt hole on the flange of the powder feeder connecting pipe 4 and the air-powder mixer connecting pipe 5 is at a different position from the threaded hole 206, the operator can twist the collar 209 to make it disengage from the outer wall of the connecting block 201, but not disengage from the rotating rod 211. At this time, the fixing of the rotating rod 211 can be released, and the rotating rod 211 can be rotated to drive the sub-gear 208 to rotate synchronously. Since the sub-gear 208 is meshed with the main gear 203, the main gear 203 can be driven to rotate synchronously; when the main gear 203 rotates, the rotating block 207 rotates accordingly, and The hinge rod 204 is driven to move with one end fixed thereto, and the slider 205 fixed at the other end of the hinge rod 204 is slidably connected to the inner wall of the connecting block 201. Under the guiding effect, it can only move linearly to the outside or the center part of the connecting block 201, so that the rotating block 207 and the hinge rod 204 can be used to drive multiple groups of sliders 205 to move to the middle or outside at the same time. During the movement, the threaded hole 206 always corresponds to the position of the slide groove 202, so that the rotating rod 211 can be rotated to adjust the threaded hole 206 to the position corresponding to the bolt hole on the flange for installation and connection, which is more flexible and has higher adaptability; when the slider 205 is adjusted to a suitable position, the ring 209 can be screwed in the opposite direction to rotate it along the external thread 210 until it is in close contact with the outer wall of the connecting block 201, so that the rotating rod 211 can be limited, so that the positions of the multiple groups of sliders 205 are fixed and remain stable after connection.

[0033] like Figures 5 to 8 As shown, the lubrication mechanism 3 includes a fixed plate 1001, the inner wall of the fixed plate 1001 is fixedly connected to an oil tank 1002, the inner wall of the fixed plate 1001 is fixedly connected to a guide plate 1003, the outer wall of the oil tank 1002 is fixedly connected to an oil inlet pipe 1004, the top inner wall of the oil tank 1002 is elastically connected to a moving block 1006 through a connecting spring 1005, the outer wall of the moving block 1006 is fixedly connected to a vertical plate 1007, the outer wall of the vertical plate 1007 is provided with an inclined groove 1008, the inner wall of the oil tank 1002 is slidably connected to a baffle 1009, the inner wall of the oil tank 1002 is provided with a guide groove 1010, the outer wall of the baffle 1009 is fixedly connected to a fixed block 1011, and the inner wall of the shell 1 is fixedly connected to a protrusion 11.

[0034] The above scheme is adopted: since the cylinder 10 can drive the gate 8 to move up and down in the inner wall of the shell 1, the lubrication mechanism 3 on both sides of the gate 8 can lubricate the contact between the gate 8 and the shell 1 during movement, so as to reduce the wear of the gate 8 during movement and improve the service life; multiple groups of oil tanks 1002 can be arranged in the fixed plate 1001, and a guide plate 1003 is arranged below each group of oil tanks 1002, which is in an inclined state, so that the lubricating oil can be discharged from the oil outlet below the oil tank 1002 and move downward along the inclined surface of the guide plate 1003 to the contact between the gate 8 and the inner wall of the shell 1; each group of oil tanks 1002 is connected to the oil inlet pipe 1004, and when the lubricating oil is insufficient, it can be Lubricating oil is poured into the interior of the oil tank 1002 through the oil inlet pipe 1004; the inner wall of the shell 1 is provided with the same number of protrusions 11 as the oil tank 1002, and is correspondingly arranged at the oblique lower part of the oil tank 1002. When not affected by external forces, the moving block 1006 maintains a part of its external state under the elastic force of the connecting spring 1005. When the gate 8 and the lubrication mechanism 3 move up and down synchronously, the moving block 1006 contacts a group of protrusions 11 and is squeezed by the protrusions 11, driving the vertical plate 1007 and the baffle 1009 to move. The baffle 1009 can open the oil outlet below the oil tank 1002, so that the lubricating oil can flow out for lubrication.

[0035] like Figures 5 to 8 As shown, the fixed plate 1001 is fixedly connected to the outer wall of the gate 8, the oil inlet pipe 1004 is fixedly connected to the inner wall of the fixed plate 1001, and the vertical plate 1007 is slidably connected to the inner wall of the oil tank 1002; one end of the connecting spring 1005 is fixedly connected to the outer wall of the moving block 1006, and the other end of the connecting spring 1005 is fixedly connected to the inner wall of the oil tank 1002; the fixed block 1011 is slidably connected to the inner wall of the inclined groove 1008, and the fixed block 1011 contacts the inner wall of the guide groove 1010; the moving block 1006 is slidably connected to the inner wall of the oil tank 1002, and the protrusion 11 contacts the outer wall of the moving block 1006.

[0036] The above scheme is adopted: after the moving block 1006 is squeezed by the protrusion 11 and moves to the top inner wall of the oil tank 1002, the connecting spring 1005 is forced to shrink, and the moving block 1006 drives the two sets of vertical plates 1007 to move synchronously, and the inclined groove 1008 generates a squeezing force on the outer wall of the fixed block 1011, so that the fixed block 1011 and the baffle 1009 move synchronously; because the fixed block 1011 contacts the inner wall of the guide groove 1010, the baffle 1009 moves upward while the vertical plate 1007 moves under the guidance of the guide groove 1010; because the baffle 1009 is not affected by external forces and is in contact with the oil tank 1 002 contacts the inner wall of the bottom end of the baffle 1009 to close the oil outlet, so that the oil outlet is opened when the baffle 1009 moves upward, and the lubricating oil can flow down through the oil outlet to the guide plate 1003 for lubrication; when the gate 8 and the lubrication mechanism 3 move to the point where the moving block 1006 is out of contact with the protrusion 11, the moving block 1006 is reset under the elastic force of the connecting spring 1005, driving the vertical plate 1007 to reset, so that the baffle 1009 moves downward and closes the oil outlet again, so that the lubricating oil will not leak from the oil tank 1002; and then through the movement of the gate 8, lubrication can be automatically performed during the movement, reducing friction during movement.

[0037] The working principle and use process of the present invention:

[0038] The powder feeder connecting pipe 4 and the air-powder mixer connecting pipe 5 can be connected through a connecting mechanism 2, and the connecting mechanism 2 is provided with two groups, which are symmetrically distributed on both sides of the housing 1; during the installation process, when the flange bolt holes on the powder feeder connecting pipe 4 and the air-powder mixer connecting pipe 5 are at different positions from the threaded holes 206, the operator twists the collar 209 to make it disengage from the outer wall of the connecting block 201 but not disengage from the rotating rod 211, release the fixing of the rotating rod 211, rotate the rotating rod 211 to drive the secondary gear 208 to rotate, the secondary gear 208 drives the main gear 203 to rotate, the main gear 203 rotates to cause the rotating block 207 to rotate accordingly, and the rotating block 207 drives the slider 205 on the connecting block 2 through the hinged rod 204 01 The inner wall moves straightly toward the outside or the center part; during the movement, the threaded hole 206 always corresponds to the position of the slide groove 202, so that the threaded hole 206 can be adjusted to correspond to the position of the bolt hole on the flange, and then the collar 209 is screwed in the opposite direction to rotate it along the external thread 210 until it is in close contact with the outer wall of the connecting block 201, and the rotating rod 211 is limited to fix the position of the slider 205 to ensure the stability after connection; then the connecting mechanism 2 is connected to the powder feeder connecting pipe 4 and the air powder mixer connecting pipe 5 with the positioning bolts 9 and nuts 7 to make them in a connected state, so as to complete the connection of the pipelines, with high adaptability, avoiding the problem that the bolt holes and the holes on the flange cannot be installed due to different positions.

[0039] After the connection is completed, the coal powder passes through the air-powder mixer and enters the interior of the housing 1 through the pipeline. The gate 8 is the gate in the existing device. Under normal temperature conditions, the gate remains open 50%. When the temperature of the air-powder mixture is detected to be 180-220°C, the gate remains in this state; when the temperature is less than 180°C, the gate is closed by 85% (delay 10s) for every 5°C decrease, and when the temperature is lower than 140°C, the powder feeder is stopped; when the temperature is 220-250°C, the gate is opened by 85% (delay 10s) for every 5°C increase, when the pneumatic door opening reaches 80% or the temperature is greater than 250°C, the control system starts the vibration motor 6, the vibration motor 6 runs for 1min or the powder mixing temperature drops, and the vibration motor 6 is stopped; if the powder feeding temperature has no downward trend after the vibration motor 6 runs three times, contact the maintenance personnel for processing; in this way, the gate 8 opening and the vibration motor 6 start-up are flexibly controlled according to the temperature to ensure the stability and safety of powder feeding.

[0040] When the cylinder 10 drives the gate 8 to move up and down on the inner wall of the shell 1, the protrusion 11 on the inner wall of the shell 1 will contact and squeeze the moving block 1006 in the lubricating mechanism 3, and the moving block 1006 will move inward under the squeezing, compressing the connecting spring 1005, driving the vertical plate 1007 to move, and the vertical plate 1007 will squeeze the fixed block 1011 through the inclined groove 1008, so that the fixed block 1011 drives the baffle 1009 to move, and because the fixed block 1011 contacts and is guided by the guide groove 1010, the baffle 1009 is driven to move upward, opening. The lubricating oil flows out from the oil outlet below the oil tank 1002 and moves downward along the inclined surface of the guide plate 1003 to the contact point between the gate 8 and the inner wall of the shell 1 for lubrication; when the gate 8 and the lubrication mechanism 3 move to the point where the moving block 1006 is out of contact with the protrusion 11, the moving block 1006 is reset under the elastic force of the connecting spring 1005, driving the vertical plate 1007 and the baffle 1009 to reset, and the baffle 1009 closes the oil outlet again to prevent the lubricating oil from leaking, thereby realizing automatic lubrication during the movement of the gate 8 and reducing the wear of the gate 8 during movement.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air supply device for a powder feeder for stable powder feeding, comprising a housing (1), characterized in that: The inner wall of the housing (1) is fixedly connected to a cylinder (10), the movable end of the cylinder (10) is fixedly connected to a gate (8), the outer wall of the gate (8) is provided with a lubrication mechanism (3), and the outer wall of the housing (1) is provided with a connection mechanism (2); The connection mechanism (2) comprises a connection block (201), the outer wall of the connection block (201) is provided with a sliding groove (202), the inner wall of the connection block (201) is rotatably connected to a main gear (203), the outer wall of the main gear (203) is fixedly connected to a rotating block (207), the outer wall of the rotating block (207) is hinged to a slider (205) via a hinge rod (204), the outer wall of the slider (205) is provided with a threaded hole (206), the inner wall of the connection block (201) is rotatably connected to a sub-gear (208), the outer wall of the sub-gear (208) is fixedly connected to a rotating rod (211), the outer wall of the rotating rod (211) is provided with an external thread (210), and the outer wall of the rotating rod (211) is threadedly connected to a collar (209).

2. The air supply device for stable powder feeding for a powder feeder according to claim 1, characterized in that: The connecting mechanism (2) is provided with two groups, and the outer walls of the two groups of connecting mechanisms (2) are respectively provided with a powder feeder connecting pipe (4) and an air-powder mixer connecting pipe (5) through positioning bolts (9), the outer walls of the positioning bolts (9) are threadedly connected with nuts (7), and the outer walls of the powder feeder connecting pipe (4) are fixedly connected with a vibration motor (6).

3. The air supply device for stable powder feeding for a powder feeder according to claim 1, characterized in that: The connecting block (201) is fixedly connected to the outer wall of the housing (1), the rotating block (207) is rotatably connected to the inner wall of the connecting block (201), and the main gear (203) is meshed with the auxiliary gear (208).

4. The air supply device for stable powder feeding for a powder feeder according to claim 1, characterized in that: One end of the hinged rod (204) is hinged to the outer wall of the slider (205), the other end of the hinged rod (204) is hinged to the outer wall of the rotating block (207), the slider (205) is slidably connected to the inner wall of the connecting block (201), and the threaded hole (206) is threadedly connected to the positioning bolt (9).

5. The air supply device for stable powder feeding for a powder feeder according to claim 2, characterized in that: The gate (8) is slidably connected to the inner wall of the housing (1), and the powder feeder connecting pipe (4) and the air-powder mixer connecting pipe (5) are in contact with the outer wall of the connecting block (201).

6. The air supply device for stable powder feeding for a powder feeder according to claim 1, characterized in that: The lubricating mechanism (3) comprises a fixed plate (1001), the inner wall of the fixed plate (1001) is fixedly connected to an oil tank (1002), the inner wall of the fixed plate (1001) is fixedly connected to a guide plate (1003), the outer wall of the oil tank (1002) is fixedly connected to an oil inlet pipe (1004), the top inner wall of the oil tank (1002) is elastically connected to a moving block (1006) via a connecting spring (1005), and the moving block (1006) is fixedly connected to the inner wall of the top end of the oil tank (1002) via a connecting spring (1005). The outer wall of the block (1006) is fixedly connected to a vertical plate (1007), the outer wall of the vertical plate (1007) is provided with an inclined groove (1008), the inner wall of the oil tank (1002) is slidably connected to a baffle (1009), the inner wall of the oil tank (1002) is provided with a guide groove (1010), the outer wall of the baffle (1009) is fixedly connected to a fixed block (1011), and the inner wall of the shell (1) is fixedly connected to a protrusion (11).

7. The air supply device for stable powder feeding for a powder feeder according to claim 6, characterized in that: The fixed plate (1001) is fixedly connected to the outer wall of the gate (8), the oil inlet pipe (1004) is fixedly connected to the inner wall of the fixed plate (1001), and the vertical plate (1007) is slidably connected to the inner wall of the oil tank (1002).

8. The air supply device for stable powder feeding for a powder feeder according to claim 6, characterized in that: One end of the connecting spring (1005) is fixedly connected to the outer wall of the moving block (1006), and the other end of the connecting spring (1005) is fixedly connected to the inner wall of the oil tank (1002).

9. The air supply device for stable powder feeding for a powder feeder according to claim 6, characterized in that: The fixing block (1011) is slidably connected to the inner wall of the inclined groove (1008), and the fixing block (1011) is in contact with the inner wall of the guide groove (1010).

10. The air supply device for stable powder feeding for a powder feeder according to claim 6, characterized in that: The moving block (1006) is slidably connected to the inner wall of the oil tank (1002), and the protrusion (11) is in contact with the outer wall of the moving block (1006).

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