Dust removal safety protection device for mixing plant

Abstract

The invention discloses a mixing plant dust removal safety protection device, and relates to the technical field of mixing plant protection, the mixing plant dust removal safety protection device comprises a support, the top of the support is fixedly provided with a mixing shell, the top of the mixing shell is fixedly provided with a top cover, the surface of the top cover is provided with a feed inlet, and the circumferential surface of the mixing shell is fixedly provided with a support frame; the feeding pipe is fixedly mounted at the top of the top cover, the two clamping plates are fixedly mounted at the top of the top cover, the rotating shaft is rotatably mounted between the clamping plates, the servo motor is fixedly mounted at the top of the top cover, and the output end of the servo motor rotatably penetrates through the inner and outer walls of the clamping plates; the output end of the servo motor is fixedly mounted on the surface of a rotating shaft, the rotating shaft rotates to drive an arc-shaped rotating rod to rotate towards the top, the arc-shaped rotating rod rotates to drive a cover plate to rotate towards the top, the situation that the required requirement cannot be met after special materials are stirred is prevented, and the qualified rate of device production is increased.

Description

Technical Field

[0001] The invention relates to the technical field of mixing station protection, and in particular to a dust removal safety protection device for a mixing station. Background Art

[0002] The dust removal safety protection device of the mixing station is a kind of equipment to ensure the safe and stable operation of the mixing station during operation and reduce dust pollution. Its main purpose is to protect the safety of equipment and operators, while ensuring the cleanliness of the working environment.

[0003] The patent with patent announcement number CN207359366U relates to a new type of concrete mixing station feed inlet protection device, which solves the technical problem that the T-shaped welded parts are fixedly connected at the entrance of the feed inlet, occupying the internal space of the feed inlet pipe, reducing the space at the feed inlet, and affecting the normal pumping of powder during actual use, causing the pumping speed to decrease. The key points of the patent are that it includes a feed pipe, and the outer surface of the feed inlet end of the feed pipe is rotatably connected to a protective cover, and the outer surface of the feed pipe is provided with a lock assembly for locking the protective cover. The protective cover rotates clockwise to open the feed inlet of the feed pipe, and the protective cover is rotatably connected to the outer surface of the feed pipe. The lock assembly is also provided on the outer surface of the feed pipe, which achieves the purpose of preventing the problem of powder filling into the wrong tank and not affecting the normal pumping of the powder.

[0004] In the above patent, the lock assembly is also arranged on the outer surface of the feed pipe, which achieves the purpose of preventing the problem of powder filling into the wrong tank and not affecting the normal pumping of the powder. However, when the stirring device is stirring, some materials need to be stirred in a sealed manner. If the internal pressure leaks during stirring, the stirred material will fail to meet the required requirements, resulting in material waste. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a dust removal safety protection device for a mixing station, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dust removal safety protection device for a mixing station, comprising a bracket, a mixing shell is fixedly installed on the top of the bracket, a top cover is fixedly installed on the top of the mixing shell, a feed inlet is opened on the surface of the top cover, a support frame is fixedly installed on the circumferential surface of the mixing shell, a sealing device is arranged on the top of the top cover, a self-locking device for limiting the sealing device and a protective device for protecting the self-locking device are also arranged on the top of the top cover, wherein the sealing device comprises: a feed pipe, two clamping plates, a servo motor, A rotating shaft, an arc-shaped rotating rod and a cover plate, wherein the feed pipe is fixedly mounted on the top of the top cover, the two clamps are fixedly mounted on the top of the top cover, the rotating shaft is rotatably mounted between the clamps, the servo motor is fixedly mounted on the top of the top cover, the output end of the servo motor rotates and passes through the inner and outer walls of the clamps, the output end of the servo motor is fixedly mounted on the surface of the rotating shaft, the arc-shaped rotating rod is fixedly mounted on the circumferential surface of the rotating shaft, the cover plate is fixedly mounted on one end of the arc-shaped rotating rod away from the rotating shaft, the rotation of the rotating shaft will drive the arc-shaped rotating rod to rotate toward the top, and the rotation of the arc-shaped rotating rod will drive the cover plate to rotate toward the top.

[0007] According to the above technical solution, a ventilation pipe is fixedly installed on the circumferential surface of the feed pipe, a sealing plate is slidably installed on the inner wall of the ventilation pipe, a sealing rod is slidably penetrated through the inner and outer walls of the ventilation pipe, a sealing ring is fixedly installed on the circumferential surface of the feed pipe, and the sealing device also includes: a connecting round rod, a triangular plate and a transmission rod, the connecting round rod is fixedly penetrated through one end of the sealing ring, the connecting round rod is slidably penetrated through the other end of the sealing ring, the triangular plate is fixedly installed on the bottom of the connecting round rod, and the transmission rod is fixedly installed on the end of the sealing rod away from the sealing plate, the movement of the triangular plate will drive the movement of the connecting round rod, the movement of the connecting round rod will drive the sealing ring to deform and tighten, and after the sealing ring is tightened, the joint between the feed pipe and the cover plate will be sealed.

[0008] According to the above technical solution, a No. 1 spring is arranged between the sealing plate and the ventilation pipe, the sealing ring is elastic, and the No. 1 spring drives the sealing plate to reset.

[0009] The cam is fixedly mounted on the top of the top cover, and a square groove is provided on the surface of the square tube. The transmission vertical rod slides through the inner and outer walls of the feed tube, and the pressure rod is slidably mounted on the inner wall of the square groove. The two sliding plates are slidably mounted on the inner wall of the square tube, one of the sliding plates is fixedly mounted on the bottom of the transmission vertical rod, and the other of the sliding plates is fixedly mounted on the bottom of the pressure rod. The two U-shaped rods are fixedly mounted on the bottom of the sliding plate, the plug plate is slidably mounted on the inner wall of the U-shaped rod, the unlocking rod rotates and penetrates the inner and outer walls of the square tube, the rotating rod is fixedly mounted on a side of the unlocking rod close to the U-shaped rod, and the baffle is fixedly mounted on the bottom of the plug plate. The movement of the baffle plate will drive the direction of the plug plate to move. After the plug plate moves, it no longer contacts with one of the sliding plates. Subsequently, the pressure rod is driven to move to the top through the No. 3 spring reset, and the pressure rod no longer contacts with the cover plate after moving.

[0010] According to the above technical solution, a No. 2 spring is arranged between the plug plate and the U-shaped rod, the rotating rod is in contact with the baffle, and the plug plate is driven to reset by the No. 2 spring.

[0011] According to the above technical solution, a torsion spring is arranged between the unlocking rod and the square tube, and a No. 3 spring is arranged between the pressure rod and the square tube, and the No. 3 spring drives the pressure rod to reset.

[0012] According to the above technical solution, the protective device includes: an inflation tube, a piston, a connecting rod, a U-shaped vertical rod, an L-shaped rod and a blocking plate. The inflation tube is fixedly installed on the bottom of the inner wall of the square tube. Two circular holes are provided on the circumferential surface of the inflation tube. The piston is slidably installed on the inner wall of the inflation tube. The connecting rod is fixedly installed on the top of the piston. The U-shaped vertical rod is fixedly installed on the top of the connecting rod. The L-shaped rod is fixedly installed on the surface of the connecting rod. The blocking plate is fixedly installed on the bottom of the L-shaped rod. The movement of the connecting rod toward the bottom will drive the L-shaped rod to move toward the bottom. The movement of the L-shaped rod toward the bottom will drive the blocking plate to move toward the bottom and block part of the circular holes.

[0013] According to the above technical solution, a No. 4 spring is arranged between the piston and the square tube, the blocking plate is in contact with the circular hole, and the No. 4 spring drives the piston to reset.

[0014] The present invention provides a dust removal safety protection device for a mixing station, which has the following beneficial effects: (1) In the present invention, the rotation of the arc-shaped rotating rod drives the cover plate to rotate toward the top. The rotation of the cover plate contacts the top of the feed pipe and covers the top of the feed pipe to prevent dust from entering the interior of the mixing shell. The joint between the feed pipe and the cover plate is sealed after the sealing ring is tightened. When the device detects that the internal air pressure of the mixing shell is leaking, the joint of the device will be automatically sealed to prevent the special material from failing to meet the required requirements after stirring, thereby improving the qualified rate of the device production.

[0015] (2) In the present invention, the movement of the sliding plate drives the pressure rod to move toward the bottom, and the movement of the pressure rod contacts the cover plate and limits the cover plate, so that the device will automatically limit the cover plate after closing, without manual operation. After the pressure rod moves, it will no longer contact the cover plate, so that the pressure rod will no longer limit the cover plate, and the cover plate can be quickly released from the limit. At the same time, the unlocking method of pressing and rotating can prevent the staff from accidentally touching the unlocking rod and causing the limit to be released, thereby improving the safety of the device when in use.

[0016] (3) The invention slowly draws air into the interior of the inflation tube through the circular hole, so that the speed of the piston moving toward the top is reduced, and the speed of the transmission vertical rod moving toward the top is reduced, so that the cover plate has sufficient time to open, and the cover plate is prevented from contacting the pressure rod so that the cover plate cannot be opened smoothly, thereby improving the stability of the device during operation. The movement of the connecting rod toward the bottom will drive the L-shaped rod to move toward the bottom, and the movement of the L-shaped rod toward the bottom will drive the blocking plate to move toward the bottom and block part of the circular hole, so that the movement speed is further reduced, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structural relationship between the support frame and the stirring shell of the present invention; Figure 3 This is a schematic diagram of the top structure of the top cover of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the ventilation pipe of the present invention; Figure 5 This is a schematic diagram of the positional relationship between the pressure rod and the square tube of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of a square tube of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the inflation tube of the present invention.

[0018] In the figure: 1. bracket; 2. stirring shell; 3. top cover; 4. support frame; 51. feed pipe; 52. clamping plate; 53. servo motor; 54. rotating shaft; 55. arc rotating rod; 56. cover plate; 57. ventilation pipe; 58. sealing plate; 59. sealing rod; 510. sealing ring; 511. connecting round rod; 512. triangular plate; 513. transmission rod; 61. square tube; 62. transmission vertical rod; 63. pressure rod; 64. sliding plate; 65. U-shaped rod; 66. plug plate; 67. unlocking rod; 68. rotating rod; 69. baffle; 71. inflation tube; 72. piston; 73. No. 4 spring; 74. connecting rod; 75. U-shaped vertical rod; 76. L-shaped rod; 77. blocking plate. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1 - Figure 4 One embodiment of the present invention is: a dust removal safety protection device for a mixing station, comprising a bracket 1, a mixing shell 2 is fixedly installed on the top of the bracket 1, a top cover 3 is fixedly installed on the top of the mixing shell 2, a feed port is opened on the surface of the top cover 3, a support frame 4 is fixedly installed on the circumferential surface of the mixing shell 2, a sealing device is arranged on the top of the top cover 3, and the sealing device comprises: a feed pipe 51, two clamping plates 52, a servo motor 53, a rotating shaft 54, an arc-shaped rotating rod 55 and a cover plate 56, the feed pipe 51 is fixedly installed on the top of the top cover 3, and the two clamping plates 52 are fixedly installed At the top of the top cover 3, the rotating shaft 54 ​​is rotatably installed between the clamping plates 52, the servo motor 53 is fixedly installed on the top of the top cover 3, the output end of the servo motor 53 rotates and passes through the inner and outer walls of the clamping plates 52, the output end of the servo motor 53 is fixedly installed on the surface of the rotating shaft 54, the arc-shaped rotating rod 55 is fixedly installed on the circumferential surface of the rotating shaft 54, the cover plate 56 is fixedly installed on the end of the arc-shaped rotating rod 55 away from the rotating shaft 54, and the cover plate 56 rotates to contact the top of the feed pipe 51 and cover the top of the feed pipe 51 to prevent dust from entering the interior of the stirring shell 2.

[0021] A ventilation pipe 57 is fixedly installed on the circumferential surface of the feed pipe 51, a sealing plate 58 is slidably installed on the inner wall of the ventilation pipe 57, a sealing rod 59 is slidably penetrated through the inner and outer walls of the ventilation pipe 57, and a sealing ring 510 is fixedly installed on the circumferential surface of the feed pipe 51. The sealing device also includes: a connecting round rod 511, a triangular plate 512 and a transmission rod 513. The connecting round rod 511 is fixedly penetrated at one end of the sealing ring 510, and the connecting round rod 511 is slidably penetrated at the other end of the sealing ring 510. The triangular plate 512 is fixedly installed at the bottom of the connecting round rod 511, and the transmission rod 513 is fixedly installed at the end of the sealing rod 59 away from the sealing plate 58, so that when the device detects that the internal air pressure of the stirring shell 2 is leaking, the docking interface of the device will be automatically sealed to prevent special materials from failing to meet the required requirements after stirring, thereby improving the qualified rate of the device production.

[0022] A No. 1 spring is provided between the sealing plate 58 and the ventilation pipe 57. The sealing ring 510 is elastic, and the No. 1 spring drives the sealing plate 58 to reset.

[0023] When the present embodiment is working, the servo motor 53 is started, and the rotation of the output end of the servo motor 53 drives the rotating shaft 54 ​​to rotate toward the top, and the rotation of the rotating shaft 54 ​​drives the arc-shaped rotating rod 55 to rotate toward the top, and the rotation of the arc-shaped rotating rod 55 drives the cover plate 56 to rotate toward the top, and the rotation of the cover plate 56 contacts the top of the feed pipe 51 and covers the top of the feed pipe 51 to prevent dust from entering the interior of the stirring shell 2. When stirring is carried out inside the stirring shell 2, when the internal air pressure of the stirring shell 2 is reduced, after the air pressure is reduced, the sealing plate 58 is driven to move toward the direction close to the stirring shell 2 through the reset of the No. 1 spring, and the movement of the sealing plate 58 drives the sealing rod 59 to move toward the direction close to the stirring shell 2. The movement of 59 will drive the transmission rod 513 to move in the direction of the stirring shell 2. The movement of the transmission rod 513 will contact the triangular plate 512. The movement of the transmission rod 513 will drive the triangular plate 512 to move away from the connecting round rod 511. The movement of the triangular plate 512 will drive the connecting round rod 511 to move. The movement of the connecting round rod 511 will drive the sealing ring 510 to deform and tighten. After the sealing ring 510 is tightened, the joint between the feed pipe 51 and the cover plate 56 will be sealed, so that when the device detects that the internal air pressure of the stirring shell 2 is leaking, the docking interface of the device will be automatically sealed to prevent special materials from failing to meet the required requirements after stirring, thereby improving the qualified rate of the device production.

[0024] See also Figure 1 - Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a self-locking device for limiting the sealing device and a protective device for protecting the self-locking device are further provided on the top of the top cover 3, wherein the self-locking device comprises: a square tube 61, a transmission vertical rod 62, a pressure rod 63, two sliding plates 64, two U-shaped rods 65, a plug plate 66, an unlocking rod 67, a rotating rod 68 and a baffle 69, the square tube 61 is fixedly mounted on the top of the top cover 3, a square groove is provided on the surface of the square tube 61, the transmission vertical rod 62 slides through the inner and outer walls of the feed pipe 51, the pressure rod 63 is slidably mounted on the inner wall of the square groove, the two sliding plates 64 are both slidably mounted on the inner wall of the square tube 61, and one of the sliding plates 64 is fixedly mounted on the transmission vertical rod 62 The bottom of the square tube 61 is fixedly mounted on the bottom of the pressure rod 63, and the two U-shaped rods 65 are fixedly mounted on the bottom of the sliding plate 64. The plug plate 66 is slidably mounted on the inner wall of the U-shaped rod 65, so that the device will automatically limit the cover plate 56 after the closing is completed, without manual operation. The unlocking rod 67 rotates and passes through the inner and outer walls of the square tube 61. The rotating rod 68 is fixedly mounted on the side of the unlocking rod 67 close to the U-shaped rod 65, and the baffle 69 is fixedly mounted on the bottom of the plug plate 66, so that the pressure rod 63 no longer limits the cover plate 56, and the cover plate 56 can be quickly released from the limit. At the same time, the unlocking method of pressing and rotating can prevent the staff from accidentally touching the unlocking rod 67 to cause the limit to be released, thereby improving the safety of the device when in use.

[0025] A No. 2 spring is provided between the insert plate 66 and the U-shaped rod 65, and the rotating rod 68 contacts the baffle plate 69, and the insert plate 66 is driven to reset by the No. 2 spring.

[0026] A torsion spring is arranged between the unlocking rod 67 and the square tube 61 , and a No. 3 spring is arranged between the pressing rod 63 and the square tube 61 , and the No. 3 spring drives the pressing rod 63 to reset.

[0027] The protective device includes: an inflation tube 71, a piston 72, a connecting rod 74, a U-shaped vertical rod 75, an L-shaped rod 76 and a blocking plate 77. The inflation tube 71 is fixedly installed on the bottom of the inner wall of the square tube 61. Two circular holes are provided on the circumferential surface of the inflation tube 71. The piston 72 is slidably installed on the inner wall of the inflation tube 71. The connecting rod 74 is fixedly installed on the top of the piston 72. The U-shaped vertical rod 75 is fixedly installed on the top of the connecting rod 74, so that the speed of the transmission vertical rod 62 when moving to the top is reduced, so that the cover plate 56 has sufficient time to open, and the cover plate 56 is prevented from contacting the pressure rod 63 so that the cover plate 56 cannot be opened smoothly, thereby improving the stability of the device during operation. The L-shaped rod 76 is fixedly installed on the surface of the connecting rod 74, and the blocking plate 77 is fixedly installed at the bottom of the L-shaped rod 76, so that the moving speed is further reduced, thereby improving the practicality of the device.

[0028] A No. 4 spring 73 is provided between the piston 72 and the square tube 61 , and the blocking plate 77 is in contact with the circular hole, and the No. 4 spring 73 drives the piston 72 to reset.

[0029] When the present embodiment is working, the cover plate 56 rotates toward the bottom and contacts with the transmission vertical rod 62, the cover plate 56 rotates and drives the transmission vertical rod 62 to move toward the bottom, the transmission vertical rod 62 moves toward the bottom and drives one of the sliding plates 64 to move toward the bottom, one of the sliding plates 64 moves toward the bottom and drives one of the U-shaped rods 65 to move toward the bottom, one of the U-shaped rods 65 moves toward the bottom and drives the plug plate 66 to move toward the bottom, the plug plate 66 moves and drives another U-shaped rod 65 to move toward the bottom, the other U-shaped rod 65 moves and drives another sliding plate 64 to move toward the bottom, the other sliding plate 64 moves and drives the pressure rod 63 to move toward the bottom, the pressure rod 63 moves and contacts with the cover plate 56 and limits the cover plate 56, so that the device will automatically limit the cover plate 56 after the closing is completed, without manual operation, and the manual operation is not required. The unlocking lever 67 is pushed, and the unlocking lever 67 moves and drives the rotating rod 68 to move in the direction of the plug plate 66, and then the unlocking lever 67 is rotated counterclockwise. The unlocking lever 67 rotates and drives the rotating rod 68 to rotate toward the top. The rotating rod 68 rotates to contact the baffle 69 and drive the baffle 69 to move in the direction of the transmission vertical rod 62. The movement of the baffle 69 drives the plug plate 66 to move. After the plug plate 66 moves, it no longer contacts one of the sliding plates 64. Then, the pressure rod 63 is driven to move to the top through the No. 3 spring reset. After the pressure rod 63 moves, it no longer contacts the cover plate 56, so that the pressure rod 63 no longer limits the cover plate 56, and the cover plate 56 can be quickly released from the limit. At the same time, the unlocking method of pressing and rotating can prevent the staff from accidentally touching the unlocking lever 67 to cause the limit to be released, thereby improving the safety of the device when in use.

[0030] When the locking cam 75 is in the closed position, the locking cam 73 is in the closed position, and the locking cam 73 is in the closed position, so that the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam 73 is in the closed position, and the air in the locking cam

[0031] 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. A dust removal safety protection device for a mixing station, comprising a bracket (1), characterized in that: A stirring shell (2) is fixedly mounted on the top of the support (1), a top cover (3) is fixedly mounted on the top of the stirring shell (2), a feed port is provided on the surface of the top cover (3), a support frame (4) is fixedly mounted on the circumferential surface of the stirring shell (2), a sealing device is arranged on the top of the top cover (3), and a self-locking device for limiting the position of the sealing device and a protective device for protecting the self-locking device are also arranged on the top of the top cover (3), wherein the sealing device comprises: a feed pipe (51), two clamping plates (52), a servo motor (53), a rotating shaft (54), an arc-shaped rotating rod (55) and a cover plate (56), wherein The feed pipe (51) is fixedly mounted on the top of the top cover (3), the two clamping plates (52) are fixedly mounted on the top of the top cover (3), the rotating shaft (54) is rotatably mounted between the clamping plates (52), the servo motor (53) is fixedly mounted on the top of the top cover (3), the output end of the servo motor (53) rotates and penetrates the inner and outer walls of the clamping plates (52), the output end of the servo motor (53) is fixedly mounted on the surface of the rotating shaft (54), the arc-shaped rotating rod (55) is fixedly mounted on the circumferential surface of the rotating shaft (54), and the cover plate (56) is fixedly mounted on one end of the arc-shaped rotating rod (55) away from the rotating shaft (54).

2. A dust removal safety protection device for a mixing station according to claim 1, characterized in that: A ventilation pipe (57) is fixedly mounted on the circumferential surface of the feed pipe (51), a sealing plate (58) is slidably mounted on the inner wall of the ventilation pipe (57), a sealing rod (59) is slidably penetrated through the inner and outer walls of the ventilation pipe (57), a sealing ring (510) is fixedly mounted on the circumferential surface of the feed pipe (51), and the sealing device further comprises: a connecting round rod (511), a triangular plate (512) and a transmission rod (513), the connecting round rod (511) is fixedly penetrated through one end of the sealing ring (510), the connecting round rod (511) is slidably penetrated through the other end of the sealing ring (510), the triangular plate (512) is fixedly mounted on the bottom of the connecting round rod (511), and the transmission rod (513) is fixedly mounted on one end of the sealing rod (59) away from the sealing plate (58).

3. A dust removal safety protection device for a mixing station according to claim 2, characterized in that: A No. 1 spring is provided between the sealing plate (58) and the ventilation pipe (57), and the sealing ring (510) is elastic.

4. A dust removal safety protection device for a mixing station according to claim 3, characterized in that: The self-locking device comprises: a square tube (61), a transmission vertical rod (62), a pressure rod (63), two sliding plates (64), two U-shaped rods (65), a plug plate (66), an unlocking rod (67), a rotating rod (68) and a baffle (69), wherein the square tube (61) is fixedly mounted on the top of the top cover (3), a square groove is formed on the surface of the square tube (61), the transmission vertical rod (62) slides through the inner and outer walls of the feed tube (51), the pressure rod (63) is slidably mounted on the inner wall of the square groove, and the two sliding plates (64) are slidably mounted on the square tube (61). The inner wall of the square tube (61), one of the sliding plates (64) is fixedly mounted on the bottom of the transmission vertical rod (62), the other sliding plate (64) is fixedly mounted on the bottom of the pressure rod (63), the two U-shaped rods (65) are fixedly mounted on the bottom of the sliding plate (64), the plug plate (66) is slidably mounted on the inner wall of the U-shaped rod (65), the unlocking rod (67) rotates and penetrates the inner and outer walls of the square tube (61), the rotating rod (68) is fixedly mounted on a side of the unlocking rod (67) close to the U-shaped rod (65), and the baffle (69) is fixedly mounted on the bottom of the plug plate (66).

5. A dust removal safety protection device for a mixing station according to claim 4, characterized in that: A No. 2 spring is provided between the plug plate (66) and the U-shaped rod (65), and the rotating rod (68) is in contact with the baffle plate (69).

6. A dust removal safety protection device for a mixing station according to claim 5, characterized in that: A torsion spring is provided between the unlocking rod (67) and the square tube (61), and a No. 3 spring is provided between the pressing rod (63) and the square tube (61).

7. A dust removal safety protection device for a mixing station according to claim 6, characterized in that: The protective device comprises: an inflation tube (71), a piston (72), a connecting rod (74), a U-shaped vertical rod (75), an L-shaped rod (76) and a blocking plate (77); the inflation tube (71) is fixedly mounted on the bottom of the inner wall of the square tube (61); two circular holes are provided on the circumferential surface of the inflation tube (71); the piston (72) is slidably mounted on the inner wall of the inflation tube (71); the connecting rod (74) is fixedly mounted on the top of the piston (72); the U-shaped vertical rod (75) is fixedly mounted on the top of the connecting rod (74); the L-shaped rod (76) is fixedly mounted on the surface of the connecting rod (74); and the blocking plate (77) is fixedly mounted on the bottom of the L-shaped rod (76).

8. A dust removal safety protection device for a mixing station according to claim 7, characterized in that: A No. 4 spring (73) is provided between the piston (72) and the square tube (61), and the blocking plate (77) is in contact with the circular hole.

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