Spindle air-tight sealing mechanism of pulverizer

Abstract

The utility model relates to the technical field of pulverizer devices, in particular to a main shaft air sealing mechanism of a pulverizer, which comprises a pulverizer main shaft, an air sealing device, an air pipe, a mounting component and an auxiliary component, an air sealing device is mounted on the crusher main shaft, an air groove for air sealing is formed in the air sealing device, a mounting block is fixedly arranged on the outer wall of the air sealing device, a square groove is formed in the side wall of the mounting block, a vent hole is formed in the bottom end of the square groove, and the vent hole is communicated with the air groove in the air sealing device; the air pipe is connected with the air sealing device through the mounting assembly and the auxiliary assembly; the position of the positioning block is limited through the first sleeve shell and the second sleeve shell, stable insertion connection of the air pipe and the vent hole is guaranteed, the nut is in threaded connection with the first half-threaded pipe and the second half-threaded pipe, the positions of the first sleeve shell and the second sleeve shell are fixed, then the air pipe is detachably connected to the air sealing device, and an air groove of the air sealing device is inflated to form air sealing. And maintenance operation of the airtight sealing device is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of crusher devices, in particular to a main shaft air sealing mechanism of a crusher. Background Technique

[0002] For the Chinese patent document with the publication number of CN210397719U, it discloses a main shaft air sealing device of a crusher, which includes a main shaft. A cylindrical shaft sleeve is sleeved on the main shaft. A baffle is arranged on the inner side of the shaft sleeve facing the main shaft. Along the axis direction of the main shaft, a ring-shaped wool felt for sealing, a ring-shaped pressing plate and a cover plate are sequentially sleeved on the shaft sleeve from inside to outside. The inner side of the pressing plate abuts against the shaft sleeve. Two annular receiving grooves are opened on the inner side of the pressing plate. The two receiving grooves are respectively arranged on one end face of the pressing plate, and a first oil seal and a second oil seal are respectively arranged in the two receiving grooves. An annular air groove is opened between the two receiving grooves. The air groove is located on the inner side wall of the pressing plate. A ventilation hole communicating with the air groove is arranged on the pressing plate. The utility model adds an air groove between two oil seals and fills high-pressure nitrogen into it, so as to form a stable air sealing structure; and improves the structural design to avoid the occurrence of the situation that the oil seal is accelerated in aging and deformation due to uneven force.

[0003] However, in the above scheme and the prior art, an air sealing device is installed on the main shaft of the crusher. An air groove is arranged in the air sealing device, and air is filled into the air groove through an air pipe to form an air seal. The existing air pipe is usually fixedly installed on the air sealing device, which is not convenient to disassemble and brings inconvenience to the maintenance of the air sealing device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a main shaft air sealing mechanism of a crusher to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A main shaft air sealing mechanism of a crusher includes a crusher main shaft, an air sealing device, an air pipe, a mounting assembly and an auxiliary assembly; The air sealing device is installed on the crusher main shaft. An air groove for air sealing is arranged in the air sealing device. An installation block is fixedly arranged on the outer wall of the air sealing device. A square groove is opened on the side wall of the installation block, and a ventilation hole is opened at the bottom of the square groove. The ventilation hole communicates with the air groove in the air sealing device; The air pipe is connected with the air sealing device through the mounting assembly and the auxiliary assembly.

[0006] Preferably, the mounting assembly includes a gasket, a positioning block, a card slot, a first housing, a second housing, a first magnet, a second magnet, a first half-threaded tube, a second half-threaded tube, and a nut; the gasket is snap-fitted in the square groove, the positioning block is fixedly sleeved on the outer wall of the air pipe, and the card slots are symmetrically arranged on both side walls of the mounting block; the first housing and the second housing are symmetrically arranged, arc grooves for snap-fitting with the air pipe are provided on the first housing and the second housing, first magnets are symmetrically and fixedly arranged on the inner wall of the first housing, and second magnets are symmetrically and fixedly arranged on the inner wall of the second housing; the first half-threaded tube is fixedly arranged on the side wall of the first housing, and the second half-threaded tube is fixedly arranged on the side wall of the second housing.

[0007] Preferably, the auxiliary assembly includes a fixing plate, a slot, an elastic hook, a limiting plate, a hook groove, a plug rod, and a plug ring; the fixing plate is fixedly arranged on the side wall of the first housing, slots are symmetrically arranged on the fixing plate, and elastic hooks are fixedly arranged on the side wall of the fixing plate; hook grooves are provided on the limiting plate, plug rods are symmetrically and fixedly arranged on the side wall of the limiting plate, and plug rings are symmetrically and fixedly arranged on the peripheral wall of the air pipe.

[0008] Preferably, the gasket is snap-fitted with the positioning block, the gasket is inserted into the air pipe, the positioning block is embedded in the square groove, and the air pipe is inserted into the ventilation hole; both the first housing and the second housing are snap-fitted with the mounting block and the positioning block, and the side walls of the first housing and the second housing are snap-fitted.

[0009] Preferably, the card slots, the first magnet, and the second magnet are arranged in corresponding positions and have the same number of sets, the first magnet and the second magnet attract each other and are both inserted into the card slots; the first half-threaded tube, the second half-threaded tube, and the nut are arranged in corresponding positions and have the same number of sets, the inner walls of the first half-threaded tube and the second half-threaded tube are both snap-fitted with the air pipe, and the nut is threadedly connected to the first half-threaded tube and the second half-threaded tube.

[0010] Preferably, the slots, the plug rods, and the plug rings are arranged in corresponding positions and have the same number of sets, the plug rods are inserted into the slots and the plug rings, and the plug rods are snap-fitted with the nut; the fixing plate is snap-fitted with the limiting plate, and the elastic hook and the hook groove are snap-fitted.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] By limiting and positioning the position of the positioning block through the first housing and the second housing, the stable insertion of the air pipe into the ventilation hole is ensured. The nut is threadedly connected to the first half-threaded tube and the second half-threaded tube to fix the positions of the first housing and the second housing, thereby realizing the detachable connection of the air pipe to the airtight device and inflating the airtight device's air groove to form an airtight seal, which is convenient for the maintenance operation of the airtight device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present utility model;

[0014] Figure 2 This is a partially enlarged view of the present utility model Figure 1 ;

[0015] Figure 3 This is an exploded view of the connection of the trachea structure of the present utility model;

[0016] Figure 4 This is a schematic diagram of the connection of the first housing structure of the present utility model;

[0017] Figure 5 This is a schematic diagram of the connection of the second housing structure of the present utility model;

[0018] Figure 6 This is a schematic diagram of the connection of the limiting plate structure of the present utility model.

[0019] In the figure: the main shaft 1 of the crusher, the airtight device 2, the trachea 3, the mounting block 4, the square groove 5, the ventilation hole 6, the gasket 7, the positioning block 8, the card slot 9, the first housing 10, the second housing 11, the first magnetic block 12, the second magnetic block 13, the first half-threaded pipe 14, the second half-threaded pipe 15, the nut 16, the fixing plate 17, the slot 18, the elastic hook 19, the limiting plate 20, the hook groove 21, the insertion rod 22, the insertion ring 23. Specific embodiments

[0020] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0021] Please refer to Figures 1-6 , the present utility model provides embodiments of the following three preferred solutions:

[0022] Embodiment 1: A main shaft gas sealing mechanism for a crusher, comprising a crusher main shaft 1, a gas sealing device 2, a gas pipe 3, a mounting assembly and an auxiliary assembly; a gas sealing device 2 is installed on the crusher main shaft 1, a gas groove for gas sealing is provided inside the gas sealing device 2, a mounting block 4 is fixedly provided on the outer wall of the gas sealing device 2, a square groove 5 is provided on the side wall of the mounting block 4, and a ventilation hole 6 is provided at the bottom of the square groove 5, and the ventilation hole 6 communicates with the gas groove inside the gas sealing device 2; the gas pipe 3 is connected to the gas sealing device 2 through the mounting assembly and the auxiliary assembly; the mounting assembly includes a sealing gasket 7, a positioning block 8, a clamping groove 9, a first sleeve 10, a second sleeve 11, a first magnetic block 12, a second magnetic block 13, a first half-threaded pipe 14, a second half-threaded pipe 15 and a nut 16; the auxiliary assembly includes a fixing plate 17, a slot 18, an elastic hook 19, a limiting plate 20, a hook groove 21, a plug rod 22 and a plug ring 23.

[0023] During use, after the gas pipe 3 is inserted into the ventilation hole 6, the position of the positioning block 8 is limited by the first sleeve 10 and the second sleeve 11 to ensure the stable insertion of the gas pipe 3 into the ventilation hole 6. The nut 16 is threadedly connected to the first half-threaded pipe 14 and the second half-threaded pipe 15 to fix the positions of the first sleeve 10 and the second sleeve 11, thereby realizing the detachable connection of the gas pipe 3 to the gas sealing device 2 and inflating the gas groove of the gas sealing device 2 to form a gas seal, which is convenient for the maintenance operation of the gas sealing device 2.

[0024] Embodiment 2: On the basis of Embodiment 1, the sealing gasket 7 in the mounting assembly is clamped in the square groove 5, the positioning block 8 is fixedly sleeved on the outer wall of the gas pipe 3, and the clamping grooves 9 are symmetrically provided on both side walls of the mounting block 4; the first sleeve 10 and the second sleeve 11 are symmetrically arranged, and arc grooves for clamping the gas pipe 3 are provided on the first sleeve 10 and the second sleeve 11. The first magnetic blocks 12 are symmetrically and fixedly provided on the inner wall of the first sleeve 10, and the second magnetic blocks 13 are symmetrically and fixedly provided on the inner wall of the second sleeve 11; the first half-threaded pipe 14 is fixedly provided on the side wall of the first sleeve 10, and the second half-threaded pipe 15 is fixedly provided on the side wall of the second sleeve 11; the sealing gasket 7 is clamped with the positioning block 8, the sealing gasket 7 is inserted into the gas pipe 3, the positioning block 8 is embedded in the square groove 5, and the gas pipe 3 is inserted into the ventilation hole 6; both the first sleeve 10 and the second sleeve 11 are clamped with the mounting block 4 and the positioning block 8, and the side walls of the first sleeve 10 and the second sleeve 11 are clamped; the clamping grooves 9, the first magnetic blocks 12 and the second magnetic blocks 13 are arranged in corresponding positions and have the same number of sets, and the first magnetic blocks 12 and the second magnetic blocks 13 attract each other and are both inserted into the clamping grooves 9; the first half-threaded pipe 14, the second half-threaded pipe 15 and the nut 16 are arranged in corresponding positions and have the same number of sets, the inner walls of the first half-threaded pipe 14 and the second half-threaded pipe 15 are both clamped with the gas pipe 3, and the nut 16 is threadedly connected to the first half-threaded pipe 14 and the second half-threaded pipe 15.

[0025] In use, after the end of the air pipe 3 is inserted with the sealing gasket 7, it is inserted into the ventilation hole 6 until the positioning block 8 is fitted into the square groove 5. At this time, both sides of the sealing gasket 7 are respectively clamped with the bottom wall of the square groove 5 and the positioning block 8 to ensure the airtightness of the connection of the air pipe 3. Then, the first housing 10 and the second housing 11 are installed, so that the first magnetic block 12 and the second magnetic block 13 are respectively inserted into the card slots 9 from both sides until the side walls of the first housing 10 and the second housing 11 are clamped. At this time, the first magnetic block 12 and the second magnetic block 13 attract each other, and the inner walls of the first half-threaded pipe 14 and the second half-threaded pipe 15 are both clamped with the air pipe 3. Then, the nut 16 is threadedly connected to the first half-threaded pipe 14 and the second half-threaded pipe 15 to complete the preliminary installation of the air pipe 3.

[0026] Embodiment 3: On the basis of Embodiment 2, the fixing plate 17 in the auxiliary component is fixedly arranged on the side wall of the first housing 10. Slots 18 are symmetrically formed on the fixing plate 17, and elastic hooks 19 are fixedly arranged on the side wall of the fixing plate 17; a hook groove 21 is formed on the limiting plate 20, insertion rods 22 are symmetrically and fixedly arranged on the side wall of the limiting plate 20, and insertion rings 23 are symmetrically and fixedly arranged on the peripheral wall of the air pipe 3; the positions of the slots 18, the insertion rods 22 and the insertion rings 23 correspond to each other and the number of sets is the same. The insertion rods 22 are inserted into the slots 18 and the insertion rings 23, and the insertion rods 22 are clamped with the nut 16; the fixing plate 17 is clamped with the limiting plate 20, and the elastic hooks 19 and the hook grooves 21 are clamped.

[0027] In use, after the preliminary installation of the air pipe 3 is completed, the insertion rods 22 are sequentially inserted into the slots 18 and the insertion rings 23 until the fixing plate 17 is clamped with the limiting plate 20 and the elastic hooks 19 and the hook grooves 21 are clamped to fix the positions of the insertion rods 22. At this time, the insertion rods 22 are clamped with the nut 16 to prevent the nut 16 from loosening and falling off during use, further improving the installation stability of the air pipe 3.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A main shaft air sealing mechanism for a pulverizer, characterized in that: The invention comprises a pulverizer main shaft (1), an air sealing device (2), an air pipe (3), a mounting assembly and an auxiliary assembly; the pulverizer main shaft (1) is mounted with an air sealing device (2), an air groove for air sealing is arranged in the air sealing device (2), a mounting block (4) is fixedly arranged on the outer wall of the air sealing device (2), a square groove (5) is arranged on the side wall of the mounting block (4), a vent hole (6) is arranged at the bottom end of the square groove (5), and the vent hole (6) is connected to the air groove in the air sealing device (2); the air pipe (3) is connected to the air sealing device (2) through the mounting assembly and the auxiliary assembly; The installation assembly comprises a sealing gasket (7), a positioning block (8), a slot (9), a first housing (10), a second housing (11), a first magnetic block (12), a second magnetic block (13), a first half threaded tube (14), a second half threaded tube (15) and a nut (16); the sealing gasket (7) is snap-fitted into the square groove (5); the positioning block (8) is fixedly sleeved on the outer wall of the air pipe (3); the slots (9) are symmetrically arranged on the two side walls of the installation block (4); the first housing ( The first shell (10) and the second shell (11) are symmetrically arranged, and arc grooves for engaging with the air pipe (3) are provided on the first shell (10) and the second shell (11). A first magnetic block (12) is symmetrically fixedly arranged on the inner wall of the first shell (10), and a second magnetic block (13) is symmetrically fixedly arranged on the inner wall of the second shell (11); the first half-threaded tube (14) is fixedly arranged on the side wall of the first shell (10), and the second half-threaded tube (15) is fixedly arranged on the side wall of the second shell (11).

2. The main shaft air sealing mechanism of a pulverizer according to claim 1, characterized in that: The auxiliary component comprises a fixing plate (17), a slot (18), an elastic hook (19), a limiting plate (20), a hook slot (21), an insert rod (22) and an insert ring (23); the fixing plate (17) is fixedly arranged on the side wall of the first shell (10), the fixing plate (17) is symmetrically provided with a slot (18), and the elastic hook (19) is fixedly arranged on the side wall of the fixing plate (17); the limiting plate (20) is provided with a hook slot (21), the insert rod (22) is symmetrically fixedly arranged on the side wall of the limiting plate (20), and the insert ring (23) is symmetrically fixedly arranged on the peripheral wall of the trachea (3).

3. The main shaft air sealing mechanism of a pulverizer according to claim 1, characterized in that: The sealing gasket (7) is clamped with the positioning block (8), the sealing gasket (7) is plugged with the air pipe (3), the positioning block (8) is embedded with the square groove (5), and the air pipe (3) is plugged with the vent hole (6); the first shell (10) and the second shell (11) are both clamped with the mounting block (4) and the positioning block (8), and the side wall of the first shell (10) is clamped with the side wall of the second shell (11).

4. The main shaft air sealing mechanism of a pulverizer according to claim 1, characterized in that: The slot (9), the first magnetic block (12) and the second magnetic block (13) are arranged at corresponding positions and are arranged in the same number of groups; the first magnetic block (12) and the second magnetic block (13) attract each other and are both inserted into the slot (9); the first half threaded tube (14), the second half threaded tube (15) and the nut (16) are arranged at corresponding positions and are arranged in the same number of groups; the inner walls of the first half threaded tube (14) and the second half threaded tube (15) are both engaged with the air pipe (3); and the nut (16) is threadedly connected to the first half threaded tube (14) and the second half threaded tube (15).

5. The main shaft air sealing mechanism of a pulverizer according to claim 2, characterized in that: The slot (18), the insert rod (22) and the insert ring (23) are arranged at corresponding positions and have the same number of groups; the insert rod (22) is plugged into the slot (18) and the insert ring (23); the insert rod (22) is clamped into the nut (16); the fixing plate (17) is clamped into the limiting plate (20); and the elastic clamping hook (19) is clamped into the hook groove (21).

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