CN217149709U - Built-in driving type pressure screen - Google Patents

Abstract

The utility model discloses a built-in drive type pressure screen. It includes base, upper cover, upper cover hanger, casing, screen drum, pressure screen spindle, transmission seat, permanent magnet motor, upper bearing chamber, lower bearing chamber, shaft end gland, water retaining device, upper flange and The lower flange, the shell is fixed on the base, the upper cover is arranged on the upper part of the shell, the upper cover hanger is connected with the upper cover, the screen drum and the transmission seat are respectively installed in the shell, the permanent magnet motor is matched with the transmission seat, and the pressure The main shaft of the screen is matched and connected with the hollow drive shaft of the rotor of the permanent magnet motor. The utility model has the characteristics of compact structure, smaller volume, low manufacturing cost, convenient operation, maintenance and assembly.

Description

Built-in driven pressure screen

technical field

The utility model relates to a special equipment for papermaking machinery, in particular to a pressure screen.

Background technique

The existing pressure screen drive usually requires belts and pulleys to link the motor with the pressure screen main shaft, and the main shaft also needs a bearing and bearing chamber positioning structure. This design requires two sets of bearings and bearing chamber positioning structures. The language is too complicated, not only the pressure screen is large in size, the material used is large, but also the manufacturing cost is high.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a built-in driving pressure screen with compact structure, smaller volume, low manufacturing cost and convenient operation, maintenance and assembly.

In order to achieve the above purpose, the utility model is achieved through the following technical solutions. Built-in driven pressure screen, including base, upper cover, upper cover spreader, shell, screen drum, pressure screen spindle, transmission seat, permanent magnet motor, upper bearing chamber, lower bearing chamber, shaft end gland, water retaining device , upper flange and lower flange, the permanent magnet motor includes permanent magnet motor rotor and permanent magnet motor stator, the housing is fixed on the base, the upper cover is set on the upper part of the housing, the upper cover hanger is connected with the upper cover, the screen drum and The transmission seats are respectively installed in the shell, the permanent magnet motor is matched with the transmission seat, the main shaft of the pressure screen is connected with the hollow drive shaft of the rotor of the permanent magnet motor, the shaft end gland is arranged at the end of the main shaft of the pressure screen, and the water retaining device is provided. In the transmission seat, the upper bearing chamber is fixed on the transmission seat through the upper flange, and the lower bearing chamber is fixed on the transmission seat through the lower flange.

The built-in drive type pressure screen, its water retaining device includes an upper water retaining plate, a water retaining ring, a mechanical seal seat and a mechanical seal, the mechanical sealing seat is fixed on the upper part of the transmission seat, and the upper water retaining plate is arranged in the upper bearing of the transmission seat. In the upper part of the chamber, the water blocking ring is arranged on the side of the upper bearing chamber in the transmission seat, and the mechanical seal is arranged above the upper water blocking plate.

The built-in drive type pressure screen has a zigzag structure on its upper flange, and is also provided with water blocking ring drainage holes in the periphery, and the water blocking ring drainage holes correspond to the water blocking ring drainage holes one by one.

In the built-in drive type pressure screen, the cooperation between the main shaft of the pressure screen and the hollow drive shaft of the rotor of the permanent magnet motor is a transition fit.

The said built-in drive type pressure screen has 2-16 serrations on its upper flange, and 2-16 water blocking ring drainage holes.

Compared with the prior art, the utility model has the following advantages: (1) Because the pressure screen is driven by a permanent magnet motor directly connected to the pressure screen rotor, the bearing and the bearing chamber are omitted compared with the existing pressure screen, and the belt pulley is added. , and the belt tensioning mechanism, these parts are the most difficult and technically demanding parts in the pressure screen parts, which can reduce the cost by nearly 10%; (2) Because the permanent magnet motor is placed in the pressure screen transmission, the pressure screen The bottom can be shortened by 40%, and its floor space can also be saved by 40%; (3) The built-in drive of this pressure screen utilizes the advantages of small size, high power per unit weight, high power efficiency, and large pulse torque of the permanent magnet motor. The pressure screen shaft is directly installed into the hollow drive shaft of the permanent magnet motor, and the permanent magnet motor is used to directly drive the pressure screen rotor. Since the bearing and bearing chamber structure of the pressure screen main shaft and the pulley are omitted, the motor seat, The tightening structure of the motor and the motor casing reduce the number of parts and simplify the assembly difficulty; (4) It is because the fixed flange of the bearing seat of the transmission seat is a zigzag structure, and there are water blocking ring drainage holes in the periphery. The drainage holes of the water ring correspond one by one. When there is water in the upper water retaining plate, the water retaining ring makes the water in the upper water retaining plate drain along these water holes, and these water holes can also pass through the oil injection pipe and the mechanical seal cooling water pipe; ( 5) It is because when the transmission needs to be maintained, the fixing bolts are removed, and the transmission seat can be lifted vertically upward from the casing, which is very convenient for maintenance; (7) In the new permanent magnet transmission pressure screen structure, the main shaft of the pressure screen is installed in the hollow shaft of the permanent magnet motor, and the permanent magnet motor and the transmission seat are installed together, only It is necessary to ensure that the dimensions of the motor hollow shaft and the main shaft meet the design requirements. After assembly, the concentricity of the pressure screen main shaft can meet the use. The shaft end gland can limit the vertical movement of the pressure screen main shaft, and the axial force of the pressure screen main shaft is not large. , mainly the gravity of the main shaft and the rotor itself, using the axial bearing capacity of the permanent magnet motor to ensure the normal operation of the pressure screen main shaft; (8) When the permanent magnet motor is installed with the transmission seat, the transmission seat is vertically Bottom assembly, and the bearing chamber rotates 45 degrees in the transmission seat, ensure that the upper and lower bearing chambers are on both sides of the fixed flange of the bearing chamber of the transmission seat, avoid the fixed bearing capacity of one side being all gathered on the screw, and ensure that the main shaft has sufficient axial Carrying capacity.

Description of drawings

Figure 1 is a schematic diagram of the main structure of the built-in drive pressure screen of the present invention.

Figure 2 is a schematic diagram of the matching connection structure of the main shaft of the built-in drive type pressure screen and the rotor of the permanent magnet motor of the present invention.

Figure 3 is a schematic diagram of the zigzag structure of the upper flange of the built-in drive pressure screen of the present invention.

Detailed ways

The embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Embodiment 1: As shown in Figure 1, the built-in drive pressure screen includes a base 1, an upper cover 2, an upper cover hanger 3, a casing 4, a screen drum 5, a pressure screen spindle 6, a transmission seat 7, a permanent magnet motor 8. The upper bearing chamber 9, the lower bearing chamber 10, the shaft end gland 11, the water blocking device 12, the upper flange 13 and the lower flange 14, the permanent magnet motor 8 includes the permanent magnet motor rotor 15 and the permanent magnet motor stator 16, The shell 4 is fixed on the base 1, the upper cover 2 is arranged on the upper part of the shell 4, the upper cover hanger 3 is connected with the upper cover 2, the screen drum 5 and the transmission seat 7 are respectively installed in the shell 4, and the permanent magnet motor 8 is connected to the upper cover 2. The transmission base 7 is matched and connected. As shown in Figure 2, the pressure screen main shaft 6 is matched with the hollow drive shaft 17 of the permanent magnet motor rotor 15. The shaft end gland 11 is provided at the end of the pressure screen main shaft 6, and the water blocking device 12 is provided. In the transmission base 7, the upper bearing chamber 9 is fixed on the transmission base 7 through the upper flange 13, the lower bearing chamber 10 is fixed on the transmission base 7 through the lower flange 14, and the water blocking device 12 includes an upper water blocking plate 18, The water ring 19, the mechanical seal seat 20 and the mechanical seal 21, the mechanical seal seat 20 is fixed on the upper part of the transmission seat 7, the upper water retaining plate 18 is arranged on the upper part of the upper bearing chamber 9 in the transmission seat 7, and the water retaining ring 19 is arranged on the transmission seat 7. On the side of the upper bearing chamber 9, the mechanical seal 21 is arranged above the upper water retaining plate 18. As shown in FIG. 3, the upper flange 13 is a zigzag structure. The water ring drainage holes 22 are in one-to-one correspondence with the drainage holes of the water blocking ring 19 .

Example 2: The fit between the pressure screen main shaft 6 and the hollow drive shaft 17 of the permanent magnet motor rotor 15 is a transition fit, such as H7/h7, and the rest are the same as in Example 1.

Embodiment 3: The number of saw teeth on the upper flange 13 is 4, the number of water blocking ring drainage holes 22 is 4, and the rest are the same as Embodiment 1 or Embodiment 2.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the protection scope of the present invention.

Claims (5)

1. A built-in drive type pressure screen, characterized in that: it comprises a base (1), an upper cover (2), an upper cover spreader (3), a casing (4), a screen drum (5), a pressure screen main shaft (6), transmission seat (7), permanent magnet motor (8), upper bearing chamber (9), lower bearing chamber (10), shaft end gland (11), water blocking device (12), upper flange ( 13) and the lower flange (14), the permanent magnet motor (8) includes a permanent magnet motor rotor (15) and a permanent magnet motor stator (16), the housing (4) is fixed on the base (1), and the upper cover (2) ) is arranged on the upper part of the casing (4), the upper cover spreader (3) is connected with the upper cover (2), the screen drum (5) and the transmission seat (7) are respectively installed in the casing (4), and the permanent magnet motor ( 8) It is matched with the transmission seat (7), the pressure screen main shaft (6) is matched with the hollow drive shaft (17) of the permanent magnet motor rotor (15), and the shaft end gland (11) is arranged on the pressure screen main shaft (6) The water blocking device (12) is arranged in the transmission seat (7), the upper bearing chamber (9) is fixed on the transmission seat (7) through the upper flange (13), and the lower bearing chamber (10) is fixed on the transmission seat (7) through the upper flange (13). The flange (14) is fixed on the transmission seat (7). 2. The built-in driven pressure screen according to claim 1, characterized in that: the water blocking device (12) comprises an upper water blocking plate (18), a water blocking ring (19), a mechanical seal seat (20) and a mechanical seal (21), the mechanical seal seat (20) is fixed on the upper part of the transmission seat (7), the upper water retaining plate (18) is arranged on the upper part of the upper bearing chamber (9) in the transmission seat (7), and the water blocking ring (19) is provided. On the side of the upper bearing chamber (9) in the transmission seat (7), a mechanical seal (21) is arranged above the upper water retaining plate (18). 3. The built-in driven pressure screen according to claim 1 or 2, characterized in that: the upper flange (13) is a zigzag structure, and a water blocking ring drainage hole (22) is also opened at the periphery, and the water blocking ring drains the water. The holes (22) correspond to the drainage holes of the water blocking ring (19) one by one. 4. The built-in drive pressure screen according to claim 1 or 2, characterized in that: the cooperation between the main shaft (6) of the pressure screen and the hollow drive shaft (17) of the permanent magnet motor rotor (15) is a transition fit. 5 . The built-in driven pressure screen according to claim 3 , wherein the number of serrations on the upper flange ( 13 ) is 2-16, and the number of water blocking ring drainage holes ( 22 ) is 2-16. 6 .

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