Back-to-back shearing structure and pulping machine

Abstract

The back-to-back shearing structure comprises an upper dispersion assembly and a lower dispersion assembly, each dispersion assembly comprises a dispersion rotor and a dispersion stator, the dispersion rotors of the two dispersion assemblies are arranged back to back, and the dispersion stators of the two dispersion assemblies are arranged face to face; the dispersion rotor is provided with a rotor base plate, a rotor ring and dispersion blades are arranged on the front face of the rotor base plate, the dispersion blades are located on the inner side of the rotor ring, a gap is formed between the outer ends of the dispersion blades and the rotor ring, and rotor dispersion grooves are formed in the rotor ring; the dispersion stator is provided with a stator base plate, a stator ring is arranged on the front face of the stator base plate, and stator dispersion grooves are formed in the stator ring. The rotor substrate of the dispersion rotor can forcibly guide the slurry, so that the dispersion effect and the dispersion efficiency can be improved; and the dispersing blades are arranged in the rotor ring and can drive the slurry to quickly pass through the shearing channel during rotation, so that the shearing frequency in unit time is increased, and the slurry making efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pulping equipment technology, and in particular to a back-to-back shearing structure and a pulping machine. Background Technology

[0002] In the field of slurry preparation, slurry mixers utilize the high-speed rotation of the rotor to generate shear force between the rotor and the stator, which fully disperses the liquid before it enters the mixing chamber and mixes it thoroughly with the powder, thereby forming a slurry with high concentration and high viscosity.

[0003] Most current pulp dispersion devices use a single axial shear or a single radial shear structure. This shear structure has relatively weak conveying capacity, fewer shearing times in the same time period, and longer pulping time, which affects the pulping efficiency of the pulper. Utility Model Content

[0004] To address the shortcomings of existing slurry dispersion devices, the applicant provides a back-to-back shearing structure and slurry maker with a reasonable structure, which improves conveying capacity, increases the number of shearing operations, and improves slurry making efficiency.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A back-to-back shearing structure includes two sets of dispersing components, each set of dispersing components including a dispersing rotor and a dispersing stator. The dispersing rotors of the two sets of dispersing components are arranged back-to-back, and the dispersing stators are arranged face-to-face.

[0007] The dispersing rotor is provided with a rotor base plate, and a rotor ring and dispersing blades are provided on the front side of the rotor base plate. The dispersing blades are located inside the rotor ring, and there is a gap between the outer end of the dispersing blades and the rotor ring. A rotor dispersing groove is provided on the rotor ring.

[0008] The stator is provided with a stator base plate, a stator ring is provided on the front side of the stator base plate, and a stator dispersion groove is provided on the stator ring; a central channel for the flow of liquid is opened in the center of the stator base plate.

[0009] The rotor rings of the distributed rotor extend between two adjacent stator rings;

[0010] The lower set of dispersing rotors has its front side facing down and its back side facing up, while the upper set of dispersing rotors has its front side facing up and its back side facing down. A buffer cavity is formed between the rotor substrates of the two sets of dispersing rotors.

[0011] The stator of the lower dispersion assembly is located below the dispersion rotor with its front facing upwards, while the stator of the upper dispersion assembly is located above the dispersion rotor with its front facing downwards.

[0012] As a further improvement to the above technical solution:

[0013] The rotor substrate has several back blades on its back side, which are located in the buffer cavity.

[0014] A sleeve is provided in the center of the rotor base plate, and the sleeve extends axially from the front and back of the rotor base plate; the sleeves of the upper and lower sets of dispersed rotors abut against each other.

[0015] The axial height of the back blades is less than the height of the sleeve extending from the back; the outer end of the back blades extends to the outer side of the rotor base plate, and there is a certain gap between the inner end and the sleeve; the back blades are tilted to one side at a certain angle from the outside to the inside relative to the radial line.

[0016] Several dispersing blades are arranged between the rotor ring and the sleeve, and the axial height of the rotor ring and the dispersing blades is approximately equal to the height of the sleeve extending from the front.

[0017] The dispersing blades include connecting blades and separating blades, which are arranged at intervals. The inner end of the dispersing blades is connected to the sleeve, and there is a certain distance between the inner end of the separating blades and the sleeve.

[0018] The rotor dispersion slots of the dispersed rotor and the stator dispersion slots of the dispersed stator are straight slots.

[0019] The rotor dispersion slots of the dispersed rotor and the stator dispersion slots of the dispersed stator are inclined slots, and the inclination directions of the rotor dispersion slots and the stator dispersion slots are opposite; the rotor dispersion slots are inclined slots with the same inclination direction from the outside to the inside as the rotation direction, and the stator dispersion slots are inclined slots with the opposite inclination direction from the outside to the inside as the rotation direction; or, the rotor dispersion slots are inclined slots with the opposite inclination direction from the outside to the inside as the rotation direction, and the stator dispersion slots are inclined slots with the same inclination direction from the outside to the inside as the rotation direction.

[0020] A pulping machine has a housing assembly containing a liquid inlet chamber, a dispersion chamber, a mixing chamber, and a powder inlet chamber. The housing assembly has a liquid inlet connected to the liquid inlet chamber and a liquid outlet connected to the mixing chamber. The dispersion chamber is provided with the aforementioned back-to-back shearing structure.

[0021] As a further improvement to the above technical solution:

[0022] The mixing chamber is equipped with a mixing rotor and a mixing stator, and the powder inlet chamber is equipped with a powder conveying rotor and a dispersing rotor. The mixing rotor and the powder conveying rotor are sleeved on the main shaft.

[0023] The beneficial effects of this utility model are as follows:

[0024] The rotor substrate of the dispersion rotor of this invention can form a forced flow of slurry, which is beneficial to improving dispersion effect and dispersion efficiency; the dispersion blades are set in the rotor ring, and the dispersion blades can drive the slurry through the shearing channel quickly when rotating, thereby increasing the number of shearing times per unit time and improving pulping efficiency.

[0025] The buffer cavity between the two sets of dispersion components in this invention allows the liquid to remain in the dispersion cavity for a longer time, which is more conducive to improving the dispersion effect of the liquid. When the back blades of the dispersion rotor rotate at high speed with the dispersion rotor, they can stir the liquid on the one hand, so as to further disperse the liquid, and on the other hand, push the liquid outward from the buffer cavity, so as to prevent the liquid from stagnating in the buffer cavity. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0028] Figure 3 A three-dimensional view of the dispersed rotor from one perspective.

[0029] Figure 4 A three-dimensional view of the dispersed rotor from another perspective.

[0030] Figure 5 The first embodiment of the slotted shape for the dispersed stator and dispersed rotor.

[0031] Figure 6 A second embodiment of the slotted shape for the dispersed stator and dispersed rotor.

[0032] Figure 7 The third embodiment is a slotted shape for the dispersed stator and dispersed rotor.

[0033] In the picture:

[0034] 1. Housing assembly; 2. Main shaft; 3. Dispersing rotor; 31. Rotor base plate; 32. Sleeve; 33. Rotor ring; 331. Rotor dispersion groove; 34. Dispersing blade; 341. Connecting blade; 342. Separating blade; 35. Back blade; 4. Dispersing stator; 41. Stator base plate; 42. Stator ring; 421. Stator dispersion groove; 5. Mixing rotor; 6. Mixing stator; 7. Powder conveying rotor;

[0035] 10. Liquid inlet chamber; 20. Dispersion chamber; 201. Buffer chamber; 30. Mixing chamber; 40. Powder inlet chamber; 50. Liquid inlet; 60. Liquid outlet. Detailed Implementation

[0036] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0037] like Figure 1As shown, the housing assembly 1 of this utility model is provided with a liquid inlet chamber 10, a dispersion chamber 20, a mixing chamber 30, and a powder inlet chamber 40 arranged sequentially from bottom to top. A liquid inlet 50 is provided on the housing assembly 1, connecting to the liquid inlet chamber 10, and a liquid outlet 60 is provided, connecting to the mixing chamber 30. The dispersion chamber 20 contains two sets of dispersion components, the mixing chamber 30 contains a mixing rotor 5 and a mixing stator 6, and the powder inlet chamber 40 contains a powder conveying rotor 7. The mixing rotor 5 and the powder conveying rotor 7 are mounted on the main shaft 2.

[0038] Two sets of dispersion components are arranged back-to-back within the dispersion chamber 20. Each set of dispersion components includes a dispersion rotor 3 and a dispersion stator 4. The dispersion rotor 3 is sleeved on the main shaft 2, and the dispersion stator 4 is fixed on the housing assembly 1. The dispersion rotors 3 of the two sets of dispersion components are arranged back-to-back, and the dispersion stators 4 are arranged face-to-face.

[0039] like Figure 3 , Figure 4 As shown, a rotor base plate 31 is radially arranged on the rotor base plate 31, and a sleeve 32 is axially extended from the center of the rotor base plate 31. The sleeve 32 extends axially from the front and back of the rotor base plate 31, with the height extending from the front being greater than the height extending from the back. The sleeve 32 is fitted onto the main shaft 2 (see reference). Figure 1 (As shown). A rotor ring 33 is axially extended from the outer periphery of the sleeve 32 on the front side of the rotor base plate 31. A spacing exists between the rotor ring 33 and the sleeve 32, forming a dispersion space. A plurality of dispersion blades 34 are circumferentially arranged within the dispersion space between the rotor ring 33 and the sleeve 32. The axial height of the rotor ring 33 and the dispersion blades 34 is approximately equal to the height of the sleeve 32 extending from the front side. Each dispersion blade 34 includes connecting blades 341 and separating blades 342, arranged at intervals. The inner end of each dispersion blade 34 is connected to the sleeve 32, and its outer end is spaced apart from the rotor ring 33. Similarly, the inner end of each separating blade 342 is spaced apart from the sleeve 32, and its outer end is spaced apart from the rotor ring 33. A plurality of back blades 35 are axially extended from the outer periphery of the sleeve 32 on the back side of the rotor base plate 31. The axial height of the back blades 35 is less than the height of the sleeve 32 extending from the back side. The outer end of the back blade 35 extends to the outer side of the rotor base plate 31, and there is a certain gap between the inner end and the sleeve 32. The back blade 35 is inclined at a certain angle to one side relative to the radial line from the outside to the inside. The rotor base plate 31 of the dispersion rotor 3 can form a forced flow of slurry, which is beneficial to improving the dispersion effect and dispersion efficiency; the dispersion blade 34 is provided in the rotor ring 33. When the dispersion blade 34 rotates, it can drive the slurry through the shear channel quickly, thereby increasing the number of shearing times per unit time and improving the pulping efficiency.

[0040] like Figure 1 , Figure 2As shown, the dispersion rotors 3 of the upper and lower dispersion components are arranged back to back, with the front of the lower dispersion rotor 3 facing down and the back of the upper dispersion rotor 3 facing up and the back of the upper dispersion rotor 3 facing down. The sleeves 32 of the two dispersion rotors 3 abut against each other. A buffer cavity 201 is formed between the rotor base plates 31 of the two dispersion rotors 3. The buffer cavity 201 is connected to the dispersion cavity 20. The back blades 35 of the dispersion rotor 3 are located in the buffer cavity 201. The buffer cavity 201 provides a buffer space for the liquid, allowing the liquid to stay in the dispersion cavity 20 for a longer time, which is more conducive to improving the dispersion effect of the liquid. The back blades 35 of the dispersion rotor 3 are located in the buffer cavity 201. When rotating at high speed with the dispersion rotor 3, they can stir the liquid and further disperse the liquid. On the other hand, they can also push the liquid outward from the buffer cavity 201 to prevent the liquid from stagnating in the buffer cavity 201.

[0041] like Figure 1 As shown, the dispersing stator 4 has a stator base plate 41 arranged radially, and a central channel for liquid flow is opened in the center of the stator base plate 41. Several stator rings 42 are arranged axially on the front side of the stator base plate 41, and the stator rings 42 are spaced apart. The rotor ring 33 of the dispersing rotor 3 extends between two adjacent stator rings 42. The dispersing stator 4 of the lower dispersing assembly is located below the dispersing rotor 3 with its front facing upward, and the dispersing stator 4 of the upper dispersing assembly is located above the dispersing rotor 3 with its front facing downward.

[0042] like Figures 1 to 3 As shown, the rotor ring 33 of the dispersed rotor 3 has several rotor dispersion grooves 331, and the stator ring 42 of the dispersed stator 4 has several stator dispersion grooves 421. Figure 5 As shown, the rotor dispersion groove 331 and the stator dispersion groove 421 can be straight grooves. Straight grooves offer moderate conveying and dispersion effects, suitable for most working conditions. Figure 6 , Figure 7 As shown, the rotor dispersion slot 331 and the stator dispersion slot 421 can also be inclined slots, with the inclination directions of the rotor dispersion slot 331 and the stator dispersion slot 421 being opposite; for example Figure 6 As shown, for applications requiring higher conveying capacity, the rotor dispersion groove 331 can be configured as an inclined groove with the same inclination direction as the rotation direction from the outside to the inside, while the stator dispersion groove 421 can be configured as an inclined groove with the opposite inclination direction from the outside to the inside; for example Figure 7 As shown, for working conditions requiring higher dispersion capability, the rotor dispersion groove 331 can be set as an inclined groove with an inclination direction opposite to the rotation direction from the outside to the inside, and the stator dispersion groove 421 can be set as an inclined groove with an inclination direction in the same direction as the rotation direction from the outside to the inside.

[0043] In actual use, the main shaft 2 is driven by the drive mechanism to rotate at high speed, thereby driving the dispersing rotor 3, the mixing rotor 5, and the powder conveying rotor 7 to rotate at high speed. The liquid enters the liquid inlet chamber 10 from the liquid inlet 50, then turns and enters the dispersing chamber 20. After being dispersed by the lower and upper dispersing components in sequence, it enters the mixing chamber 30. The powder enters from the powder inlet chamber 40 and is conveyed to the mixing chamber 30 by the powder conveying rotor 7. The liquid and powder are mixed evenly in the mixing chamber 30 by the mixing rotor 5 and the mixing stator 6, and then output from the liquid outlet 60.

[0044] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.

Claims

1. A back-to-back shearing structure, comprising upper and lower sets of dispersing components, each set of dispersing components comprising a dispersing rotor (3) and a dispersing stator (4), characterized in that: The two sets of dispersion components have their dispersion rotors (3) arranged back-to-back and dispersion stators (4) arranged face-to-face. The dispersing rotor (3) is provided with a rotor base plate (31). The front side of the rotor base plate (31) is provided with a rotor ring (33) and a dispersing blade (34). The dispersing blade (34) is located inside the rotor ring (33). There is a gap between the outer end of the dispersing blade (34) and the rotor ring (33). The rotor ring (33) is provided with a rotor dispersing groove (331). The stator (4) is provided with a stator substrate (41), a stator ring (42) is provided on the front side of the stator substrate (41), and a stator dispersion groove (421) is provided on the stator ring (42); a central channel for the flow of liquid is provided in the center of the stator substrate (41). The rotor ring (33) of the distributed rotor (3) extends between two adjacent stator rings (42); The lower set of dispersed rotors (3) has its front side facing down and its back side facing up, while the upper set of dispersed rotors (3) has its front side facing up and its back side facing down. A buffer cavity (201) is formed between the rotor substrates (31) of the two sets of dispersed rotors (3). The lower dispersion stator (4) of the dispersion assembly is located below the dispersion rotor (3) with its front facing upwards, while the upper dispersion stator (4) of the dispersion assembly is located above the dispersion rotor (3) with its front facing downwards.

2. The back-to-back shear structure according to claim 1, characterized in that: The rotor substrate (31) has several back blades (35) on its back side, and the back blades (35) are located in the buffer cavity (201).

3. The back-to-back shear structure according to claim 2, characterized in that: A sleeve (32) is provided in the center of the rotor base plate (31). The sleeve (32) extends axially from the front and back sides of the rotor base plate (31). The sleeves (32) of the upper and lower sets of dispersed rotors (3) abut against each other.

4. The back-to-back shear structure according to claim 2 or 3, characterized in that: The axial height of the back blade (35) is less than the height of the sleeve (32) extending from the back; the outer end of the back blade (35) extends to the outer side of the rotor base plate (31), and there is a certain gap between the inner end and the sleeve (32); the back blade (35) is tilted to one side at a certain angle from the outside to the inside relative to the radial line.

5. The back-to-back shear structure according to claim 1 or 3, characterized in that: Several dispersing blades (34) are arranged between the rotor ring (33) and the sleeve (32), and the axial height of the rotor ring (33) and the dispersing blades (34) is equivalent to the height of the sleeve (32) extending from the front.

6. The back-to-back shear structure according to claim 1 or 3, characterized in that: The dispersing blade (34) includes a connecting blade (341) and a separating blade (342), which are arranged at intervals. The inner end of the dispersing blade (34) is connected to the sleeve (32), and there is a certain gap between the inner end of the separating blade (342) and the sleeve (32).

7. The back-to-back shear structure according to claim 1, characterized in that: The rotor dispersion slot (331) of the dispersion rotor (3) and the stator dispersion slot (421) of the dispersion stator (4) are straight slots.

8. The back-to-back shear structure according to claim 1, characterized in that: The rotor dispersion slot (331) of the dispersed rotor (3) and the stator dispersion slot (421) of the dispersed stator (4) are inclined slots, and the inclination direction of the rotor dispersion slot (331) and the stator dispersion slot (421) are opposite; the rotor dispersion slot (331) is an inclined slot with the same inclination direction from the outside to the inside as the rotation direction, and the stator dispersion slot (421) is an inclined slot with the opposite inclination direction from the outside to the inside as the rotation direction; or, the rotor dispersion slot (331) is an inclined slot with the opposite inclination direction from the outside to the inside as the rotation direction, and the stator dispersion slot (421) is an inclined slot with the same inclination direction from the outside to the inside as the rotation direction.

9. A pulping machine, wherein a housing assembly (1) is provided with a liquid inlet chamber (10), a dispersion chamber (20), a mixing chamber (30), and a powder inlet chamber (40); the housing assembly (1) is provided with a liquid inlet (50) communicating with the liquid inlet chamber (10) and a liquid outlet (60) communicating with the mixing chamber (30); characterized in that: The dispersion cavity (20) is provided with the back-to-back shearing structure as described in claim 1.

10. The pulping machine according to claim 9, characterized in that: The mixing chamber (30) is equipped with a mixing rotor (5) and a mixing stator (6), and the powder inlet chamber (40) is equipped with a powder conveying rotor (7) and a dispersing rotor (3). The mixing rotor (5) and the powder conveying rotor (7) are mounted on the main shaft (2).

Images