CN109487608B - Continuous double-vortex hydraulic cleaner - Google Patents

Abstract

The invention discloses a continuous double-vortex hydraulic cleaner, wherein a slurry tank comprises a cylindrical first slurry cavity and a cylindrical second slurry cavity, and the lower end of the first slurry cavity is communicated with the upper end of the second slurry cavity; the first slurry cavity is obliquely arranged relative to the ground, and the impeller is arranged at the upper end of the first slurry cavity; the caliber of the second slurry cavity is gradually reduced along the direction from the upper end to the lower end. Through carrying out structural improvement on the slurry tank, the first slurry cavity is obliquely arranged, the caliber of the second slurry cavity is gradually reduced, the purpose that the slurry forms vortex in the first slurry cavity and the second slurry cavity at the same time can be achieved, the vortex flow direction in the first slurry cavity is opposite to the vortex flow direction in the second slurry cavity, the slurry flow circulation effect is improved, and the slurry mixing speed is accelerated; the bidirectional double vortex flow can effectively reduce the flow resistance of the slurry flow thrown out by the impeller after rising along the groove wall, improve the slurry flow state, reduce the energy loss and improve the production efficiency.

Description

A continuous double vortex hydraulic cleaning machine

Technical Field

The invention relates to the field of papermaking and paddle making, and more particularly to a continuous double-vortex hydraulic cleaning machine.

Background technique

Hydraulic cleaning machine is used to remove a large amount of light and a small amount of heavy debris from the pulp in the waste paper processing process of the papermaking and pulping industry. During operation, as the rotor rotates, the pulp put into the cleaning machine is subjected to hydraulic impact, mechanical tearing of the impeller, and mechanical disintegration between the impeller and the screen plate, generating strong shearing, friction and kneading effects, so that the pulp in the cleaning machine is fully broken down and finally dissociated into fibers.

The existing hydraulic cleaning machine is shown in Figure 1. The overall layout of the equipment is a horizontal structure. First, the slurry cannot form a vortex in the horizontal slurry tank 1, and the slurry cannot be strongly impacted and broken up, which is not conducive to the crushing of the slurry; second, the good slurry outlet 3 and the heavy slag outlet 5 of the slurry tank 1 are both at the bottom of the slurry tank, and the good slurry and impurities are not completely separated. This structure also determines that the discharge of good slurry and impurities is intermittent, which greatly reduces the production capacity and efficiency; third, as shown in Figure 1, the impeller 2 has a larger wheel core and higher and shorter blades, which increases the flow resistance and thus increases the energy consumption of the equipment.

Therefore, how to provide a cleaning machine that can solve all or part of the above-mentioned defects has become a technical problem that people in this field need to solve urgently.

Summary of the invention

In view of this, the present invention provides a continuous double-vortex hydraulic cleaning machine, the cleaning machine has a pulp tank, the pulp tank is provided with a pulp inlet, a heavy residue outlet and a good pulp outlet, and an impeller is arranged in the pulp tank;

The slurry trough comprises a first cylindrical slurry chamber and a second cylindrical slurry chamber, wherein the lower end of the first slurry chamber is connected with the upper end of the second slurry chamber; the first slurry chamber is inclined relative to the ground, and the impeller is installed at the upper end of the side wall of the first slurry chamber; the cross-section of the second slurry chamber gradually decreases from its upper end to its lower end.

The beneficial effects of the present invention are as follows: by improving the structure of the slurry trough, the first slurry chamber is tilted and the diameter of the second slurry chamber is gradually reduced, so that the slurry can form vortices in the first slurry chamber and the second slurry chamber at the same time, and the vortex in the first slurry chamber and the vortex in the second slurry chamber flow in opposite directions, thereby improving the slurry flow circulation effect and accelerating the slurry mixing speed; the bidirectional double vortex can effectively reduce the flow resistance of the slurry flow thrown out by the impeller and then returning after rising along the trough wall, thereby improving the slurry flow state and reducing energy loss.

Preferably, the inclination angle of the central axis of the first slurry chamber relative to the ground is 45°-55°, and the inclination angle can be appropriately adjusted according to the amount of heavy slag in the slurry. When there is a lot of heavy slag, the angle can be increased to improve the collection effect of the heavy slag.

Preferably, the paddle inlet is arranged on the side wall of the first slurry chamber near the lower end, the good paddle outlet is arranged on the side wall of the first slurry chamber near the upper end, and the heavy slag outlet is arranged at the lower end of the second slurry chamber.

The good pulp outlet and the heavy slag outlet are designed on the side wall near the upper end of the first slurry chamber and the lower end of the second slurry chamber respectively. During operation, the good pulp and heavy slag can be completely separated, and continuous slurry discharge is realized. Compared with the existing hydraulic cleaning machine, the energy saving efficiency can reach about 25%. For hydraulic cleaning machines of the same specifications, at the same crushing degree, the production capacity can be increased by 10-30%.

Furthermore, it also includes a support seat, one end of which is set on the ground, and the other end is connected to the outer side wall of the first slurry chamber and/or the second slurry chamber.

The support seat can be used to assist in fixing the entire cleaning machine to prevent the cleaning machine from tipping over due to the tilt of the pulp tank.

Furthermore, it also includes a driving motor and a casing, wherein the driving shaft of the driving motor is drivingly connected to the impeller, and the casing is covered on the driving motor.

Furthermore, the impeller is a turbine impeller, which includes a wheel core and blades, and the blades are circumferentially arranged on the outer surface of the wheel core. The impeller is arranged in cooperation with the sieve plate, and the sieve plate is installed on the sieve plate seat, and the fitting clearance between the bottom surface of the impeller and the sieve plate is 3-6mm. The wheel core diameter of the impeller is 350mm, the outer diameter is 900mm, and the wheel core height is 28-35mm. The wheel core diameter of a conventional impeller is 520mm, the outer diameter is 840mm, and the wheel core height is 148mm. By reducing the wheel core size and increasing the outer diameter size, the screening area is increased; by reducing the wheel core height, the power consumption is reduced, the crushing effect is improved, and energy saving and consumption reduction are achieved.

Compared with the existing impeller, the impeller of the present invention has a smaller core, longer blades, and the shape, angle and size of the blades are fully optimized. The advanced impeller form combined with the screen plate with a larger filtering area has the effect of enhancing the crushing effect, improving the pulp screening ability, and improving the crushing efficiency, while also greatly reducing the energy consumption of the impeller.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

Figure 1 is a structural diagram of a conventional hydraulic cleaning machine;

FIG2 is a schematic diagram of the structure provided by the present invention;

FIG. 3 is a top view of the structure provided by the present invention.

Among them, 1-slurry trough, 101-first slurry chamber, 102-second slurry chamber, 2-impeller, 3-good paddle outlet, 4-paddle inlet, 5-heavy slag outlet, 6-support seat, 7-drive motor, 8-transmission mechanism, 9-screen plate seat, 10-screen plate.

Detailed ways

The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

The embodiment of the present invention discloses a continuous double-vortex hydraulic cleaning machine, which comprises a pulp tank 1, on which a pulp inlet 4, a heavy residue outlet 5 and a good pulp outlet 3 are provided, and an impeller 2 is arranged in the pulp tank 1;

The slurry tank 1 has a cylindrical first slurry chamber 101 and a second slurry chamber 102, the lower end of the first slurry chamber 101 is connected to the upper end of the second slurry chamber 102; the first slurry chamber 101 is inclined relative to the ground, and the impeller 2 is installed at the upper end of the side wall of the first slurry chamber 101; the cross-section of the second slurry chamber 102 gradually decreases from its upper end to its lower end.

In the embodiment of the present invention, the inclination angle of the central axis of the first slurry chamber relative to the ground is 45°-55°.

In an embodiment of the present invention, the paddle inlet 4 is arranged on the side wall of the first slurry chamber 101 near the lower end, the good paddle outlet 3 is arranged on the side wall of the first slurry chamber 101 near the upper end, and the heavy slag outlet 5 is arranged at the lower end of the second slurry chamber 102.

In the embodiment of the present invention, a support base 6 is further included, one end of the support base 6 is disposed on the ground, and the other end of the support base 6 is connected to the outer side wall of the first slurry chamber 101 and/or the second slurry chamber 102 .

In the embodiment of the present invention, a driving motor 7 and a transmission mechanism 8 are also included. The driving motor 7 is in transmission connection with the transmission mechanism 8. The impeller 2 is mounted on the transmission mechanism 8. The impeller 2 is matched with the sieve plate 10. The sieve plate 10 is mounted on the sieve plate seat 9. The matching clearance between the bottom surface of the impeller 2 and the sieve plate 10 is 3-6 mm. The wheel core diameter of the impeller 2 is 350 mm, the outer diameter is 900 mm, and the wheel core height is 28-35 mm.

In the embodiment of the present invention, the impeller 2 is a turbine impeller 2, which includes a wheel core and blades, and the blades are circumferentially arranged on the outer surface of the wheel core.

The present invention provides a continuous double vortex hydraulic cleaning machine, which has the following beneficial effects compared with the prior art:

The continuous double-vortex hydraulic cleaning machine has comprehensively improved and optimized the pulp tank and impeller, adopted a reasonable pulp tank structure and advanced impeller form, and enhanced the mechanical action and stirring efficiency of the impeller; the double vortex formed by the pulp in the pulp tank improves the pulp flow circulation effect and accelerates the pulp mixing speed, reduces the flow resistance, thereby fully improving the equipment's crushing efficiency and production capacity, and reducing comprehensive energy consumption; the good pulp outlet and heavy impurity outlet are designed at the upper and lower parts of the pulp tank respectively, which can achieve a thorough separation of good pulp and impurities, and realize continuous secondary crushing treatment;

Compared with conventional hydraulic cleaning machines, the continuous double-vortex hydraulic cleaning machine can achieve energy-saving efficiency of about 25%. For hydraulic cleaning machines of the same specifications, the production capacity can be increased by 10-30% at the same crushing degree.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. The continuous double-vortex hydraulic cleaning machine is provided with a slurry tank (1), wherein a slurry inlet (4), a heavy slag outlet (5) and a good slurry outlet (3) are formed in the slurry tank (1), and an impeller (2) is arranged in the slurry tank; the method is characterized in that: the slurry tank (1) is internally provided with a cylindrical first slurry cavity (101) and a cylindrical second slurry cavity (102), and the lower end of the first slurry cavity (101) is communicated with the upper end of the second slurry cavity (102); the first slurry cavity (101) is obliquely arranged relative to the ground, and the impeller (2) is arranged at the upper end of the side wall of the first slurry cavity (101); the cross section of the second slurry cavity (102) is gradually smaller along the direction from the upper end to the lower end; the vortex flow direction in the first slurry cavity (101) is opposite to the vortex flow direction in the second slurry cavity (102);

the inclination angle of the central axis of the first slurry cavity (101) relative to the ground is 45-55 degrees;

the slurry inlet (4) is arranged on the side wall of the first slurry cavity (101) close to the lower end of the slurry cavity, the good slurry outlet (3) is arranged on the side wall of the first slurry cavity (101) close to the upper end of the slurry cavity, and the heavy slag outlet (5) is arranged at the lower end of the second slurry cavity (102);

the impeller (2) is a turbine impeller (2) and comprises a wheel core and blades, wherein the blades are circumferentially arranged on the outer surface of the wheel core;

wherein the central axis corresponding to the slurry inlet (4) is obliquely arranged relative to the central axis of the first slurry cavity (101).

2. The continuous double-vortex hydraulic cleaning machine according to claim 1, further comprising a supporting seat (6), wherein one end of the supporting seat (6) is arranged on the ground, and the other end is connected with the outer side wall of the first slurry cavity (101) and/or the second slurry cavity (102).

3. The continuous double-vortex hydraulic cleaning machine according to claim 1, further comprising a driving motor (7) and a transmission mechanism (8), wherein the driving motor (7) is in transmission connection with the transmission mechanism (8), and the impeller (2) is mounted on the transmission mechanism (8).

4. A continuous double vortex hydraulic washer according to claim 1 wherein the impeller (2) has a core diameter of 350mm, an outer diameter of 900mm and a core height of 28-35mm.