Drum less grille crusher

Product Overview: The CRN type drum less crushing grille is a channel type, wall mounted installation that crushes solid substances, suspended solids, and slender fibers in the conveying medium into small particles, which flow away with the sewage

　　Product Overview

The CRN type drum less crushing grille is a channel type, wall mounted installation that crushes solid substances, suspended solids, and slender fibers in the conveying medium into small particles, which flow away with the sewage.

Suitable for installation and use in small and medium flow channels or pump stations, with strong cutting force and energy savings.

working principle

The sewage carrying solid particles passes through a drum less crushing type grille. The solid particles in the sewage are crushed into sufficiently small particles by the two sets of blades of the crusher in the crushing zone. After flowing downstream with the sewage, the small particles will no longer pose a threat to downstream equipment.

basic structure

The CRN type drum less crushing grille is mainly composed of a driving device, a driving shaft, a driven shaft, a cutting blade group, a seal, a machine body, etc. The driving device drives the driving shaft to rotate, and at the same time, the driving shaft drives the driven shaft to rotate through precision gears, causing the blades fixed on the two shafts to rotate in reverse, thereby biting, squeezing, cutting and crushing solid objects into small particles.

◇ Motor

Specially designed motor with multiple power options;

◇ Reducer

Cycloid pinwheel reducer, with strong resistance to load impact, compact structure, and easy installation and maintenance;

◇ Transmission

Using different gear configurations for modular design to meet the needs of special application scenarios;

◇ Blade and gasket

Imported heat-treated alloy steel, with a uniformly hardened surface and a hardness of not less than 45~50HRC;

◇ Axis

Imported heat treated hexagonal alloy steel that meets strength requirements;

◇ Body

High quality carbon steel or stainless steel, ductile iron.

performance advantages

◇ Easy and flexible installation

Suitable for most existing channels without the need for modification;

◇ Dual axis design

Can adapt to more types of solid particles than single axis crushers;

The mutually independent blades and washers are installed on two counter rotating shafts, alternately overlapping to achieve spiral cutting and achieve good cutting effect;

◇ Blade selection

Design various tooth profiles according to customer needs to adapt to various special situations;

Titanium plated blades and washers are optional, which are more wear-resistant than ordinary blades and have a service life 2-3 times longer than ordinary blades;

◇ Sealing

Using a mechanical combination sealing device, there is no need to flush the seal or adjust the sealing packing gland, making it very convenient to use and maintain;

High pressure resistance, up to 6.3kg/cm ²;

◇ Overflow grille

Install overflow grilles on both sides based on actual conditions to increase flow and reduce head loss;

The overflow grille is installed in a horn shape, which facilitates the guidance of dirt into the grille cutting area;

◇ Low flow base

At low flow rates, the cutting area can be maximally utilized to improve cutting and crushing capabilities.

Product Features

1. The dual blade shaft uses gears to transmit torque, and through a certain transmission ratio, the dual shafts operate at different speeds, which can increase the tearing ability of solids.

2. A lower operating speed (typically 35~70rpm) can generate higher torque, and the lower circumferential speed of the blade ensures that energy is not wasted on water loss, while minimizing wear and tear rates.

3. The blade assembly has technology that can tear fiber materials at different speeds. The front and side edges of the blade teeth can cut plastic into fragments, and the peripheral plane of the blade can also crush brittle objects.

4. The speed of the driving shaft and the driven shaft is different to facilitate the self-cleaning of slag between the blades.

5. The blades used are arranged in left and right spiral shapes after being installed on the driving shaft and driven shaft to reduce cutting force and improve the transmission stability of the crusher.

6. Independent cutting blades and washers, easy to replace and maintain, and cost-effective.

7. The cutting blade and gasket are made of high-strength alloy steel, with uniform surface processing and hardening treatment to a minimum of 45-50HRC.

8. The horizontal gap between the cutting blade, gasket, and shaft should not exceed 0.2mm to ensure the normal driving of the cutting blade, reduce wear, and increase the pressure on the gasket.

9. High quality mechanical seals are used in the bearing area to ensure the normal operation of the bearing.

Control system (PLC control cabinet)

Configure Siemens and Mitsubishi human-machine interfaces, reserve communication interfaces, and enable remote automation control;

PLC and other key components are sourced from international brands such as Siemens, Mitsubishi, Schneider, etc;

◇ Automatic start and stop can be set, and the time and frequency of automatic operation can also be set;

Parameters such as overload locked rotor current, number of reversals, and reversal time can be freely set;

◇ Equipped with motor leakage, overload, overheating, short circuit, and phase loss protection;

Equipment operation status, motor load current, and fault status can be displayed in real-time and queried historically.

Technical Specifications

Specification Model	Processing flow Q (m ³/h)	Cutting height A (mm)	Body height B (mm)	Equipment width C (mm)	Equipment side width D (mm)	Equipment total height H (mm)
CR-N80	80	200	500	400	300	1300
CR-N120	120	300	600			1400
CR-N160	160	400	700			1500
CR-N200	200	500	800			1600
CR-N260	260	600	900			1750
CR-N320	320	700	1000			1850
CR-N400	400	800	1100			1950
CR-N500	500	900	1200			2100
CR-N650	650	1000	1300			2200

Note: The above parameters and equipment dimensions are for reference only. Please refer to our company's actual parameters and drawing dimensions during design! Note: The minimum channel width W for the installation of the crushing type grille is the equipment width C+20mm. Generally, sliding guide rails are used for installation, and the channel width W is taken as the equipment width+100mm.