---
title: "Filter Bag Cage"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FILTER_BAG_CAGE"
  data_integrity_hash: "415eff387bc905131d532f7a14477b92"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:FILTER_BAG_CAGE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/filter-bag-cage.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/filter-bag-cage"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-1500 Pa differential pressure"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 2500
    unit: "Pa"
    consequence: "Plastic deformation due to Von Mises stress exceeding 250 MPa yield strength of 304 stainless steel at elevated temperatures, causing permanent distortion"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Pulse-jet cleaning pressure exceeding 600 kPa"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Reinforced fillet welds with 8 mm throat thickness and stress-relief annealing at 850°C for 2 hours"
  - node_2:
      trigger: "Condensation-induced chloride stress corrosion cracking"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "316L stainless steel material with &lt;0.03% carbon content and post-weld pickling in 20% HNO3 + 5% HF solution"
bom_nodes:
  top-cap:
    type: "component"
    urn: "URN:CNFX:ME:TOP_CAP"
    interface_type: "physical-logic-coupled"
  vertical-wires:
    type: "component"
    urn: "URN:CNFX:ME:VERTICAL_WIRES"
    interface_type: "physical-logic-coupled"
  support-rings:
    type: "component"
    urn: "URN:CNFX:ME:SUPPORT_RINGS"
    interface_type: "physical-logic-coupled"
  bottom-ring:
    type: "component"
    urn: "URN:CNFX:ME:BOTTOM_RING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 16890:2016 (AIR FILTER TESTING)"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING (EU PRESSURE EQUIPMENT DIRECTIVE 2014/68/EU)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/filter-bag-cage.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c2fa4b2ddea2b2b7c8ee9faa18f94759288b8a7d0cf1e8373887af3c75698eae"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Filter Bag Cage

## 1. Technical Definition
A structural support frame that holds filter bags in place within a bag filter house, maintaining their shape and preventing collapse during operation.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-1500 Pa differential pressure**. Failure boundary: **Structural yield at 2500 Pa differential pressure or 450°C continuous temperature**, Mechanism: **Plastic deformation due to Von Mises stress exceeding 250 MPa yield strength of 304 stainless steel at elevated temperatures, causing permanent distortion**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Pulse-jet cleaning pressure exceeding 600 kPa | 8 | Weld fracture at cage-to-top plate connection | Reinforced fillet welds with 8 mm throat thickness and stress-relief annealing at 850°C for 2 hours |
| Condensation-induced chloride stress corrosion cracking | 8 | Intergranular cracking in heat-affected zones below 150°C | 316L stainless steel material with &lt;0.03% carbon content and post-weld pickling in 20% HNO3 + 5% HF solution |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Bag Filter House**, **Compressed Air System**, **Dust Collection System**  
**Downstream Applications**: Filtered Air/Gas Stream, Collected Particulate Matter, Clean Process Air  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are filter bag cages typically made from?
**A**: Filter bag cages are commonly manufactured from carbon steel, stainless steel, or galvanized steel, with material selection based on the specific application requirements, temperature conditions, and chemical exposure in the filtration process.

### Q: How does a filter bag cage improve filtration efficiency?
**A**: The cage maintains the filter bag's shape during operation, preventing collapse that would reduce surface area and airflow. This ensures consistent dust collection, prevents bag damage, and maintains optimal pressure drop across the filtration system.

### Q: What are the main components of a filter bag cage?
**A**: A standard filter bag cage consists of a bottom ring, multiple support rings spaced along the height, a top cap for secure mounting, and vertical wires connecting all components to create a rigid cylindrical structure that supports the filter media.

## 6. Manufacturing Compliance
- ISO 16890:2016 (AIR FILTER TESTING)
- CE MARKING (EU PRESSURE EQUIPMENT DIRECTIVE 2014/68/EU)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Filter Bag Cage](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/filter-bag-cage)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: FILTER_BAG_CAGE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 6ef8551c
