CN-224220980-U - PTFE filter bag of high temperature resistant

Abstract

The utility model relates to the technical field of PTFE filter bags and provides a high-temperature-resistant PTFE filter bag which comprises a filter bag body, wherein a sleeve is arranged on the left outer surface of the filter bag body, a cage is movably embedded in the inner surface of the filter bag body, a connecting piece is fixedly arranged on the left side of the cage, a connecting groove is formed in the connecting piece, the sleeve is movably embedded in the connecting piece, and positioning grooves are formed in the two sides of the inner part of the connecting piece.

Inventors

• ZHAO BING

Assignees

• 无锡国聚高温材料有限公司

Dates

Publication Date

20260512

Application Date

20250530

Claims (8)

1. 1. The utility model provides a PTFE filter bag of high temperature resistant, includes filter bag body (1), the left side surface of filter bag body (1) is provided with sleeve (101), its characterized in that still includes: The cage frame (102) is movably embedded in the inner surface of the filter bag body (1), and a connecting piece (103) is fixedly arranged on the left side of the cage frame (102); The connecting groove (104) is formed in the connecting piece (103), the sleeve (101) is movably embedded in the connecting piece (103), and positioning grooves (106) are formed in two sides of the inside of the connecting piece (103); The two positioning columns (105) are fixedly arranged on the outer surface of the sleeve (101), and the two positioning columns (105) are matched with the positioning grooves (106).
2. 2. The high-temperature resistant PTFE filter bag of claim 1, wherein two connecting plates (107) are fixedly arranged on two sides of the connecting piece (103), and four connecting plates (107) are divided into two groups.
3. 3. The high-temperature-resistant PTFE filter bag of claim 2, wherein bolts (108) are connected to the inner parts of the two groups of connecting plates (107) in a threaded manner, and the two positioning columns (105) are movably connected to the inner sides of the connecting plates (107).
4. 4. A high temperature resistant PTFE filter bag as claimed in claim 3, wherein the inside of both of said positioning posts (105) is provided with a thread groove (109), and both of said bolts (108) are matched with said thread groove (109).
5. 5. The high-temperature-resistant PTFE filter bag of claim 1, wherein a base cloth layer (2) is arranged in the filter bag body (1), and a coating layer (201) is arranged on the top of the base cloth layer (2).
6. 6. The high temperature resistant PTFE filter bag according to claim 5, wherein a heat resistant layer (202) is provided at the bottom of the base cloth layer (2), and a filter layer (203) is provided at the bottom of the heat resistant layer (202).
7. 7. A high temperature resistant PTFE filter bag as claimed in claim 6, wherein a membrane layer (204) is provided at the bottom of the filter layer (203).
8. 8. The PTFE filter bag of claim 7, wherein the bottom of the film layer (204) is provided with a water-repellent and oil-repellent layer (205).

Description

PTFE filter bag of high temperature resistant Technical Field The utility model relates to the technical field of PTFE filter bags, in particular to a high-temperature-resistant PTFE filter bag. Background The high temperature resistant PTFE (polytetrafluoroethylene) filter bag is a filter material used in a high temperature environment, and is widely applied to occasions requiring high temperature filtration in industry due to the excellent high temperature resistance, chemical stability, corrosion resistance and ageing resistance, especially under the condition of corrosive gas, dust or other pollutants. At present, in industrial dust collecting equipment, a PTFE filter bag is widely applied to various dust collecting systems, the installation mode is mainly and directly sleeved on the outer surface of a cage frame, the traditional installation mode is simple and convenient, but has a plurality of defects, in the actual operation process, on one hand, dust-containing air flow can generate larger impact acting force on the filter bag, the filter bag is continuously subjected to periodic external force pulling due to pulsation and fluctuation of the air flow, when the external force exceeds the friction force or the fixed acting force between the filter bag and the cage frame, the filter bag is easy to displace, on the other hand, in the ash removing process, the filter bag can generate intense shaking and friction on the surface of the cage frame due to the instantaneous acting force generated by pulse blowing or mechanical vibration, and frequent shaking and friction not only can accelerate the abrasion of the filter bag, but also can gradually weaken the fitting degree between the filter bag and the cage frame. Disclosure of utility model The utility model aims to solve the problems that in the prior art, the filter bag is directly sleeved on the outer surface of the cage frame, the traditional installation mode is simple and convenient, and the filter bag is easy to displace or fall off once the external force exceeds the friction force or the fixed acting force between the filter bag and the cage frame. In order to achieve the purpose, the utility model adopts the following technical scheme that the high-temperature-resistant PTFE filter bag comprises a filter bag body, wherein a sleeve is arranged on the left outer surface of the filter bag body, and the high-temperature-resistant PTFE filter bag further comprises: The cage is movably embedded in the inner surface of the filter bag body, and a connecting piece is fixedly arranged on the left side of the cage; The connecting groove is formed in the connecting piece, the sleeve is movably embedded in the connecting piece, and positioning grooves are formed in two sides of the inner part of the connecting piece; The two positioning columns are fixedly arranged on the outer surface of the sleeve, and the two positioning columns are matched with the positioning grooves. As a preferred implementation mode, two connecting plates are fixedly arranged on two sides of the connecting piece, and four connecting plates are divided into two groups. The technical effect of adopting the further scheme is that the sleeve and the connecting piece can be fixed through the connecting plate. As a preferable implementation mode, the two groups of connecting plates are internally and respectively connected with bolts in a threaded manner, and the two positioning columns are movably connected to the inner sides of the connecting plates. The technical effect of adopting the further scheme is that the positioning column can move on the inner side of the connecting plate. As a preferred embodiment, the inside of each of the two positioning posts is provided with a thread groove, and each of the two bolts is matched with the thread groove. The technical effect of adopting the further scheme is that the bolt can be embedded into the thread groove. As a preferred embodiment, the inside of the filter bag body is provided with a base cloth layer, and the top of the base cloth layer is provided with a coating layer. The technical effect of adopting the further scheme is that the base cloth layer adopts polyester fiber, has higher strength and good flexibility, and can provide a stable supporting structure for the filter bag. As a preferred embodiment, the base cloth layer is provided with a heat-resistant layer at the bottom, and a filter layer is provided at the bottom of the heat-resistant layer. The ceramic fiber heat-resistant layer has the technical effects of excellent high temperature resistance and low heat conductivity, can effectively block the thermal shock of high-temperature gas to other layers, is arranged at the bottom of the base cloth layer, and can protect the base cloth layer and other functional layers from being damaged by high temperature. As a preferred embodiment, the bottom of the filter layer is provided with a film coating layer. The technical effect of ado