Glass fiber coated needled felt filter bag

Abstract

The utility model is applicable to the technical field of dust removal filter bags, and provides a glass fiber coated needled felt filter bag, which comprises an annular base, a compression ring detachably mounted on the base, a connecting ring fixedly mounted at the lower end of the compression ring, a support framework fixedly mounted at the lower end of the connecting ring, an outer filter bag sleeved on the outer wall of the support framework, and fixedly connected with the compression ring. The inner filter bag is detachably mounted on the supporting framework and abuts against the inner wall of the supporting framework, so that the outer filter bag and the inner filter bag are supported, the outer filter bag and the inner filter bag are prevented from being folded, and the filtering efficiency is improved; a supporting cylinder with a screen on the surface is fixedly mounted at the lower end of the fixing ring, the supporting cylinder abuts against the inner wall of the inner filter bag, the fixing ring is in compression joint with the inner filter bag through an annular groove, a plurality of threaded holes are formed in the connecting ring, and the fixing ring is in threaded connection with the threaded holes through a plurality of connecting bolts, so that disassembly and cleaning and replacement of the outer filter bag and the inner filter bag are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dust filter bag technical field, especially a kind of glass fiber film-coated needle punched felt filter bag. BACKGROUND

[0002] In the current dust filter bag technical field, dust filter bag is a kind of high-efficiency dust filter material, with good ventilation performance, high dust removal efficiency, and certain acid, alkali and heat resistance, and filter bag is the heart in the operation process of bag filter, usually cylindrical pulse filter bag is vertically hung in dust collector, dust-containing gas enters dust collector from air inlet, and part of large particle dust in gas is separated out by the action of inertia force, directly falls into ash bucket, and it is an essential element in bag filter.

[0003] The utility model discloses a kind of needle punched felt filter bags, it is related to filter bag technical field, including filter bag main body, buckle ring, elastic ring, elastic shaft, position baffle, spring.The utility model is pulled by buckle ring, two ends outer wall of elastic ring are close to each other, in this process, elastic shaft is pushed under the elastic ring one end outer wall, along with the sliding of elastic ring other end inner wall, while two limit baffle are driven under the elastic ring two ends, to spring is extruded and shrinks, to facilitate the contraction operation of buckle ring, when buckle ring moves to the inside of flower plate hole, spring can be loosened to make elastic ring push the outer diameter of buckle ring restore, when buckle ring is through annular groove, the outer wall of the upper and lower end of flower plate hole can be sleeved, to achieve the purpose of the quick buckling of filter bag main body.

[0004] But the above patent has the following deficiencies:

[0005] In the above patent, buckle ring and elastic ring are used to fix filter bag, which is convenient for disassembling filter bag, but in actual use, air is extracted by negative pressure, and filter bag is used to filter air, in this process, filter bag is easily folded under stress, which reduces the filtering efficiency of air, and in some use scenarios, there are sand and other particles in air, ordinary filter bag is not strong enough, and is easily damaged after long-term use, with low service life. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of glass fiber film-coated needle punched felt filter bag, to solve the problem mentioned in the above background, air is extracted by negative pressure, filter bag is easily folded under stress, which reduces the filtering efficiency of air, and in some use scenarios, there are sand and other particles in air, ordinary filter bag is not strong enough, and is easily damaged, with low service life.

[0007] The utility model discloses a glass fiber film-coated needled felt filter bag, including annular base,

[0008] The base is detachably installed with a compression ring, the lower end of the compression ring is fixedly installed with a connecting ring, and the lower end of the connecting ring is fixedly installed with a support framework.

[0009] The outer wall of the support framework is sleeved with an outer filter bag, and the outer filter bag is fixedly connected to the compression ring.

[0010] The support framework is detachably installed with an inner filter bag, and the inner filter bag abuts against the inner wall of the support framework.

[0011] Preferably, the outer wall of the base is provided with an annular clamping groove, and the cross section of the clamping groove is trapezoidal.

[0012] The lower surface of the compression ring is provided with a connecting sleeve, and the inner wall of the connecting sleeve is installed with a clamping ring matched with the clamping groove; in this scheme, the clamping ring is clamped with the clamping groove, so as to fix the compression ring, and the compression ring is detachably installed on the base.

[0013] Preferably, the utility model also includes a fixing ring, and the lower surface of the fixing ring is provided with an annular groove matched with the inner filter bag.

[0014] The lower end of the fixing ring is fixedly installed with a support cylinder with a screen surface, and the support cylinder abuts against the inner wall of the inner filter bag; in this scheme, the support cylinder supports the inner filter bag, so as to improve the structural strength of the inner filter bag, prevent the inner filter bag from being bent, and prolong the service life of the inner filter bag.

[0015] Preferably, the fixing ring is pressed to the inner filter bag through the annular groove.

[0016] A plurality of threaded holes are formed in the connecting ring, a plurality of connecting bolts are threadedly connected to the fixing ring, and the plurality of connecting bolts are threadedly connected to the plurality of threaded holes; in this scheme, the fixing ring is fixedly connected to the connecting ring through the connecting bolts, so as to fix the inner filter bag and facilitate disassembly of the inner filter bag.

[0017] Preferably, the outer filter bag includes a metal fiber layer, one side of the metal fiber layer is provided with a film layer one, the other side is provided with a wear-resistant layer, and the wear-resistant layer is provided with a flame-retardant layer; in this scheme, the film layer one improves the strength of the metal fiber layer, and the wear-resistant layer and the flame-retardant layer improve the wear resistance and the flame retardance of the outer filter bag.

[0018] Preferably, the inner filter bag comprises a glass fiber needle punched felt layer, one side of the glass fiber needle punched felt layer is provided with a film coating layer two, the other side is provided with an electrostatic elimination layer, one side of the electrostatic elimination layer is provided with a waterproof layer; in this scheme, the film coating layer two improves the lightness of the glass fiber needle punched felt layer, and the electrostatic elimination layer reduces the static electricity on the surface of the glass fiber needle punched felt layer, prevents dust from being adsorbed on the outer wall of the inner filter bag, and the waterproof layer improves the waterproof property, prolongs the service life of the inner filter bag.

[0019] Compared with the prior art, the glass fiber film-coated needle punched felt filter bag has the advantages that:

[0020] 1、Base is detachable installation has the pressure ring, the lower end of the pressure ring is fixedly installed with the connecting ring, the lower end of the connecting ring is fixedly installed with the support framework, the outer wall of the support framework is sleeved with the outer filter bag, the outer filter bag is fixedly connected with the pressure ring, the inner filter bag is detachably installed on the support framework, the inner filter bag abuts against the inner wall of the support framework, thereby supporting the outer filter bag and the inner filter bag, preventing the outer filter bag and the inner filter bag from folding, and improving the filtering efficiency;

[0021] 2、The lower end of the fixed ring is fixedly installed with the support cylinder with a screen surface, the support cylinder abuts against the inner wall of the inner filter bag, and the fixed ring is pressed against the inner filter bag through the annular groove, a plurality of threaded holes are formed in the connecting ring, and the fixed ring is threadedly connected with the plurality of threaded holes through a plurality of connecting bolts, so that the outer filter bag and the inner filter bag can be easily disassembled and cleaned and replaced;

[0022] 3、The metal fiber layer and the glass fiber needle punched felt layer are respectively provided with film coating layer one and film coating layer two, so as to improve the structural strength of the outer filter bag and the inner filter bag, thereby prolonging the service life of the outer filter bag and the inner filter bag. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure of the utility model

[0024] Figure 2 It is the utility model Figure 1 The enlarged view of A in the utility model

[0025] Figure 3 It is the structure diagram of the fixed ring of the utility model

[0026] Figure 4 It is the structure diagram of the outer filter bag of the utility model

[0027] Figure 5 It is the structure diagram of the inner filter bag of the utility model

[0028] In the drawing:

[0029] 1, base; 11, clamping groove;

[0030] 2, compression ring; 21, connecting sleeve; 211, clasp; 22, connecting ring; 221, support framework; 222, threaded hole;

[0031] 3, fixed ring; 31, annular groove; 32, support cylinder; 33, connecting bolt;

[0032] 4, outer filter bag; 41, metal fiber layer; 42, film layer one; 43, wear-resistant layer; 44, flame-retardant layer;

[0033] 5, inner filter bag; 51, glass fiber needle felt layer; 52, film layer two; 53, static electricity removal layer; 54, waterproof layer. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0035] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0036] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Please refer to Figures 1-5 The utility model provides a technical scheme: a glass fiber film-coated needled felt filter bag, including annular base 1, base 1 detachably install the compression ring 2 on, the lower end fixed mounting of compression ring 2 has the connecting ring 22, the lower end fixed mounting of connecting ring 22 has the support skeleton 221 of support skeleton 221, the outer wall of support skeleton 221 is sleeved with outer filter bag 4, and outer filter bag 4 is fixedly connected compression ring 2, and detachably install the inner filter bag 5 on support skeleton 221, and the inner filter bag 5 is in contact with the inner wall of support skeleton 221, and the outer wall of base 1 is provided with annular clamping groove 11, and the cross section of clamping groove 11 is trapezoidal, and the lower surface of compression ring 2 is provided with connecting sleeve 21, and the inner wall of connecting sleeve 21 is installed with the clamping ring 211 matched with clamping groove 11.

[0040] Wherein, compression ring 2 is connected with clamping groove 11 through clamping ring 211, and the cross section of clamping ring 211 and clamping groove 11 is trapezoidal, facilitating the sliding of clamping ring 211 into the interior, and the compression ring 2 is connected with base 1, so that the outer filter bag 4 is installed on base 1, and base 1 is installed on the partition of filter bag dust collector, facilitating the installation of the filter bag, and support skeleton 221 supports the outer filter bag 4 and the inner filter bag 5, improving the strength of the outer filter bag 4 and the inner filter bag 5, and preventing the bending of the outer filter bag 4 and the inner filter bag 5.

[0041] Further comprising fixed ring 3, the lower surface of fixed ring 3 is provided with annular groove 31 matched with inner filter bag 5, the lower end of fixed ring 3 is fixedly installed with support cylinder 32 with the surface of screen, and support cylinder 32 is in contact with the inner wall of inner filter bag 5, and fixed ring 3 is connected with inner filter bag 5 through annular groove 31, a plurality of threaded holes 222 are formed in connecting ring 22, a plurality of connecting bolts 33 are threadedly connected to fixed ring 3, and the plurality of connecting bolts 33 are threadedly connected to the plurality of threaded holes 222.

[0042] Further, fixed ring 3 is threadedly connected to the plurality of threaded holes 222 by the plurality of connecting bolts 33, so as to detachably install fixed ring 3 on connecting ring 22, facilitate the fixation of inner filter bag 5, and support cylinder 32 supports inner filter bag 5, improving the structural strength thereof.

[0043] Outer filter bag 4 comprises metal fiber layer 41, one side of metal fiber layer 41 is provided with film layer one 42, the other side is provided with wear-resistant layer 43, and wear-resistant layer 43 is provided with fire-retardant layer 44.

[0044] In addition, metal fiber layer 41 is woven by metal fiber, and has higher structural strength, film layer one 42 is PTFE filter film, thereby improving the service life of metal fiber layer 41, wear-resistant layer 43 can be silicon carbide coating, improving the wear resistance of metal fiber layer 41, and fire-retardant layer 44 can be fire-retardant paint, improving the fire resistance thereof.

[0045] The inner filter bag 5 comprises a fiberglass needle felt layer 51, one side of which is provided with a film layer two 52, and the other side is provided with an electrostatic elimination layer 53, one side of which is provided with a waterproof layer 54.

[0046] In addition, the fiberglass needle felt layer 51 is woven by fiberglass needle felt, the film layer two 52 is also a PTFE filter film, the strength of the fiberglass needle felt layer 51 is improved, the electrostatic elimination layer 53 is composed of carbon powder, the accumulated electric charge is guided away, so that the static electricity is eliminated, the dust particles are prevented from being electrostatically adsorbed on the inner filter bag 5, the waterproof layer 54 can be waterproof paint, moisture is prevented, and the service life of the inner filter bag 5 is prolonged.

[0047] The working principle and use process of the utility model are as follows: Figures 1-5 The base 1 is installed on the partition plate of the filter bag dust removal machine, the compression ring 2 is clamped on the clamping groove 11 through the clamping ring 211, the cross sections of the clamping ring 211 and the clamping groove 11 are all trapezoidal, the clamping ring 211 is conveniently slid into the inside, the compression ring 2 is clamped on the base 1, the outer filter bag 4 is installed on the base 1, the supporting framework 221 supports the outer filter bag 4 and the inner filter bag 5, the strength of the outer filter bag 4 and the inner filter bag 5 is improved, and the outer filter bag 4 and the inner filter bag 5 are not prone to bending, the fixing ring 3 is threadedly connected with the plurality of threaded holes 222 through the plurality of connecting bolts 33, the fixing ring 3 is detachably installed on the connecting ring 22, the inner filter bag 5 is conveniently fixed, and the supporting cylinder 32 supports the inner filter bag 5, and the structural strength of the inner filter bag 5 is improved.

[0048] The above only describes preferred embodiments of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A fiberglass mat-faced needle-punched felt filter bag, characterized by: The base (1) is annular; A compression ring (2) is detachably mounted on the base (1), a connecting ring (22) is fixedly mounted on the lower end of the compression ring (2), and a support framework (221) is fixedly mounted on the lower end of the connecting ring (22); An outer filter bag (4) is sleeved on the outer wall of the support framework (221), and the outer filter bag (4) is fixedly connected with the compression ring (2); An inner filter bag (5) is detachably mounted on the support framework (221), and the inner filter bag (5) abuts against the inner wall of the support framework (221).

2. A fiberglass mat-faced needlepunched felt filter bag according to claim 1, wherein: An annular clamping groove (11) is formed in the outer wall of the base (1), and the cross section of the clamping groove (11) is trapezoidal; A connecting sleeve (21) is arranged on the lower surface of the compression ring (2), and a clamping ring (211) matched with the clamping groove (11) is mounted on the inner wall of the connecting sleeve (21).

3. A fiberglass mat-faced needlepunched felt filter bag according to claim 1, wherein: A fixing ring (3) is further arranged, and an annular groove (31) matched with the inner filter bag (5) is formed in the lower surface of the fixing ring (3); A support cylinder (32) with a screen surface is fixedly mounted on the lower end of the fixing ring (3), and the support cylinder (32) abuts against the inner wall of the inner filter bag (5).

4. A fiberglass mat-faced needlepunched felt filter bag according to claim 3, wherein: The fixing ring (3) is connected with the inner filter bag (5) through the annular groove (31); A plurality of threaded holes (222) are formed in the connecting ring (22), a plurality of connecting bolts (33) are threadedly connected with the fixing ring (3), and the plurality of connecting bolts (33) are threadedly connected with the plurality of threaded holes (222).

5. A fiberglass mat-faced needlepunched felt filter bag according to claim 1, wherein: The outer filter bag (4) comprises a metal fiber layer (41), a film layer one (42) is arranged on one side of the metal fiber layer (41), a wear-resistant layer (43) is arranged on the other side of the metal fiber layer (41), and a flame-retardant layer (44) is arranged on the wear-resistant layer (43).

6. A fiberglass mat-faced needlepunched felt filter bag according to claim 1, wherein: The inner filter bag (5) comprises a glass fiber needle felt layer (51), a film layer two (52) is arranged on one side of the glass fiber needle felt layer (51), a static electricity removing layer (53) is arranged on the other side of the glass fiber needle felt layer (51), and a waterproof layer (54) is arranged on one side of the static electricity removing layer (53).

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