PTFE (Polytetrafluoroethylene) coated needleless filter bag prepared by hot melting method

Abstract

The utility model belongs to the technical field of dust removal filter bags, and discloses a PTFE (Polytetrafluoroethylene) film-coated needleless filter bag prepared by a hot melting method, which comprises a filter bag body, an outer cylinder is sleeved outside the filter bag body, a wind shield is arranged below the filter bag body, a spring is sleeved outside a sliding rod, and the outer cylinder is sleeved outside the sliding rod. The anti-adhesion assembly comprises two groups of vertical rods which are symmetrically and fixedly connected to the top of the wind shield, the vertical rods are movably connected with the inner wall of the outer cylinder, beating plates are arranged on the two sides of the filter bag body, one side of each beating plate is fixedly connected with a transverse rod, and the transverse rods are movably connected with the inner wall of the outer cylinder; and connecting rods are symmetrically hinged between the cross rods and the vertical rods on the same side through hinge pieces. The problem that the dust filtering and collecting effects are affected due to the fact that a PTFE film-coated needleless filter bag is prone to wrinkles is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal filter bags, in particular to a PTFE-coated, stitch-free filter bag prepared by a hot-melt method. Background Art

[0002] Dust filter bags are a critical component of baghouse operation, typically suspended vertically in the dust collector as cylindrical bags. The fabric and design of these bags strive for high filtration efficiency, easy dust removal, and durability. As national environmental protection requirements continue to rise, their application is becoming increasingly widespread across various industries.

[0003] Existing PTFE coated needleless filter bags are generally hung vertically in the dust collector in the form of cylindrical filter bags when in use. Since there is no structure to unfold the PTFE coated needleless filter bags, the PTFE coated needleless filter bags are prone to wrinkles, which affects the dust filtering and collection effect.

[0004] In summary, there is currently a need for a structure that can unfold a PTFE-coated needle-free filter bag. Utility Model Content

[0005] The utility model aims to provide a PTFE-coated, seam-free filter bag manufactured by a hot-melt method. By providing a windshield, when airflow blows toward the windshield and moves it downward, it pulls the dust filter bag body, allowing it to fully unfold, effectively improving the dust filtration and collection effect.

[0006] The technical solution adopted by the utility model to solve the above problems is: a PTFE-coated needle-free filter bag prepared by a hot-melt method, comprising:

[0007] The filter bag body is provided with an outer sleeve on the outside of the filter bag body, a windshield is provided below the filter bag body, a connecting rod is fixedly connected between the windshield and the bottom of the filter bag body, a sliding rod is symmetrically fixedly connected to the inner wall of the outer sleeve through a connecting seat, and the sliding rod is slidably connected to the windshield, and a spring is provided on the outer sleeve of the sliding rod;

[0008] An anti-adhesion component includes a vertical rod fixedly connected to the top of the windshield and movably connected between the vertical rod and the inner wall of the outer tube. A clapper is provided on both sides of the filter bag body. One side of the clapper is fixedly connected to a cross rod and movably connected between the cross rod and the inner wall of the outer tube. A connecting rod is symmetrically hinged between the cross rod and the vertical rod on the same side through a hinge.

[0009] A further preferred technical solution is that the diameter of the windshield is smaller than the inner diameter of the outer cylinder.

[0010] A further preferred technical solution is that: both ends of the spring are fixedly connected to the windshield and the connecting seat respectively.

[0011] A further preferred technical solution is that a first guide member is fixedly connected to the inner wall of the outer cylinder and the first guide member is slidably connected to the vertical rod on the same side.

[0012] A further preferred technical solution is that: a second guide member is fixedly connected to the inner wall of the outer cylinder, and the second guide member is slidably connected to the cross bar on the same side.

[0013] A further preferred technical solution is that the diameter of the top opening of the outer cylinder is consistent with the diameter of the top opening of the filter bag body.

[0014] A further preferred technical solution is that the filter bag body includes a glass fiber fabric layer, the outer layer of the glass fiber fabric layer is provided with a PTFE film layer, and the inner layer of the glass fiber fabric layer is provided with a high temperature resistant layer.

[0015] A further preferred technical solution is that: air holes are evenly opened on the high temperature resistant layer.

[0016] A further preferred technical solution is that the outer layer of the glass fiber fabric layer is provided with a hot-melt area surface.

[0017] A further preferred technical solution is that the thickness of the glass fiber fabric layer is 1.8-2.2 mm, and the thickness of the PTFE film layer is 0.2-0.5 mm.

[0018] In summary, the present invention has the following advantages:

[0019] 1. The utility model can concentrate and guide the airflow blown out from the dust filter bag body through the outer cylinder. When the airflow blows towards the wind shield, the sliding cooperation between the wind shield and the slide rod can be used to push the wind shield to move vertically downward. The downward movement of the wind shield will pull the dust filter bag body, so that it can be completely unfolded, effectively improving the dust filtering and collection effect.

[0020] 2. The utility model will compress the spring when the windshield moves downward vertically. At the same time, the downward movement of the windshield will drive the first vertical rod to move downward. By utilizing the sliding cooperation between the vertical rod and the first guide member, the sliding cooperation between the cross rod and the second guide member, and the hinged action between the vertical rod and the cross rod and the connecting rod, the windshield will pull the clapper away from the dust filter bag when moving downward. When the dust removal operation is stopped, the windshield loses the push of the windflow and is automatically reset under the rebound action of the spring, thereby driving the clapper to reset and beat the dust filter bag, thereby allowing the dust attached to the inside of the dust filter bag to fall off, further improving the filtration and collection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the vertical sectional three-dimensional structure of the utility model;

[0022] Figure 2 This is a three-dimensional schematic diagram of the windshield connection structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the anti-adhesion component of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the dust removal filter bag of the present invention.

[0025] In the accompanying drawings, the components represented by each number are as follows: 1. Filter bag body; 2. Outer cylinder; 3. Wind shield; 4. Connecting rod; 5. Sliding rod; 6. Spring; 101. Vertical rod; 102. Clapper; 103. Cross bar; 104. Connecting rod; 105. First guide member; 106. Second guide member; 1001. Glass fiber fabric layer; 1002. PTFE film layer; 1003. High temperature resistant layer. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0028] Example:

[0029] Please combine Figures 1-4 The present embodiment provides a PTFE-coated, seam-free filter bag prepared by a hot-melt method, comprising:

[0030] The filter bag body 1 is provided with an outer tube 2 on the outside of the filter bag body 1, and a windshield 3 is provided at the bottom of the filter bag body 1. The diameter of the windshield 3 is smaller than the inner diameter of the outer tube 2. Two groups of connecting rods 4 are fixedly connected between the windshield 3 and the bottom of the filter bag body 1. Two groups of sliding rods 5 are symmetrically fixedly connected to the inner wall of the outer tube 2 through the connecting seat, and the sliding rods 5 are slidably connected to the windshield 3. The outer sleeve of the sliding rod 5 is provided with a spring 6. The two ends of the spring 6 are fixedly connected to the windshield 3 and the connecting seat respectively. The diameter of the top opening of the outer tube 2 is consistent with the diameter of the top opening of the filter bag body 1. The filter bag body 1 includes a glass fiber fabric layer 100 1. The outer layer of the glass fiber fabric layer 1001 is provided with a PTFE film layer 1002, and the inner layer of the glass fiber fabric layer 1001 is provided with a high-temperature resistant layer 1003. The PTFE film layer 1002 can improve the filtering effect and corrosion resistance of the glass fiber fabric layer 1001, and the high-temperature resistant layer 1003 can reduce the damage to the glass fiber fabric layer 1001 caused by high temperature. The high-temperature resistant layer 1003 is evenly provided with air holes, which can increase the air permeability of the filter bag body 1. The thickness of the glass fiber fabric layer 1001 is 1.8-2.2mm, and the thickness of the PTFE film layer 1002 is 0.2-0.5mm.

[0031] The anti-adhesion component includes two groups of vertical rods 101 symmetrically fixedly connected to the top of the windshield 3 and movably connected between the vertical rods 101 and the inner wall of the outer cylinder 2. A clapper 102 is provided on both sides of the filter bag body 1, and a cross bar 103 is fixedly connected to one side of the clapper 102 and the cross bar 103 is movably connected to the inner wall of the outer cylinder 2. A connecting rod 104 is symmetrically hinged between the cross bar 103 and the vertical rod 101 on the same side through a hinge. A first guide member 105 is symmetrically fixedly connected to the inner wall of the outer cylinder 2 and the first guide member 105 is slidably connected to the vertical rod 101 on the same side, which can play a certain guiding role in the vertical movement of the vertical rod 101. A second guide member 106 is also symmetrically fixedly connected to the inner wall of the outer cylinder 2 and the second guide member 106 is slidably connected to the cross bar 103 on the same side, which can play a certain guiding role in the horizontal movement of the cross bar 103.

[0032] The implementation principle of the PTFE-coated needleless sewing filter bag prepared by the hot melting method in the embodiment of the application is as follows: the filter bag body 1 is vertically hung in the dust collector, when the dust removal operation is performed, the dust will enter the filter bag body 1 together with the airflow, the dust will be intercepted and left inside, and the airflow will be blown out, the airflow blown out of the dust removal filter bag body can be concentrated and guided by the outer cylinder 2, when the airflow blows to the baffle 3, the sliding cooperation between the baffle 3 and the sliding rod 5 is utilized to make the baffle 3 vertically move downward, the baffle 3 moves downward to pull the dust removal filter bag body, so that the dust removal filter bag body can be completely unfolded, the filtering and collecting effect on the dust is effectively improved, at the same time, the spring 6 is compressed in the process that the baffle 3 vertically moves downward, and the baffle 3 moves downward to drive the vertical rod 101 to move downward, the sliding cooperation between the vertical rod 101 and the first guide 105, the sliding cooperation between the horizontal rod 103 and the second guide 106, and the hinged action between the vertical rod 101, the horizontal rod 103 and the connecting rod 104 make the baffle 3 pull the flap 102 away from the dust removal filter bag when moving downward, when the dust removal operation is stopped, the baffle 3 loses the pushing of the airflow, and the baffle 3 can be automatically reset under the rebound action of the spring 6, so that the baffle 3 drives the flap 102 to reset to beat the dust removal filter bag, so that the dust attached to the inside of the dust removal filter bag falls, and the filtering and collecting effect is further improved.

[0033] In addition, further improvements are that the outer layer of the glass fiber fabric layer 1001 is provided with a hot melting area surface, which facilitates connection in a hot melting manner, thereby ensuring the combination effect and prolonging the service life of the device.

[0034] In addition, the same or similar reference signs are used as far as possible in the drawings and the description to refer to the same or similar parts or steps. The drawings are presented in a simplified form and are not drawn to scale. Directional terms such as top, bottom, front, back, left, right, front, back, upward, upward, upward, downward, downward, rear and front are used in the drawings for the convenience and clarity. These and similar directional terms should not be interpreted as limiting the scope of the present disclosure in any way.

Claims

1. A PTFE coated seamless filter bag prepared by hot melt method, characterized in that: include: A filter bag body (1), wherein the outer sleeve of the filter bag body (1) is provided with an outer cylinder (2), a windshield (3) is provided below the filter bag body (1), a connecting rod (4) is fixedly connected between the windshield (3) and the bottom of the filter bag body (1), a sliding rod (5) is symmetrically fixedly connected to the inner wall of the outer cylinder (2) through a connecting seat, and the sliding rod (5) is slidably connected to the windshield (3), and a spring (6) is provided on the outer sleeve of the sliding rod (5); An anti-adhesion component comprises a vertical rod (101) fixedly connected to the top of the windshield (3), and the vertical rod (101) is movably connected to the inner wall of the outer cylinder (2); a clapper (102) is provided on both sides of the filter bag body (1); a cross rod (103) is fixedly connected to one side of the clapper (102), and the cross rod (103) is movably connected to the inner wall of the outer cylinder (2); a connecting rod (104) is symmetrically hinged between the cross rod (103) and the vertical rod (101) on the same side through a hinge.

2. The PTFE coated seamless filter bag prepared by hot melt method according to claim 1, characterized in that: The diameter of the windshield (3) is smaller than the inner diameter of the outer cylinder (2).

3. The PTFE coated seamless filter bag prepared by hot melt method according to claim 1, characterized in that: The two ends of the spring (6) are fixedly connected to the windshield (3) and the connecting seat respectively.

4. The PTFE coated seamless filter bag prepared by hot melt method according to claim 1, characterized in that: A first guide member (105) is fixedly connected to the inner wall of the outer cylinder (2), and the first guide member (105) is slidably connected to the vertical rod (101) on the same side.

5. The PTFE coated seamless filter bag prepared by hot melt method according to claim 1, characterized in that: A second guide member (106) is also fixedly connected to the inner wall of the outer cylinder (2), and the second guide member (106) is slidably connected to the same-side crossbar (103).

6. The PTFE coated seamless filter bag prepared by hot melt method according to claim 1, characterized in that: The diameter of the top opening of the outer cylinder (2) is consistent with the diameter of the top opening of the filter bag body (1).

7. The PTFE coated seamless filter bag prepared by hot melt method according to claim 1, characterized in that: The filter bag body (1) comprises a glass fiber fabric layer (1001), the outer layer of the glass fiber fabric layer (1001) is provided with a PTFE film layer (1002), and the inner layer of the glass fiber fabric layer (1001) is provided with a high temperature resistant layer (1003).

8. The PTFE coated seamless filter bag prepared by hot melt method according to claim 7, characterized in that: The high temperature resistant layer (1003) is evenly provided with air holes.

9. The PTFE coated seamless filter bag prepared by hot melt method according to claim 7, characterized in that: The outer layer of the glass fiber fabric layer (1001) is provided with a hot-melt area surface.

10. The PTFE coated seamless filter bag prepared by hot melt method according to claim 7, characterized in that: The thickness of the glass fiber fabric layer (1001) is 1.8-2.2 mm, and the thickness of the PTFE film layer (1002) is 0.2-0.5 mm.

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