Air pipe with filtering connector

Abstract

The air pipe comprises a tail end pipe section and a filter sleeve, the section of the tail end pipe section is rectangular, the filter sleeve is in a rectangular frame shape, the filter sleeve is detachably arranged at the front end of the tail end pipe section in a sleeved mode, an annular notch is formed in the rear section of the inner wall of the filter sleeve, and the annular notch is used for being detachably matched with the front end of the tail end pipe section. Containing grooves are formed in the four inner side walls of the annular notch respectively, limiting clamping strips are arranged in the four containing grooves, the width of the limiting clamping strips corresponds to that of the containing grooves, guide holes are formed in the groove bottoms of the containing grooves, guide rods are fixedly connected to the outer walls of the limiting clamping strips and slidably arranged in the guide holes in a penetrating mode, and springs are arranged on the guide rods in a sleeving mode; the two ends of the spring abut against the bottom wall of the limiting clamping strip and the groove bottom of the containing groove respectively, a limiting ring groove is formed in the outer wall of the front section of the tail end pipe section, and the limiting clamping strip can slide to be clamped into the limiting ring groove. According to the utility model, the filter screen is arranged and can be used for filtering flue gas, so that the dust content of exhausted gas is reduced, and the environmental pollution is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, and particularly relates to an air duct with a filtering joint. Background Art

[0002] A single pipe section of an air duct is formed by rolling a sheet metal into a cylindrical shape, and the cross-section of the pipe section is generally circular or rectangular. The air duct is formed by connecting sections of pipe sections end to end. Connecting angle irons are fixedly connected to both the head and the tail of the pipe sections, and the connecting angle irons of adjacent two pipe sections are connected by threaded connectors to achieve connection with each other.

[0003] The pipe sections of the air duct need to have the characteristics of fire resistance, compressive resistance and light weight to adapt to more application scenarios. Some air ducts are used to discharge the flue gas of kilns and coal stoves. The flue gas contains a large amount of dust, and direct discharge will affect the surrounding environment. Content of the Utility Model

[0004] The purpose of the utility model is to provide an air duct with a filtering joint, which is provided with a filter net. The filter net can filter the flue gas, reduce the dust content of the exhausted gas and avoid environmental pollution.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An air duct with a filtering joint includes a tail pipe section and a filtering sleeve. The cross-section of the tail pipe section is rectangular, and the filtering sleeve is in the shape of a rectangular frame. The filtering sleeve is detachably sleeved on the front end of the tail pipe section. A circular notch is provided at the rear section of the inner wall of the filtering sleeve for detachably cooperating with the front end of the tail pipe section. Accommodating grooves are respectively provided on the four inner side walls of the circular notch. Limiting strips are arranged in all four accommodating grooves. The width of the limiting strip corresponds to the width of the accommodating groove. A guiding hole is provided at the bottom of the accommodating groove. A guiding rod is fixedly connected to the outer wall of the limiting strip. The guiding rod is slidably inserted through the guiding hole. A spring is sleeved on the guiding rod. The two ends of the spring respectively abut against the bottom wall of the limiting strip and the bottom of the accommodating groove. A limiting ring groove is provided on the outer wall of the front section of the tail pipe section. The limiting strip can slide into and be stuck in the limiting ring groove. A locking ring groove is provided on the peripheral surface of the guiding rod. A plurality of pairs of mating blocks are fixedly connected to the side wall of the filtering sleeve. A mating groove is provided inside the mating block. A clamping block is slidably connected to the two mating grooves. The clamping block includes a rectangular plate and two elastic arms. A locking notch is provided at the transverse edge of the rectangular plate for temporarily clamping the locking ring groove. Root bending parts are provided at the roots of the elastic arms. The two root bending parts are integrally formed with both sides of the locking notch respectively. The elastic arms have elasticity. The elastic arms and the mating grooves matched with them are slidably matched. A limiting hole is provided on the mating block. A limiting convex block is fixedly connected to the outer wall of the elastic arm for inserting into the limiting hole. A slot is provided on one side of the filtering sleeve. A filter net is slidably inserted into the slot.

[0007] Specifically, the end of the locking notch is arc-shaped, and the bottom diameter of the clamping ring groove corresponds to the arc.

[0008] Specifically, the end of the elastic arm is provided with an end bending portion bent outward.

[0009] Specifically, a pair of mating blocks are provided on each of the four outer side walls of the filter sleeve.

[0010] Specifically, the two mating blocks belonging to the same pair are both arranged longitudinally, and the two mating blocks belonging to the same pair are located on both sides of the guiding hole.

[0011] Specifically, a slot is provided on the top side wall of the filter sleeve, a filter net is slidably inserted into the slot, and a limiting strip is fixedly connected to the top side edge of the filter net.

[0012] Specifically, when the two elastic arms are in the reset state, the outer walls of the two elastic arms are both abutted against the bottom of the mating groove of the two mating blocks.

[0013] Specifically, connecting angle irons are fixedly connected to the tail side edges of the four side walls of the tail end pipe section.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The air duct is formed by connecting a section of pipe sections end to end, and the tail end pipe section is a section at the end of the air duct. Part of the air duct is used to discharge the flue gas of the kiln and coal stove. The flue gas contains a large amount of dust, and direct discharge will affect the surrounding environment. To solve the above technical problems, the present utility model sleeved a filter sleeve on the tail end pipe section. A receiving groove is provided on each of the four inner side walls of the filter sleeve, and a limiting clamping bar is provided in each of the four receiving grooves. A guiding rod is fixedly connected to the outer wall of the limiting clamping bar, and the guiding rod is slidably inserted into the guiding hole. A spring is sleeved on the guiding rod, and the two ends of the spring respectively abut against the bottom wall of the limiting clamping bar and the bottom of the receiving groove, so that the limiting clamping bar can enter the limiting ring groove provided on the tail end pipe section, thereby clamping the front end of the tail end pipe section into the annular notch, realizing the connection between the filter sleeve and the tail end pipe section.

[0016] After the filter net is inserted into the slot, the filter net can filter the flue gas, reduce the dust content of the discharged gas, and avoid environmental pollution. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a combined state view of the tail end pipe section and the filter sleeve;

[0019] Figure 2 View of the filter sleeve;

[0020] Figure 3 Cross-sectional view of the combined state of the tail end pipe section and the filter sleeve;

[0021] Figure 4 Another view of the combined state of the tail end pipe section and the filter sleeve;

[0022] Figure 5 View of the limit clamping strip.

[0023] In the figure:

[0024] 1. Tail end pipe section; 11. Limit ring groove; 12. Connecting angle iron;

[0025] 2. Filter sleeve; 21. Annular notch; 211. Accommodating groove; 212. Guide hole; 22. Fitting block; 221. Fitting groove; 222. Limit hole; 23. Slot;

[0026] 3. Limit clamping strip; 31. Guide rod; 311. Stopping ring groove; 32. Spring;

[0027] 4. Clamping block; 41. Elastic arm; 411. Limit projection; 42. Locking notch;

[0028] 5. Filter net; 51. Limit strip. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0030] See Figures 1 to 5 , an air duct with a filter joint, including a tail end pipe section 1 and a filter sleeve 2. The cross-section of the tail end pipe section 1 is rectangular. The filter sleeve 2 is in the shape of a rectangular frame and is detachably sleeved on the front end of the tail end pipe section 1.

[0031] An annular notch 21 is provided at the rear section of the inner wall of the filter sleeve 2 for detachably cooperating with the front end of the tail end pipe section 1. Accommodating grooves 211 are respectively provided on the four inner side walls of the annular notch 21, and limit clamping strips 3 are provided in all the four accommodating grooves 211. The width of the limit clamping strip 3 corresponds to the width of the accommodating groove 211.

[0032] The bottom of the accommodation groove 211 is provided with a guiding hole 212. A guiding rod 31 is fixedly connected to the outer wall of the limiting clamping strip 3. The guiding rod 31 is slidably inserted through the guiding hole 212. A spring 32 is sleeved on the guiding rod 31. The two ends of the spring 32 respectively abut against the bottom wall of the limiting clamping strip 3 and the bottom of the accommodation groove 211. A limiting ring groove 11 is provided on the outer wall of the front section of the tail end pipe section 1. The limiting clamping strip 3 can slide to be clamped into the limiting ring groove 11.

[0033] A clamping stop ring groove 311 is provided on the peripheral surface of the guiding rod 31. A plurality of pairs of matching blocks 22 are fixedly connected to the side wall of the filter sleeve 2. A matching groove 221 is provided inside the matching block 22. A clamping block 4 is slidably connected to the two matching grooves 221. The clamping block 4 includes a rectangular plate and two elastic arms 41. A locking notch 42 is provided on the transverse edge of the rectangular plate. The locking notch 42 is used for temporarily clamping the clamping stop ring groove 311. Root bending parts are provided at the roots of the elastic arms 41. The two root bending parts are integrally formed with the two sides of the locking notch 42 respectively. The elastic arms 41 have elasticity. The elastic arms 41 and the matching grooves 221 matching therewith are slidably matched. The matching block 22 is provided with a limiting hole 222. A limiting convex block 411 is fixedly connected to the outer wall of the elastic arm 41. The limiting convex block 411 is used for being inserted into the limiting hole 222. A slot 23 is provided on one side of the filter sleeve 2. A filter net 5 is slidably inserted into the slot 23.

[0034] Specifically, the end of the locking notch 42 is arc-shaped, and the bottom diameter at the clamping stop ring groove 311 corresponds to the arc.

[0035] Specifically, the end of the elastic arm 41 is provided with an end bending part bent outwards.

[0036] Specifically, a pair of matching blocks 22 are provided on each of the four outer side walls of the filter sleeve 2.

[0037] Specifically, the two matching blocks 22 belonging to the same pair are both arranged longitudinally, and the two matching blocks 22 belonging to the same pair are located on both sides of the guiding hole 212.

[0038] Specifically, a slot 23 is provided on the top side wall of the filter sleeve 2. A filter net 5 is slidably inserted into the slot 23. A limiting strip 51 is fixedly connected to the top side edge of the filter net 5.

[0039] Specifically, when the two elastic arms 41 are in the reset state, the outer walls of the two elastic arms 41 both abut against the bottom of the matching grooves 221 of the two matching blocks 22.

[0040] Specifically, connecting angle irons 12 are fixedly connected to the tail side edges of the four side walls of the tail end pipe section 1.

[0041] The working principle of the air duct with a filter joint of the present utility model is as follows:

[0042] The air duct is formed by connecting sections of pipe segments end to end, and the end pipe segment 1 is a section at the end of the air duct. Part of the air duct is used to discharge the flue gas from the kiln and coal stove. The flue gas contains a large amount of dust, and direct discharge will affect the surrounding environment. To solve the above technical problems, in the present utility model, a filter sleeve 2 is sleeved on the end pipe segment 1. Accommodating grooves 211 are provided on the four inner side walls of the filter sleeve 2, and limit clamping strips 3 are provided in the four accommodating grooves 211. A guide rod 31 is fixedly connected to the outer wall of the limit clamping strip 3, and the guide rod 31 is slidably inserted through the guide hole 212. A spring 32 is sleeved on the guide rod 31, and the two ends of the spring 32 respectively abut against the bottom wall of the limit clamping strip 3 and the bottom of the accommodating groove 211, so that the limit clamping strip 3 can enter the limit ring groove 11 provided in the end pipe segment 1, thereby clamping the front end of the end pipe segment 1 into the annular notch 21, realizing the connection between the filter sleeve 2 and the end pipe segment 1.

[0043] After the filter net 5 is inserted into the slot 23, the filter net 5 can filter the flue gas, reduce the dust content of the exhausted gas, and avoid environmental pollution.

[0044] When it is necessary to remove the filter sleeve 2 from the end pipe segment 1, the two elastic arms 41 of the block 4 are pressed towards each other, so that the two swing and approach each other, so that the limit convex blocks 411 of the two are pulled out from the limit holes 222 of the two matching blocks 22 on both sides, so that the block 4 can slide along the matching groove 221. Then, the guide rod 31 is pulled outwards for a certain distance (overcoming the elastic force of the spring 32), and then the block 4 is pushed to slide along the matching groove 221, so that the locking notch 42 is inserted into the locking ring groove 311, and the edge of the locking notch 42 ( Figure 4 at A in the figure) catches the locking ring groove 311, so that the limit clamping strip 3 remains in the accommodating groove 211 and does not enter the limit ring groove 11. The above operations are performed on the four limit clamping strips 3, so that the four limit clamping strips 3 are not clamped into the limit ring groove 11, and the filter sleeve 2 can be removed from the end pipe segment 1 to remove the dust in the slot 23.

[0045] The above is only a preferred embodiment of the present utility model, and it is not a limitation to the present utility model in any form. Although the present utility model has been disclosed above with a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content within the scope of the technical solution of the present utility model to make equivalent embodiments of equivalent changes, but as long as it does not depart from the content of the technical solution of the present utility model, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An air duct with a filter joint, characterized in that: It includes a tail end pipe section and a filter sleeve. The cross-section of the tail end pipe section is rectangular. The filter sleeve is in the shape of a rectangular frame and is detachably sleeved on the front end of the tail end pipe section. A circular notch is provided at the rear section of the inner wall of the filter sleeve, and the circular notch is used for detachably cooperating with the front end of the tail end pipe section. Accommodating grooves are respectively provided on the four inner side walls of the circular notch, and limiting clamping bars are arranged in all four accommodating grooves. The width of the limiting clamping bar corresponds to the width of the accommodating groove. A guiding hole is provided at the bottom of the accommodating groove. A guiding rod is fixedly connected to the outer wall of the limiting clamping bar, and the guiding rod is slidably inserted through the guiding hole. A spring is sleeved on the guiding rod, and the two ends of the spring respectively abut against the bottom wall of the limiting clamping bar and the bottom of the accommodating groove. A limiting ring groove is provided on the outer wall of the front section of the tail end pipe section, and the limiting clamping bar can slide into and be clamped in the limiting ring groove. A locking ring groove is provided on the peripheral surface of the guiding rod. A plurality of pairs of mating blocks are fixedly connected to the side wall of the filter sleeve. A mating groove is provided inside the mating block, and two mating grooves are slidably connected with a clamping block. The clamping block includes a rectangular plate and two elastic arms. A locking notch is provided at the transverse edge of the rectangular plate, and the locking notch is used for temporarily clamping the locking ring groove. Root bending parts are provided at the roots of the elastic arms, and the two root bending parts are integrally formed with the two sides of the locking notch respectively. The elastic arms have elasticity, and the elastic arms and the mating grooves matching with them are slidably matched. A limiting hole is provided on the mating block, and a limiting convex block is fixedly connected to the outer wall of the elastic arm, and the limiting convex block is used for inserting into the limiting hole. A slot is provided on one side of the filter sleeve, and a filter net is slidably inserted into the slot.

2. The air duct with a filter joint according to claim 1, characterized in that: The end of the locking notch is arc-shaped, and the bottom diameter at the locking ring groove corresponds to this arc-shaped part.

3. The air duct with a filter joint according to claim 1, characterized in that: An end bending part bent outwards is provided at the end of the elastic arm.

4. The air duct with a filter joint according to claim 1, characterized in that: A pair of mating blocks are provided on each of the four outer side walls of the filter sleeve.

5. The air duct with a filter joint according to claim 4, wherein: The two mating blocks belonging to the same pair are both arranged longitudinally, and the two mating blocks belonging to the same pair are located on both sides of the guiding hole.

6. The air duct with a filter joint according to claim 1, wherein: A slot is provided on the top side wall of the filter sleeve, and a filter net is slidably inserted into the slot. A limiting strip is fixedly connected to the top side edge of the filter net.

7. The air duct with a filter joint according to claim 1, wherein: When the two elastic arms are in the reset state, the outer walls of the two elastic arms abut against the bottom of the mating grooves of the two mating blocks.

8. The air duct with a filter joint according to claim 1, characterized in that: Connecting angle irons are fixedly connected to the tail side edges of the four side walls of the tail end pipe section.

Images