Silencing device for pulse valve of main tail bag dust collector of cement grinding mill

Abstract

The utility model relates to the technical field of silencing equipment, in particular to a cement grinding mill main tail bag dust collector pulse valve silencing device which comprises an inner pipe, a plurality of sets of first silencing holes are formed in the outer portion of the inner pipe, an inner cylinder is detachably connected to the outer portion of the inner pipe, a plurality of sets of second silencing holes are formed in the outer portion of the inner cylinder, and the first silencing holes are communicated with the second silencing holes. According to the pulse valve, the inner pipe is installed at the output end of the pulse valve, when the pulse valve is used, sound generated by gas can enter the sound attenuation cotton through the first through hole to be absorbed, the sound attenuation effect is good, and the sound attenuation effect is good. And through the straight-through arrangement of the inner pipe, the cleaning effect on the filter bag is not affected while gas output is not affected, and gas can be fully absorbed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silencing equipment, especially a cement mill main tail bag dust collector pulse valve silencing device. BACKGROUND

[0002] The pulse bag type dust collector plays a key role in the dust collecting device of the cement mill. This device is an indispensable part of the grinding equipment in cement production and processing. The dust removal process of the dust collector depends on the pulse valve to control the rapid entry of high-pressure gas from the gas pocket into the injection pipe and the high-speed injection through the injection hole. This high-speed airflow enters the filter bag, causing the dust adsorbed on the filter bag to fall off and fall into the ash bucket. During the operation of the pulse bag type dust collector, each pulse valve action will emit a whistle due to the discharge of high-pressure gas at the exhaust port. Since multiple pulse valves are usually installed on a dust collector, a large amount of noise is generated during equipment operation.

[0003] In the prior art, a cement mill main tail bag dust collector pulse valve silencing device with publication number CN 216320716 U is disclosed, which belongs to the technical field of dust collector pulse valve silencing. The cement mill main tail bag dust collector pulse valve silencing device includes an inner tube, a middle tube, an outer tube, a connecting ring, a sealing plate, and a connecting pipe. The left end of the inner tube is provided with a thread, and the inner tube is installed on the exhaust port of the pulse valve through the thread. A connecting ring is installed on one side of the inner tube near the thread, and a first clamping groove and a second clamping groove coaxial with the inner tube are formed in the connecting ring. The middle tube is installed outside the inner tube through the first clamping groove, and the outer tube is installed outside the middle tube through the second clamping groove. The right end of the outer tube is provided with a sealing plate, and the sealing plate is provided with a connecting pipe connected with the outer tube.

[0004] In this patent, the output airflow is blocked by the first and second blocking blocks, which reduces the speed of the airflow and also reduces the cleaning effect on the filter bag. UTILITY MODEL CONTENTS

[0005] In view of the technical problems of the patent mentioned in the background art, the output airflow is blocked by the first and second blocking blocks, which reduces the speed of the airflow and also reduces the cleaning effect on the filter bag. The utility model provides a cement mill main tail bag dust collector pulse valve silencing device.

[0006] The technical scheme adopted by the utility model is as follows: a cement mill main tail bag dust collector pulse valve silencing device, which comprises an inner tube, a plurality of first silencing holes are arranged on the outer portion of the inner tube, an inner cylinder is detachably connected to the outer portion of the inner tube, a plurality of second silencing holes are arranged on the outer portion of the inner cylinder, and the outer portion of the inner tube is fixedly connected with silencing cotton of an annular structure corresponding to the first silencing holes.

[0007] In one of the embodiments, the outer part of the inner tube is detachably fixedly connected with an outer cover, and the outer cover is filled with sound-absorbing material between the inner tube.

[0008] In one of the embodiments, the outer part of the inner tube is fixedly connected with an outer thread ring and an inner thread ring, the inner tube is threadedly connected with the outer thread ring, and the outer cover is threadedly connected with the inner thread ring.

[0009] In one of the embodiments, the two ends of the inner tube are both provided with thread grooves.

[0010] In one of the embodiments, the sound-absorbing assembly is an annular strip, and the annular strip is fixedly connected between two adjacent sound-absorbing cottons.

[0011] In one of the embodiments, the cross section of the annular strip is a wave-shaped structure.

[0012] In one of the embodiments, the diameter of the second through hole is greater than that of the first through hole.

[0013] The utility model discloses beneficial effects are: compared with the prior art, in the utility model, install the inner tube at the output end of pulse valve, when pulse valve uses, the sound of gas generation can enter the sound-absorbing cotton and be absorbed through the first through hole, through the straight -through setting of inner tube, will not affect the gas output while not affecting the cleaning effect to filter bag, and can also fully absorb gas. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the cross section structure schematic diagram of the utility model;

[0016] Figure 3 It is Figure 2 The enlarged structure schematic diagram of area A in the utility model;

[0017] Figure 4 It is the structure schematic diagram of the inner tube in the utility model;

[0018] Figure 5 It is the structure schematic diagram of the annular strip of the outer part of the inner tube in the utility model;

[0019] Figure 6 It is the structure schematic diagram of the annular strip in the utility model;

[0020] Figure 7 It is the cross section structure schematic diagram of the annular strip in the utility model.

[0021] Marked in the figure: 1, inner tube; 2, thread groove; 3, first sound hole; 4, sound absorbing cotton; 5, annular strip; 6, outer thread ring; 7, inner thread ring; 8, outer cover; 9, inner cylinder; 10, second sound hole. DETAILED DESCRIPTION

[0022] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0023] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] The utility model is further described below in combination with the drawings Figures 1-7 The utility model is further described below in combination with the drawings

[0025] In order to solve the problems in the background art, the present application proposes the following technical scheme: a cement mill main tail bag dust collector pulse valve silencing device, comprising an inner tube 1, a plurality of first sound holes 3 are arranged on the outer portion of the inner tube 1, an inner cylinder 9 is detachably connected to the outer portion of the inner tube 1, a plurality of second sound holes 10 are arranged on the outer portion of the inner cylinder 9, and the diameter of the second through hole is greater than that of the first through hole, so as to further absorb noise.

[0026] In this embodiment, sound absorbing cotton 4 of annular structure is fixedly connected to the corresponding first sound hole 3 on the outer portion of the inner tube 1, and sound absorbing assemblies are connected between adjacent two sound absorbing cottons 4. Sound directly enters the sound absorbing cotton 4 through the first through hole for absorption, thereby reducing noise.

[0027] In addition, an outer cover 8 is detachably fixedly connected to the outer portion of the inner tube 1, and sound absorbing material is filled between the outer cover 8 and the inner cylinder 9. The sound absorbing material can be sound absorbing sponge, which is used for further absorbing noise.

[0028] Among them, the outer thread ring 6 and the inner thread ring 7 are fixedly connected to the outer portion of the inner tube 1, the inner cylinder 9 is threadedly connected with the outer thread ring 6, the outer cover 8 is threadedly connected with the inner thread ring 7, the detachable fixed connection of the two is realized, and the thread groove 2 is arranged at both ends of the inner tube 1, which is used for connecting with the pulse valve.

[0029] In the embodiment, the sound-absorbing assembly is an annular strip 5 made of sound-absorbing material, and the annular strip 5 is fixedly connected between two adjacent sound-absorbing cottons 4, and the cross section of the annular strip 5 is in a wave shape, which can fully absorb noise.

[0030] In order for those skilled in the art to understand the technical solutions, the use method of the embodiment is as follows:

[0031] The inner tube 1 is installed at the output end of the pulse valve, when the pulse valve is used, the sound generated by the gas enters the sound-absorbing cotton 4 through the first through hole for absorption, and is further absorbed by the annular strip 5, and the cross section of the annular strip 5 is in a wave shape, which can fully absorb noise, and the sound can be further absorbed by filling the sound-absorbing material between the outer cover 8 and the inner cylinder 9; thus, in the embodiment, the straight-through arrangement of the inner tube 1 does not affect the output of the gas, and the gas can also be fully absorbed.

[0032] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the mechanical parts and equipment adopt conventional types in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and details are not described herein, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0033] Although the embodiments of the utility model have been shown and described, for those skilled in the art, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cement mill main bag filter pulse valve silencer device, characterized in that, The utility model provides an inner tube (1), the outside of inner tube (1) is equipped with a plurality of first sound holes (3), the outside of inner tube (1) is detachably connected with inner cylinder (9), the outside of inner cylinder (9) is equipped with a plurality of second sound holes (10), the outside of corresponding first sound holes (3) of inner tube (1) is fixedly connected with annular structure's sound absorbing cotton (4), and the adjacent two sound absorbing cotton (4) are connected with sound absorbing assembly.

2. A silo main tail bag precipitator pulse valve silencer according to claim 1, characterized in that, The outside of the inner tube (1) is detachably fixedly connected with the outer cover (8), and the outer cover (8) and the inner cylinder (9) are filled with sound absorbing material.

3. A silo main bag deduster pulse valve silencer according to claim 2, characterized in that, The outer surface of the inner tube (1) is fixedly connected with an outer threaded ring (6) and an inner threaded ring (7), the inner cylinder (9) is screwed with the outer threaded ring (6), and the outer cover (8) is screwed with the inner threaded ring (7).

4. A silo main bag pulse valve silencer according to claim 3, characterized in that, Both ends of the inner tube (1) are provided with threaded grooves (2).

5. A cement mill main bag filter pulse valve silencer according to claim 4, characterized in that, The sound absorbing assembly is an annular strip (5) fixedly connected between the adjacent two sound absorbing cotton (4).

6. A cement mill main bag filter pulse valve silencer according to claim 5, characterized in that, The cross section of the annular strip (5) is a wave-shaped structure.

7. A cement mill main bag filter pulse valve silencer according to claim 6, characterized in that, The diameter of the second through hole is larger than that of the first through hole.

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