Nozzle mounting structure of water mist dust suppression system

Abstract

The utility model provides a nozzle installation structure of a water mist dust suppression system. An installation hole is formed in the nozzle installation structure, a fixed base plate is sleeved into the installation hole formed in a cover plate and is sealed and fixed through welding, a horn mouth piece penetrates into a center hole of the base plate, and a flange plate body is embedded in an annular blocking shoulder groove. A sealing disc, an upper pressing disc and a bottom disc center hole are sequentially stacked on a fixed bottom disc, the sealing disc center hole and the upper pressing disc center hole are coaxially opposite, and fastening bolts penetrate through corresponding upper pressing disc bolt through holes and sealing disc bolt through holes and then are fixedly connected with bottom disc threaded holes in a threaded mode. The sealing disc is clamped and sealed between the upper pressing disc and the fixed chassis; the upper part of the nozzle piece is screwed to the lower hole section of the sleeve hole of the connecting sleeve, and the outer wall of the lower section of the connecting sleeve is screwed and sleeved into an upper pressure plate center hole of the upper pressure plate; the external thread section of the joint piece is in threaded connection with the internal thread upper hole section at the upper part of the connecting sleeve; and the sleeve section of the joint piece is connected with one end of the PU hose. The utility model is very convenient and fast to mount and dismount, and has high leakproofness.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal equipment, and particularly relates to a nozzle installation structure of a water mist dust suppression system. Background Art

[0002] Belt conveyors are commonly used material conveying equipment. Some materials, such as coal, are prone to generating a large amount of dust during the transfer process. There are many reasons for the dust generation at the transfer stations of the feeding system. For example, raw materials are dry (low surface moisture) and prone to dust generation, the equipment at the transfer points (such as the feed pipe, chute, air lock, etc.) is not tightly sealed, the belt conveyor operates abnormally (running off track, fluctuating up and down, etc.), and the dust removal equipment is unreliable. However, the main reason is that the induced wind is generated due to the height difference of the feed pipe during the transfer of materials. There are different degrees of height differences between the upper belt and the lower belt at each transfer station. When the logistics passes through, the high-speed falling logistics compresses the air in the coal feed pipe, generating an air current, resulting in the dust flying at the outlet of the chute and the inlet of the feed pipe. The dust removal methods currently widely used at the transfer stations of the material conveying systems in enterprises such as thermal power plants and cement plants mainly include dry dust removal and wet dust removal.

[0003] The representative of wet dust removal is mainly spray dust removal. It is to install a water spray device at the front section of the belt chute and other positions to increase the humidity of the material to achieve the purpose of not being prone to dust generation. The spray devices at the transfer stations of belt conveyors are generally installed on the covers of the chute and the head shield. Therefore, it is necessary to provide a nozzle installation structure that can not only avoid the leakage of dust at the nozzle installation location but also facilitate the maintenance and replacement of the nozzle. Summary of the Utility Model

[0004] In view of the problems existing in the prior art, the utility model provides the following technical solutions:

[0005] A nozzle installation structure of a water mist dust suppression system, which includes

[0006] A fixed chassis, which is integrally in a disc shape. A chassis center hole is provided at the center of the disc body. An annular shoulder groove is provided at the upper orifice of the chassis center hole. A plurality of chassis threaded holes are provided on the disc body around the chassis center hole;

[0007] A sealing disc, which is integrally in a disc shape and is made of a sealing rubber material. A sealing disc center hole is provided at the center of the disc body. A plurality of sealing disc bolt through holes are provided on the disc body around the sealing disc center hole;

[0008] An upper pressing disc, which is integrally in a disc shape. An upper pressing disc center hole is provided at the center of the disc body. An internal thread is formed in the upper pressing disc center hole. A plurality of upper pressing disc bolt through holes are provided on the disc body around the upper pressing disc center hole;

[0009] A bell mouth part, which has a bell mouth-shaped body. An annular flange disc body extending radially outward along the orifice of the central hole 40 is formed at the top of the body;

[0010] A coupling sleeve, in which internal threads are respectively formed in the upper hole section and the lower hole section of the sleeve hole, and an external thread is formed on the outer wall of the lower sleeve section;

[0011] A nozzle part, whose body is cylindrical, a nozzle through hole is provided at the axis of the body, and an external thread is provided on the upper part of the outer wall of the body,

[0012] An installation hole is opened on the cover plate, the fixed chassis is sleeved into the installation hole, the gap between the fixed chassis and the hole wall of the installation hole is sealed by welding, the bell mouth part penetrates through the chassis center hole of the fixed chassis from top to bottom, and the flange plate body of the bell mouth part is embedded on the annular shoulder groove of the fixed chassis; A sealing disk and an upper pressing disk are sequentially stacked on the fixed chassis, the chassis center hole, the sealing disk center hole and the upper pressing disk center hole are coaxially aligned, the fastening bolt passes through the corresponding upper pressing disk bolt through hole and the sealing disk bolt through hole and is screwed and fixed with the chassis threaded hole, so as to fix the upper pressing disk on the fixed chassis and clamp and seal the sealing disk between the two; The upper part of the nozzle part is screwed into the lower hole section of the sleeve hole of the coupling sleeve, and the outer wall of the lower sleeve section of the coupling sleeve is screwed into the upper pressing disk center hole of the upper pressing disk; The external thread section of the joint part is screwed onto the internal thread upper hole section of the upper part of the coupling sleeve, and the sleeve section of the joint part is connected to one end of the PU hose.

[0013] Further, the outer diameter of the body of the bell mouth part and the aperture of the center hole gradually increase from top to bottom.

[0014] Further, the maximum outer diameter of the body of the bell mouth part is smaller than the aperture of the chassis center hole of the fixed chassis.

[0015] Further, the outer diameter of the flange plate body of the bell mouth part is larger than the aperture of the chassis center hole of the fixed chassis and less than or equal to the maximum inner diameter of the annular shoulder groove, and when the flange plate body is embedded on the annular shoulder groove, the upper surface of the whole bell mouth part is flush with the upper surface of the fixed chassis.

[0016] Further, a wrenching surface for facilitating its rotation by a wrench is formed on the outer wall of the middle sleeve section of the coupling sleeve.

[0017] Further, a wrenching surface for facilitating rotation by a wrench is formed in the middle of the nozzle part.

[0018] Further, the fixed chassis and the upper pressing disk are made of metal materials that can be welded.

[0019] Further, the bell mouth part, the nozzle body and the coupling sleeve are made of rust-proof metal materials.

[0020] Further, each fastening bolt is also sleeved with a sealing washer and a gasket, so as to seal the upper pressing disk bolt through hole under its head.

[0021] Furthermore, the bottom end face of the connecting sleeve presses against the sealing disc, and the disc body of the sealing disc near the central hole of the sealing disc is clamped between the flange disc body of the flared piece and the bottom end face of the connecting sleeve.

[0022] The structure of the utility model is simple, the performance is reliable, the installation and disassembly are very convenient and fast, the tightness is high, and it is convenient for maintenance and adjustment of individual nozzles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The attached drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a schematic cross-sectional view of the present utility model;

[0025] Figure 2 is an exploded schematic view of the components of the present utility model;

[0026] Figure 3 is a three-dimensional schematic view of the present utility model, and the cover plate is hidden in the figure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0028] In the description of the embodiments of the present utility model, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship when the product of this application is usually placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model or simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] The "multiple" mentioned in the present utility model refers to two or more (including two). The terms "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0030] Unless otherwise clearly defined and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0031] The present utility model will be described in detail below with reference to the attached drawings and in combination with the embodiments.

[0032] As shown in the figure, the installation component of the present utility model includes a fixed chassis 1, a sealing disc 2, an upper pressing disc 3, a bell mouth part 4, a nozzle body 5, a coupling sleeve 6, and a joint part 7.

[0033] The fixed chassis 1 is integrally in the shape of a disc body, with a chassis center hole 10 opened at the center of the disc body. An annular shoulder groove 12 is opened at the upper orifice of the chassis center hole 10, and chassis threaded holes 11 are opened on the disc body around the chassis center hole 10.

[0034] The sealing disc 2 is integrally in the shape of a disc body, made of sealing rubber material. A sealing disc center hole 20 is opened at the center of the disc body, and sealing disc bolt through holes 21 are opened on the disc body around the sealing disc center hole 20.

[0035] The upper pressing disc 3 is integrally in the shape of a disc body, with an upper pressing disc center hole 30 opened at the center of the disc body. An internal thread is formed in the upper pressing disc center hole 30, and upper pressing disc bolt through holes are opened on the disc body around the upper pressing disc center hole 30.

[0036] The bell mouth part 4 has a bell mouth-shaped body 42. The outer diameter of the body 42 and the aperture of the center hole 40 gradually increase from top to bottom. An annular flange disc body 41 extending radially outward along the orifice of the center hole 40 is formed at the top of the body.

[0037] The maximum outer diameter of the body of the bell mouth part 4 is smaller than the aperture of the chassis center hole 10 of the fixed chassis 1, so that the body can pass through the chassis center hole 10 from top to bottom; the outer diameter of the flange disc body 41 is larger than the aperture of the chassis center hole 10 of the fixed chassis 1 and less than or equal to the maximum inner diameter of the annular shoulder groove 12, so that it can be embedded on the annular shoulder groove 12 through the flange disc body 41. Preferably, the thickness of the flange disc body 41 satisfies that when the flange disc body 41 is embedded on the annular shoulder groove 12, the upper surface of the whole bell mouth part 4 is flush with the upper surface of the fixed chassis 1.

[0038] The coupling sleeve 6, the sleeve hole at its center is divided into upper, middle, and lower hole sections from top to bottom. Internal threads are respectively formed in the upper hole section and the lower hole section. The outer wall of the sleeve body is divided into upper, middle, and lower sleeve outer walls (61, 62, 63) from top to bottom. An external thread for screwing with the upper pressing disc center hole 30 is formed on the lower sleeve outer wall 63, and a wrenching surface 621 for facilitating its rotation by a wrench is formed on the middle sleeve outer wall 62.

[0039] The nozzle part 5, its body is in the shape of a cylinder, and a nozzle through hole 51 (see Figure 1 ) is opened at the axis of the body. External threads for screwing with the lower hole section of the sleeve hole of the coupling sleeve 6 are provided on the upper part 51 of the outer wall of the body, and a wrenching surface for facilitating rotation by a wrench is formed in the middle part 52.

[0040] The connector 7 uses an existing PC quick connector on the market. Its lower part 71 has an external thread for threaded connection with the internal thread hole section of the upper body 61 of the coupling sleeve 6, and its upper part is connected to the PU hose and then to the corresponding water mist distributor port.

[0041] The fixed chassis 1 and the upper pressing plate 3 are made of a weldable metal material, such as stainless steel.

[0042] The bell mouth part 4, the nozzle body 5 and the coupling sleeve 6 are made of a rust-proof metal material, such as stainless steel.

[0043] The connector 7 uses an existing PC quick connector on the market. It has an external thread section 71 for threaded connection with the internal thread hole section of the upper body 61 of the coupling sleeve 6, and the sleeve section is connected to the PU hose and then to the corresponding water mist distributor port.

[0044] The specific installation structure is combined Figure 1 As shown in the figure, installation holes 101 are opened on the guiding chute of the belt conveyor transfer station and the cover plate 100 of the head shield. Since the cover plate 100 is an arc-shaped plate with a curvature, to prevent the gap between the fixed chassis 1 and the cover plate 100 from being too large when the fixed chassis 1 is pressed against it and it is not easy to weld and seal the gap hidden under the fixed chassis 1, the installation holes 101 are made larger so that the fixed chassis 1 can be just inserted into them. Then, the gap between the fixed chassis 1 and the hole wall of the installation hole 101 is welded and sealed, so as to fix the fixed chassis 1 on the cover plate 100. Then, the bell mouth part 4 is inserted from top to bottom through the central hole 10 of the fixed chassis 1, and the flange body 41 is nested on the annular shoulder groove 12, and the upper surface of the whole bell mouth part 4 is flush with the upper surface of the fixed chassis 1;

[0045] The sealing disk 2 and the upper pressing plate 3 are sequentially stacked on the fixed chassis 1, so that the central hole 10 of the chassis, the central hole 20 of the sealing disk and the central hole 30 of the upper pressing plate are coaxially aligned. And adjust to make the threaded holes 11 of each chassis, the bolt through holes 21 of the sealing disk and the bolt through holes of the upper pressing plate coaxially aligned one by one. Then, the fastening bolts 8 are respectively passed through the corresponding bolt through holes of the upper pressing plate and the bolt through holes 21 of the sealing disk and then screwed and fixed with the threaded holes 11 of the chassis, so as to fix the upper pressing plate 3 on the fixed chassis 1 and clamp and seal the sealing disk 2 between the two;

[0046] Furthermore, each fastening bolt 8 is also sleeved with a sealing washer and a gasket 10, so as to seal the bolt through hole of the upper pressing plate under its head and enhance the overall sealing performance.

[0047] Screw the upper part 51 of the nozzle member 5 to the lower hole section of the sleeve hole of the coupling sleeve 6. Then, screw the outer wall 63 of the lower section of the coupling sleeve 6 into the central hole 30 of the upper pressure plate 3 of the upper pressure plate 3, and the bottom end surface of the coupling sleeve 6 presses against the sealing plate 2. It can also be seen from the figure that the disk body of the sealing plate 2 near the central hole 20 of the sealing plate is clamped between the flange disk body 41 of the flared mouth member 4 and the bottom end surface of the coupling sleeve 6, thereby enhancing the sealing effect here.

[0048] Then, screw the external thread section 71 of the joint member 7 to the internal thread upper hole section of the upper part of the coupling sleeve 6. The sleeve section of the joint member 7 is connected to one end of the PU hose, and the other end of the PU hose is connected to the corresponding water mist distributor port.

[0049] The flared mouth member 4, through its flared body, not only protects the nozzle holes of the nozzle body 5 from being blocked by dust, but also forms a certain air flow diffusion effect, increasing or restricting the coverage range of the spray.

[0050] For this installation structure, only the fixed chassis 1 needs to be welded and installed to provide a subsequent installation foundation. After that, the installation of each component is very convenient and fast, and it is also convenient for disassembly, maintenance, or replacement and adjustment.

[0051] If the nozzle body 5 needs to be replaced or adjusted, it is not necessary to remove the entire cover plate 100. Just unscrew the coupling sleeve 6, and then the nozzle body 5 can be taken out for replacement; the replacement and adjustment of the flared mouth member 4 are slightly more complicated, but it is also not necessary to remove the entire cover plate 100.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A nozzle installation structure for a water mist dust suppression system, characterized in that: include The fixed chassis is in the shape of a disk as a whole, with a chassis center hole in the center of the disk, an annular shoulder groove at the upper end of the chassis center hole, and a plurality of chassis threaded holes around the chassis center hole on the disk; The sealing disc is a disc-shaped body made of sealing rubber material. A sealing disc center hole is opened in the center of the disc body, and a plurality of sealing disc bolt passing holes are opened on the disc body around the sealing disc center hole; The upper pressure plate is in the form of a disc as a whole, with an upper pressure plate center hole in the center of the disc body, an internal thread formed in the upper pressure plate center hole, and a plurality of upper pressure plate bolt passing holes are formed on the disc body around the upper pressure plate center hole; The bell-mouthed member has a bell-mouthed body, and an annular flange body is formed at the top of the body and extends radially outward from the opening of the center hole 40; A connecting sleeve, wherein the upper hole section and the lower hole section of the sleeve hole are respectively formed with internal threads, and the outer wall of the lower sleeve section is formed with external threads; The nozzle part has a cylindrical body, a nozzle through hole is opened at the axis of the body, and an external thread is provided on the upper part of the outer wall of the body. A mounting hole is opened on the cover plate, and the fixed chassis is inserted into the mounting hole. The gap between the fixed chassis and the wall of the mounting hole is sealed by welding. The bell-mouth piece is inserted into the center hole of the chassis of the fixed chassis from top to bottom, and the flange body of the bell-mouth piece is embedded in the annular shoulder groove of the fixed chassis; the sealing plate and the upper pressure plate are stacked in sequence on the fixed chassis, and the center hole of the chassis, the center hole of the sealing plate and the center hole of the upper pressure plate are coaxially aligned, and the fastening bolts are passed through the corresponding upper pressure plate bolt through holes and the sealing plate bolt through holes and then screwed and fixed with the chassis threaded holes, thereby fixing the upper pressure plate on the fixed chassis and clamping the sealing plate to seal between the two; the upper part of the nozzle piece is screwed to the lower hole section of the connecting sleeve hole, and the outer wall of the lower section of the connecting sleeve is screwed into the center hole of the upper pressure plate of the upper pressure plate; the external threaded section of the connector piece is screwed to the internal threaded upper hole section of the upper part of the connecting sleeve, and the sleeve section of the connector piece is connected to one end of the PU hose.

2. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: The outer diameter of the body of the bell-mouth piece and the aperture of the center hole gradually increase from top to bottom.

3. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: The maximum outer diameter of the body of the bell-mouth piece is smaller than the diameter of the center hole of the chassis for fixing the chassis.

4. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: The outer diameter of the flange body of the bell-mouth piece is larger than the diameter of the center hole of the fixed chassis and is smaller than or equal to the maximum inner diameter of the annular shoulder groove. When the flange body is embedded in the annular shoulder groove, the upper surface of the bell-mouth piece as a whole is flush with the upper surface of the fixed chassis.

5. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: The outer wall of the middle sleeve of the connecting sleeve is formed with a wrench surface for facilitating the rotation of the middle sleeve by a wrench.

6. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: A wrench surface is formed in the middle of the nozzle member for convenient rotation by a wrench.

7. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: The fixed chassis and the upper pressure plate are made of metal materials that can be welded.

8. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: The bell mouth piece, nozzle body and connecting sleeve are made of rust-proof metal material.

9. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: Each fastening bolt is also sleeved with a sealing washer and a gasket, so as to seal the upper pressure plate bolt through hole under the head thereof.

10. The nozzle installation structure of the water mist dust suppression system according to claim 1, characterized in that: The bottom end surface of the connecting sleeve is pressed against the sealing disc, and the disc body of the sealing disc adjacent to the central hole of the sealing disc is sandwiched between the flange disc body of the bell mouth piece and the bottom end surface of the connecting sleeve.

Images