CN218408504U

CN218408504U - Oxidation bag filter card seal structure

Info

Publication number: CN218408504U
Application number: CN202223099713.7U
Authority: CN
Inventors: 丁辉; 张洪军; 孟庆海; 王文涛; 李凌杰; 刘雨鑫; 刘丹
Original assignee: Shenyang Orient Titanium Industry Co ltd
Current assignee: Shenyang Orient Titanium Industry Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-01-31
Anticipated expiration: 2032-11-22

Abstract

The utility model relates to titanium white powder production equipment by chlorination process, in particular to a flower plate sealing structure of an oxidation bag filter, wherein a flower plate is clamped between an upper end cover and a lower shell of the oxidation bag filter, the outer side surfaces of the upper end cover and the lower shell are fixedly connected with equipment flanges, equipment flange backing rings are welded on the equipment flanges, the flower plate is positioned between the two equipment flange backing rings, and the two equipment flanges are fastened through fasteners so as to clamp the flower plate; the card includes orifice plate, card upper seal ring and card lower seal ring, offers a plurality of holes that are equipped with the filter bag on the orifice plate, and the upper surface rigid coupling of orifice plate outward flange has card upper seal ring, and the lower surface rigid coupling of orifice plate outward flange has card lower seal ring. The utility model discloses a sealing face welding card upper and lower sealing ring on the card, neither wholly increase card thickness, increase material cost, the sealed face thickness of reduction card influences intensity yet not simply, has realized the purpose of high strength, high economic nature, high leakproofness.

Description

Oxidation bag filter card seal structure

Technical Field

The utility model relates to a titanium white powder production facility of chlorination process, specifically speaking are oxidation bag filter card seal structure.

Background

In recent years, the technology for preparing titanium dioxide by a chlorination method starts. In the process of preparing titanium dioxide by a chlorination method, raw materials of high titanium slag and chlorine are subjected to chlorination reaction in a chlorination furnace under the participation of petroleum coke to generate crude titanium tetrachloride; the crude titanium tetrachloride is cooled and purified to obtain refined titanium tetrachloride, the refined titanium tetrachloride and oxygen are subjected to oxidation reaction in an oxidation reactor to generate titanium dioxide (titanium dioxide base material) and chlorine, and the materials discharged from the oxidation reactor mainly comprise excessive oxygen, generated chlorine, sealed nitrogen, a small amount of carbon dioxide and water vapor. The gas phase carries titanium dioxide base material (containing scar removing sand sprayed in an oxidation reactor) and is cooled by a cooling guide pipe (200-450 ℃), the titanium dioxide base material enters an oxidation bag filter for gas-phase and solid-phase separation, the separated solid phase (titanium dioxide base material) is sent to a size mixing tank for size mixing and then sent to a post-treatment process, and the gas phase is returned to the chlorination furnace for recycling.

The oxidation bag filter device adopts nickel-based alloy as a main body material, the material is imported and has higher price, and the cost of the device is reduced by controlling the thickness of the material while the strength of the device main body and a pattern plate is ensured. Nearly a hundred filter bags mounted on a faceplate inside the oxidation bag filter need to be replaced periodically, and the function is realized by disassembling a flange fastener of the device and opening an upper cover of the opening head. The gas phase medium of the inlet gas oxidation bag filter contains chlorine, and the medium is highly harmful, such as large harm to human bodies due to leakage. Therefore, it is more important to design a structure for improving the sealing performance of the device.

SUMMERY OF THE UTILITY MODEL

In order to prevent the chlorine gas in the gas phase medium of the existing oxidation bag filter from leaking, the utility model aims to provide an oxidation bag filter card sealing structure.

The purpose of the utility model is realized through the following technical scheme:

the pattern plate of the utility model is clamped between the upper cover and the lower shell of the seal head of the oxidation bag filter, the outer side surfaces of the upper cover and the lower shell are fixedly connected with equipment flanges, the equipment flange on the upper cover of the seal head is fixedly connected with an equipment flange bushing ring towards the surface of the pattern plate, the equipment flange on the lower shell is fixedly connected with an equipment flange bushing ring towards the surface of the pattern plate, the pattern plate is positioned between the equipment flange bushing ring on the upper cover of the seal head and the equipment flange bushing ring on the lower shell, and the equipment flange on the upper cover of the seal head and the equipment flange on the lower shell are fastened through fasteners so as to clamp the pattern plate; the card comprises a hole plate, an upper card sealing ring and a lower card sealing ring, a plurality of holes with filter bags are formed in the hole plate, the upper surface of the outer edge of the hole plate is fixedly connected with the upper card sealing ring, and the lower surface of the outer edge of the hole plate is fixedly connected with the lower card sealing ring.

Wherein: all be equipped with between the equipment flange grommet on colored board upper seal ring and the head upper cover and between colored board lower seal ring and the equipment flange grommet on the casing down and realize the sealed gasket of face, the contact surface of colored board upper seal ring and gasket and the contact surface of equipment flange grommet on the head upper cover and gasket are equipped with the hoop seal groove of realizing the line seal respectively, the contact surface of colored board lower seal ring and gasket and the contact surface of equipment flange grommet on the casing down are equipped with the hoop seal groove of realizing the line seal respectively.

The annular sealing groove is a V-shaped annular sealing groove, namely the axial section of the annular sealing groove is V-shaped; v-arrangement ring on the seal ring on the card upper seal ring, the seal ring under the card on the seal ring, the seal ring on the equipment flange grommet on the head upper cover, the seal ring on the equipment flange grommet under the casing is the multiunit that the quantity is the same, sets up with one heart.

The upper sealing ring and the lower sealing ring of the flower plate are respectively welded and fixed with the upper surface and the lower surface of the outer edge of the pore plate, secondary machining allowance after welding is reserved on the upper sealing ring of the flower plate and the lower sealing ring of the flower plate, and the upper sealing ring of the flower plate and the lower sealing ring of the flower plate after secondary machining are annular plates with the same thickness.

The lower surface of the pore plate is provided with a pattern plate frame for improving the anti-deformation performance of the pattern plate.

And the upper surface of the pore plate is fixedly connected with a plurality of flower plate lifting lugs.

The head upper cover includes upper cover and the shell ring that from top to bottom connects gradually, the lateral surface welding of shell ring has the equipment flange, the axial cross-section of equipment flange is the L type, one side of L type with shell ring welded fastening, the another side welding of L type has equipment flange backing ring.

The head upper cover is respectively provided with a gas outlet, a blowing opening and an upper pressure measuring opening, and the top of the head upper cover is welded with a lifting lug.

The casing includes by lower supreme lower cone and the barrel that connects gradually down, the barrel periphery is equipped with the support, the lateral surface welding of the barrel of support top has the equipment flange, the axial cross-section of equipment flange is the L type, one side of L type with barrel welded fastening, the welding of the another side of L type has the equipment flange grommet.

An air inlet and a lower pressure measuring port are respectively arranged on the lower shell, and a discharge port is formed in the bottom of the lower shell.

The utility model discloses an advantage does with positive effect:

1. the utility model discloses a sealed face part sets up sealing ring under colored board upper seal ring, the colored board about the colored board, neither wholly increases colored board thickness, increases material cost, and the sealed face thickness of reduction colored board influences intensity yet not simply, has realized the purpose of high strength, high economic nature, high leakproofness.

2. The utility model discloses cover equipment flange grommet on card upper seal ring and head and set up the sealed gasket that realizes the face seal between the equipment flange grommet under card and the card and on the casing down respectively between the equipment flange grommet, the contact of sealing ring and gasket and equipment flange grommet and the contact surface of gasket all set up multiunit V type ring to the seal groove under card upper seal ring, card, realized the face seal and added the form of line seal combined action.

3. The utility model discloses a sealed face of sealing ring and equipment flange grommet under sealing ring, the card on the card has set up multiunit V type ring to the seal groove, and the cooperation can be able to bear or endure the nonmetal soft gasket of higher temperature, has improved the sealing performance that O type circle was sealed in the past, has prolonged sealed life-span.

4. The utility model discloses a flange joint form makes things convenient for equipment fixing and maintenance, and overall structure satisfies under the prerequisite of operating mode, and required material school is few, reduces the required cost of equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial enlarged view of the connection structure of the flange clamping pattern plate of the apparatus of the present invention;

FIG. 3 is an enlarged view of a portion of the faceplate of FIG. 2;

FIG. 4 is a partial enlarged view of the contact position between the flange backing ring and the non-metallic soft gasket of the present invention;

FIG. 5 is a front view of the structure of the pattern plate of the present invention;

FIG. 6 is a top view of the structure of FIG. 5;

wherein: 1 is an upper end enclosure, 2 is a cylinder section, 3 is a cylinder body, 4 is a support, 5 is a lower cone, 6 is a discharge hole, 7 is an air inlet, 8 is a filter bag, 9 is a lower pressure measuring port, 10 is an upper pressure measuring port, 11 is a blowing port, 12 is an air outlet, 13 is a lifting lug, 14 is a gasket, 15 is a pattern plate, 16 is an equipment flange, 17 is an equipment flange backing ring, 18 is a stud, 19 is a spring washer, 20 is a nut, 21 is a pattern plate upper sealing ring, 22 is a pattern plate lower sealing ring, 23 is a pattern plate lifting lug, 24 is a pattern plate frame, 25 is an end socket upper cover, 26 is a lower shell, 27 is a pore plate, and 28 is a V-shaped annular sealing groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the flower plate 15 of the present invention is clamped between the upper cover 25 and the lower housing 26 of the oxidation bag filter, and the upper cover 25 and the lower housing 26 are combined by fasteners to connect the segment equipment into a whole. The lower shell 26 is provided with an air inlet 7 and a discharge port 6 at the bottom. An air outlet 12 and a blowing opening 11 are arranged on the upper cover 25 of the seal head. A lower pressure measuring port 9 is provided on the lower side of the faceplate 15 in the height direction, and an upper pressure measuring port 10 is provided on the upper side in the height direction. The above structures are all in the prior art and are not described herein again. The outer side surfaces of the upper end cover 25 and the lower shell 26 are fixedly connected with equipment flanges 16, the surface, facing the flower plate 15, of the equipment flange 16 on the upper end cover 25 is fixedly connected with an equipment flange lining ring 17, the surface, facing the flower plate 15, of the equipment flange 16 on the lower shell 26 is fixedly connected with an equipment flange lining ring 17, the flower plate 15 is located between the equipment flange lining ring 17 on the upper end cover 25 and the equipment flange lining ring 17 on the lower shell 26, and the equipment flange 16 on the upper end cover 25 and the equipment flange 16 on the lower shell 26 are fastened through fasteners so as to clamp the flower plate 15.

The head upper cover 25 of this embodiment is including the upper cover 1 and the shell ring 2 that connect gradually from top to bottom, and the outside welding of shell ring 2 has equipment flange 16, and equipment flange 16's axial cross-section is the L type, and one side and the shell ring 2 welded fastening of L type, and the another side welding of L type has equipment flange backing ring 17. The gas outlet 12 of this embodiment is opened at the top of the upper head 1, and four lifting lugs 13 are welded at the top of the upper head 1.

The lower shell 26 of this embodiment includes the lower cone 5 and the barrel 3 that connect gradually from bottom to top, and the barrel 3 periphery is equipped with support 4, and the outside welding of the barrel 3 of support 4 top has equipment flange 16, and the axial cross-section of equipment flange 16 is the L type, and one side and the barrel 3 welded fastening of L type have equipment flange backing ring 17 in the welding of the another side of L type. In this embodiment, the lower cone 5 is provided with an air inlet 7, and the discharge port 6 is provided at the bottom of the lower cone 5.

As shown in fig. 1 to 6, the card 15 of the present embodiment includes a circular hole plate 27, an upper card sealing ring 21, and a lower card sealing ring 22, the hole plate 27 is provided with a plurality of holes for containing the filter bags 8, the upper card sealing ring 21 is welded to the upper surface of the outer edge of the hole plate 27, and the lower card sealing ring 22 is welded to the lower surface of the outer edge of the hole plate 27.

Gaskets 14 for realizing surface sealing are arranged between the upper seal ring 21 of the flower plate and the equipment flange backing ring 17 on the seal head upper cover 25 and between the lower seal ring 22 of the flower plate and the equipment flange backing ring 17 on the lower shell 26, annular sealing grooves for realizing line sealing are respectively arranged on the contact surface of the upper seal ring 21 of the flower plate and the gasket 14 and the contact surface of the equipment flange backing ring 17 on the seal head upper cover 25 and the gasket 14, and annular sealing grooves for realizing line sealing are respectively arranged on the contact surface of the lower seal ring 22 of the flower plate and the gasket 14 and the contact surface of the equipment flange backing ring 17 on the lower shell 26 and the gasket 14. The gasket 14 of the present embodiment is a non-metallic soft gasket capable of withstanding a relatively high temperature (applicable temperature range-240 to +650 ℃), and is made of a reinforced flexible graphite plate (RSB).

The circumferential sealing groove of this embodiment is a V-shaped circumferential sealing groove 28, that is, the axial cross section of the circumferential sealing groove is V-shaped. The V-shaped annular sealing grooves 28 on the upper sealing ring 21 of the flower plate, the V-shaped annular sealing grooves 28 on the lower sealing ring 22 of the flower plate, the V-shaped annular sealing grooves 28 on the equipment flange lining ring 17 on the seal head upper cover 25 and the V-shaped annular sealing grooves 28 on the equipment flange lining ring 17 on the lower shell 26 are multiple groups which are same in number and are concentrically arranged.

The upper seal ring 21 and the lower seal ring 22 of the card of this embodiment are welded and fixed to the upper and lower surfaces of the outer edge of the orifice plate 27, respectively, and a post-welding secondary machining allowance is reserved for both the upper seal ring 21 and the lower seal ring 22 of the card, as shown by a dotted line in fig. 3, the upper seal ring 21 and the lower seal ring 22 of the card after the secondary machining are annular plates having the same thickness and a narrow width, and the width is 38mm. The processed precision and the levelness requirement at the processed surface are the same.

The card 15 of this embodiment still includes card lug 23 and card frame 24, and card frame 24 welds the lower surface in orifice plate 27 for guarantee card 15's roughness, improve card 15's bearing performance, when bearing external load, card 15 can not take place to warp, thereby has guaranteed the leakproofness. A plurality of (four in this embodiment) faceplate lugs 23 are fixed to the upper surface of the orifice plate 27.

The fastener of this embodiment includes stud 18, spring washer 19 and nut 20, and equipment flange 16 in the closing head upper cover 25 welds with equipment flange backing ring 17 and shell ring 2, and equipment flange 16 in lower casing 26 welds with equipment flange backing ring 17 and barrel 3. A gasket 14 is arranged between the upper surface of the upper seal ring 21 of the faceplate 15 and the contact surface of the equipment flange backing ring 17 on the upper cover 25 of the seal head, a gasket 14 is arranged between the lower surface of the lower seal ring 22 of the faceplate and the contact surface of the equipment flange backing ring 17 on the lower shell 26, all the studs 18, spring washers 19 and nuts 20 are arranged in sequence from bottom to top, and then the seal head is closed tightly. The stud 18 of this embodiment is a full threaded stud and the nut 20 is a hex-headed nut.

The utility model discloses a theory of operation does:

the outer side surfaces of the upper seal head cover 25 and the lower seal head cover 26 are respectively provided with an equipment flange 16, the regular replacement of the filter bag 8 is realized by disassembling a fastener on the equipment flange 16 and opening the upper seal head cover 25, a gasket 14 is arranged between the upper seal ring 21 of the card and the equipment flange lining ring 17 on the upper seal head cover 25, and the gasket 14 realizes surface sealing after the fastening is closed tightly through the fastener; the contact surface of the upper seal ring 21 of the card and the gasket 14 and the contact surface of the flange backing ring 17 of the equipment and the gasket 14 on the upper cover 25 of the seal head are all processed with a plurality of groups of V-shaped annular seal grooves to realize line seal, and the contact surface of the lower seal ring 22 of the card and the gasket 14 and the contact surface of the flange backing ring 17 of the equipment and the gasket 14 on the lower shell 26 are all processed with a plurality of groups of V-shaped annular seal grooves to realize line seal. The two equipment flanges 16 are connected through a fastener, the middle pattern plate 15 is clamped and fixed, and the gasket 14 and the V-shaped annular sealing groove are tightly attached to realize the sealing of the upper seal cover 25 and the lower shell 26. The pressure of the blowing opening 11 is also born by the weight of hundreds of filter bags 8 borne by the flower plate 15; in operation, the flower plate 15 has a tendency of concave deformation, and because the flower plate 15 is clamped by the equipment flange 16 and is a part of a sealing structure, the concave deformation of the flower plate 15 can cause the sealing failure of the equipment flange 16, and even the flower plate 15 falls off integrally. Therefore, the addition of the faceplate frame 24 to the orifice plate 27 can improve the deformation prevention performance of the faceplate 15. The thickness of the faceplate 15 is somewhat greater for its overall rigidity. However, since the material used for the pattern plate 15 is expensive, the thickness of the entire pattern plate 15 is increased, and the manufacturing cost is increased greatly. The whole thickness of the flower plate 15 is unchanged, and the strength of the whole flower plate 15 is influenced by simply thinning the sealing surface; therefore, the utility model discloses sealed face part sets up the colored board upper sealing ring 21 of taking multiunit V type ring to seal groove, colored board lower sealing ring 22 in the upper and lower of colored board 15, has both satisfied intensity and sealed requirement, has reduced manufacturing cost again.

During manufacturing, welding secondary machining allowances are reserved on the upper sealing ring 21 and the lower sealing ring 22 of the pattern plate, the upper sealing ring 21 and the lower sealing ring 22 of the pattern plate are respectively welded with the pore plate 27, only the upper sealing ring 21 and the lower sealing ring 22 of the pattern plate are machined, and finally a plurality of groups of V-shaped annular sealing grooves are machined.

The utility model provides a whole thickness of card reduce the not enough problem of intensity that leads to, realized sealing performance's promotion simultaneously to manufacturing cost has also obtained good control.

Claims

1. The utility model provides an oxidation bag filter card seal structure, the card is by the centre gripping between oxidation bag filter's head upper cover and lower casing, its characterized in that: the outer side surfaces of the upper end cover (25) and the lower shell (26) are fixedly connected with equipment flanges (16), the surface, facing the pattern plate (15), of the equipment flange (16) on the upper end cover (25) is fixedly connected with an equipment flange lining ring (17), the surface, facing the pattern plate (15), of the equipment flange (16) on the lower shell (26) is fixedly connected with an equipment flange lining ring (17), the pattern plate (15) is located between the equipment flange lining ring (17) on the upper end cover (25) and the equipment flange lining ring (17) on the lower shell (26), the equipment flange (16) on the upper end cover (25) and the equipment flange (16) on the lower shell (26) are combined through fasteners, and the pattern plate (15) is clamped; the card (15) includes orifice plate (27), card upper seal ring (21) and card lower seal ring (22), set up a plurality of holes that are equipped with filter bag (8) on orifice plate (27), the upper surface rigid coupling of orifice plate (27) outward flange has card upper seal ring (21), the lower surface rigid coupling of orifice plate (27) outward flange has card lower seal ring (22).

2. The oxidation bag filter card sealing structure of claim 1, wherein: all be equipped with between equipment flange grommet (17) on colored board upper seal ring (21) and head upper cover (25) and between colored board lower seal ring (22) and the equipment flange grommet (17) on casing (26) down and realize face seal gasket (14), the contact surface of colored board upper seal ring (21) and gasket (14) and the contact surface of equipment flange grommet (17) on head upper cover (25) and gasket (14) are equipped with respectively and realize the sealed hoop seal groove of line, the contact surface of colored board lower seal ring (22) and gasket (14) and the contact surface of equipment flange grommet (17) on casing (26) and gasket (14) down are equipped with respectively and realize the sealed hoop seal groove of line.

3. The oxidation bag filter card sealing structure of claim 2, wherein: the annular sealing groove is a V-shaped annular sealing groove (28), namely the axial section of the annular sealing groove is V-shaped; v-shaped annular seal grooves (28) on the upper seal ring (21) of the flower plate, V-shaped annular seal grooves (28) on the lower seal ring (22) of the flower plate, V-shaped annular seal grooves (28) on equipment flange backing rings (17) on the seal head upper cover (25), and V-shaped annular seal grooves (28) on equipment flange backing rings (17) on the lower shell (26) are multiple groups which are the same in quantity and are concentrically arranged.

4. The oxidation bag filter card sealing structure of claim 1, wherein: sealing ring (21) and sealing ring (22) under the card on the card respectively with orifice plate (27) outward flange upper and lower surface welded fastening, sealing ring (21) and sealing ring (22) under the card on the card all reserve and have the postweld secondary operation allowance, after the secondary operation sealing ring (21) and sealing ring (22) are the same annular slab of thickness under the card on the card.

5. The oxidation bag filter card sealing structure of claim 1, wherein: the lower surface of the pore plate (27) is provided with a pattern plate frame (24) for improving the deformation resistance of the pattern plate (15).

6. The oxidation bag filter card sealing structure of claim 1, wherein: the upper surface of the pore plate (27) is fixedly connected with a plurality of flower plate lifting lugs (23).

7. The oxidation bag filter card sealing structure of claim 1, wherein: the end socket upper cover (25) is including upper cover (1) and shell ring (2) that from top to bottom connect gradually, the lateral surface welding of shell ring (2) has equipment flange (16), the axial cross-section of equipment flange (16) is the L type, one side of L type with shell ring (2) welded fastening, the welding of the another side of L type has equipment flange grommet (17).

8. The oxidation bag filter card sealing structure of claim 1, wherein: an air outlet (12), a blowing opening (11) and an upper pressure measuring opening (10) are respectively arranged on the upper cover (25) of the sealing head, and a lifting lug (13) is welded at the top.

9. The oxidation bag filter card sealing structure of claim 1, wherein: lower casing (26) include by lower supreme lower cone (5) and barrel (3) that connect gradually, barrel (3) periphery is equipped with support (4), the outside welding of barrel (3) of support (4) top has equipment flange (16), the axial cross-section of equipment flange (16) is the L type, one side of L type with barrel (3) welded fastening, the welding of the another side of L type has equipment flange backing ring (17).

10. The oxidation bag filter card sealing structure of claim 1, wherein: the lower shell (26) is provided with an air inlet (7) and a lower pressure measuring port (9) respectively, and the bottom of the lower shell (26) is provided with a discharge port (6).