Phosphoric acid filter disc flooding gas collecting device

Abstract

The utility model discloses a filter disc flooding gas collecting device of a phosphoric acid filter, and relates to the technical field of filter flooding gas treatment. The suction filtration device comprises a sleeve shell assembly and a suction filtration assembly, the sleeve shell assembly comprises two sleeving cylinders and two flange top connection ring pieces, the suction filtration assembly comprises two gas collection ring pipes, a suction filtration three-way culvert pipe and a gas outlet pipe, one ends of the two sleeving cylinders are in threaded sleeving connection with each other, the two flange top connection ring pieces are slidably sleeved with the sleeving cylinders, and the two gas collection ring pipes are in threaded sleeving connection with the gas outlet pipe. The gas collecting ring pipes are installed on one side of the flange top connection ring piece, one ends of the two gas collecting ring pipes are communicated with the gas inlet ends of the two ends of the suction filtration three-way culvert pipe through pipelines respectively, and the gas outlet pipe is fixedly installed at the gas outlet end of the suction filtration three-way culvert pipe. According to the utility model, the suction filtration component is used for absorbing flooding gas overflowing from the flange joint of the filter and the phosphoric acid conveying pipeline; and the gas collecting ring pipe is used for collecting the flooding gas discharged from the flange top connecting ring piece, and the flooding gas is conveyed into the suction filtration three-way culvert pipe through the pipeline and finally discharged into flooding gas recovery equipment through the gas outlet pipe.

Description

Technical Field

[0001] This utility model belongs to the field of gas treatment technology for filter presses, and in particular relates to a gas collection device for filter discs of a phosphoric acid filter press. Background Technology

[0002] In the production process of phosphoric acid, a filter is required for filtration. Since phosphoric acid carries a lot of heat after filtration, a large amount of hot gas will overflow from the filter disc during filtration. This gas, carrying a large amount of heat and phosphoric acid vapor, leaks into the phosphoric acid processing workshop through the flange connection between the filter shell and the pipeline. This results in a significant heat loss of phosphoric acid during the filtration process. In addition, the phosphoric acid vapor carried in the gas can cause dermatitis and nasal mucosal atrophy in people in the workshop, and may even cause systemic poisoning.

[0003] To address this issue, we provide a phosphoric acid filter disc gas collection device to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a gas collection device for a phosphoric acid filter disc. This device involves connecting two sleeves in the housing assembly to the flange connection between the filter housing and the phosphoric acid delivery pipeline, and placing two flange top rings inside the sleeves against both sides of the flange. The suction filter assembly absorbs the gas overflowing from the flange connection between the filter and the phosphoric acid delivery pipeline. A gas collecting ring pipe in the suction filter assembly is fixedly installed on one side of the flange top ring, collecting the gas discharged from the flange top ring. This gas is then transmitted through a pipeline to the suction filter tee culvert and finally discharged from the outlet pipe to the gas recovery device.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a gas collection device for a phosphoric acid filter disc, comprising a housing assembly and a suction filter assembly. The housing assembly includes two sleeve cylinders and two flange top-connecting rings. The suction filter assembly includes two gas collecting ring pipes, a suction filter tee pipe, and an outlet pipe. One end of each of the two sleeve cylinders is threaded together. The two flange top-connecting rings are slidably fitted inside the sleeve cylinders. The gas collecting ring pipes are installed on the side of the flange top-connecting rings near the opening end of the sleeve cylinders and are connected to the flange top-connecting rings. The ends of the two gas collecting ring pipes away from the flange top-connecting rings are connected to the two inlet ends of the suction filter tee pipe respectively through pipelines. The outlet pipe is fixedly installed at the outlet end of the suction filter tee pipe.

[0007] The present invention is further configured such that an annular pipe sleeve is fixedly provided on the inner ring of one side plate of the two flange top connecting ring plates facing away from each other, and two gas collecting annular pipes are respectively fixedly sleeved on the outside of the two annular pipe sleeves.

[0008] The present invention is further configured such that an inner ring edge is fixedly provided on the inner wall of the end face of the two sleeves away from the threaded connection end, and a set of threaded channels is fixedly arranged in a circumferential array on the inner ring edge. The axis of the threaded channel is parallel to the cylinder axis of the sleeve, and a tightening stud is threaded into the threaded channel.

[0009] The present invention is further configured such that a top contact seat is threadedly connected to one end of the tightening stud extending into the sleeve, and a ball bearing seat is fixedly provided on the end face of the top contact seat away from the tightening stud. A set of hemispherical ball grooves are circumferentially arranged on the end face of the ball bearing seat away from the top contact seat, and balls are installed in the ball grooves. The balls rest on the plate surface of the flange top contact ring.

[0010] The present invention is further configured such that a ball cover is fixedly sleeved on the outer side of the ball seat, and a set of ball holes are circumferentially arrayed on the cover surface of the ball cover, with the end of the ball away from the ball seat passing through the ball hole.

[0011] The present invention is further configured such that vent holes are arranged in a circumferential array on the surface of the flange top connecting ring plate, and a set of vent pipes are fixed in a circumferential array on one end face of the gas collecting ring pipe near the flange top connecting ring plate, and each vent pipe is respectively sleeved in each vent hole.

[0012] The present invention is further configured such that the air outlet pipe is integrally formed by a connecting section, a converging section and a discharging section in sequence. The connecting section is connected to the air outlet end of the suction and filter tee culvert. The converging section gradually converges from the connecting section to the discharging section. An exhaust fan is installed inside the air outlet end of the suction and filter tee culvert.

[0013] This utility model has the following beneficial effects:

[0014] This invention involves attaching two sleeves from the housing assembly to the flange connection between the filter housing and the phosphoric acid delivery pipeline, and placing two flange top rings inside the sleeves against the sides of the flanges, allowing the suction filter assembly to absorb the gas overflowing from the flange connection between the filter and the phosphoric acid delivery pipeline.

[0015] This invention fixes the gas collecting ring pipe in the suction filter assembly to one side of the flange top connecting ring plate. The gas collecting ring pipe collects the gas discharged from the flange top connecting ring plate and transmits it through a pipeline to the suction filter tee culvert, and finally discharges it from the gas outlet pipe to the gas recovery equipment.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a gas collection device for a phosphoric acid filter disc;

[0019] Figure 2 This is an exploded view of the sleeve and the flange top connecting ring;

[0020] Figure 3 This is a structural schematic diagram of the housing assembly;

[0021] Figure 4 This is an exploded view of the flange top connecting ring and the gas collecting ring pipe;

[0022] Figure 5 This is an exploded view of the tightening stud and the top connector;

[0023] Figure 6 This is an exploded view of the suction tee and the outlet pipe;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1-Casing assembly, 101-Socket, 101a-Ring edge, 101a-1-Threaded channel, 101b-Tightening stud, 101b-1-Top connector, 101b-2-Ball bearing seat, 101b-3-Ball groove, 101b-4-Ball, 101b-5-Ball bearing cover, 101b-6-Ball bearing opening, 102-Flange top connector ring, 102a-Ring tube sleeve, 102b-Ventilation hole, 2-Suction filter assembly, 201-Gas collection ring tube, 201a-Ventilation tube, 202-Suction filter tee culvert, 202a-Exhaust fan, 203-Exhaust pipe, 203a-Connecting section, 203b-Converging section, 203c-Discharge section. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0027] Please see Figures 1 to 4This utility model relates to a gas collection device for a phosphoric acid filter disc, comprising a housing assembly 1 and a suction filter assembly 2. The housing assembly 1 includes two sleeve cylinders 101 and two flange top-connecting rings 102. The suction filter assembly 2 includes two gas collecting ring pipes 201, a suction filter tee pipe 202, and an outlet pipe 203. By connecting the two sleeve cylinders 101 in the housing assembly 1 to the flange connection between the filter housing and the phosphoric acid conveying pipeline, and by placing the two flange top-connecting rings 102 inside the sleeve cylinders 101 against the two sides of the flange, the suction filter assembly 2 absorbs the gas overflowing from the flange connection between the filter and the phosphoric acid conveying pipeline. By fixing the gas collecting ring pipes 201 in the suction filter assembly 2 to one side of the flange top-connecting rings 102, the gas collecting ring pipes 201 collect the gas discharged from the flange top-connecting rings 102 and transmit it through the pipeline to the suction filter tee pipe 202, and finally discharge it to the gas recovery equipment from the outlet pipe 203.

[0028] Specifically, one end of each of the two sleeves 101 is threaded together, and the two flange top connecting rings 102 are slidably fitted inside the sleeves 101. The gas collecting ring pipe 201 is installed on the side of the flange top connecting ring 102 near the opening end of the sleeve 101. The gas collecting ring pipe 201 is connected to the flange top connecting ring 102. The ends of the two gas collecting ring pipes 201 away from the flange top connecting ring 102 are connected to the two inlet ends of the suction tee culvert 202 through pipelines. The outlet pipe 203 is fixedly installed at the outlet end of the suction tee culvert 202.

[0029] Furthermore, an annular sleeve 102a is fixedly provided on the inner ring of one side of the two flange top connecting ring plates 102 facing away from each other, and two gas collecting ring pipes 201 are respectively fixedly sleeved on the outside of the two annular sleeve 102a, so that the connection between the gas collecting ring pipe 201 and the flange top connecting ring plate 102 is more stable.

[0030] Furthermore, an inner ring edge 101a is fixed to the inner wall of the end face of each of the two sleeves 101 away from the threaded connection end. A set of threaded channels 101a-1 is fixed in a circumferential array on the inner ring edge 101a. The axis of the threaded channel 101a-1 is parallel to the cylinder axis of the sleeve 101. A tightening stud 101b is threaded into the threaded channel 101a-1. The tightening stud 101b rotates in the threaded channel 101a-1 to press the flange top ring 102 against the flange connection.

[0031] Furthermore, a top contact seat 101b-1 is threaded onto one end of the tightening stud 101b extending into the sleeve 101. A ball bearing seat 101b-2 is fixed to the end face of the top contact seat 101b-1 away from the tightening stud 101b. A set of hemispherical ball grooves 101b-3 are circumferentially arranged on the end face of the ball bearing seat 101b-2 away from the top contact seat 101b-1. Balls 101b-4 are installed in the ball grooves 101b-3, and the balls 101b-4 rest on the plate surface of the flange top contact ring 102.

[0032] Furthermore, a ball cover 101b-5 is fixedly sleeved on the outer side of the ball seat 101b-2. A set of ball holes 101b-6 are circumferentially arrayed on the cover surface of the ball cover 101b-5. The end of the ball 101b-4 away from the ball seat 101b-2 passes through the ball hole 101b-6. When the tightening stud 101b is rotated to tighten, the ball 101b-4 rolls on the flange tightening ring 102, thereby reducing the friction with the flange tightening ring 102.

[0033] The operation process in this embodiment is as follows:

[0034] Two sleeves 101 are respectively fitted onto the flange connection between the filter housing and the phosphoric acid conveying pipeline, and the two flange top connecting rings 102 inside the sleeve 101 are respectively pressed against the two sides of the flange. The tightening studs 101b are rotated to press the flange top connecting rings 102 on both sides against the flange connection, and the gas discharged by the suction filter assembly 2 is absorbed by the flange top connecting rings 102. Example 2

[0035] Please see Figures 1 to 6 Based on Example 1, the gas collecting ring pipe 201 also includes a vent pipe 201a, and the suction filter tee pipe 202 also includes an exhaust fan 202a. The gas discharged from the flange top connecting ring plate 102 is recovered into the gas collecting ring pipe 201 through the vent pipe 201a, and the gas in the suction filter tee pipe 202 is blown into the exhaust pipe 203 through the exhaust fan 202a.

[0036] Specifically, the flange top connecting ring plate 102 has vent holes 102b arranged in a circumferential array on its plate surface, and a set of vent pipes 201a are fixed in a circumferential array on one end face of the gas collecting ring pipe 201 near the flange top connecting ring plate 102, with each vent pipe 201a being sleeved in each vent hole 102b.

[0037] Furthermore, the air outlet pipe 203 is integrally formed by the docking section 203a, the converging section 203b and the discharge section 203c. The docking section 203a is connected to the air outlet end of the suction filter tee pipe 202. The converging section 203b gradually converges from the docking section 203a to the discharge section 203c. An exhaust fan 202a is installed inside the air outlet end of the suction filter tee pipe 202.

[0038] The operation process in this embodiment is as follows:

[0039] The exhaust fan 202a blows the overflowing air in the suction filter tee 202 into the exhaust pipe 203, and pressurizes it by the converging section 203b in the exhaust pipe 203, so that the overflowing air can be easily recovered and treated.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A phosphoric acid filter disc off-gas collecting device comprising a sleeve assembly (1) and a suction filter assembly (2), characterized in that: The sleeve assembly (1) comprises two sleeve sockets (101) and two flange top connecting ring pieces (102), the suction filter assembly (2) comprises two gas collecting ring pipes (201), a suction filter tee pipe (202) and an air outlet pipe (203), one end of the two sleeve sockets (101) is threadedly sleeved with each other, the two flange top connecting ring pieces (102) are slidably sleeved in the sleeve sockets (101), the gas collecting ring pipes (201) are installed on one side of the flange top connecting ring pieces (102) close to the opening end of the sleeve sockets (101), the gas collecting ring pipes (201) are communicated with the flange top connecting ring pieces (102), the two gas collecting ring pipes (201) are communicated with the two air inlet ends of the suction filter tee pipe (202) through pipelines respectively, and the air outlet pipe (203) is fixedly installed on the air outlet end of the suction filter tee pipe (202).

2. The gas collection device for a filter disc of a phosphoric acid filter according to claim 1, characterized in that: The inner side plates of the two flange top connecting ring pieces (102) away from each other are fixedly provided with ring pipe sleeve pipes (102a), and the two gas collecting ring pipes (201) are fixedly sleeved outside the two ring pipe sleeve pipes (102a) respectively.

3. A phosphoric acid filter disc off-gas collection device according to claim 2, characterized in that: The inner walls of the end faces of the two sleeve sockets (101) away from the threaded connection ends are all fixedly provided with inner ring edges (101a), a group of threaded channels (101a-1) are fixedly arranged on the inner ring edges (101a) in the circumferential direction, the axis of the threaded channel (101a-1) is parallel to the cylinder axis of the sleeve socket (101), and a top pressing stud (101b) is threadedly sleeved in the threaded channel (101a-1).

4. The phosphoric acid filter disc gas collection device of claim 3, wherein: The end of the top pressing stud (101b) extending into the sleeve socket (101) is threadedly sleeved with a top connecting seat (101b-1), the end face of the top connecting seat (101b-1) away from the top pressing stud (101b) is fixedly provided with a ball seat (101b-2), the end face of the ball seat (101b-2) away from the top connecting seat (101b-1) is circumferentially arrayed with a group of hemispherical ball grooves (101b-3), a ball (101b-4) is installed in the ball groove (101b-3), and the ball (101b-4) is pressed on the plate face of the flange top connecting ring piece (102).

5. A phosphoric acid filter disc off-gas collection device according to claim 4, characterized in that: The outer side of the ball seat (101b-2) is fixedly sleeved with a ball cover (101b-5), a group of ball openings (101b-6) are circumferentially arrayed on the cover face of the ball cover (101b-5), and the end of the ball (101b-4) away from the ball seat (101b-2) penetrates through the ball opening (101b-6).

6. The phosphoric acid filter disc off-gas collection device of claim 1, wherein: A plurality of air permeable holes (102b) are circumferentially arrayed on the plate face of the flange top connecting ring piece (102), and a group of air permeable pipes (201a) are circumferentially fixedly arranged on the end face of the gas collecting ring pipe (201) close to the flange top connecting ring piece (102), and each air permeable pipe (201a) is sleeved in each air permeable hole (102b).

7. A phosphoric acid filter disc off-gas collection device according to claim 6, characterized in that: The air outlet pipe (203) is integrally formed by a docking section (203a), a converging section (203b) and a discharge section (203c) in sequence, the docking section (203a) is connected in communication with the air outlet end of the suction filter tee pipe (202), the converging section (203b) gradually converges from the docking section (203a) to the discharge section (203c), and the air outlet end of the suction filter tee pipe (202) is provided with an air extractor (202a).

Images