A bag filter device for phenylglycine production

Abstract

The utility model relates to the technical field of bag type filter, the utility model provides a bag type filter device for benzene glycine production, including filter bin: fixed ring is fixedly installed in the filter bin, is equipped with annular groove on the fixed ring, annular gasbag and annular rubber ring are movably installed in the annular groove, the annular rubber ring is located annular gasbag top, the inside side surface of annular groove is fixedly installed respectively with first limit ring and second limit ring, the side of annular gasbag is fixedly connected with air inlet pipe, and the pressure can be adjusted flexibly through the inflation of air inlet pipe, and the chamfer direction of cooperation first, second limit ring can accurately compensate the sealing surface gap and deviation caused by temperature change, pressure fluctuation or mechanical vibration. The annular rubber ring on top cooperates with the second sealing ring at the bottom of the sealing ring under the gasbag thrust, continuously tightly presses the sealing skirt of the filter screen, forms the dead angle sealing, and completely blocks the bypass path of unfiltered material liquid.

Description

Technical Field

[0001] This utility model relates to the field of bag filtration technology, specifically to a bag filtration device for phenylglycine production. Background Technology

[0002] In the production of phenylglycine, bag filters are crucial equipment for ensuring product purity. Their core function is to trap unreacted raw materials, catalyst residues, and fine impurities in the feed liquid through the filter bags, ensuring the smooth operation of subsequent processes. The sealing performance between the filter bag and the filtration unit directly determines the reliability of the filtration effect. If the seal fails, unfiltered feed liquid will "bypass" and mix into the filtrate through gaps, leading to a decrease in product purity and even batch-wide quality problems, causing serious economic losses.

[0003] In existing technologies, the sealing structure of bag filter devices mostly adopts the "single pressure plate compression" mode: the top opening edge of the filter bag directly contacts the sealing surface of the device housing, and the seal is achieved by the mechanical pressure of the pressure plate after the top cover is closed. When the filter bag ages or the pressure plate is slightly deformed, the traditional sealing structure cannot dynamically adjust the pressure, which will lead to the failure of the seal. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a bag filter device for phenylglycine production, which solves the technical problem that the existing bag filter device in phenylglycine production cannot dynamically compensate for gaps due to the sealing structure, resulting in the bypass of unfiltered liquid and a decrease in product purity.

[0005] According to one aspect, at least one embodiment of the present invention provides a bag filter device for phenylglycine production, comprising a filter chamber: a fixing ring is fixedly installed inside the filter chamber, an annular groove is formed on the fixing ring, an annular airbag and an annular rubber ring are movably installed in the annular groove, the annular rubber ring is located above the annular airbag, a first limiting ring and a second limiting ring are fixedly installed on the inner side surface of the annular groove respectively, the bottom of the first limiting ring and the bottom of the second limiting ring are both provided with chamfers, an air inlet pipe is fixedly connected to the side of the annular airbag, the air inlet pipe is movably inserted through the fixing ring by an O-ring seal, a through pipe is fixedly connected to the side of the filter chamber, the through pipe is fixedly connected to the air inlet pipe, a spring tube pressure gauge is fixedly installed on the through pipe, a rotating column is fixedly installed on the filter chamber by a first limiting block, a support arm is rotatably installed on the rotating column, a threaded rod is threaded to the other end of the support arm, a sealing cover is rotatably installed at the bottom of the threaded rod, a sealing ring is fixedly installed below the sealing cover by a plurality of support columns, and a second sealing ring is fixedly installed at the bottom of the sealing ring.

[0006] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production further includes: a plurality of limiting posts fixedly installed on the fixing ring, a clamping ring slidably installed on the plurality of limiting posts, a plurality of limiting through holes opened on the clamping ring, the limiting through holes cooperating with the limiting posts, a filter screen cylinder fixedly installed inside the fixing ring, a filter screen movably fitted on the outside of the filter screen cylinder, a clamping groove opened inside the clamping ring, the clamping groove clamping and fixing the sealing skirt of the filter screen by a plurality of bolts, and a second sealing ring tightly abutting the sealing skirt against the annular rubber ring.

[0007] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production is provided, which further includes: the filter cylinder includes a connecting ring, two sets of symmetrically distributed arc-shaped limiting blocks are fixed on the inner surface of the sealing ring, the two sets of arc-shaped limiting blocks press and fix the connecting ring on the fixing ring, a skeleton is fixedly installed on the lower surface of the connecting ring, and two sets of symmetrically distributed handles are fixedly installed on the upper surface of the connecting ring.

[0008] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production further includes: two sets of mating rods fixedly installed on the sealing cover, the mating rods being slidably connected to the support arm, a handwheel fixedly installed above the threaded rod, and a limiting rod fixedly installed on the side surface of the filter chamber via a second limiting block, the limiting rod being located on the front side of the support arm.

[0009] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production is provided, which further includes: a plurality of short columns are fixedly installed on the side surface of the filter chamber by a third limiting block, the short columns are evenly distributed on the side of the filter chamber, a rotating block is rotatably installed above the short columns, the end of the rotating block is provided with a protrusion, and a groove is provided at the corresponding position of the edge of the sealing cover.

[0010] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production is provided, which further includes: a feed pipe fixedly connected to the upper side of the filter chamber, a discharge pipe fixedly connected to the bottom of the filter chamber, and a connecting flange fixedly installed at the other end of the feed pipe and the other end of the discharge pipe.

[0011] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production is provided, which further includes: two sets of diaphragm pressure gauges distributed vertically are fixedly installed on the side of the filter chamber, and the diaphragm pressure gauges are all located in front of the limiting rod.

[0012] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production further includes: a support ring fixedly installed on the side surface of the filter chamber, three sets of symmetrically distributed fixing rods fixedly installed below the support ring, and a support block fixedly installed at the bottom of the fixing rods.

[0013] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production is provided, which further includes: three sets of symmetrically distributed lifting rings fixedly installed on the side surface of the support ring, and an anti-slip pad fixedly installed on the lower surface of the support block.

[0014] For example, in at least one embodiment of the present invention, a bag filter device for phenylglycine production is provided, which further includes: a first sealing ring fixedly installed on the upper surface of the filter chamber, and a sealing groove formed on the lower surface of the sealing cover, wherein the sealing groove cooperates with the first sealing ring.

[0015] The beneficial effects of the embodiments of this utility model are as follows: 1. In this invention, the annular airbag is embedded in the annular groove of the fixed ring. Inflation via the air inlet pipe allows for flexible pressure adjustment. Combined with the chamfered guidance of the first and second limiting rings, it precisely compensates for gaps and offsets in the sealing surface caused by temperature changes, pressure fluctuations, or mechanical vibrations. Under the thrust of the airbag, the upper annular rubber ring works in conjunction with the second sealing ring at the bottom of the sealing ring to continuously and tightly press against the sealing skirt of the filter screen, forming a seamless seal that completely blocks the bypass path of unfiltered liquid. A spring tube pressure gauge monitors the air pressure in real time to ensure a stable seal, effectively guaranteeing the filtration effect and the purity of the phenylglycine product.

[0016] 2. This utility model utilizes a handwheel to rotate a threaded rod to raise and lower the sealing cap, making operation simple and labor-saving, easily completed by a single person. During the raising and lowering of the sealing cap, two sets of mating rods slide against the support arm, ensuring smooth and stable movement without the need for multiple people to assist in alignment. After closing, the rotating block on the short column on the side of the filter compartment can quickly rotate to the sealing cap and lock it in place. Combined with the limiting rod's limiting effect on the support arm, the fixing is completed instantly. The entire process requires no multiple people to cooperate, greatly simplifying the installation process, significantly shortening the opening and closing time of the sealing cap, effectively improving installation efficiency, and saving labor costs. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the overall structure of a bag filter device for phenylglycine production in one embodiment of the present invention; Figure 2 This is a schematic diagram showing the opening of the sealing cover of a bag filter device for phenylglycine production in one embodiment of the present invention; Figure 3 for Figure 1 A cross-sectional view of the filter chamber in the embodiment; Figure 4 for Figure 2 An exploded view of the internal components of the filter chamber in the embodiment; Figure 5 for Figure 3 A cross-sectional view of the internal components of the filter chamber in the embodiment; Figure 6 for Figure 5 An enlarged schematic diagram of point A in the embodiment; Figure 7 for Figure 5 A cross-sectional view of the fixing ring and the sealing ring in the embodiment; Figure 8 for Figure 7 An enlarged schematic diagram of point B in the embodiment.

[0019] In the diagram: 1. Filter chamber; 2. Support ring; 3. Sealing cover; 4. Fixing rod; 5. Diaphragm pressure gauge; 6. Discharge pipe; 7. Limiting rod; 8. Handwheel; 9. Feed pipe; 10. Connecting flange; 11. Rotating column; 12. Support arm; 13. Threaded rod; 14. First sealing ring; 15. Short column; 16. Rotating block; 17. Through pipe; 18. Bourdon tube pressure gauge; 19. Lifting ring; 20. Support block; 21. Fixing ring; 22. Filter screen; 23. 24. Sealing groove; 25. Matching rod; 26. Support column; 27. Sealing ring; 28. Arc-shaped limiting block; 29. ​​Limiting column; 30. Frame; 31. Connecting ring; 32. Handle; 33. Sealing skirt; 34. Clamping ring; 35. Clamping groove; 36. Bolt; 37. Limiting through hole; 38. Second sealing ring; 39. Air inlet pipe; 40. Annular rubber ring; 41. Annular airbag; 42. First limiting ring; 43. Second limiting ring; 44. Annular groove. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0021] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1 to 8As shown, this utility model provides a bag filter device for phenylglycine production, including a filter chamber 1. A fixing ring 21 is fixedly installed inside the filter chamber 1. An annular groove 43 is formed on the fixing ring 21. An annular airbag 40 and an annular rubber ring 39 are movably installed in the annular groove 43. The annular rubber ring 39 is located above the annular airbag 40. A first limiting ring 41 and a second limiting ring 42 are fixedly installed on the inner side surface of the annular groove 43, respectively. The bottom of the first limiting ring 41 and the bottom of the second limiting ring 42 are both provided with... The chamfered, annular airbag 40 has an air inlet pipe 38 fixedly connected to its side. The air inlet pipe 38 is movably inserted into the fixed ring 21 through an O-ring seal. The filter chamber 1 has a connecting pipe 17 fixedly connected to its side. The connecting pipe 17 is fixedly connected to the air inlet pipe 38. A spring tube pressure gauge 18 is fixedly installed on the connecting pipe 17. A rotating column 11 is fixedly installed on the filter chamber 1 through a first limiting block. A support arm 12 is rotatably installed on the rotating column 11. The other end of the support arm 12 is threadedly connected to a threaded rod 13. A rotatable... A sealing cover 3 has a sealing ring 26 fixedly installed below it via several support columns 25. A second sealing ring 37 is fixedly installed at the bottom of the sealing ring 26. Several limiting columns 28 are fixedly installed on the fixing ring 21. Clamping rings 33 are slidably installed on the limiting columns 28. Several limiting through holes 36 are provided on the clamping rings 33, which cooperate with the limiting columns 28. A filter screen cylinder is fixedly installed inside the fixing ring 21. A filter screen 22 is movably fitted on the outside of the filter screen cylinder. A clamping groove 34 is provided inside the clamping ring 33. The groove 34 clamps and fixes the sealing skirt 32 of the filter screen 22 with several bolts 35, and the second sealing ring 37 tightly abuts the sealing skirt 32 against the annular rubber ring 39; the filter screen cylinder includes a connecting ring 30, and two sets of symmetrically distributed arc-shaped limiting blocks 27 are fixed on the inner surface of the sealing ring 26. The two sets of arc-shaped limiting blocks 27 press and fix the connecting ring 30 to the fixing ring 21. A skeleton 29 is fixedly installed on the lower surface of the connecting ring 30, and two sets of symmetrically distributed handles 31 are fixedly installed on the upper surface of the connecting ring 30.

[0027] In use, the sealing skirt 32 at the top of the filter screen 22 is first tightly clamped and fixed in the groove 34 inside the clamping ring 33 by tightening several bolts 35. The sealing skirt 32 is made of fluororubber, with a width of 20-30mm and a thickness of 5-8mm. The depth of the groove 34 matches the thickness of the sealing skirt to ensure that the skirt is wrinkle-free after the bolts 35 are tightened. Then, with the cooperation of the limiting through hole 36 and the limiting post 28, the clamping ring 33 is slidably installed on the fixing ring 21, thereby quickly installing the filter screen 22 into the designated position. This installation method can quickly achieve the positioning and installation of the filter screen 22, improving portability. Then, the filter screen 22 is lifted by using two sets of handles 31. The filter cylinder is installed on the fixing ring 21. The handle 31 facilitates the insertion and removal of the filter cylinder. The skeleton 29 on the filter cylinder is inserted into the filter screen 22. The skeleton 29 is made of 304 stainless steel and has a cylindrical mesh structure. Its diameter is 2-3mm smaller than the inner wall of the filter screen 22, and its length is the same as that of the filter screen 22. The top of the skeleton is welded and fixed to the connecting ring 30, and a circular baffle is provided at the bottom to ensure that there is no radial displacement after the filter screen 22 is installed, and no significant deformation under a liquid pressure of 0.5MPa. The filter cylinder mainly supports the filter screen 22 to prevent deformation, protect it from damage, and position it to prevent displacement. The connecting ring 30 on the filter cylinder is locked by the fixing ring 21. When the sealing cover 3 is fixed... After sealing, the two sets of symmetrically distributed arc-shaped limiting blocks 27 on the sealing ring 26 below the sealing cover 3 will press and fix the connecting ring 30 onto the fixing ring 21; at the same time, the second sealing ring 37 at the bottom of the sealing ring 26 will push the sealing skirt 32 of the filter screen 22 downward, and the annular air bladder 40 will push the annular rubber ring 39 and the sealing skirt 32 upward. The annular rubber ring 39 and the second sealing ring 37 cooperate with each other to prevent unfiltered media from leaking from the gaps. At this time, the spring tube pressure gauge 18 will monitor the air pressure in the annular air bladder 40. The initial inflation pressure range of the annular air bladder is 0.1-0.3MPa; when the temperature of the liquid in the filter chamber exceeds 50℃, The inflation pressure needs to be increased to 0.2-0.4MPa; the monitoring threshold of the Bourdon tube pressure gauge is set to 0.1MPa and 0.5MPa. If it is lower or higher than the threshold, it needs to be adjusted by inflation and deflation through the air inlet pipe. The annular airbag 40 can compensate for the gap and offset of the sealing surface caused by temperature changes, pressure fluctuations or mechanical vibration, and always maintain a reliable seal, reducing the risk of leakage. The bottom of the first limiting ring 41 and the bottom of the second limiting ring 42 are both provided with chamfers. Their function is to guide the annular rubber ring 39 to rise evenly along the chamfered slope under the thrust of the annular airbag 40, to avoid the rubber ring from shifting due to uneven force, and to ensure that the force is consistent with the circumferential sealing surface of the sealing skirt 32.

[0028] In some examples, two sets of mating rods 24 are fixedly installed on the sealing cover 3. The mating rods 24 are slidably connected to the support arm 12. A handwheel 8 is fixedly installed above the threaded rod 13. A limiting rod 7 is fixedly installed on the side surface of the filter chamber 1 through a second limiting block. The limiting rod 7 is located on the front side of the support arm 12. Several short columns 15 are fixedly installed on the side surface of the filter chamber 1 through a third limiting block. The short columns 15 are evenly distributed on the side of the filter chamber 1. A rotating block 16 is rotatably installed above the short columns 15. The end of the rotating block 16 is provided with a protrusion. A groove is opened at the corresponding position on the edge of the sealing cover 3. A first sealing ring 14 is fixedly installed on the upper surface of the filter chamber 1. A sealing groove 23 is opened on the lower surface of the sealing cover 3. The sealing groove 23 and the first sealing ring 14 cooperate with each other.

[0029] In use, first rotate the sealing cover 3 counterclockwise. Under the action of the limiting rod 7, the support arm 12 is rotated to the designated position. Then, by rotating the handwheel 8, the threaded rod 13 is driven to rotate. Under the action of the two sets of limiting rods 7 and the support arm 12, the sealing cover 3 begins to move downward until the first sealing ring 14 fixedly installed on the upper surface of the filter chamber 1 is locked into the sealing groove 23 opened on the lower surface of the sealing cover 3, thereby stopping the rotation of the handwheel 8. Then, rotate the rotating block 16. After the rotating block 16 rotates, the protrusion is embedded into the groove, realizing the mechanical locking of the sealing cover 3.

[0030] In some examples, a feed pipe 9 is fixedly connected to the upper side of the filter chamber 1, and a discharge pipe 6 is fixedly connected to the bottom of the filter chamber 1. A connecting flange 10 is fixedly installed at the other end of the feed pipe 9 and the other end of the discharge pipe 6. Two sets of diaphragm pressure gauges 5 are fixedly installed on the side of the filter chamber 1, and the diaphragm pressure gauges 5 are all located in front of the limit rod 7.

[0031] During use, the material to be filtered enters the filter chamber 1, and the filtered material flows out from the discharge pipe 6. The diaphragm pressure gauge 5 located at the top monitors the pressure of the material before filtration, and the diaphragm pressure gauge 5 located at the bottom monitors the pressure of the material after filtration. At the same time, the pressure before and after filtration is measured. The filter bag blockage status can be judged by the pressure difference between the inlet and outlet, abnormal filtration efficiency can be evaluated, and the system pressure safety can be ensured.

[0032] In some examples, a support ring 2 is fixedly installed on the side surface of the filter chamber 1, and three sets of symmetrically distributed fixing rods 4 are fixedly installed below the support ring 2. A support block 20 is fixedly installed at the bottom of the fixing rod 4. Three sets of symmetrically distributed lifting rings 19 are fixedly installed on the side surface of the support ring 2, and an anti-slip pad is fixedly installed on the lower surface of the support block 20.

[0033] When in use, the device is first hoisted to a suitable position using three sets of hoisting rings 19. The anti-slip pads at the bottom of the support block 20 can improve the stability of the device during operation.

[0034] Working principle and usage process of this utility model: Before use, the device is hoisted to a suitable position using three sets of hoisting rings 19. The anti-slip pads at the bottom of the support block 20 improve the stability of the device during operation. During use, several bolts 35 are tightened to secure the sealing skirt 32 at the top of the filter screen 22 within the clamping groove 34 on the inner side of the clamping ring 33. Then, with the cooperation of the limiting through hole 36 and the limiting post 28, the clamping ring 33 is slidably installed on the fixing ring 21, thus quickly installing the filter screen 22 to the designated position. This installation method allows for rapid positioning and installation of the filter screen 22, improving portability. Subsequently, the filter screen cylinder is installed on the fixing ring 21 using two sets of handles 31. The handles 31 facilitate the insertion and removal of the filter screen cylinder. The frame 29 on the filter screen cylinder is inserted into the filter screen 22, filtering... The screen cylinder mainly supports the filter screen 22 to prevent deformation, protect it from damage, and position it to prevent displacement. The connecting ring 30 on the filter screen cylinder is locked by the fixing ring 21. Then, the sealing cover 3 is rotated counterclockwise. Under the action of the limiting rod 7, the support arm 12 is rotated to the designated position. Then, the threaded rod 13 is rotated by rotating the handwheel 8. Under the action of the two sets of limiting rods 7 and the support arm 12, the sealing cover 3 begins to move downward until the first sealing ring 14, which is fixedly installed on the upper surface of the filter chamber 1, is locked into the sealing groove 23 opened on the lower surface of the sealing cover 3. This further improves the overall sealing performance of the device and prevents material from leaking from the connection between the filter chamber 1 and the sealing cover 3. Then, the rotation stops and the handwheel 8 is turned. The rotating block 16 is rotated to lock the sealing cover 3.

[0035] Once the sealing cap 3 is secured, the two symmetrically distributed arc-shaped limiting blocks 27 on the sealing ring 26 below the sealing cap 3 will press and fix the connecting ring 30 onto the fixing ring 21. At the same time, the second sealing ring 37 at the bottom of the sealing ring 26 will push the sealing skirt 32 of the filter screen 22 downwards, and the annular airbag 40 will push the annular rubber ring 39 and the sealing skirt 32 upwards. The annular rubber ring 39 and the second sealing ring 37 cooperate with each other to prevent unfiltered media from leaking from the gaps. At this time, the spring tube pressure gauge 18 will press the annular airbag. The air pressure within the 40 ring is monitored. The initial inflation pressure range of the ring airbag is 0.1-0.3 MPa. When the temperature of the liquid in the filter chamber exceeds 50°C, the inflation pressure needs to be increased to 0.2-0.4 MPa. The monitoring threshold of the Bourdon tube pressure gauge is set at 0.1 MPa and 0.5 MPa. If the pressure is lower or higher than the threshold, the inflation and deflation adjustment needs to be made through the air inlet pipe. The ring airbag 40 can compensate for the gaps and offsets of the sealing surface caused by temperature changes, pressure fluctuations or mechanical vibrations, and always maintain a reliable seal, reducing the risk of leakage.

[0036] The material to be filtered enters the filter chamber 1, and the filtered material flows out from the discharge pipe 6. The diaphragm pressure gauge 5 located at the top monitors the pressure of the material before filtration, and the diaphragm pressure gauge 5 located at the bottom monitors the pressure of the material after filtration. At the same time, the pressure before and after filtration is measured. The filter bag blockage status can be judged by the pressure difference between the inlet and outlet, abnormal filtration efficiency can be evaluated, and the system pressure safety can be ensured.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A bag filter device for phenylglycine production, characterized in that, Includes a filter chamber (1): A fixing ring (21) is fixedly installed inside the filter chamber (1). An annular groove (43) is provided on the fixing ring (21). An annular airbag (40) and an annular rubber ring (39) are movably installed in the annular groove (43). The annular rubber ring (39) is located above the annular airbag (40). A first limiting ring (41) and a second limiting ring (42) are fixedly installed on the inner side surface of the annular groove (43). The bottom of the first limiting ring (41) and the bottom of the second limiting ring (42) are both provided with chamfers. An air inlet pipe (38) is fixedly connected to the side of the annular airbag (40). The air inlet pipe (38) is movably inserted through the fixed ring by an O-ring seal. Inside the ring (21), a through pipe (17) is fixedly connected to the side of the filter chamber (1). The through pipe (17) is fixedly connected to the air inlet pipe (38). A spring tube pressure gauge (18) is fixedly installed on the through pipe (17). A rotating column (11) is fixedly installed on the filter chamber (1) through a first limiting block. A support arm (12) is rotatably installed on the rotating column (11). A threaded rod (13) is threaded to the other end of the support arm (12). A sealing cover (3) is rotatably installed at the bottom of the threaded rod (13). A sealing ring (26) is fixedly installed below the sealing cover (3) through several support columns (25). A second sealing ring (37) is fixedly installed at the bottom of the sealing ring (26).

2. The bag filter device for phenylglycine production according to claim 1, characterized in that: A plurality of limiting posts (28) are fixedly installed on the fixed ring (21), and a clamping ring (33) is slidably installed on the plurality of limiting posts (28). A plurality of limiting through holes (36) are opened on the clamping ring (33), and the limiting through holes (36) cooperate with the limiting posts (28). A filter screen cylinder is fixedly installed inside the fixed ring (21), and a filter screen (22) is movably fitted on the outside of the filter screen cylinder. A clamping groove (34) is opened inside the clamping ring (33), and the clamping groove (34) clamps and fixes the sealing skirt (32) of the filter screen (22) by a plurality of bolts (35). The second sealing ring (37) tightly abuts the sealing skirt (32) against the annular rubber ring (39).

3. The bag filter device for phenylglycine production according to claim 2, characterized in that: The filter cylinder includes a connecting ring (30), and two sets of symmetrically distributed arc-shaped limiting blocks (27) are fixed on the inner surface of the sealing ring (26). The two sets of arc-shaped limiting blocks (27) press and fix the connecting ring (30) onto the fixing ring (21). A skeleton (29) is fixedly installed on the lower surface of the connecting ring (30), and two sets of symmetrically distributed handles (31) are fixedly installed on the upper surface of the connecting ring (30).

4. The bag filter device for phenylglycine production according to claim 1, characterized in that: Two sets of mating rods (24) are fixedly installed on the sealing cover (3). The mating rods (24) are slidably connected to the support arm (12). A handwheel (8) is fixedly installed above the threaded rod (13). A limiting rod (7) is fixedly installed on the side surface of the filter chamber (1) through the second limiting block. The limiting rod (7) is located on the front side of the support arm (12).

5. A bag filter device for phenylglycine production according to claim 1, characterized in that: A number of short columns (15) are fixedly installed on the side surface of the filter chamber (1) by a third limiting block. The short columns (15) are evenly distributed on the side of the filter chamber (1). A rotating block (16) is rotatably installed above the short columns (15). The end of the rotating block (16) is provided with a protrusion. The edge of the sealing cover (3) is provided with a groove at the corresponding position.

6. The bag filter device for phenylglycine production according to claim 1, characterized in that: The filter chamber (1) is fixedly connected to the upper side of the feed pipe (9), and the bottom of the filter chamber (1) is fixedly connected to the discharge pipe (6). The other end of the feed pipe (9) and the other end of the discharge pipe (6) are both fixedly installed with connecting flanges (10).

7. A bag filter device for phenylglycine production according to claim 1, characterized in that: Two sets of diaphragm pressure gauges (5) are fixedly installed on the side of the filter chamber (1), and the diaphragm pressure gauges (5) are all located in front of the limiting rod (7).

8. A bag filter device for phenylglycine production according to claim 1, characterized in that: A support ring (2) is fixedly installed on the side surface of the filter chamber (1). Three sets of symmetrically distributed fixing rods (4) are fixedly installed below the support ring (2). A support block (20) is fixedly installed at the bottom of the fixing rod (4).

9. A bag filter device for phenylglycine production according to claim 8, characterized in that: Three sets of symmetrically distributed lifting rings (19) are fixedly installed on the side surface of the support ring (2), and an anti-slip pad is fixedly installed on the lower surface of the support block (20).

10. A bag filter device for phenylglycine production according to claim 1, characterized in that: The upper surface of the filter chamber (1) is fixedly installed with a first sealing ring (14), and the lower surface of the sealing cover (3) is provided with a sealing groove (23), which cooperates with the first sealing ring (14).

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