Screen tray for petrochemical industry

Abstract

The utility model relates to the field of sieve trays, in particular to a sieve tray for petrochemical engineering. The sieve tray comprises a mounting tray, a plurality of first filter assemblies and a plurality of second filter assemblies; the first filtering assembly and the second filtering assembly are secondary filtering assemblies; the mounting disc comprises a mounting ring and a mounting cover, and the mounting cover covers a middle through hole of the mounting ring and is fixedly arranged in a manner of protruding out of the mounting ring; a plurality of circulating holes are further formed in the mounting ring; a plurality of first filtering holes are formed in the side wall of the mounting cover; any one of the first filtering assemblies is arranged on one of the circulating holes in a covering manner; and the second filtering assembly covers the middle through hole of the mounting disc. The first filtering assembly and the second filtering assembly of the sieve tray are two-stage filtering assemblies, multi-stage filtering of fluid is achieved, and the filtering effect and the petroleum quality are improved; the second filtering assembly is detachably connected with the mounting disc, so that the sieve tray filtering device can be quickly disassembled and assembled, the use efficiency of the sieve tray is improved, and the service life of the sieve tray is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sieve tray, especially to a sieve tray for petroleum chemical industry. BACKGROUND

[0002] In the petroleum chemical processing, usually before processing with petroleum, in order to obtain high quality petroleum, avoid particulate matter and other impurities to block the processing equipment, prevent the impurities in the fluid from affecting the processing effect, need to pretreat the petroleum. In the prior art, the sieve tray is commonly used as a device for separating, filtering or screening the fluid or particulate matter in the petroleum chemical production process. The sieve tray is usually fixedly connected or detachably installed in the pipeline, reactor or storage tank of the chemical production equipment, and is used for pretreating the petroleum, filtering, screening and separating the petroleum raw material to obtain the target petroleum product, or pretreating the petroleum processing raw material, intermediate product or finished product.

[0003] The internal filter device of the sieve tray for petroleum chemical industry in the prior art is usually fixedly connected with the sieve tray. When the sieve screen reaches the use limit, it is inconvenient to quickly replace the internal sieve screen. When the internal sieve screen needs to be replaced, the whole sieve tray needs to be taken out and cleaned or replaced, which is time-consuming and laborious, reduces the processing efficiency of the petroleum pretreatment, and the structure of the sieve tray is single, usually single-stage filtering, and the filtering effect of the fluid is poor, so that high quality petroleum cannot be obtained.

[0004] Based on the problems of the prior art, it is urgent to develop a sieve tray for petroleum chemical industry, which has better filtering effect and is more convenient to replace the sieve screen. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a sieve tray for petroleum chemical industry, which solves the problems of the sieve tray for petroleum chemical industry in the prior art, which is inconvenient to quickly replace the internal sieve screen and has poor filtering effect on the fluid.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a sieve tray for petroleum chemical industry, which comprises a mounting disc, a plurality of first filter assemblies and second filter assemblies; the first filter assemblies and the second filter assemblies are two-stage filter assemblies; the mounting disc comprises a mounting ring and a mounting cover, the mounting cover is arranged in the middle through hole of the mounting ring and protrudes from the mounting ring; a plurality of flow-through holes are arranged on the mounting ring; a plurality of first filter holes are arranged on the side wall of the mounting cover; any first filter assembly is arranged on a flow-through hole; the second filter assembly is arranged on the middle through hole of the mounting disc.

[0007] In one specific embodiment, the first filter assembly comprises a primary outer cover filter and a secondary inner filter, the primary outer cover filter is sleeved on the secondary inner filter.

[0008] In one specific embodiment, the second filter assembly is detachably connected with the mounting disc.

[0009] In one more specific embodiment, the secondary inner filter is detachably connected with the primary outer cover filter.

[0010] In one more specific embodiment, the primary outer cover filter is sleeved on the flow-through hole and protrudes from the mounting ring, the end of the primary outer cover filter is provided with a first mounting hole, and the sidewall of the primary outer cover filter is formed with a plurality of second filter holes; the secondary inner filter comprises a filter part and a connecting part, the filter part is formed with a third filter hole, and the connecting part is detachably connected with the end of the primary outer cover filter.

[0011] Further, in one more specific embodiment, the first filter assembly further comprises a first nut, and the connecting part is formed with a thread structure matched with the first nut.

[0012] In one specific embodiment, the second filter assembly comprises a primary filter cover and a secondary filter disc; the primary filter cover is sleeved on the secondary filter disc; and the primary filter cover is detachably connected with the secondary filter disc.

[0013] In one more specific embodiment, the end of the primary filter cover is matched and connected with the end of the mounting cover, and the sidewall of the primary filter cover is formed with a fourth filter hole corresponding to the first filter hole.

[0014] In one more specific embodiment, the primary filter cover is threadedly connected with the secondary filter disc.

[0015] In one more specific embodiment, the end of the mounting cover is formed with a second mounting hole, the end of the primary filter cover is formed with a thread structure matched with the second mounting hole, and the second filter assembly further comprises a second nut matched with the thread structure.

[0016] In one specific embodiment, the sieve disc further comprises a fixing member provided at the end of the mounting cover, and the fixing member is used for fixing the secondary inner filter.

[0017] In one more specific embodiment, the fixing member is formed with a plurality of fixing arms, and the end of any fixing arm is formed with a limiting cylinder used for limiting the shaking of the secondary inner filter.

[0018] The utility model discloses a screen disc for petroleum chemical industry has the following beneficial effects:

[0019] (1) the second filter assembly of the utility model discloses a screen disc and installation disc can be dismantled connection, realize the quick dismounting of screen disc filter device, improve the use efficiency and service life of screen disc, solve the problem of the screen disc for petroleum chemical industry in the prior art, usually inconveniently change the screen inside quickly.

[0020] (2) the first filter assembly and second filter assembly of the utility model discloses a screen disc are two -stage filter assembly, can improve the filtration effect to fluid, improve the filtration effect of screen disc, solve the problem of the filtration effect of the screen disc for petroleum chemical industry in the prior art is not good. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is the three-dimensional structure schematic diagram of the screen disc.

[0022] Fig. 2 It is the three-dimensional structure schematic diagram of the mounting ring of the screen disc.

[0023] Fig. 3 It is the three-dimensional structure schematic diagram of the mounting disc of the screen disc.

[0024] Fig. 4 It is the three-dimensional structure schematic diagram of the first filter assembly of the screen disc.

[0025] Fig. 5 It is the three-dimensional structure schematic diagram of the fixed part of the screen disc application.

[0026] Fig. 6 It is the three-dimensional split structure schematic diagram of the second filter assembly of the screen disc.

[0027] REFERENCE NUMERALS

[0028] 1 installation disc, 101 mounting ring, 102 flow through hole, 103 intermediate through -hole, 104 installation cover, 105 first filter hole, 106 second mounting hole, 2 first filter assembly, 201 primary outer cover filter piece, 202 first mounting hole, 203 second filter hole, 204 connecting portion, 205 two -stage built -in filter piece, 206 third filter hole, 207 first nut, 3 fixed part, 301 fixed ring, 302 fixed arm, 303 limit cylinder, 4 second filter assembly, 401 primary filter cover, 402 internal thread, 403 two -stage filter disc, 404 fourth filter hole, 405 screw structure, 406 second nut. DETAILED DESCRIPTION

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0030] Please see Figs. 1-6 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0031] This utility model discloses a sieve disc for petrochemical applications, such as... Figs. 1-6 As shown, the sieve disc includes a mounting disc 1, several first filter components 2, and second filter components 4; the first filter components 2 and the second filter components 4 are two-stage filter components; the mounting disc 1 includes a mounting ring 101 and a mounting cover 104, the mounting cover 104 is fixedly disposed over the central through hole 103 of the mounting ring 101 and protrudes from the mounting ring 101; the mounting ring 101 is also provided with several flow holes 102; the side wall of the mounting cover 104 is provided with several first filter holes 105; any one of the first filter components 2 is disposed over one of the flow holes 102; the second filter component 4 is disposed over the central through hole 103 of the mounting disc 1. The first filter component 2 and the second filter component 4 of this invention are both two-stage filter components, realizing multi-stage filtration of fluids, improving filtration effect and oil quality.

[0032] In one specific embodiment, such as Fig. 4 As shown, the first filter assembly 2 includes a primary outer filter element 201 and a secondary internal filter element 205, wherein the primary outer filter element 201 is sleeved on the secondary internal filter element 205.

[0033] In one specific embodiment, such as Fig. 4As shown, the second filter assembly 4 is detachably connected with the mounting disc 1. The second filter assembly 4 is detachably connected with the mounting disc 1, so that the screen disc filter device can be quickly disassembled and assembled, the service efficiency and service life of the screen disc are improved, and the problem that the screen disc in the prior art is inconvenient to quickly replace the internal screen is solved.

[0034] In a more specific embodiment, as shown in Fig. 4 As shown, the secondary built-in filter 205 is detachably connected with the primary outer cover filter 201.

[0035] In a more specific embodiment, as shown in Fig. 4 As shown, the primary outer cover filter 201 covers the flow-through hole 102 and protrudes from the mounting ring 101, the end of the primary outer cover filter 201 is provided with a first mounting hole 202, and the sidewall of any primary outer cover filter 201 is formed with a plurality of second filter holes 203; the secondary built-in filter 205 includes a filter part and a connecting part 204, the filter part is formed with a third filter hole 206, and the connecting part 204 is detachably connected with the end of the primary outer cover filter 201. The primary outer cover filter 201 and the secondary built-in filter 205 arranged inside and outside make the fluid flowing through the screen disc flow through the second filter hole 203 and the third filter hole 206 in sequence, so that multi-stage filtration is realized and the filtration effect is improved.

[0036] Further, in a more specific embodiment, as shown in Fig. 4 As shown, the first filter assembly 2 further includes a first nut 207, and the connecting part 204 is formed with a thread structure 405 matched with the first nut 207.

[0037] In different application scenarios, the shape and size of the filter part can be adjusted according to requirements. In a specific embodiment as shown in Fig. 4 In a specific embodiment, as shown in

[0038] In a specific embodiment, as shown in Fig. 6 As shown, the second filter assembly 4 includes a primary filter cover 401 and a secondary filter disc 403; the primary filter cover 401 is used for covering the secondary filter disc 403; and the primary filter cover 401 is detachably connected with the secondary filter disc 403.

[0039] In a more specific embodiment, as shown in Fig. 6As shown in the specific embodiment, the end of the primary filter cover 401 is matched and connected with the end of the mounting cover 104, the sidewall of the primary filter cover 401 is formed with a fourth filter hole 404 which is arranged correspondingly with the first filter hole 105, and the primary filter cover 401 is threadedly connected with the secondary filter disc 403.

[0040] In one specific embodiment as shown in the specific embodiment, the inner wall of the primary filter cover 401 is formed with an inner thread 402, the outer wall of the secondary filter disc 403 is formed with an outer thread which is matched with the inner thread 402, and the secondary filter disc 403 is quickly disassembled by matching or disassembling the thread connection of the inner thread 402 and the outer thread, thereby improving the use efficiency and service life of the sieve disc. Fig. 6 Further, in a more specific embodiment as shown in the specific embodiment, the end of the mounting cover 104 is formed with a second mounting hole 106, and the end of the primary filter cover 401 is formed with a threaded structure 405 which is matched with the second mounting hole 106; the second filter assembly 4 further comprises a second nut 406 which is matched with the threaded structure 405.

[0041] Fig. 6 In a more specific embodiment as shown in the specific embodiment, the sieve disc further comprises a fixing member 3 which is arranged at the end 6 of the mounting cover 104, and the fixing member 3 is used for fixing the secondary built-in filter member 205.

[0042] In a more specific embodiment as shown in the specific embodiment, the sieve disc further comprises a fixing member 3 which is arranged at the end 6 of the mounting cover 104, and the fixing member 3 is used for fixing the secondary built-in filter member 205. Fig. 5 Further, in a more specific embodiment as shown in the specific embodiment, the fixing member 3 is formed with a plurality of fixing arms 302, and the end of any fixing arm 302 is formed with a limiting cylinder 303 which is used for limiting the shaking of the secondary built-in filter member 205.

[0043] Fig. 5 In a more specific embodiment as shown in the specific embodiment, the fixing member 3 further comprises a fixing ring 301 which is used for limiting the shaking of the threaded structure 405.

[0044] In a specific use scenario, in the specific embodiment as shown in the specific embodiment, one end of the fixing arm 302 which is away from the limiting cylinder 303 is fixedly connected with the fixing ring 301, the threaded structure 405 is a threaded column, the fixing ring 301 is sleeved outside the threaded structure 405, the inner diameter of the fixing ring 301 is the same as the diameter of the threaded structure 405, so as to limit the shaking of the threaded structure 405. Further, the end of the threaded structure 405 which is sleeved with the fixing ring 301 is further threadedly connected with the second nut 406, so as to fix the fixing ring 301. Fig. 5 In a more specific embodiment as shown in the specific embodiment, the fixing member 3 further comprises a fixing ring 301 which is used for limiting the shaking of the threaded structure 405.

[0045] Figs. 1-6 In a specific use scenario, in the specific embodiment as shown in the specific embodiment, one end of the fixing arm 302 which is away from the limiting cylinder 303 is fixedly connected with the fixing ring 301, the threaded structure 405 is a threaded column, the fixing ring 301 is sleeved outside the threaded structure 405, the inner diameter of the fixing ring 301 is the same as the diameter of the threaded structure 405, so as to limit the shaking of the threaded structure 405. Further, the end of the threaded structure 405 which is sleeved with the fixing ring 301 is further threadedly connected with the second nut 406, so as to fix the fixing ring 301.

[0046] ​​​It should be noted that, in different application scenarios, the size and shape of the first filter hole 105, the second filter hole 203, the third filter hole 206, the fourth filter hole 404, and the filter structure can all be changed and set according to the grade of the filtered oil. In a specific example... Figs. 1-6 In the illustrated embodiment, the outlines of the first filter hole 105, the second filter hole 203, the third filter hole 206, and the fourth filter hole 404 are rectangular. The dimensions of the first filter hole 105, the second filter hole 203, and the fourth filter hole 404 are 0.1*5cm, the dimensions of the third filter hole 206 are 0.05*3cm, and the filter structure is circular with a diameter of 0.05cm.

[0047] In a specific application, the screen is fixedly or detachably connected to an oil pipeline, and the fluid in the pipeline flows from the side closest to the first filter assembly 2 to the second filter assembly 4. In a specific example... Figs. 1-6 In the illustrated embodiment, during use, a portion of the fluid in the pipe flows sequentially through the second filter hole 203 on the primary outer filter element 201 and the third filter hole 206 on the secondary inner filter element 205, achieving multi-stage filtration; another portion of the fluid in the pipe flows sequentially through the first filter hole 105 on the mounting cover 104, the fourth filter hole 404 on the primary filter cover 401, and the filtration structure on the secondary filter disc 403, achieving multi-stage filtration.

[0048] When the secondary built-in filter element 205 needs to be replaced, in a specific case such as... Figs. 1-6 In the illustrated embodiment, firstly, the first nut 207 and the limiting sleeve 303 that match the connecting part 204 need to be disassembled in sequence, and the connecting part 204 is taken out from the first mounting hole 202, so that the secondary built-in filter 205 is taken out from the primary outer cover filter 201; secondly, after replacing or cleaning the secondary built-in filter 205, the connecting part 204 is passed through the first mounting hole 202, and then the limiting sleeve 303 is sleeved and threaded to the first nut 207 to realize the re-fixation of the secondary built-in filter 205.

[0049] When the primary filter cover 401 needs to be replaced, in a specific case such as... Figs. 1-6 In the illustrated embodiment, firstly, the threaded connection between the second nut 406 and the threaded structure 405 is disassembled, and the threaded structure 405 is removed from the second mounting hole 106, so that the primary filter cover 401 is detached from the screen plate; secondly, after replacing or cleaning the primary filter cover 401, the threaded structure 405 is passed through the second mounting hole 106, and the second nut 406 is threadedly connected to the threaded structure 405, thereby re-fixing the primary filter cover 401.

[0050] When the secondary filter disc 403 needs to be replaced, in a specific embodiment as shown Figs. 1-6 In the embodiment shown, first, the threaded connection between the inner thread 402 of the primary filter cover 401 and the outer wall of the secondary filter disc 403 is disassembled, then the replaced or cleaned secondary filter disc 403 is threaded with the primary filter cover 401 to achieve the re-fixing of the secondary filter disc 403.

[0051] In summary, the second filter assembly 4 is detachably connected with the mounting disc 1, realizing the quick disassembly and assembly of the sieve disc filtering device, improving the use efficiency and service life of the sieve disc, and solving the problem that the sieve disc for petroleum chemical industry in the prior art is usually inconvenient for quick replacement of the internal sieve screen; the first filter assembly 2 and the second filter assembly 4 are both secondary filter assemblies, realizing multi-stage filtration of fluid, and improving the filtering effect and petroleum quality.

[0052] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A sieve tray for use in petrochemical processing, characterized by, The screen disc comprises a mounting disc (1), a plurality of first filter assemblies (2) and second filter assemblies (4); the first filter assemblies (2) and the second filter assemblies (4) are secondary filter assemblies; the mounting disc (1) comprises a mounting ring (101) and a mounting cover (104), the mounting cover (104) is arranged at the middle through hole (103) of the mounting ring (101) and protrudes from the mounting ring (101) and is fixedly arranged; a plurality of flow-through holes (102) are further arranged on the mounting ring (101); a plurality of first filter holes (105) are arranged on the side wall of the mounting cover (104); Any one of the first filter assemblies (2) is arranged on one of the flow-through holes (102); The second filter assembly (4) is arranged on the middle through hole (103) of the mounting disc (1).

2. The screen deck of claim 1, wherein, The first filter assembly (2) comprises a primary outer cover filter piece (201) and a secondary built-in filter piece (205), the primary outer cover filter piece (201) is sleeved on the secondary built-in filter piece (205); And / or, the second filter assembly (4) is detachably connected with the mounting disc (1).

3. The screen deck of claim 2, wherein, The secondary built-in filter piece (205) is detachably connected with the primary outer cover filter piece (201).

4. The screen deck of claim 2, wherein, The primary outer cover filter piece (201) is arranged on the flow-through hole (102) and protrudes from the mounting ring (101), the end of the primary outer cover filter piece (201) is provided with a first mounting hole (202), and a plurality of second filter holes (203) are formed on the side wall of any one of the primary outer cover filter pieces (201); the secondary built-in filter piece (205) comprises a filter part and a connecting part (204), a third filter hole (206) is formed on the filter part, and the connecting part (204) is detachably connected with the end of the primary outer cover filter piece (201).

5. The screen deck of claim 4, wherein, The first filter assembly (2) further comprises a first nut (207), and the connecting part (204) is provided with a thread structure matched with the first nut (207).

6. The screen deck of claim 1, wherein, The second filter assembly (4) comprises a primary filter cover (401) and a secondary filter disc (403); the primary filter cover (401) is arranged on the secondary filter disc (403); and the primary filter cover (401) is detachably connected with the secondary filter disc (403).

7. The screen deck of claim 6, wherein, The end of the primary filter cover (401) is matched and connected with the end of the mounting cover (104), the side wall of the primary filter cover (401) is provided with a fourth filter hole (404) arranged correspondingly with the first filter hole (105); and / or, the primary filter cover (401) is threadedly connected with the secondary filter disc (403).

8. The screen deck of claim 7, wherein, The end of the mounting cover (104) is provided with a second mounting hole (106), the end of the primary filter cover (401) is provided with a thread structure (405) matched with the second mounting hole (106); and the second filter assembly (4) further comprises a second nut (406) matched with the thread structure.

9. The screen deck of claim 2, wherein, The screen disc further comprises a fixing member (3) arranged at the end of the mounting cover (104), and the fixing member (3) is used for fixing the secondary built-in filter member (205).

10. The screen deck of claim 9, wherein, The fixing member (3) is formed with a plurality of fixing arms (302), and the end of any fixing arm (302) is formed with a limiting cylinder (303) for limiting the shaking of the secondary built-in filter member (205).

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