Formaldehyde steam filter

Abstract

The utility model relates to the technical field of formaldehyde preparation, in particular to a formaldehyde steam filter which comprises a shell, a steam inlet pipe is fixed on one side of the shell, a clean steam outlet pipe is fixed at the bottom of the other side of the shell, a condensation plate is fixed in the shell, an insertion groove is formed in the top of the condensation plate, and the insertion groove is communicated with the steam inlet pipe. An inlet and outlet is formed in one side of the top of the shell, a sealing strip is fixed to the inner wall of the inlet and outlet, a top cover is attached to the top of the sealing strip, a filtering frame attached to the inner wall of the inserting groove is fixed to one side of the bottom of the top cover, and sliding rails are fixed between the inner walls of the two sides of the shell and one side of the condensation plate. According to the utility model, the plurality of filter element nets in the filter frame are used for filtering formaldehyde steam, so that the filtering effect is improved, the effect of conveniently observing the filtering performance of the filter element nets is realized, the filter element nets can be conveniently replaced subsequently, impurities on the condensation plate can be conveniently removed, and the phenomenon of scaling on the condensation plate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde preparation, in particular to a formaldehyde steam filter. Background Art

[0002] Formaldehyde is an important basic raw material for organic chemical industry and is widely used. Methanol oxidation to formaldehyde is the main way to produce formaldehyde in industry. The main methods include methanol air oxidation, hydrocarbon direct oxidation, dimethyl ether catalytic oxidation, and non-catalytic oxidation using liquefied petroleum gas as raw material. In the process of using methanol to prepare formaldehyde, formaldehyde needs to be vaporized before transmission and use, and filtering operation is required during the vaporization.

[0003] At present, in the formaldehyde vapor filtration process, the steam will form a condensation state through the condensation plate inside the filter. When the steam is blown on the surface of the condensation plate for a long time, the impurities in the steam will cause scaling on the condensation plate. Since there is no good cleaning structure in the condenser, the condensation effect will be affected. Utility Model Content

[0004] The utility model aims to provide a formaldehyde steam filter to solve the problem that the condensation effect is affected by scaling of the condensation plate of the existing filter.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A formaldehyde steam filter comprises a shell, a steam inlet pipe is fixed on one side of the shell, and a clean steam outlet pipe is fixed on the bottom of the other side of the shell, a condensation plate is fixed inside the shell, and a slot is opened on the top of the condensation plate, an inlet and an outlet are opened on one side of the top of the shell, and a sealing strip is fixed on the inner wall of the inlet and the outlet, a top cover is attached to the top of the sealing strip, and a filter frame attached to the inner wall of the slot is fixed on one side of the bottom of the top cover, slide rails are fixed between the inner walls of both sides of the shell and one side of the condensation plate, and the bottom of the slide rail is designed to be in an arc shape, connecting rods inserted in the slide rails are fixed at both ends of one side of the bottom of the top cover, the bottom of the connecting rod is rotatably connected to a movable rod through a pin shaft, the bottom of the movable rod is a pulley slidably arranged in the slide rail through a pin shaft, and the same cleaning scraper seat is fixedly installed on the bottom of the opposite sides of the two movable rods, and a cleaning scraper head is fixed at one end of the cleaning scraper seat.

[0007] Furthermore, the cleaning scraper head is made of rubber material, and the cross section of the cleaning scraper head is designed to be triangular.

[0008] Furthermore, the inner wall of the filter frame is fitted with an equidistantly distributed mesh outer frame, and a filter element mesh is installed on the mesh outer frame. The top and bottom of one side of the filter frame are rotatably connected to a second clamping plate through a fastening pin, and the second clamping plate is fitted on one side of the mesh outer frame.

[0009] Furthermore, an air guide port is provided on a side of the filter frame away from the condensation plate, and an air collecting frame is fixedly installed on one side of the air guide port, and an air guide pipe is fixed on one side of the air collecting frame.

[0010] Furthermore, a detection tube passing through the top cover is fixed on the top of the air guide tube, and a pressure gauge is fixedly installed on the top of the detection tube.

[0011] Furthermore, a through hole is opened on one side of the top of the top cover, and the detection tube passes through the through hole, and a handle is fixed at the middle position of the top of the top cover.

[0012] Furthermore, the top of the shell is rotatably connected to a plurality of first clamping plates via fastening pins, and the first clamping plates are attached to the top surface of the top cover.

[0013] Furthermore, a multi-way pipe is fixed to the bottom of the shell near the cleaning scraper seat, and one passage of the multi-way pipe is connected to a first valve through a flange, the first valve is connected to a sewage pipe, and another passage of the multi-way pipe is connected to a second valve through a flange, and the second valve is connected to a condensate outlet pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, formaldehyde steam is circulated along the steam inlet pipe, the filter frame, the gas collecting frame, the air guide pipe and the clean steam outlet pipe, and a plurality of filter core nets in the filter frame are used to filter the formaldehyde steam to improve the filtering effect, and the pressure of the steam flowing in the air guide pipe after filtering is measured by the detection tube and the barometer. When the pressure of the barometer decreases to a large extent, it means that the filter core net is seriously clogged, so the top cover, the filter frame and the filter core net can be disassembled, so as to achieve the effect of facilitating the observation of the filtering performance of the filter core net and facilitating the subsequent replacement of the filter core net;

[0016] In the utility model, when the top cover is disassembled and assembled, the connecting rod and the pulley are synchronously driven to move in the slide rail as the top cover rises, thereby changing the inclination angles of the movable rod, the cleaning scraper seat and the cleaning scraper head, so that one side of the cleaning scraper head and the cleaning scraper seat is attached to the condensation plate, which is convenient for removing impurities on the condensation plate and avoiding scaling on the condensation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of this application.

[0018] Figure 2 This is a cross-sectional view of the present application.

[0019] Figure 3 It is a schematic diagram of the slide rail and the import and export structure.

[0020] Figure 4 It is a schematic diagram of the connecting rod and the cleaning scraper seat structure.

[0021] Figure 5 It is a schematic diagram of the pulley and cleaning scraper structure.

[0022] Figure 6 This is a cross-sectional view of the filter frame.

[0023] Figure 7 Schematic diagram of the sealing strip and slot structure.

[0024] In the figure: 1. outer shell; 2. steam inlet pipe; 3. drain pipe; 4. condensate outlet pipe; 5. clean steam outlet pipe; 6. first clamping plate; 7. top cover; 8. detection tube; 9. barometer; 10. handle frame; 11. condensation plate; 12. filter frame; 13. air guide pipe; 14. filter element net; 15. inlet and outlet; 16. slide rail; 17. net outer frame; 18. second clamping plate; 19. connecting rod; 20. movable rod; 21. cleaning scraper seat; 22. pulley; 23. cleaning scraper head; 24. air collecting frame; 25. sealing strip; 26. slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 7, a formaldehyde steam filter, comprising a shell 1, a steam inlet pipe 2 is fixed to one side of the shell 1, and a clean steam outlet pipe 5 is fixed to the bottom of the other side of the shell 1, a condensation plate 11 is fixed inside the shell 1, and a slot 26 is opened on the top of the condensation plate 11, an inlet and outlet 15 is opened on one side of the top of the shell 1, and a sealing strip 25 is fixed to the inner wall of the inlet and outlet 15, a top cover 7 is attached to the top of the sealing strip 25, a filter frame 12 attached to the inner wall of the slot 26 is fixed to one side of the bottom of the top cover 7, the inner wall of the filter frame 12 is attached with a net outer frame 17 distributed at an equal distance, and a filter element net 14 is installed on the net outer frame 17, the top and bottom of one side of the filter frame 12 are rotatably connected with a second clamping plate 18 through a fastening pin shaft, and the second clamping plate 18 is attached to one side of the net outer frame 17, an air guide port is opened on the side of the filter frame 12 away from the condensation plate 11, and a gas collecting frame 24 is fixedly installed on one side of the gas guide port, and an air guide pipe 13 is fixed to one side of the gas collecting frame 24, Slide rails 16 are fixed between the inner walls of both sides of the shell 1 and one side of the condensation plate 11, and the bottom of the slide rails 16 is designed to be arc-shaped. Connecting rods 19 inserted into the slide rails 16 are fixed at both ends of one side of the bottom of the top cover 7. The bottom of the connecting rod 19 is rotatably connected to a movable rod 20 through a pin shaft. The bottom of the movable rod 20 is slidably arranged on a pulley 22 in the slide rail 16 through a pin shaft, and the bottom of the opposite sides of the two movable rods 20 is fixedly installed with the same cleaning scraper seat 21. A cleaning scraper head 23 is fixed at one end of the cleaning scraper seat 21. The cleaning scraper head 23 is a scraper head made of rubber material, and the cross-section of the cleaning scraper head 23 is designed to be triangular. As the top cover 7 rises, the connecting rod 19 and the pulley 22 are synchronously driven to move in the slide rail 16 to change the inclination angle of the cleaning scraper head 23, so that the cleaning scraper head 23 and one side of the cleaning scraper seat 21 are attached to the condensation plate 11, which is convenient for removing impurities on the condensation plate 11 and avoiding scaling on the condensation plate 11.

[0027] Specifically, a detection tube 8 passing through the top cover 7 is fixed on the top of the air duct 13, and a pressure gauge 9 is fixedly installed on the top of the detection tube 8. The pressure of the steam flowing in the air duct 13 after filtration is measured by the detection tube 8 and the pressure gauge 9. When the pressure of the pressure gauge 9 decreases significantly, it means that the filter element net 14 is seriously clogged, so that the top cover 7, the filter frame 12 and the filter element net 14 can be disassembled, so as to facilitate the observation of the filtering performance of the filter element net 14 and facilitate the subsequent replacement of the filter element net 14.

[0028] Specifically, a through hole is opened on one side of the top of the top cover 7, and the detection tube 8 passes through the through hole. A handle rack 10 is fixed at the middle position of the top of the top cover 7. The top of the outer shell 1 is rotatably connected to multiple first clamping plates 6 through fastening pins, and the first clamping plates 6 are attached to the top surface of the top cover 7. The clamping action of the first clamping plates 6 ensures that the top cover 7 is fully attached to the sealing strip 25, and the filter frame 12 is fully attached to the slot 26.

[0029] Specifically, a multi-way tube is fixed to the bottom of the outer shell 1 near the cleaning scraper seat 21, and one passage of the multi-way tube is connected to a first valve through a flange, and the first valve is connected to a drain pipe 3, and another passage of the multi-way tube is connected to a second valve through a flange, and the second valve is connected to a condensate outlet pipe 4. The second valve is opened to discharge the condensate through the condensate outlet pipe 4, and the first valve is opened to discharge impurities through the drain pipe 3.

[0030] The working principle of the utility model is as follows: when in use, the user connects the steam inlet pipe 2 and the clean steam outlet pipe 5 to the formaldehyde preparation system, and the formaldehyde steam flows through the steam inlet pipe 2, the filter frame 12, the gas collecting frame 24, the air guide pipe 13 and the clean steam outlet pipe 5 in the entire steam filter. At this time, the multiple filter element nets 14 in the filter frame 12 are used to filter the formaldehyde steam, and the steam flowing in the air guide pipe 13 after filtering is measured by the detection tube 8 and the barometer 9. When the pressure of the barometer 9 decreases to a large extent, it means that the filter element net 14 is seriously blocked. At this time, the filter element net 14 needs to be replaced, and the user needs to adjust the first card plate 6 to turn, separate the first card plate 6 from the top cover 7, and remove the top cover 7 and the filter through the handle 10. The frame 12, the filter element net 14 and other components are taken out from the inlet and outlet 15, and then the second clamping plate 18 is rotated to take out the outer net frame 17 and the filter element net 14 from the filter frame 12, so as to facilitate the observation of the filtering performance of the filter element net 14 and facilitate the subsequent replacement of the filter element net 14. When disassembling and assembling the top cover 7, as the top cover 7 rises, the connecting rod 19 and the pulley 22 are synchronously driven to move in the slide rail 16, and the inclination angle of the movable rod 20, the cleaning scraper seat 21 and the cleaning scraper head 23 is changed, so that one side of the cleaning scraper head 23 and the cleaning scraper seat 21 is attached to the condensation plate 11, thereby scraping off impurities on the condensation plate 11 and avoiding scaling on the condensation plate 11. Finally, the condensate and impurities are discharged through the sewage pipe 3 and the condensate outlet pipe 4 respectively.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A formaldehyde vapor filter, comprising a housing (1), characterized in that: A steam inlet pipe (2) is fixed to one side of the shell (1), and a clean steam outlet pipe (5) is fixed to the bottom of the other side of the shell (1); a condensation plate (11) is fixed inside the shell (1), and a slot (26) is provided on the top of the condensation plate (11); an inlet and outlet (15) is provided on one side of the top of the shell (1), and a sealing strip (25) is fixed to the inner wall of the inlet and outlet (15); a top cover (7) is attached to the top of the sealing strip (25), and a filter frame (12) attached to the inner wall of the slot (26) is fixed to one side of the bottom of the top cover (7); and the inner walls of both sides of the shell (1) are provided with a plurality of sealing strips (25). A slide rail (16) is fixed between one side of the condensation plate (11), and the bottom of the slide rail (16) is designed to be in an arc shape. Connecting rods (19) inserted into the slide rail (16) are fixed at both ends of one side of the bottom of the top cover (7). The bottom of the connecting rod (19) is rotatably connected to a movable rod (20) via a pin shaft. The bottom of the movable rod (20) is slidably arranged on a pulley (22) in the slide rail (16) via a pin shaft. The bottom of the opposite side of the two movable rods (20) is fixedly installed with the same cleaning scraper seat (21), and one end of the cleaning scraper seat (21) is fixed with a cleaning scraper head (23).

2. A formaldehyde vapor filter according to claim 1, characterized in that: The cleaning scraper head (23) is a scraper head made of rubber material, and the cross section of the cleaning scraper head (23) is designed to be triangular.

3. A formaldehyde vapor filter according to claim 2, characterized in that: The inner wall of the filter frame (12) is fitted with a mesh outer frame (17) distributed at equal distances, and a filter element mesh (14) is installed on the mesh outer frame (17). The top and bottom of one side of the filter frame (12) are rotatably connected to a second clamping plate (18) via a fastening pin shaft, and the second clamping plate (18) is fitted on one side of the mesh outer frame (17).

4. A formaldehyde vapor filter according to claim 3, characterized in that: An air guide port is provided on a side of the filter frame (12) away from the condensation plate (11), and an air collecting frame (24) is fixedly mounted on one side of the air guide port, and an air guide pipe (13) is fixed on one side of the air collecting frame (24).

5. A formaldehyde vapor filter according to claim 4, characterized in that: A detection tube (8) passing through the top cover (7) is fixed on the top of the air guide tube (13), and a pressure gauge (9) is fixedly installed on the top of the detection tube (8).

6. A formaldehyde vapor filter according to claim 5, characterized in that: A through hole is provided on one side of the top of the top cover (7), and the detection tube (8) passes through the through hole. A handle frame (10) is fixed at the middle position of the top of the top cover (7).

7. A formaldehyde vapor filter according to claim 6, characterized in that: The top of the housing (1) is rotatably connected to a plurality of first clamping plates (6) via a fastening pin, and the first clamping plates (6) are attached to the top surface of the top cover (7).

8. A formaldehyde vapor filter according to claim 1, characterized in that: A multi-way pipe is fixed to the bottom of the housing (1) near the cleaning scraper seat (21), and one passage of the multi-way pipe is connected to a first valve via a flange, and the first valve is connected to a sewage pipe (3), and another passage of the multi-way pipe is connected to a second valve via a flange, and the second valve is connected to a condensate outlet pipe (4).

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