Steam heating tubular filter

Abstract

The utility model discloses a steam heating tubular filter which is characterized in that an annular cavity is formed among the inner side of a sleeve, the inner side of a left flange, the inner side of a right flange and the outer side of a barrel, a steam inlet is formed in the top of the sleeve, and a condensate water outlet is formed in the bottom of the sleeve; the steam inlet and the condensate water outlet are located at the two ends of the sleeve in the length direction respectively, a steam inlet cavity is formed in the upper middle portion of the annular cavity, a heat exchange cavity is formed in the lower middle portion of the annular cavity, a condensate water flowing channel is formed in the bottom of the annular cavity, and heat exchange pieces are arranged in the heat exchange cavity of the sleeve and evenly distributed in the axial direction of the barrel. The whole structure of the filter is simple, the small tubular filter has the steam heating effect, the heating effect is improved through the heat exchange pieces, and the condensate water flowing channel and the inner side of the barrel inclining inwards not only have the effect of rapidly discharging condensate, but also assist hot steam to flow.

Description

Technical Field

[0001] The utility model relates to a filter structure, in particular to a steam heating tube filter. Background Art

[0002] Filters are an essential device for conveying media, typically installed at the inlet of pressure reducing valves, pressure relief valves, constant water level valves, and other equipment. They consist of a cylinder, a stainless steel filter screen, and a sewage discharge section. After the water to be treated passes through the filter screen, impurities are trapped. When cleaning is necessary, simply remove the removable filter cartridge, clean it, and reinstall it, making it extremely easy to use and maintain.

[0003] The filter is usually installed at the inlet or outlet of the pipeline. In the prior art, for example, Chinese utility model patent application number "201520920384.9" discloses a filter. For large filters, a heating jacket is usually provided at the bottom of the filter to heat or insulate the filter. However, for the insulation structure of the filter in a small pipeline, the temperature cannot be adjusted well by only providing an insulation cotton layer. At the same time, it is necessary to solve the problem of faster heat transfer from the heating medium to the filter. Utility Model Content

[0004] The utility model aims to provide a steam heating tubular filter, which has the function of steam heating a small tubular filter and has the advantage of good heating effect.

[0005] The above technical objectives of the present utility model are achieved through the following technical solutions: A steam heating tubular filter, comprising a left flange, a right flange and a cylinder, the left flange and the right flange being respectively arranged at the two ends of the cylinder in the length direction, a liquid outlet being provided in the center of the left flange, and a liquid inlet being provided in the center of the right flange, the cylinder being provided with a filtering structure between the liquid outlet and the liquid inlet, a sleeve being concentrically provided on the outside of the cylinder, the two ends of the sleeve in the length direction being connected to the inner side of the left flange and the inner side of the right flange respectively, an annular cavity being formed between the inner side of the sleeve, the inner side of the left flange, the inner side of the right flange and the outer side of the cylinder, a steam inlet being provided at the top of the sleeve, a condensate outlet being provided at the bottom of the sleeve, the steam inlet and the condensate outlet being respectively located at the two ends of the sleeve in the length direction, the middle and upper part of the annular cavity being a steam inlet cavity, the middle and lower part of the annular cavity being a heat exchange cavity, the bottom of the annular cavity being a condensate flow channel, the sleeve being provided with heat exchange fins in the heat exchange cavity, and the heat exchange fins being evenly distributed along the axial direction of the cylinder.

[0006] Preferably, the steam inlet is arranged at one end of the right flange, the condensate outlet is arranged at one end of the left flange, and the inner side of the sleeve is inclined toward the center in the direction of the right flange.

[0007] By adopting the above technical solution, the condensate flows toward the condensate outlet, which facilitates the discharge of the condensate.

[0008] Preferably, the heat exchange plate includes an arc-shaped segment and a U-shaped segment, the inner side of the U-shaped segment is in contact with the inner wall of the cylinder, the outer side of the U-shaped segment is fitted with the inner wall of the sleeve and an insulating gap is formed, and the arc-shaped segments are respectively arranged at both ends of the length direction of the U-shaped segment.

[0009] By adopting the above technical solution, the U-shaped section cooperates with the side of the cylinder, the arc section increases the contact area with the steam, and at the same time, space for steam flow is left at the top.

[0010] Preferably, an inclusion angle covering the outer side of the cylinder is formed between adjacent arc-shaped segments, and the angle of the inclusion angle is less than 180 degrees.

[0011] By adopting the above technical solution, the heat exchange plate is clamped on the circumferential side wall of the cylinder at an angle less than 180 degrees.

[0012] Preferably, the outer contour of the heat exchange fin along the axial direction of the cylinder is gradually reduced, the bottom of the heat exchange fin is radially recessed inward to form a recessed area, and the condensed water flow channel passes through the adjacent recessed area.

[0013] By adopting the above technical solution, it cooperates with the inner wall of the inclined sleeve.

[0014] Preferably, the condensed water flow channel is formed by a bottom depression of the inner wall of the sleeve, and the condensed water flow channel passes through a condensed water outlet.

[0015] By adopting the above technical solution, a second method for processing the condensed water flow channel is disclosed, and the processing difficulty of the heat exchange plate is simplified.

[0016] Preferably, a positioning welding structure is provided on the outside of the cylinder, and the positioning welding structure includes a mounting groove provided on the outside of the cylinder, the mounting groove extends along the axial direction of the cylinder, a positioning strip is provided in the mounting groove, and the positioning strip has welding positioning grooves evenly distributed along the axial direction of the cylinder, and the welding positioning grooves are clamped with the inner side of the heat exchange plate.

[0017] By adopting the above technical solution, the position of the heat exchange plate is determined, which facilitates positioning during the welding process and avoids changes in the relative positions of the heat exchange plates.

[0018] Preferably, at least one welding positioning groove is provided in the circumferential direction of the cylinder, the longitudinal section of the welding positioning groove is rectangular, the longitudinal section of the bottom of the welding positioning groove is rectangular, and the longitudinal section of the top of the welding positioning groove is arc-shaped.

[0019] Preferably, threaded holes are provided on the outer sides of the left flange and the right flange, and the threaded holes are blind holes. The threaded holes are evenly distributed around the centers of the left flange and the right flange.

[0020] By adopting the above technical solution, the traditional through-hole structure is prevented from affecting the setting of the sleeve.

[0021] Preferably, the sleeve is welded with a single screw-end pipe clamp at the condensate outlet and the steam inlet, and the single screw-end pipe clamp is threadedly connected with a hexagonal head screw plug.

[0022] By adopting the above technical solution, when not in use with heating, the condensate outlet and steam inlet can be blocked by a wire plug without affecting normal use.

[0023] To sum up, during use, since the cylinder of the filter is cylindrical, in order to cover the entire filter, a sleeve is set on the outside of the cylinder, and the two ends of the sleeve in the length direction are welded and closed by left flange and right flange. At the same time, the inner side of the sleeve is composed of a steam inlet chamber, a heat exchange chamber and a condensate flow channel from top to bottom. The steam inlet chamber ensures that the hot steam flows axially and fills the top of the annular cavity. Then the heat exchange plate increases the contact area between the cylinder and the steam. After heat exchange, the steam condenses, and the condensed water flows through the condensate flow channel at the bottom and is discharged out of the filter. The overall structure of the filter is streamlined, so that the small tubular filter can be heated by steam. The heat exchange plate improves the heating effect. The condensate flow channel and the inward-inclined inner side of the cylinder not only play a role in quickly discharging the condensate, but also assist the flow of hot steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of an embodiment. Figure 1 ;

[0025] Figure 2 yes Figure 1 An enlarged schematic diagram of part A is shown;

[0026] Figure 3 This is a schematic structural diagram of the left flange of the embodiment;

[0027] Figure 4 This is a cross-sectional view of an embodiment. Figure 2 ;

[0028] Figure 5 yes Figure 4 The enlarged schematic diagram of part B is shown;

[0029] In the figure, 11, left flange; 12, liquid outlet; 13, right flange; 14, liquid inlet; 15, filter structure; 16, threaded hole; 21, cylinder; 22, sleeve; 23, steam inlet; 24, condensate outlet; 25, single-thread pipe clamp; 26, hexagonal head plug; 31, steam inlet chamber; 32, heat exchange chamber; 33, condensate flow channel; 41, heat exchange fin; 42, arc section; 43, U-shaped section; 44, recessed area; 45, thermal insulation gap; 51, mounting groove; 52, positioning strip; 53, welding positioning groove. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0032] Example:

[0033] like Figures 1 to 5 As shown, a steam heating tubular filter comprises a cylindrical body 21 in the shape of a circular tube, and the left and right ends of the cylindrical body 21 are respectively a left flange 11 and a right flange 13. Figure 3 As shown, threaded holes 16 are provided on the outer sides of the left flange 11 and the right flange 13. The threaded holes 16 are blind holes and are evenly distributed around the centers of the left flange 11 and the right flange 13. A liquid outlet 12 is provided at the center of the left flange 11 on the left side, and a liquid inlet 14 is provided at the center of the right flange 13 on the right side. The left flange 11 and the right flange 13 are both welded to the cylinder 21 to achieve welding and fixation. Figure 1 As shown, the right flange 13 is provided with a filter structure 15 at the position of the liquid inlet 14. The filter structure 15 adopts a filter basket structure, which belongs to the existing technology and has nothing to do with the steam heating structure, so it is not described in detail.

[0034] like Figure 1As shown, a sleeve 22 is concentrically provided on the outside of the cylinder 21, and the two ends of the sleeve 22 in the length direction are welded and fixed to the inner side of the left flange 11 and the inner side of the right flange 13 respectively. A sealed annular cavity is formed between the inner side of the sleeve 22, the inner side of the left flange 11, the inner side of the right flange 13 and the outer side of the cylinder 21. A steam inlet 23 is provided at the top of the sleeve 22, and a condensate outlet 24 is provided at the bottom of the sleeve 22. At the same time, the steam inlet 23 and the condensate outlet 24 are respectively located at the two ends of the length direction of the sleeve 22, the steam inlet 23 is provided at one end of the right flange 13, and the condensate outlet 24 is provided at one end of the left flange 11. Its specific structure is that a single screw pipe clamp 25 is welded at the position of the condensate outlet 24 and the steam inlet 23, which are connected to the steam pipe and the drain pipe through the single screw pipe clamp 25. When not in use, a hexagonal head screw plug 26 is threaded on the single screw pipe clamp 25 for sealing.

[0035] The annular cavity has three functional areas in the height direction, namely the steam inlet cavity 31 in the middle and upper part, the heat exchange cavity 32 in the middle and lower part, and the condensate flow channel 33 at the bottom. It should be known that the inner side of the sleeve 22 structure is inclined, that is, the inner side of the sleeve 22 is inclined toward the center in the direction of the right flange 13.

[0036] The sleeve 22 is provided with heat exchange fins 41 in the heat exchange cavity 32. The heat exchange fins 41 are evenly distributed along the axial direction of the cylinder 21. At the same time, the outer contour of the heat exchange fins 41 along the axial direction of the cylinder 21 is gradually reduced. Figure 2 and Figure 4 As shown, the specific structure of the heat exchanger 41 is that the heat exchanger 41 includes an arc segment 42 and a U-shaped segment 43. The inner side of the U-shaped segment 43 is in contact with the inner wall of the cylinder 21, and the outer side of the U-shaped segment 43 is matched with the inner wall of the sleeve 22 to form an insulating gap 45. The arc segments are respectively arranged at both ends of the length direction of the U-shaped segment 43; in order to prevent the heat exchanger 41 from falling off in the unwelded state, an inclusion angle is formed between adjacent arc segments to cover the outer side of the cylinder 21, and the angle of the inclusion angle is less than 180 degrees.

[0037] At the same time, the condensate flow channel 33 has two settings. In this embodiment, the bottom of the heat exchange plate 41 is radially inwardly recessed to form a recessed area 44, and the condensate flow channel 33 passes through the adjacent recessed area 44, that is, the condensate flow channel 33 is surrounded by the bottom of the recessed area 44 and the bottom of the sleeve 22; or the condensate flow channel 33 is formed by the bottom recess of the inner wall of the sleeve 22 (that is, a groove is opened at the bottom of the inner wall of the sleeve 22), and the condensate flow channel 33 passes through the condensate outlet 24.

[0038] like Figure 2 and Figure 5As shown, in order to facilitate the welding and installation of the heat exchange plate 41, a positioning welding structure is provided on the outside of the cylinder 21, and the positioning welding structure includes a mounting groove 51 provided on the outside of the cylinder 21, and the mounting groove 51 extends along the axial direction of the cylinder 21. A positioning strip 52 is provided in the mounting groove 51, and the positioning strip 52 is evenly distributed with welding positioning grooves 53 along the axial direction of the cylinder 21. The welding positioning groove 53 is clamped with the inner side of the heat exchange plate 41, and at least one welding positioning groove 53 is provided in the circumference of the cylinder 21. The longitudinal cross-section of the welding positioning groove 53 is rectangular, the longitudinal cross-section of the bottom of the welding positioning groove 53 is rectangular, and the longitudinal cross-section of the top of the welding positioning groove 53 is arc-shaped.

[0039] Working principle:

[0040] During use, the inner side of the sleeve 22 is composed of the steam inlet chamber 31, the heat exchange chamber 32 and the condensate flow channel 33 from top to bottom. High-temperature steam is rushed into the steam inlet chamber 31 through the pipe, filling the top of the annular cavity, flowing downward and contacting the heat exchange plate 41. The heat exchange plate 41 transfers heat to the cylinder 21. The heat exchange plate 41 increases the contact area between the cylinder 21 and the steam. After heat exchange, the steam condenses, and the condensed water flows through the condensate flow channel 33 at the bottom and is discharged out of the filter through the condensate outlet 24.

Claims

1. A steam heating tubular filter, comprising a left flange (11), a right flange (13) and a cylinder (21), characterized in that: The left flange (11) and the right flange (13) are respectively arranged at the two ends of the length direction of the cylinder (21); a liquid outlet (12) is arranged at the center of the left flange (11); a liquid inlet (14) is arranged at the center of the right flange (13); a filtering structure (15) is provided between the liquid outlet (12) and the liquid inlet (14) of the cylinder (21); a sleeve (22) is concentrically arranged on the outside of the cylinder (21); the two ends of the sleeve (22) in the length direction are respectively connected to the inner side of the left flange (11) and the inner side of the right flange (13); the inner side of the sleeve (22), the inner side of the left flange (11), and the inner side of the right flange (13) are connected to the inner side of the sleeve (22). An annular cavity is formed between the outer side of the sleeve (21), a steam inlet (23) is provided at the top of the sleeve (22), and a condensate outlet (24) is provided at the bottom of the sleeve (22). The steam inlet (23) and the condensate outlet (24) are respectively located at the two ends of the sleeve (22) in the length direction. The upper and middle parts of the annular cavity are the steam inlet cavity (31), the lower and middle parts of the annular cavity are the heat exchange cavity (32), and the bottom of the annular cavity is the condensate flow channel (33). The sleeve (22) is provided with heat exchange fins (41) in the heat exchange cavity (32), and the heat exchange fins (41) are evenly distributed along the axial direction of the sleeve (21).

2. The steam heating tubular filter according to claim 1, characterized in that: The steam inlet (23) is arranged at one end of the right flange (13), the condensate outlet (24) is arranged at one end of the left flange (11), and the inner side of the sleeve (22) is inclined toward the center in the direction of the right flange (13).

3. The steam heating tubular filter according to claim 1, characterized in that: The heat exchange plate (41) includes an arc section (42) and a U-shaped section (43). The inner side of the U-shaped section (43) is in contact with the inner wall of the cylinder (21). The outer side of the U-shaped section (43) is in contact with the inner wall of the sleeve (22) to form a heat insulation gap (45). The arc sections are respectively arranged at both ends of the length direction of the U-shaped section (43).

4. The steam heating tubular filter according to claim 3, characterized in that: An inclusion angle that covers the outer side of the cylindrical body (21) is formed between adjacent arc-shaped segments, and the angle of the inclusion angle is less than 180 degrees.

5. The steam heating tubular filter according to claim 3, characterized in that: The outer contour of the heat exchange plate (41) along the axial direction of the cylinder (21) is gradually reduced, and the bottom of the heat exchange plate (41) is radially recessed inward to form a recessed area (44), and the condensed water flow channel (33) passes through the adjacent recessed area (44).

6. The steam heating tubular filter according to claim 3, characterized in that: The condensed water flow channel (33) is formed by a bottom depression of the inner wall of the sleeve (22), and the condensed water flow channel (33) passes through the condensed water outlet (24).

7. The steam heating tubular filter according to claim 3, characterized in that: A positioning welding structure is provided on the outer side of the cylinder (21), and the positioning welding structure includes a mounting groove (51) provided on the outer side of the cylinder (21), the mounting groove (51) extends along the axial direction of the cylinder (21), a positioning strip (52) is provided in the mounting groove (51), and the positioning strip (52) has welding positioning grooves (53) evenly distributed along the axial direction of the cylinder (21), and the welding positioning grooves (53) are clamped with the inner side of the heat exchange plate (41).

8. The steam heating tubular filter according to claim 7, characterized in that: At least one welding positioning groove (53) is provided in the circumferential direction of the cylinder (21), the longitudinal section of the welding positioning groove (53) is rectangular, the longitudinal section of the bottom of the welding positioning groove (53) is rectangular, and the longitudinal section of the top of the welding positioning groove (53) is arc-shaped.

9. The steam heating tubular filter according to claim 1, characterized in that: Threaded holes (16) are provided on the outer sides of the left flange (11) and the right flange (13). The threaded holes (16) are blind holes and are evenly distributed around the centers of the left flange (11) and the right flange (13).

10. The steam heating tubular filter according to claim 1, characterized in that: The sleeve (22) is welded with a single screw-end pipe clamp (25) at the positions of the condensate outlet (24) and the steam inlet (23), and the single screw-end pipe clamp (25) is threadedly connected with a hexagonal head screw plug (26).

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