Filter screen replacement tooling for filter press

Abstract

The filter screen replacement tool of the filter machine can improve the efficiency of filter screen replacement. The filter screen replacement tool of the filter machine comprises a support, a fixed rod group used for fixing one end of the filter screen, the fixed rod group is configured to extend along the axial direction of the cylinder body of the filter machine, and the fixed rod group is rotationally connected to the support and can be switched between a rotating position and a locking position. By adopting such a mode, the folding of the filter screen during replacement is reduced or avoided, the flatness of the filter screen is improved, the time consumption of filter screen replacement is shortened, and the efficiency of filter screen replacement is improved.

Description

Technical Field

[0001] This application relates to the field of papermaking equipment and technology, specifically to a filter screen replacement fixture for a filter press. Background Technology

[0002] In the pulping process, filters are crucial for separating fibers from acidic and alkaline filtrates, significantly reducing the burden on wastewater treatment and ensuring stable production and compliance with environmental standards. The condition of the alkaline filter screen directly affects filtration efficiency and production effectiveness, making its replacement critical.

[0003] Currently, the replacement of alkaline filter screens is achieved by spot welding the screens to the cylinder. According to welding process requirements, a designated person must straighten the screen during welding to ensure a tight fit with the cylinder, preventing welding defects such as incomplete welds or missed welds, and ensuring welding quality and stable subsequent use of the filter screen.

[0004] Because it requires the collaboration of multiple people and to ensure that the filter screen is straight and fits properly, the entire welding process takes a long time, resulting in low filter screen replacement efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a filter screen replacement fixture for a filter press, which can improve the efficiency of filter screen replacement.

[0006] To achieve the above objectives, this utility model provides a filter screen replacement fixture for a filter press, comprising: a bracket; a fixing rod assembly for fixing one end of the filter screen, the fixing rod assembly being configured to extend axially along the cylinder of the filter press; the fixing rod assembly being rotatably connected to the bracket and capable of switching between a rotating position and a locking position.

[0007] By adopting this method, the occurrence of filter wrinkles during filter replacement is reduced or avoided, improving the flatness of the filter, shortening the filter replacement time, and increasing the filter replacement efficiency.

[0008] Optionally, the fixing rod assembly includes: a rod body; a pressure plate that presses against the rod body radially, with one end of the filter screen fixed between the pressure plate and the rod body; the rod body having a first connecting hole, and the pressure plate having a third connecting hole; and fasteners that fix the rod body and the pressure plate through the first connecting hole and the second connecting hole.

[0009] Optionally, the cross-section of the rod body is circular, and the pressure plate has an arc-shaped structure.

[0010] Optionally, it also includes: a rubber pad located between the pressure plate and the rod body, the pad having a third connecting hole through which the fastener passes.

[0011] Optionally, the bracket includes: a connecting tube sleeved on the corresponding end of the fixing rod assembly; a first locking member disposed on at least one of the connecting tubes; in the locked position, the first locking member passes through the connecting tube to press against the fixing rod assembly; in the rotated position, the first locking member is away from the fixing rod assembly.

[0012] Optionally, the adapter pipe is provided with a locking hole; the first locking member is located in the locking hole and is threadedly engaged with the locking hole.

[0013] Optionally, at least one of the adapter pipes is further provided with a connecting pipe, the connecting pipe having the support rod built into it; the support rod is perpendicular to or coincides with the extension direction of the fixed rod assembly.

[0014] Optionally, an adjusting member is provided at the end of the support rod away from the fixed rod assembly, and the adjusting member is fixed to the frame of the filter. The adjusting member is provided with a second locking member, and the adjusting member has an adjusting position and a locking position. In the adjusting position, the second locking member is away from the support rod, and the adjusting member can move along the extension direction of the support rod. In the locking position, the second locking member is fixed to the support rod.

[0015] Optionally, one of the adapter pipes is further provided with an adapter seat, wherein the adapter pipe and the adapter seat are integrally formed or separately connected.

[0016] Optionally, the adapter includes a support plate and a rib protruding from the support plate, the top end of the rib extending radially beyond the cylinder, and the adapter pipe disposed at the top end of the rib.

[0017] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0019] Figure 1 This is a schematic diagram of the filter screen replacement fixture of the filter machine in the embodiment of this application;

[0020] Figure 2 for Figure 1 Exploded view;

[0021] Figure 3 This is a schematic diagram of the adapter pipe and adapter seat of the filter screen replacement tool for the filter machine in the embodiments of this application.

[0022] Figure label:

[0023] 10—Bracket; 11—Adapter pipe; 111—Connecting pipe; 112—Adapter seat; 112a—Firming plate; 112b—Support plate; 113a—First locking element; 113b—Lock hole; 12—Support rod; 13—Adjusting element; 20—Fixed rod assembly; 21—Rod body; 21a—First connecting hole; 21b—Mounting hole; 22—Pressure plate; 22a—Second connecting hole; 23—Fastener; 24—Pad; 24a—Third connection. Detailed Implementation

[0024] This utility model provides a filter screen replacement fixture for a filter press, see [link to fixture]. Figure 1 The filter screen replacement fixture for the filter includes a bracket 10 and a fixing rod assembly 20. The bracket 10 is used to fix one end of the filter screen, and the fixing rod assembly 20 is configured to extend axially along the cylinder of the filter. The fixing rod assembly 20 is rotatably connected to the bracket 10 and can be switched between a rotating position and a locking position.

[0025] Specifically, the filter includes a frame and a cylinder disposed inside the frame, with several through holes in the wall of the cylinder. The outer surface of the cylinder is covered with a filter screen that covers the through holes. The outside of the cylinder is used to contain the liquid to be filtered. As the liquid passes through the holes and is discharged inside the filter screen, the fibers are filtered out to the outside of the cylinder. The fibers covering the filter screen are then removed by the combined action of water spray, steam purging, and a scraper.

[0026] In existing technologies, replacing filter screens requires multiple people to collaborate on the welding process: one person operates the spot welding machine, another is responsible for straightening the filter screen, and multiple people work together to complete the entire replacement process. Even with a designated person to straighten the screen, wrinkles are still very likely to appear on the filter screen after welding. The raised parts of these wrinkles are easily scratched by a scraper, leading to filter screen damage. Existing technologies for filter screen replacement are unreliable, costly, and inefficient.

[0027] The filter screen replacement fixture provided in this application includes a bracket 10 for fixing to a frame and a fixing rod assembly 20 rotatably connected to the bracket 10. The fixing rod assembly 20 extends in the same axial direction as the cylinder. One end of the filter screen is fixed to the fixing rod assembly 20, and rotating the fixing rod assembly 20 winds the remaining part of the filter screen onto the fixing rod assembly 20.

[0028] As an optional specific operating method, after welding or fixing the other end of the filter screen to the cylinder in other ways, the fixing rod group 20 is in a rotating position, driving the cylinder to rotate and thus rotating the fixing rod group 20, which can wind a certain length of filter screen onto the cylinder.

[0029] Then, the fixing rod assembly 20 is locked, and the cylinder is rotated further. Under the action of the fixing rod assembly 20, the filter screen is tightened and tightly adhered to the outer surface of the cylinder. At this point, the filter screen that is tightly adhered to the cylinder is welded to the cylinder.

[0030] After completing a section of welding, the fixing rod assembly 20 is returned to the rotating position. The cylinder is then rotated at a certain angle, and the fixing rod assembly 20 is switched to the locking position again, thereby pulling the filter screen taut and tightly adhering it to the cylinder. Welding is then performed again, and this process is repeated. After the filter screen has completely wrapped around the cylinder at least once, the filter screen is separated from the fixing rod assembly 20, and the excess part of the filter screen is removed.

[0031] By adopting this method, the occurrence of filter wrinkles during filter replacement is reduced or avoided, improving the flatness of the filter, shortening the filter replacement time, and increasing the filter replacement efficiency.

[0032] According to some embodiments of this application, see Figure 1 and Figure 2 The fixed rod assembly 20 includes: a rod body 21, a pressure plate 22, and a fastener 23. The pressure plate 22 presses against the rod body 21 radially. One end of the filter screen is fixed between the pressure plate 22 and the rod body 21. The rod body 21 has a first connecting hole 21a, and the pressure plate 22 has a second connecting hole 22a. The fastener 23 fixes the rod body 21 and the pressure plate 22 through the first connecting hole 21a and the second connecting hole 22a.

[0033] Specifically, the rod body 21 serves as the main load-bearing component of the fixed rod assembly 20. The rod body 21 can be made of stainless steel or other metal materials to meet structural strength and corrosion resistance requirements. The cross-section of the rod body 21 can be circular, rectangular, square, etc. The first connecting holes 21a are spaced apart along the extension direction of the rod body 21, and the spacing between two adjacent first connecting holes 21a can be set by those skilled in the art.

[0034] The pressure plate 22 presses radially against the rod body 21. The space between the pressure plate 22 and the rod body 21 is used to accommodate the filter screen. The second connecting hole 22a corresponds one-to-one with the first connecting hole 21a. The fastener 23 passes through the first connecting hole 21a and the threaded second connecting hole 22a to press the rod body 21 and the pressure plate 22 together, so that the filter screen can be clamped between the rod body 21 and the pressure plate 22.

[0035] For ease of operation, the rod body 21 may also have a mounting hole 21b, which is opposite to the first connecting hole 21a. The fastener 23 includes a screw. The screw is inserted through the mounting hole 21b into the threads of the first connecting hole 21a and the second connecting hole 22a and screwed in.

[0036] The end of the screw can be located inside the second connecting hole 22a, thereby avoiding damage to the filter screen wound around the fixing rod assembly 20.

[0037] In this way, the filter screen can be clamped to the fixing rod assembly 20. Of course, other methods of fixing the filter screen can also be used, such as gluing or welding, which can be selected by those skilled in the art.

[0038] As an optional embodiment, the cross-section of the rod body 21 is circular. The pressure plate 22 has an arc-shaped structure.

[0039] Specifically, the circular shape includes perfect circles and ellipses. The curvature of the pressure plate 22 is consistent with the curvature of the rod body 21, so that the pressure plate 22 contacts the surface of the rod body 21, thereby better clamping the filter screen.

[0040] According to some other embodiments of this application, the filter screen replacement fixture of the filter machine further includes: a rubber pad 24 located between the pressure plate 22 and the rod body 21, the pad 24 having a third connecting hole 24a, and the fastener 23 passing through the third connecting hole 24a.

[0041] Specifically, the pad 24 can be made of rubber. The filter screen is located on the side of the pad 24 away from the pressure plate 22. The third connecting hole 24a corresponds one-to-one with the corresponding first connecting hole 21a and second connecting hole 22a. Fasteners 23 fix the rod body 21, pad 24, and pressure plate 22 together. In this way, the pad 24 contacts the filter screen, which can prevent damage to the filter screen. At the same time, the pad 24 is made of flexible material, which can also press the filter screen tightly under the action of the pressure plate 22, thereby improving the fixing strength of the filter screen.

[0042] According to some embodiments of this application, the bracket 10 includes: a connecting pipe 11 and a first locking member 113a, the connecting pipe 11 being sleeved on the corresponding end of the fixing rod assembly 20; the first locking member 113a being disposed on at least one of the connecting pipes 11; in the locked position, the first locking member 113a passes through the connecting pipe 11 to press against the fixing rod assembly 20; in the rotated position, the first locking member 113a is away from the fixing rod assembly 20.

[0043] Specifically, see Figure 1 and Figure 3 The bracket 10 includes an adapter tube 11, which is sleeved on both ends of the fixed rod assembly 20. The first locking member 113a can be provided on any one of the adapter tubes 11 or on both adapter tubes 11. This allows one or both ends of the fixed rod assembly 20 to be locked.

[0044] As an optional embodiment, the adapter tube 11 is provided with a locking hole 113b; the first locking member 113a is located in the locking hole 113b and is threadedly engaged with the locking hole 113b. This allows the fixing rod assembly 20 to be switched between the locked position and the rotating position by rotating the first locking member 113a.

[0045] According to other embodiments of this application, see [link to other embodiments]. Figures 1 to 3 At least one of the adapter pipes 11 is also provided with a connecting pipe 111, and the supporting rod 12 is built into the connecting pipe 111; the supporting rod 12 is perpendicular to or coincides with the extension direction of the fixed rod group 20.

[0046] The support rod 12 is welded inside the connecting pipe 111. Alternatively, the connecting pipe 111 can be radially connected to the adapter pipe 11, with the extension direction of the support rod 12 perpendicular to the extension direction of the fixed rod assembly 20. Or, the connecting pipe 111 can be axially connected to the adapter pipe 11, with the extension direction of the support rod 12 consistent with the extension direction of the fixed rod assembly 20.

[0047] The connecting pipe 111 is fixed to the adapter pipe 11. In this way, the fixing rod group 20 can be supported near the cylinder, improving the adaptability of the filter screen replacement tool of the filter machine.

[0048] According to some other embodiments of this application, see [link to relevant documentation]. Figure 1 An adjusting member 13 is provided at the end of the support rod 12 away from the fixed rod assembly 20. The adjusting member 13 is fixed to the frame of the filter. The adjusting member 13 is provided with a second locking member. The adjusting member 13 has an adjusting position and a locking position. In the adjusting position, the second locking member is away from the support rod 12, and the adjusting member 13 can move along the extension direction of the support rod 12. In the locking position, the second locking member presses against the support rod 12.

[0049] Specifically, the adjusting member 13 is a tubular structure with two openings, and can be sleeved on the support rod 12 and move back and forth along the extension direction of the support rod 12. The adjusting member 13 can be fixed to the frame by bolts or by other means. The cooperation method between the second locking member and the adjusting member 13 can refer to the cooperation method between the first locking member 113a and the adapter tube 11, and will not be described again here.

[0050] By adopting this method, the radial distance between the fixed component and the cylinder can be adjusted, thereby improving the adaptability of the tooling for replacement.

[0051] According to some other embodiments of this application, one of the adapter pipes 11 is further provided with an adapter seat 112, wherein the adapter pipe 11 and the adapter seat 112 are integrally formed or separately connected. The adapter seat 112 is used to directly fix to the frame.

[0052] Specifically, the adapter 112 includes a support plate 112b and a stiffening plate 112a protruding from the support plate 112b, and the adapter pipe 11 is disposed at the top of the stiffening plate 112a.

[0053] The support plate 112b is pressed against the surface of the frame and fixed to the frame, which can be done by means of threaded fixing or the like. A connecting pipe 11 is fixed to the top of the support plate 112b, and a stiffening plate 112a is provided between the connecting pipe 11 and the support plate 112b.

[0054] In this way, when the frame and the cylinder are close together, the adapter 112 can be used to fix the fixing rod assembly 20 to the frame, which improves the flexibility of the filter replacement tool and the frame connection.

[0055] Compared with existing technologies, the advantages of this application are:

[0056] First, it reduces or avoids filter wrinkles during filter replacement, improves filter flatness, shortens filter replacement time, and increases filter replacement efficiency.

[0057] Secondly, the fixed rod assembly 20 can be switched between the locked position and the rotating position by driving the first locking member 113a.

[0058] Third, it can support the fixing rod assembly 20 in a position close to the cylinder, improving the adaptability of the filter screen replacement tool of the filter machine.

[0059] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above description of the implementation methods is only for the purpose of helping to understand the core idea of ​​this utility model. It should be noted that relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0060] The foregoing embodiments are merely illustrative. Those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the scope of the claims. Furthermore, those skilled in the art can combine the embodiments in part or in whole, and all technical solutions derived from such combinations fall within the scope of this patent.

Claims

1. A filter screen replacement fixture for a filter press, characterized in that, include: Frame (10); A fixing rod assembly (20) is used to fix one end of the filter screen. The fixing rod assembly (20) is configured to extend axially along the cylinder of the filter. The fixing rod assembly (20) is rotatably connected to the bracket (10) and can be switched between a rotating position and a locking position.

2. The filter screen replacement fixture for the filter machine according to claim 1, characterized in that, The fixed rod assembly (20) includes: A rod body (21); a pressure plate (22) pressing against the rod body (21) radially, one end of the filter screen being fixed between the pressure plate (22) and the rod body (21); the rod body (21) having a first connecting hole (21a), and the pressure plate (22) having a threaded second connecting hole (22a); Fastener (23) fixes the rod body (21) and the pressure plate (22) through the first connecting hole (21a) and the second connecting hole (22a).

3. The filter screen replacement fixture for the filter machine according to claim 2, characterized in that, The cross-section of the rod body (21) is circular, and the pressure plate (22) has an arc surface structure.

4. The filter screen replacement fixture for the filter machine according to claim 2, characterized in that, Also includes: A rubber pad (24) is located between the pressure plate (22) and the rod body (21). The pad (24) has a third connecting hole (24a), and the fastener (23) passes through the third connecting hole (24a).

5. The filter screen replacement fixture for the filter machine according to any one of claims 1-4, characterized in that, The support (10) includes: The adapter pipe (11) is sleeved on the corresponding end of the fixed rod assembly (20); A first locking element (113a) is disposed on at least one of the aforementioned adapter pipes (11); In the locked position, the first locking member (113a) passes through the adapter tube (11) and presses against the fixing rod assembly (20); in the rotated position, the first locking member (113a) is away from the fixing rod assembly (20).

6. The filter screen replacement fixture for the filter machine according to claim 5, characterized in that, The adapter pipe (11) is provided with a locking hole (113b); the first locking member (113a) is located in the locking hole (113b) and is threadedly engaged with the locking hole (113b).

7. The filter screen replacement fixture for the filter machine according to claim 5, characterized in that, At least one of the adapter pipes (11) is also provided with a connecting pipe (111), which has a built-in support rod (12); the support rod (12) is perpendicular to or coincides with the extension direction of the fixed rod group (20).

8. The filter screen replacement fixture for the filter machine according to claim 7, characterized in that, An adjusting member (13) is also provided at one end of the support rod (12) away from the fixed rod group (20), and the adjusting member (13) is fixed to the frame of the filter. The adjusting member (13) is provided with a second locking member. The adjusting member (13) has an adjusting position and a locking position. In the adjusting position, the second locking member is away from the support rod (12), and the adjusting member (13) can move along the extension direction of the support rod (12). In the locking position, the second locking member is fixed to the support rod (12).

9. The filter screen replacement fixture for the filter machine according to claim 7, characterized in that, One of the adapter pipes (11) is connected to the support rod (12), and the other adapter pipe (11) is provided with an adapter seat (112). The adapter pipe (11) and the adapter seat (112) are integrally formed or separately connected.

10. The filter screen replacement fixture for the filter machine according to claim 9, characterized in that, The adapter (112) includes a support plate (112b) and a stiffening plate (112a) protruding from the support plate (112b), and the adapter pipe (11) is disposed at the top of the stiffening plate (112a).

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