A kettle bottom jacket filter

Abstract

The utility model discloses a kind of kettle bottom jacketed filter, including filter body and heat tracing jacket, the filter body includes filter cartridge, cylinder cover and filter piece;The filter cartridge is equipped with accommodating cavity, the filter piece is arranged in accommodating cavity, and the filter piece separates accommodating cavity into filter front cavity and filter rear cavity, the input end of the filter piece is located filter front cavity, the output end of the filter piece is located filter rear cavity;The input pipeline and output pipeline are connected with filter cartridge respectively;The heat tracing jacket is sleeved on the outer periphery of filter cartridge.The kettle bottom jacketed filter is sleeved on the outer periphery of filter cartridge with heat tracing jacket, and filter cartridge is only partially sleeved with heat tracing jacket, while the upper end and lower end of filter cartridge are exposed from heat tracing jacket, avoid welding seam of filter cartridge to be hidden in heat tracing jacket, can timely find the situation that welding seam leaks, effectively block the pollution of outer jacket medium leakage to product, avoid the problem that product is polluted due to interlayer welding seam rupture in prior art.

Description

Technical Field

[0001] This utility model relates to the field of jacketed filters, and more particularly to a bottom jacketed filter. Background Technology

[0002] In chemical production systems, bottom jacket filters are key equipment for ensuring product quality. Their main function is to effectively filter out impurities from materials, ensuring product purity and production continuity. However, most existing bottom jacket filters use an internal concealed weld structure. Under continuous high temperature and thermal stress cycles, the weld seams are prone to cracking. Because the weld seams are internal, it is difficult to detect cracks in the weld seams in time, leading to heat transfer oil seeping into the filter interior and causing material contamination. When material contamination is detected, a large amount of heat transfer oil has already mixed into the material, making it impossible to pass through and causing production quality accidents. Utility Model Content

[0003] The purpose of this invention is to provide a bottom jacket filter to solve the problem that the bottom jacket filter mentioned above is unable to detect cracks in the cylinder weld in time, which leads to heat transfer oil seeping into the filter and causing material contamination.

[0004] To achieve this objective, the present invention adopts the following technical solution: This utility model provides a bottom jacketed filter, including a filter body and a heat tracing jacket, wherein the filter body includes a filter cylinder, a cylinder cover and a filter element; The filter cartridge has a receiving cavity, and the top of the filter cartridge has a filter cartridge opening communicating with the receiving cavity. The cartridge cover is detachably connected to the filter cartridge opening. The filter element is disposed in the receiving cavity, and the filter element divides the receiving cavity into a pre-filter cavity and a post-filter cavity. The input end of the filter element is located in the pre-filter cavity, and the output end of the filter element is located in the post-filter cavity. An input pipe is provided on one side of the filter cartridge, and an output pipe is provided on the other side of the filter cartridge. The input pipe communicates with the pre-filter cavity, and the output pipe communicates with the post-filter cavity. The heat tracing jacket is fitted around the outer periphery of the filter cylinder; the heat tracing jacket is provided with a hot oil chamber, one side of the heat tracing jacket is provided with an oil supply pipe, and the other side of the heat tracing jacket is provided with an oil outlet pipe, and the hot oil chamber is connected to the oil supply pipe and the oil outlet pipe respectively.

[0005] In the bottom jacketed filter, the filter element is a filter screen cylinder. Multiple filter holes are distributed on the sidewalls and bottom of the filter screen cylinder. A fixing ring is provided on the inner wall of the accommodating cavity. An opening is provided at the upper end of the filter screen cylinder. A fixing flange extends outward from the outer edge of the opening, with the bottom of the fixing flange abutting against the top surface of the fixing ring. The filter screen cylinder and the fixing ring cooperate to divide the accommodating cavity into a pre-filter chamber and a post-filter chamber. The inner wall of the filter screen cylinder is the input end of the filter element, and the outer side of the filter screen cylinder is the output end of the filter element.

[0006] In the bottom jacket filter, the input pipe and the output pipe are coaxially arranged; the fixed convex ring is inclined, with the input pipe located above the lowest point of the fixed convex ring and the output pipe located below the highest point of the fixed convex ring; The filter cylinder opening is inclined, and the inclination angle of the fixed convex edge is adapted to the fixed convex ring.

[0007] In the bottom jacket filter, the filter element also includes a filter screen handle, with both ends of the filter screen handle hinged to a fixed flange.

[0008] In the bottom jacketed filter, the filter cylinder includes a seamless tube body, a pressure flange, and a lower end cap; the filter cylinder opening is located at the top of the seamless tube body, the pressure flange is located at the outer edge of the filter cylinder opening, the lower end cap is located at the bottom of the seamless tube body, the lower end cap is hemispherical, the seamless tube body and the lower end cap cooperate to form a receiving cavity, and the heat tracing jacket is fitted around the outer periphery of the seamless tube body; the input pipe and the output pipe are located in the seamless tube body and above the heat tracing jacket.

[0009] In the bottom jacket filter, the outer edge of the gland flange is provided with multiple mounting notches, which are distributed circumferentially with the central axis of the gland flange as the axis; the cylinder cover is provided with multiple fixing components, the number and position of which are adapted to the number and position of the mounting notches, and the multiple fixing components are distributed circumferentially with the central axis of the cylinder cover as the axis. The fixing assembly includes a fixing bolt, a washer, and a nut. The bottom of the fixing bolt is provided with a clamping block, and the top of the fixing bolt is provided with a thread near its end. The upper end of the fixing bolt passes through the mounting notch, the cylinder cover, and the washer in sequence, and is threadedly connected to the nut, so that the clamping block is tightly pressed against the bottom surface of the gland flange.

[0010] In the bottom jacketed filter, the top of the cylinder cover is provided with a cover handle.

[0011] In the bottom jacketed filter, a pressure gauge is provided on the top of the cylinder cover, and the test end of the pressure gauge passes through the cylinder cover and enters the pre-filter chamber.

[0012] One of the technical solutions of this utility model can have the following beneficial effects: The bottom jacketed filter has a heat tracing jacket fitted around the outer periphery of the filter cylinder. The filter cylinder is only partially fitted with the heat tracing jacket, while the upper and lower ends of the filter cylinder are exposed from the heat tracing jacket. This avoids hiding the weld seam of the filter cylinder inside the heat tracing jacket, and can detect any leakage at the weld seam in a timely manner. It effectively prevents the contamination of the product by the leakage of the outer jacket medium, and fundamentally overcomes the technical problem of product contamination caused by the cracking of the jacket weld seam in the existing technology. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a front view of one embodiment of the present invention; Figure 4 This is a cross-sectional view of one embodiment of the present utility model; In the attached diagram: 1. Filter body; 2. Heat tracing jacket; Filter cylinder 11, cylinder cover 12, filter element 13; hot oil chamber 20; oil delivery pipe 21; oil outlet pipe 22; Pre-filter chamber 101, post-filter chamber 102; input pipe 103; output pipe 104; fixed convex ring 105; seamless pipe body 111, gland flange 112, lower end cap 113; fixing assembly 120, fixing bolt 121, gasket 122, nut 123; clamping block 124; cover handle 125; pressure gauge 126; filter hole 130; fixed convex edge 131; filter screen handle 132; installation notch 1121. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0015] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please refer to Figures 1-4 This utility model provides a bottom jacket filter, including a filter body 1 and a heat tracing jacket 2. The filter body 1 includes a filter cylinder 11, a cylinder cover 12 and a filter element 13. The filter cylinder 11 has a receiving cavity, and the top of the filter cylinder 11 has a filter cylinder opening communicating with the receiving cavity. The cylinder cover 12 is detachably connected to the filter cylinder opening. The filter element 13 is disposed in the receiving cavity, and the filter element 13 divides the receiving cavity into a pre-filter cavity 101 and a post-filter cavity 102. The input end of the filter element 13 is located in the pre-filter cavity 101, and the output end of the filter element 13 is located in the post-filter cavity 102. An input pipe 103 is provided on one side of the filter cylinder 11, and an output pipe 104 is provided on the other side of the filter cylinder 11. The input pipe 103 communicates with the pre-filter cavity 101, and the output pipe 104 communicates with the post-filter cavity 102. The heat tracing jacket 2 is sleeved on the outer periphery of the filter cylinder 11; the heat tracing jacket 2 is provided with a hot oil chamber 20, one side of the heat tracing jacket 2 is provided with an oil supply pipe 21, and the other side of the heat tracing jacket 2 is provided with an oil outlet pipe 22. The hot oil chamber 20 is connected to the oil supply pipe 21 and the oil outlet pipe 22 respectively.

[0019] The bottom jacketed filter has a heat tracing jacket 2 fitted around the outer periphery of the filter cylinder 11. The heat tracing jacket 2 is only partially fitted onto the filter cylinder 11, while the upper and lower ends of the filter cylinder 11 are exposed from the heat tracing jacket 2. This avoids hiding the weld seam of the filter cylinder 11 inside the heat tracing jacket 2, and can detect any leakage at the weld seam in a timely manner. This effectively prevents the leakage of the outer jacket medium from contaminating the product, and fundamentally overcomes the technical problem of product contamination caused by the cracking of the interlayer weld seam in the prior art.

[0020] The oil supply pipe 21 is connected to the output end of the external hot oil heating device, and the oil outlet pipe 22 is connected to the recovery end of the external hot oil heating device. Heat transfer oil is fed into the hot oil chamber 20 through the oil supply pipe 21 and discharged to the external hot oil heating device through the oil outlet pipe 22, where it is reheated. The hot oil chamber 20 is in contact with the outer wall of the filter cylinder 11, achieving the purpose of heating the material in the chamber through heat conduction.

[0021] The material to be filtered enters the pre-filter chamber 101 through the input pipe 103, is filtered by the filter element 13, and then enters the post-filter chamber 102. Subsequently, it is discharged from the output pipe 104, thus achieving the purpose of filtering impurities from the material.

[0022] Specifically, the filter element 13 is a filter cylinder, and multiple filter holes 130 are distributed on the side wall and bottom of the filter cylinder. The inner wall of the accommodating cavity is provided with a fixing protrusion ring 105. The upper end of the filter cylinder is provided with a filter cylinder opening. A fixing protrusion 131 extends outward from the outer edge of the filter cylinder opening. The bottom of the fixing protrusion 131 abuts against the top surface of the fixing protrusion ring 105. The filter cylinder and the fixing protrusion ring 105 cooperate to divide the accommodating cavity into a pre-filtering cavity 101 and a post-filtering cavity 102. The inner wall of the filter cylinder is the input end of the filter element 13, and the outer side of the filter cylinder is the output end of the filter element 13.

[0023] In one specific embodiment of this utility model, the filter element 13 is a filter screen cylinder. The material to be filtered is a liquid, which can pass through the filter holes 130 evenly distributed on the side wall and bottom of the filter screen cylinder and enter the post-filtration chamber 102, while impurities in the material are filtered out by the filter screen cylinder and retained in the filter screen cylinder. The filter screen cylinder is snapped onto the fixing protrusion 105 by a fixing protrusion 131, thereby fixing the filter screen cylinder in the receiving cavity, so that the filter screen can divide the receiving cavity into the pre-filtration chamber 101 and the post-filtration chamber 102.

[0024] When there are too many impurities, they will clog the filter holes 130, causing the filtration efficiency of the bottom jacket filter to decrease. The staff can remove the filter screen and clean it to restore the filtration efficiency and flow rate.

[0025] Specifically, the input pipe 103 and the output pipe 104 are coaxially arranged; the fixed convex ring 105 is inclined, with the input pipe 103 located above the lowest point of the fixed convex ring 105 and the output pipe 104 located below the highest point of the fixed convex ring 105; The filter cylinder opening is inclined, and the inclination angle of the fixed protrusion 131 is adapted to the fixed protrusion 105.

[0026] The horizontal centerline of the input pipe 103 coincides with the horizontal centerline of the output pipe 104. By adopting the above structure, the vertical space is fully utilized, avoiding the laying of multiple complex pipes on the side of the equipment, thereby reducing the floor space and making the layout of the entire filter system very compact. Moreover, the pipe layout is simple and easy to manage and maintain.

[0027] In order to ensure that the input pipe 103 and the output pipe 104 are coaxially arranged and that the material can flow from the pre-filter chamber 101 to the post-filter chamber 102 within the receiving cavity, the fixed convex ring 105 is inclined so that the input pipe 103 is located above the lowest point of the fixed convex ring 105 and the output pipe 104 is located below the highest point of the fixed convex ring 105; the inclination angle of the fixed convex edge 131 is adapted to the fixed convex ring 105 so that the filter element 13 can be installed in the receiving cavity and the receiving cavity is divided into the pre-filter chamber 101 and the post-filter chamber 102.

[0028] Preferably, the filter element 13 further includes a filter handle 132, the two ends of which are respectively hinged to the fixed flange 131.

[0029] With the above structure, the filter handle 132 provides a safe and heat-insulated gripping point, making it easy for staff to remove the filter element 13 from the receiving cavity, which is beneficial for cleaning and maintenance.

[0030] Furthermore, the filter cartridge 11 includes a seamless tube body 111, a pressure flange 112, and a lower end cap 113; the filter cartridge opening is located at the top of the seamless tube body 111, the pressure flange 112 is located at the outer edge of the filter cartridge opening, the lower end cap 113 is located at the bottom of the seamless tube body 111, the lower end cap 113 is hemispherical, the seamless tube body 111 and the lower end cap 113 cooperate to form a receiving cavity, and the heat tracing jacket 2 is sleeved on the outer periphery of the seamless tube body 111; the input pipe 103 and the output pipe 104 are located on the seamless tube body 111 and above the heat tracing jacket 2.

[0031] In a specific embodiment of this utility model, the seamless tube body 111 is a stainless steel seamless tube, which eliminates the potential risk of leakage from the weld seam of the cylinder from the source and ensures the sealing of the accommodating cavity.

[0032] The gland flange 112 and the lower end cap 113 are fixed to the seamless tube body 111 by welding. The lower end cap 113 is hemispherical, allowing for single-sided welding and double-sided forming, resulting in a high-quality, well-formed weld structure, which improves the overall reliability and service life of the filter. Furthermore, the outer edge of the gland flange 112 is provided with a plurality of mounting notches 1121, which are circumferentially spaced about the central axis of the gland flange 112; the cylinder cover 12 is provided with a plurality of fixing components 120121, the number and position of which are adapted to the number and position of the mounting notches 1121, and the plurality of fixing components 120121 are circumferentially spaced about the central axis of the cylinder cover 12. The fixing assembly 120121 includes a fixing bolt 121, a washer 122, and a nut 123. The bottom of the fixing bolt 121 is provided with a clamping block 124, and the top end of the fixing bolt 121 is provided with a thread. The upper end of the fixing bolt 121 passes through the mounting notch 1121, the cylinder cover 12, and the washer 122 in sequence, and is threadedly connected to the nut 123, so that the clamping block 124 is tightly pressed against the bottom surface of the pressure flange 112.

[0033] With the above structure, multiple fixing components 120 and 121 are evenly spaced circumferentially, applying uniform circumferential clamping force to ensure reliable sealing. Furthermore, when the gland flange 112 is fixedly assembled with the cylinder cover 12, the clamping block 124 abuts against the bottom surface of the gland flange 112, while the nut 123 presses against the gasket 122, causing the gasket 122 to abut against the top surface of the gland flange 112. This enhances the connection strength between the gland flange 112 and the cylinder cover 12, enabling the filter body 1 to withstand greater pressure, effectively preventing material leakage, and improving the sealing performance of the containment cavity.

[0034] Preferably, the top of the cylinder cover 12 is provided with a cover handle 125.

[0035] The above structure facilitates the work of staff and greatly makes it easier for maintenance personnel to carry out daily inspections and maintenance, reducing the time and difficulty required for equipment repair and further improving the operating efficiency of the equipment.

[0036] Optionally, a pressure gauge 126 is provided on the top of the cylinder cover 12, and the test end of the pressure gauge 126 passes through the cylinder cover 12 and enters the pre-filter chamber 101.

[0037] A clean filter screen has low resistance and a small pressure difference when material passes through. However, as impurities clog the filter screen, the flow resistance increases, and a higher inlet pressure is required to maintain the same flow rate, which manifests as an increase in the pressure difference of the pre-filter chamber 101. Severe clogging can cause the pressure in the pre-filter chamber 101 to rise continuously, potentially exceeding the pressure limit of the filter body 1, posing a risk of leakage or even rupture.

[0038] The above structure can provide early warning. Staff can monitor the filtration status and judge the blockage in real time through pressure gauge 126. They can understand the blockage of the filter screen, remove the filter screen cartridge for cleaning in time, and avoid damage to the filter body 1 due to excessive pressure.

[0039] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A bottom jacketed filter, characterized in that, It includes a filter body and a heat tracing jacket, wherein the filter body includes a filter cylinder, a cylinder cover and a filter element; The filter cartridge has a receiving cavity, and the top of the filter cartridge has a filter cartridge opening communicating with the receiving cavity. The cartridge cover is detachably connected to the filter cartridge opening. The filter element is disposed in the receiving cavity, and the filter element divides the receiving cavity into a pre-filter cavity and a post-filter cavity. The input end of the filter element is located in the pre-filter cavity, and the output end of the filter element is located in the post-filter cavity. An input pipe is provided on one side of the filter cartridge, and an output pipe is provided on the other side of the filter cartridge. The input pipe communicates with the pre-filter cavity, and the output pipe communicates with the post-filter cavity. The heat tracing jacket is fitted around the outer periphery of the filter cylinder; the heat tracing jacket is provided with a hot oil chamber, one side of the heat tracing jacket is provided with an oil supply pipe, and the other side of the heat tracing jacket is provided with an oil outlet pipe, and the hot oil chamber is connected to the oil supply pipe and the oil outlet pipe respectively.

2. The bottom jacket filter according to claim 1, characterized in that, The filter element is a filter cylinder, with multiple filter holes distributed on its sidewalls and bottom. The inner wall of the accommodating cavity is provided with a fixing protrusion ring, and the upper end of the filter cylinder is provided with a filter cylinder opening. A fixing protrusion extends outward from the outer edge of the filter cylinder opening, and the bottom of the fixing protrusion ring abuts against the top surface of the fixing protrusion ring. The filter cylinder and the fixing protrusion ring cooperate to divide the accommodating cavity into a pre-filter chamber and a post-filter chamber. The inner wall of the filter cylinder is the input end of the filter element, and the outer side of the filter cylinder is the output end of the filter element.

3. A bottom jacket filter according to claim 2, characterized in that, The input pipe and the output pipe are coaxially arranged; the fixed convex ring is inclined, with the input pipe located above the lowest point of the fixed convex ring and the output pipe located below the highest point of the fixed convex ring; The filter cylinder opening is inclined, and the inclination angle of the fixed convex edge is adapted to the fixed convex ring.

4. A bottom jacket filter according to claim 2, characterized in that, The filter element also includes a filter handle, the two ends of which are respectively hinged to a fixed flange.

5. A bottom jacket filter according to claim 1, characterized in that, The filter cartridge includes a seamless tube body, a gland flange, and a lower end cap; the filter cartridge opening is located at the top of the seamless tube body, the gland flange is located at the outer edge of the filter cartridge opening, the lower end cap is located at the bottom of the seamless tube body, the lower end cap is hemispherical, the seamless tube body and the lower end cap cooperate to form a receiving cavity, and the heat tracing jacket is fitted around the outer periphery of the seamless tube body; the input pipe and the output pipe are located in the seamless tube body and above the heat tracing jacket.

6. A bottom jacket filter according to claim 5, characterized in that, The outer edge of the gland flange is provided with multiple mounting notches, which are distributed circumferentially around the central axis of the gland flange; the cylinder cover is provided with multiple fixing components, the number and position of which are adapted to the number and position of the mounting notches, and the multiple fixing components are distributed circumferentially around the central axis of the cylinder cover. The fixing assembly includes a fixing bolt, a washer, and a nut. The bottom of the fixing bolt is provided with a clamping block, and the top of the fixing bolt is provided with a thread near its end. The upper end of the fixing bolt passes through the mounting notch, the cylinder cover, and the washer in sequence, and is threadedly connected to the nut, so that the clamping block is tightly pressed against the bottom surface of the gland flange.

7. A bottom jacket filter according to claim 1, characterized in that, The top of the cylinder cover is equipped with a handle.

8. A bottom jacket filter according to claim 1, characterized in that, A pressure gauge is provided on the top of the cylinder cover, and the test end of the pressure gauge passes through the cylinder cover and enters the pre-filter chamber.

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