Filter bag

Abstract

The utility model provides a filter bag which comprises a bag body, a cavity is formed in the bag body, at least one feeding pipe is further arranged on the bag body, the first end of the feeding pipe is communicated with the cavity, the second end of the feeding pipe is arranged away from the bag body, a feeding port is formed in the second end of the feeding pipe, and the feeding pipe is used for being communicated with an external material pipe through the feeding port. The feeding pipe is arranged on the bag body, has a certain length and is communicated with the external material pipe, so that the feeding pipe and the external material pipe can be fixed conveniently, good sealing performance after connection is ensured, and the probability of material leakage of the filter bag is reduced.

Description

Technical Field

[0001] This application relates to the manufacturing technology of filter press devices, and more particularly to a filter bag. Background Technology

[0002] A filter press is a mechanical device that effectively separates solid particles from liquid in a suspension by applying external pressure. It is widely used in industries such as mining, chemical, pharmaceutical, metallurgy, food, and environmental protection. A filter press forms a filter chamber by the contact of two opposing filter plates. Specifically, each filter plate has grooves within it, and filter cloth is placed within these grooves. The grooves on the two filter plates are positioned opposite each other, thus forming a filter chamber upon contact. However, after prolonged use, the filter cloth gradually ages due to physical and chemical factors (such as temperature, pressure, and chemical corrosion), resulting in wear, tear, and other defects, affecting filtration efficiency. Furthermore, replacing the filter cloth is relatively difficult.

[0003] To address the aforementioned issues, a solution in the relevant technology provides a filter bag. The filter bag is formed from filter cloth through weaving and other processes, with an inlet and outlet on its surface and an internal cavity for accommodating materials such as peat. Using a filter bag eliminates the need for grooves on the filter plate; during filtration, the filter plate simply rests against both sides of the filter bag. When the filter bag's filtration efficiency decreases, the entire filter bag can be replaced, simplifying the replacement process.

[0004] However, with the solution using the relevant technology, since the inlet is located on the surface of the filter bag, an external feed tube needs to be inserted into the inlet during feeding. It is difficult to fix the feed tube to the inlet, which can easily cause leakage. Utility Model Content

[0005] In order to overcome the above-mentioned defects in related technologies, the purpose of this application is to provide a filter bag that helps to reduce the probability of filter bag leakage.

[0006] This application provides a filter bag, including a bag body with a cavity formed inside. The bag body is also provided with at least one feed pipe. A first end of the feed pipe is connected to the cavity, and a second end of the feed pipe is disposed away from the bag body. A feed inlet is formed at the second end of the feed pipe, and the feed pipe is used to connect to an external feed pipe through the feed inlet.

[0007] In one possible implementation, the bag body is provided with two symmetrically arranged feed pipes, which overlap with the bag body to form an integral unit.

[0008] In one possible implementation, the feed tube includes a feed tube body and a waterproof coating. The two ends of the feed tube body are overlapped to form a single unit. The waterproof coating is disposed on the surface of the feed tube body. Along the radial direction of the feed tube, the sum of the thickness of the waterproof coating and the thickness of the feed tube body is equal everywhere.

[0009] In one possible implementation, a transfer pipe is also included, at least partially located inside the feed pipe, the feed pipe being connected to an external feed pipe via the transfer pipe.

[0010] In one possible implementation, the bag body includes a main body, a top cover, and a hanging ear, with the feed tube disposed on the top cover, and the main body, top cover, and hanging ear forming an integral unit.

[0011] In one possible implementation, the top cover includes a top cover body and a first overlapping edge, the hook is integrally formed with the top cover body, the first overlapping edge is arranged circumferentially along the top cover body, and the top cover body is integrally formed with the bag body through the first overlapping edge.

[0012] In one possible implementation, the top cover includes a top cover body and a first overlapping edge, the first overlapping edge being arranged circumferentially along the top cover body, the ear includes an ear body and a second overlapping edge, the second overlapping edge being located on the side of the ear body facing the body, the second overlapping edge being integrally formed with the first overlapping edge, and the first overlapping edge and the second overlapping edge being integrally formed with the body.

[0013] In one possible implementation, the top cover includes a top cover body and a first overlapping edge, the first overlapping edge being arranged circumferentially along the top cover body, the hook includes a hook body and a second overlapping edge, the second overlapping edge being located on the side of the hook body facing the body, the top cover body being integrally connected to the body through the first overlapping edge, and the hook being integrally connected to the body through the second overlapping edge.

[0014] In one possible implementation, the bag body includes two oppositely arranged sides, and the feed tube is disposed on the sides;

[0015] It also includes loops, which overlap with the bag body to form an integral part.

[0016] In one possible implementation, the feed tube is integral with the bag body;

[0017] It also includes loops, which overlap with the bag body to form an integral part.

[0018] This application provides a filter bag, including a bag body with a cavity inside. At least one inlet pipe is also provided on the bag body. A first end of the inlet pipe is connected to the cavity, and a second end of the inlet pipe is disposed away from the bag body, forming an inlet port. The inlet pipe is used to connect to an external material pipe through the inlet port. By providing an inlet pipe on the bag body, and given the inlet pipe's inherent length, this application facilitates the fixing of the inlet pipe and the external material pipe, ensuring good sealing performance after connection, thereby reducing the probability of filter bag leakage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 An isometric view of a filter bag provided in one embodiment of this application;

[0021] Figure 2 A simplified structural diagram of the feed tube provided in one embodiment of this application;

[0022] Figure 3 A simplified structural diagram of the feed tube provided in another embodiment of this application;

[0023] Figure 4 A simplified structural diagram of the feed tube provided in another embodiment of this application;

[0024] Figure 5 A simplified structural diagram of the feed tube provided in another embodiment of this application;

[0025] Figure 6 This is a partial connection structure diagram of a filter bag provided in an embodiment of this application;

[0026] Figure 7 A partial connection structure diagram of a filter bag provided in another embodiment of this application;

[0027] Figure 8 A partial connection structure diagram of a filter bag provided in another embodiment of this application;

[0028] Figure 9 A simplified structural diagram of a filter bag provided in another embodiment of this application;

[0029] Figure 10 A simplified structural diagram of a filter bag provided in another embodiment of this application.

[0030] Figure label:

[0031] 100-Bag body; 110-Body; 120-Top cover; 121-Top cover body; 122-First overlapping edge; 130-Hook ear; 131-Hook ear body; 132-Second overlapping edge; 140-Discharge port;

[0032] 200 - Feed tube; 210 - Feed tube body; 220 - Waterproof coating; 230 - Warp yarn; 240 - Weft yarn; 250 - Bonded weft yarn;

[0033] 300 - Transfer of control. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0035] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] As described in the background section, in the related technologies, since the inlet is located on the surface of the filter bag, an external feed tube needs to be inserted into the inlet during feeding. It is difficult to fix the feed tube to the inlet, which can easily cause leakage.

[0037] In view of this, the present application aims to provide a filter bag by setting an inlet pipe on the bag body. Since the inlet pipe itself has a certain length, it can be connected to an external material pipe, which can facilitate the fixing between the inlet pipe and the external material pipe, ensure good sealing performance after connection, and reduce the probability of filter bag leakage.

[0038] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can gain a more detailed understanding of the contents of this application.

[0039] Please refer to Figures 1-10This embodiment provides a filter bag, including a bag body 100, which can be woven or sewn from fabric, enabling the filter bag to withstand strong pressure without breaking. Specifically, during manufacturing, a certain length of overlap can be made at the seams of the bag body 100 to improve the strength of the seams and prevent material leakage. The specific material of the bag body 100 can be determined based on needs. A cavity is formed inside the bag body 100, and at least one feed pipe 200 is provided on the bag body 100. The first end of the feed pipe 200 is connected to the cavity, facilitating the injection of materials such as coal slurry into the cavity through the feed pipe 200. The second end of the feed pipe 200 is positioned away from the bag body 100, and an inlet is formed at the second end of the feed pipe 200, which is used to connect to an external material pipe. Exemplarily, the external material pipe can be inserted into the feed pipe 200 and then connected and fixed using fasteners such as pagoda connectors and clamps, thereby ensuring good sealing performance after connection and reducing the probability of material leakage. The bottom of the bag body 100 is provided with a discharge port 140. During filter pressing, the discharge port 140 can be sealed by an external device to prevent material leakage. After filter pressing, the filter cake can be discharged from the bag body 100 through the discharge port 140.

[0040] In this embodiment, by setting an inlet pipe 200 on the bag body 100, since the inlet pipe 200 itself has a certain length, it is easy to fix the inlet pipe 200 and the external material pipe through the inlet pipe 200, ensuring good sealing performance after connection, thereby reducing the probability of filter bag leakage.

[0041] In this embodiment, the feed tube 200 can be integrally formed with the bag body 100 by overlapping. The feed tube 200 can be made of the same material as the bag body 100. During manufacturing, a portion of the feed tube 200 can be extended into the cavity and overlapped with the bag body 100, and then the two are connected as one unit by sewing. Using an overlapping method can increase the strength of the connection between the feed tube 200 and the bag body 100, reducing the probability of leakage due to the connection between the feed tube 200 and the bag body 100. The bag body 100 is provided with two symmetrically arranged feed tubes 200. Exemplarily, the two feed tubes 200 can be... Figure 1 and Figure 9 The two feed pipes 200 are symmetrically arranged on both sides of the bag body 100 in the horizontal direction (that is, the width direction of the bag body 100), so that the material is fed at the same time through the two feed pipes 200, ensuring the uniformity of the feeding.

[0042] Please continue to refer to Figure 2In one possible implementation, the feed tube 200 of this embodiment includes a feed tube body 210 and a waterproof coating 220. The two ends of the feed tube body 210 overlap to form a single unit. After overlapping, the thickness of the overlapped portion of the feed tube body 210 is greater than the thickness of the unoverlapped portion. Therefore, the surface of the feed tube body 210 in this embodiment is also provided with a waterproof coating 220. Along the radial direction of the feed tube 200, the sum of the thickness of the waterproof coating 220 and the thickness of the feed tube body 210 is equal everywhere. That is to say, by providing a waterproof coating 220 on the surface of the feed tube body 210, this embodiment ensures that the thickness of the feed tube 200 is equal at all points, facilitating the connection between the feed tube 200 and external feed tubes and avoiding problems such as material backflow and accumulation in the feed tube 200. For example, the waterproof coating 220 in this embodiment can be made of aliphatic adhesives, soft polyurethane resins, etc. Since the waterproof coating 220 is made of a waterproof material, the feed pipe 200 does not have a filtering function. The material will not form a solid in the feed pipe 200 and will always remain in a liquid state, which helps to reduce the risk of clogging of the feed pipe 200.

[0043] In another possible implementation, the feed tube 200 of this embodiment can also be formed by an integral weaving process. For example... Figure 3 As shown, the feed tube 200 may include multiple warp yarns 230 and multiple weft yarns 240, which are woven together using an integrated weaving process to form a single-layer seamless tubular fabric. This method allows for a more uniform thickness throughout the feed tube 200 without the need for additional materials.

[0044] like Figure 4 As shown, in Figure 3 Based on the embodiment shown, the feed tube 200 can also introduce a weft yarn 250, which increases the wall thickness of the feed tube 200 compared to the above. Figure 3 The proposed solution can further improve the strength of the feed pipe 200 and reduce the chance of material leakage.

[0045] In another possible implementation, such as Figure 5 As shown, this embodiment also includes a transfer pipe 300, at least a portion of which is located within the feed pipe 200. The feed pipe 200 is connected to an external feed pipe via the transfer pipe 300. Exemplarily, the transfer pipe 300 can be a flexible pipe or a metal pipe, such as a water-repellent flexible hose like a polyurethane pipe. The transfer pipe 300 effectively reduces backflow and material accumulation problems in the feed pipe 200.

[0046] Please continue to refer to Figure 1 , Figure 6 , Figure 7 and Figure 8In this embodiment, the bag body 100 may include a main body 110, a top cover 120, and hanging ears 130. The feed pipe 200 is disposed on the top cover 120 and is integrally connected to it. The main body 110, the top cover 120, and the hanging ears 130 form a single unit. Exemplarily, this embodiment may have two hanging ears 130, located on two opposite sides of the bag body 100. Multiple fixing holes may be provided on the hanging ears 130 to facilitate suspending the filter bag onto external equipment through these holes.

[0047] In one possible implementation, such as Figure 6 As shown, the upper cover 120 in this embodiment includes an upper cover body and a first overlapping edge. The hook 130 is integrally formed with the upper cover body, and the first overlapping edge is arranged along the circumference of the upper cover body. Exemplarily, the upper cover body, the first overlapping edge, and the hook 130 can be integrally formed from the same piece of fabric through processes such as cutting and bending. The upper cover body extends into the cavity through the first overlapping edge and overlaps with the body 110 to form an integral unit, thereby making the body 110, the upper cover 120, and the hook 130 an integral unit.

[0048] In another possible implementation, such as Figure 7 As shown, the upper cover 120 of this embodiment includes an upper cover body 121 and a first overlapping edge 122. The first overlapping edge 122 is arranged circumferentially along the upper cover body 121. The hook 130 includes a hook body 131 and a second overlapping edge 132. The second overlapping edge 132 is located on the side of the hook body 131 facing the body 110. Exemplarily, the upper cover body 121, the first overlapping edge 122, the hook body 131, and the second overlapping edge 132 of this embodiment can be integrally formed from the same piece of fabric through processes such as cutting and bending. The second overlapping edge 132 is integrally connected to the first overlapping edge 122 by bending. The first overlapping edge 122 and the second overlapping edge 132 extend into the cavity and overlap with the body 110 to form an integral unit, thereby making the body 110, the upper cover 120, and the hook 130 an integral unit.

[0049] In another possible implementation, such as Figure 8 As shown, the top cover 120 in this embodiment includes a top cover body 121 and a first overlapping edge 122, which is arranged circumferentially along the top cover body 121. The loop 130 includes a loop body 131 and a second overlapping edge 132, which is located on the side of the loop body 131 facing the body 110. In this embodiment, the top cover 120 and the loop 130 can overlap with the body 110 respectively. Specifically, the top cover body 121 extends into the cavity through the first overlapping edge 122 and overlaps with the body 110 to form an integral unit, and the loop 130 extends out of the cavity through the second overlapping edge 132 and overlaps with the bag body 100 to form an integral unit, thereby forming an integral unit with the body 110, the top cover 120, and the loop 130. Compared to Figure 6The solution shown in this embodiment can give the bag body 100 higher strength.

[0050] like Figure 9 As shown, in another embodiment, the bag body 100 of this embodiment includes two oppositely arranged sides, and the feed tube 200 can be arranged on the sides.

[0051] In this embodiment, the bag body 100 can be formed from the same piece of fabric through processes such as bending, cutting, and sewing. The feed tube 200 and the loop 130 can be overlapped with the bag body 100 to form an integral unit. Specifically, part of the feed tube 200 and part of the loop 130 can be overlapped with the bag body 100, and then the three can be connected into one unit through sewing.

[0052] like Figure 10 As shown, in another embodiment, the feed tube 200 and the bag body 100 are integrally formed; for example, the feed tube 200 and the bag body 100 can be integrally formed from the same piece of fabric through processes such as bending, cutting, and sewing.

[0053] The loop 130 can be overlapped with the bag body 100 to form a whole. Specifically, some of the loops 130 can be overlapped with the bag body 100, and then the three can be connected into one piece through sewing.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 application.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] It should be noted that in the description of this application, the terms "first" and "second" are used only for convenience in describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0057] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0058] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A filter bag, characterized in that, The bag includes a bag body with a cavity inside. The bag body is also provided with at least one feed pipe. The first end of the feed pipe is connected to the cavity, and the second end of the feed pipe is disposed away from the bag body. The second end of the feed pipe has a feed inlet, and the feed pipe is used to connect to an external feed pipe through the feed inlet.

2. The filter bag according to claim 1, characterized in that, The bag body is provided with two symmetrically arranged feed pipes, which overlap with the bag body to form an integral unit.

3. The filter bag according to claim 2, characterized in that, The feed tube includes a feed tube body and a waterproof coating. The two ends of the feed tube body are overlapped to form a whole. The waterproof coating is applied to the surface of the feed tube body. Along the radial direction of the feed tube, the sum of the thickness of the waterproof coating and the thickness of the feed tube body is equal everywhere.

4. The filter bag according to claim 2, characterized in that, It also includes a transfer pipe, at least a portion of which is located inside the feed pipe, and the feed pipe is connected to an external feed pipe through the transfer pipe.

5. The filter bag according to any one of claims 1-4, characterized in that, The bag body includes a main body, a top cover, and a hanging ear. The feed tube is disposed on the top cover, and the main body, the top cover, and the hanging ear form an integral unit.

6. The filter bag according to claim 5, characterized in that, The top cover includes a top cover body and a first overlapping edge. The hook is integrally formed with the top cover body. The first overlapping edge is arranged along the circumference of the top cover body. The top cover body is integrally formed with the bag body through the first overlapping edge.

7. The filter bag according to claim 5, characterized in that, The top cover includes a top cover body and a first overlapping edge. The first overlapping edge is arranged circumferentially along the top cover body. The ear includes an ear body and a second overlapping edge. The second overlapping edge is located on the side of the ear body facing the body. The second overlapping edge and the first overlapping edge are integrally formed. The first overlapping edge and the second overlapping edge are integrally formed with the body.

8. The filter bag according to claim 5, characterized in that, The top cover includes a top cover body and a first overlapping edge, the first overlapping edge being arranged circumferentially along the top cover body. The hook includes a hook body and a second overlapping edge, the second overlapping edge being located on the side of the hook body facing the body. The top cover body is integrally connected to the body through the first overlapping edge, and the hook is integrally connected to the body through the second overlapping edge.

9. The filter bag according to any one of claims 1-4, characterized in that, The bag body includes two oppositely arranged sides, and the feed tube is disposed on the side; It also includes loops, which overlap with the bag body to form an integral part.

10. The filter bag according to claim 1, characterized in that, The feed tube is integrally formed with the bag body; It also includes loops, which overlap with the bag body to form an integral part.

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