A bag-type closed filter device

Abstract

The utility model discloses a bag type closed filter device belongs to sealed filter equipment technical field, including filter jar body, be equipped with support plate in the filter jar body, support plate is equipped with mounting hole, is equipped with filter basket to mounting hole, the filter basket surface evenly is equipped with through -hole, be equipped with filter bag in the filter basket, filter bag inboard is equipped with the compression ring, the compression ring is used for fixed filter bag, the compression ring includes lower compression ring and upper compression ring, lower compression ring and filter basket inboard size adaptation, and lower compression ring is located in filter bag inner bottom, and lower compression ring is used for from inboard to prop open filter bag, and be equipped with connecting rod between lower compression ring and upper compression ring, upper compression ring is detachably connected with support plate, and upper compression ring is used for filter bag and filter basket to be pressed tightly in support plate. The utility model designs the combination structure of upper compression ring, connecting rod and lower compression ring, when installing compression ring, can fully unfold filter bag, has saved the tedious step of manual prop open, has promoted the convenience of installation operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of sealed filtration equipment, and specifically relates to a bag-type sealed filtration device. Background Technology

[0002] In industrial production, bag filters are widely used due to their ease of operation and high filtration efficiency. Existing bag filters typically contain a filter basket, inside which filter bags are installed. The top of the filter bags is secured to the top of the basket using a pressure ring.

[0003] Because the filter bag needs to fit snugly against the inner wall of the filter basket to maximize the filtration area, installation requires manual operation to open the filter bag downwards and fit it against the filter basket. However, for some larger filter bags, manual operation is difficult to achieve complete opening. Based on this, we propose a bag-type sealed filtration device. Utility Model Content

[0004] The purpose of this invention is to provide a bag-type sealed filtration device, which aims to solve the problems existing in the prior art mentioned above.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bag-type sealed filtration device includes a filter tank body, a support plate inside the filter tank body, a mounting hole through which a filter basket passes, and through holes evenly distributed on the surface of the filter basket. A filter bag is placed inside the filter basket, and a pressure ring is provided on the inner side of the filter bag. The pressure ring is used to fix the filter bag. The pressure ring includes a lower pressure ring and an upper pressure ring. The lower pressure ring is adapted to the inner size of the filter basket and is located at the bottom inside the filter bag. The lower pressure ring is used to open the filter bag from the inside. A connecting rod is provided between the lower pressure ring and the upper pressure ring. The upper pressure ring is detachably connected to the support plate and is used to press the filter bag and filter basket tightly against the support plate.

[0007] Furthermore, the top surface of the upper pressure ring is provided with a gate-shaped grip rod, and the top surface of the upper pressure ring is provided with an L-shaped limiting rod. The first rod of the limiting rod is perpendicularly connected to the top surface of the upper pressure ring, the second rod of the limiting rod is parallel to the support plate, and its end extends to the top of the support plate. Correspondingly, the support plate is provided with an L-shaped limiting plate. The first side plate of the limiting plate is perpendicularly connected to the top surface of the support plate, the second side plate of the limiting plate is parallel and spaced from the support plate, the bottom surface of the second side plate is inclined, and its low end is connected to the first side plate. The second rod moves into the limiting plate and engages with the bottom surface of the second side plate to limit and fix the pressure ring.

[0008] Furthermore, the second side plate is provided with a groove, and a positioning rod is provided in the groove. The positioning rod is provided with an annular flange, and the upper part of the rod body of the annular flange is provided with a threaded part. The groove is provided with a sliding groove that slides with the annular flange. The threaded part of the positioning rod is provided with a locking nut that is threadedly connected to it. The locking nut abuts against the second side plate to fix the position of the positioning rod on the second side plate.

[0009] Furthermore, the limiting rods are evenly distributed along the circumference of the upper pressure ring, and the number of limiting rods is at least two.

[0010] Furthermore, the filter tank body includes a tank body, a top cover, and a connecting mechanism. The connecting mechanism includes a fixed base disposed on the outside of the tank body, a support column at the top of the fixed base, a support arm rotatably connected to the top of the support column, a handwheel rotatably connected to the top of the support arm, a threaded hole at the center of the handwheel, a threaded column passing through the support arm, the threaded column being threadedly connected to the handwheel through the threaded hole, the bottom of the threaded column being rotatably connected to the top cover, and a locking mechanism being provided between the top cover and the tank body. The locking mechanism is used to lock the top cover and the tank body.

[0011] Compared with the shortcomings and deficiencies of the prior art, the present invention has the following beneficial effects.

[0012] 1. This utility model provides a bag-type sealed filtration device, employing a synergistic combination structure of a filter basket, filter bag, and pressure ring. The filter basket provides stable external support for the filter bag. The pressure ring consists of a lower pressure ring, an upper pressure ring, and a connecting rod. The lower pressure ring is adapted to the inner dimensions of the filter basket and is placed at the bottom of the filter bag. Through the cooperation of the connecting rod and the upper pressure ring, the filter bag can be naturally and fully opened from the inside during installation. Compared with the pressure rings used in existing sealed filter tanks, this device eliminates the need for manual opening of the filter bag after installation. When installing the pressure ring, as the upper pressure ring is lowered, the lower pressure ring moves synchronously down along the inner side of the filter bag. Utilizing its dimensional adaptation with the inner wall of the filter basket, it automatically and evenly opens the filter bag and fits it against the filter basket, ensuring the filter bag is fully expanded, maximizing the filtration area, and eliminating the tedious manual opening step, thus improving the convenience of installation. Simultaneously, the upper pressure ring can tightly press the top of the filter bag against the filter basket and the support plate, further ensuring the stability of the filter bag during the filtration process.

[0013] 2. The second rod of the L-shaped limiting rod and the inclined bottom surface of the second side plate of the L-shaped limiting plate form a wedge-shaped engagement. Rotating the upper pressure ring can fix and loosen the pressure ring. In order to prevent the pressure ring from loosening during use, a positioning rod is designed. The position of the positioning rod is fixed by the locking nut, and the limiting rod is further fixed by the positioning rod.

[0014] 3. To further enhance the stability of the pressure ring under high-pressure filtration conditions, a positioning mechanism is added to this device. A groove is formed in the second side plate, and the positioning rod slides horizontally through a sliding engagement between the annular flange and the groove. After the limiting rod and the limiting plate are engaged, the sliding positioning rod is brought into tight contact with the limiting rod, and then the locking nut on the threaded part secures the positioning rod to the second side plate. This structure effectively restricts the rotational freedom of the limiting rod, preventing the pressure ring from loosening due to vibration during filtration, ensuring the filter bag remains in a stable compressed state, and improving the reliability of this bag-type closed filtration device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of the bag-type sealed filter device of this utility model.

[0016] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0017] Figure 3 This is a schematic diagram of the structure of the upper cover rotating to one side of the tank in this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the support plate with multiple mounting holes in this utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of the support plate of this utility model, which includes a filter basket, a filter bag, and a pressure ring.

[0020] Figure 6 yes Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0021] Figure 7 This is a schematic diagram of the connection structure between the second side plate and the positioning rod in this utility model.

[0022] In the diagram: 110, Tank body; 111, Inlet connector; 112, Outlet connector; 113, Inlet channel; 114, Support plate; 115, Mounting hole; 116, Limiting plate; 1161, First side plate; 1162, Second side plate; 1163, Slide groove; 1164, Groove; 1165, Positioning rod; 1166, Annular flange; 1167, Threaded part; 120, Top cover; 130, Connecting mechanism; 131, Fixing base; 132. Support arm; 133, threaded column; 134, handwheel; 135, support column; 141, connecting seat; 142, threaded rod; 143, connecting ring; 144, pull ring; 145, ear plate; 210, filter basket; 211, through hole; 221, upper pressure ring; 222, handle; 223, limiting rod; 2231, first rod body; 2232, second rod body; 224, lower pressure ring; 225, connecting rod; 230, filter bag; 231, support ring plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Reference Figure 1 This utility model discloses a bag-type sealed filtration device, including a sealed tank body, a filtration mechanism inside the sealed tank body, and the filtration mechanism achieves solid-liquid separation through a filter bag 230.

[0025] Reference Figure 2 The sealed container body includes a container body 110 and a top cover 120. The container body 110 is provided with a connecting mechanism 130, which is used to connect the container body 110 to the top cover 120, facilitating the opening or closing of the top cover 120. The container body 110 has an inlet connector 111 at the top and an outlet connector 112 at the bottom. A support plate 114 is provided inside the container body 110, with an inlet channel 113 between the support plate 114 and the inlet connector 111. The surface of the support plate 114 has mounting holes 115 (see reference). Figure 4 The mounting hole 115 is used to install the filter mechanism. Multiple mounting holes 115 can be provided. In this embodiment, the number of mounting holes 115 is 3.

[0026] The connecting mechanism 130 includes a fixed base 131, a support column 135, and a support arm 132. The fixed base 131 is installed on the upper part of the side wall of the tank 110. The bottom of the support column 135 is vertically connected to the top surface of the fixed base 131, and the top of the support column 135 is rotatably connected to one end of the support arm 132. A handwheel 134 is rotatably connected to the top surface of the support arm 132 near the other end. The handwheel 134 has a threaded hole, and a threaded post 133 passes through the support arm 132. The threaded post 133 is threadedly connected to the threaded hole of the handwheel 134. The bottom end of the threaded post 133 is rotatably connected to the upper cover 120. Rotating the handwheel 134 drives the upper cover 120 to move axially along the threaded post 133. With the cooperation of the support arm 132, the upper cover 120 can be rotated to one side of the tank 110, which facilitates the loading and unloading of the filter bag 230.

[0027] A locking mechanism is provided between the top cover 120 and the tank body 110 (see reference). Figure 2The locking mechanism includes a connecting seat 141 installed on the upper outer side of the tank body 110. The connecting seat 141 is rotatably connected to a threaded rod 142 via a pin. A connecting ring 143 is threaded onto the threaded rod 142, and a pull ring 144 is provided at the top of the connecting ring 143. Ear plates 145 are spaced apart on the outer side of the cover 120 near the tank body 110, with the spacing between the ear plates 145 slightly larger than the diameter of the threaded rod 142. The pull ring 144 drives the threaded rod 142 to flip and pass between the ear plates 145 on both sides, and drives the connecting ring 143 to rotate, so that the bottom of the connecting ring 143 abuts against the ear plates 145 on both sides. Multiple connecting seats 141 are evenly distributed along the axial direction of the tank body 110 to achieve a stable and sealed connection between the cover 120 and the tank body 110. In this embodiment, there are 6 connecting seats 141.

[0028] Reference Figure 3 and Figure 4 The filtration mechanism includes a filter basket 210, a filter bag 230, and a pressure ring. The filter basket 210 passes through the mounting hole 115 of the support plate 114, and an annular support flange is provided inside the mounting hole 115 (see reference). Figure 5 and Figure 6 The filter basket 210 has a cylindrical structure with an open top. Its surface is evenly distributed with through holes 211. The outer side of the top edge of the filter basket 210 is provided with an annular mounting flange. When the filter basket 210 is inserted into the mounting hole 115, the mounting flange abuts against the support flange.

[0029] The overall dimensions of the filter bag 230 are compatible with the filter basket 210, and a support ring plate 231 is provided at the top opening of the filter bag 230 (see reference). Figure 6 The top edge of the support ring plate 231 is provided with an installation flange, and a sealing ring is fitted on the support ring plate 231. The sealing ring is located between the support ring plate 231 and the filter basket 210. The sealing ring is preferably a silicone sealing ring.

[0030] The pressure ring includes an upper pressure ring 221, a connecting rod 225, and a lower pressure ring 224. The size of the lower pressure ring 224 is slightly smaller than the inner size of the filter basket 210. The connecting rod 225 is used to connect the upper pressure ring 221 and the lower pressure ring 224. Multiple connecting rods 225 can be evenly distributed along the circumference of the lower pressure ring 224. The number of connecting rods 225 is at least two. The length of the connecting rod 225 is slightly smaller than the depth of the filter basket 210, so that there is a gap between the lower pressure ring 224 and the bottom of the filter basket 210. The lower pressure ring 224 is used to penetrate into the lower inner part of the filter bag 230, so that the filter bag 230 can be fully unfolded. The upper pressure ring 221 is an annular plate and is parallel to the support plate 114. The outer ring size of the annular plate is adapted to the mounting hole 115. The top surface of the annular plate is provided with a gate-shaped handle 222. The two vertical bars of the gate-shaped handle 222 are vertically connected to the top surface of the annular plate. The connection method can be welding.

[0031] The upper pressure ring 221 is provided with an L-shaped limiting rod 223. The first rod body 2231 of the limiting rod 223 is perpendicularly connected to the top surface of the upper pressure ring 221, and the second rod body 2232 is parallel and spaced apart from the surface of the upper pressure ring 221. The second rod body 2232 is arranged radially along the upper pressure ring 221, and its end extends above the support plate 114. The support plate 114 is provided with an L-shaped limiting plate 116 at a position near the mounting hole 115. The limiting plate 116 and the limiting rod 223 are engaged to fix the upper pressure ring 221. Specifically, the first side plate 1161 of the limiting plate 116 is perpendicularly connected to the surface of the support plate 114, and the connection method can be welding. The second side plate 1162 is parallel and spaced apart from the surface of the support plate 114, and the bottom surface of the second side plate 1162 is inclined (see reference). Figure 7 Its lower end is connected to the first side plate 1161. The upper pressure ring 221 is rotated by the gripping rod 222, thereby driving the second rod 2232 to move and pass into the inner side of the limiting plate 116. The second rod 2232 is engaged and pressed tightly against the bottom surface of the second side plate 1162, thereby realizing that the upper pressure ring 221 presses the filter bag 230 and the filter basket 210 in sequence to ensure that the filtrate entering the tank 110 is fully filtered by the filter bag.

[0032] Multiple limiting rods 223 are evenly distributed around the upper pressure ring 221, with a minimum of two. The positions of the limiting plates 116 correspond to the limiting rods 223, and their number is the same. In this embodiment, there are three limiting rods 223 and three limiting plates 116.

[0033] In one embodiment, refer to Figure 6 and Figure 7 The second side plate 1162 is provided with a positioning mechanism, which includes a positioning rod 1165 that slides with the second side plate 1162. The positioning rod 1165 is provided with an annular flange 1166, and the upper part of the rod body of the annular flange 1166 is provided with a threaded part 1167. Correspondingly, the second side plate 1162 is provided with a groove 1164 that runs vertically through it. The groove 1164 is provided with a sliding groove 1163 that matches the annular flange 1166. The annular flange 1166 of the positioning rod 1165 slides through the sliding groove 1163. The threaded part 1167 of the positioning rod 1165 is threadedly connected to a locking nut. When the limiting rod 223 is engaged with the limiting plate 116, the positioning rod 1165 is slid to contact the limiting rod 223, and the locking nut is rotated to make it abut against the top surface of the second side plate 1162, thereby fixing the position of the limiting rod 223.

[0034] The filter bag installation process for this bag-type closed filtration device:

[0035] Insert the filter basket (210) into the mounting hole (115) of the support plate (114), so that the annular flange (1166) at the top of the filter basket (210) abuts against the support flange inside the mounting hole (115). Place the filter bag (230) into the filter basket (210), ensuring that the support ring plate (231) at the top of the filter bag (230) fits against the top edge of the filter basket (210), and the sealing ring on the support ring plate (231) is located between the support ring plate (231) and the filter basket (210), thus providing a seal.

[0036] Lift the gate-shaped handle (222) of the upper pressure ring (221), and insert the lower pressure ring (224) from the top of the filter bag (230) into the bottom of the inner side of the filter bag (230), so that the lower pressure ring (224) opens the filter bag (230) from the inside; then place the upper pressure ring (221) on the top of the filter basket (210), rotate the upper pressure ring (221), so that the second rod (2232) of the L-shaped limiting rod (223) on the top surface of the upper pressure ring (221) moves into the L-shaped limiting plate (116) on the support plate (114), and the second rod (2232) engages with the inclined bottom surface of the second side plate (1162) of the limiting plate (116), thereby pressing the filter bag (230) and the filter basket (210) tightly against the support plate (114).

[0037] Align the annular flange (1166) of the positioning rod (1165) with the groove (1163) of the second side plate (1162) and insert it. Slide the positioning rod (1165) in the groove (1164) of the second side plate (1162) so that the positioning rod (1165) contacts the limiting rod (223). Rotate the locking nut to fix the positioning rod (1165) on the second side plate (1162) to prevent the limiting rod (223) from loosening.

[0038] Rotate the support arm (132) to cover the upper cover (120) onto the tank body (110). Rotate the handwheel (134) to drive the upper cover (120) down through the threaded column (133) so that the upper cover (120) and the tank body (110) fit tightly together. Then, flip the threaded rod (142) in the locking mechanism and insert it between the ear plates (145) on the outside of the upper cover (120). Rotate the connecting ring (143) through the pull ring (144) so ​​that the bottom of the connecting ring (143) abuts against the ear plate (145) to complete the sealed connection between the upper cover (120) and the tank body (110).

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bag-type sealed filtration device, comprising a filter tank body, wherein a support plate (114) is provided inside the filter tank body, the support plate (114) is provided with mounting holes (115), a filter basket (210) is inserted through the mounting holes (115), through holes (211) are evenly distributed on the surface of the filter basket (210), a filter bag (230) is provided inside the filter basket (210), and a pressure ring is provided on the inner side of the filter bag (230) for fixing the filter bag (230), characterized in that, The pressure ring includes a lower pressure ring (224) and an upper pressure ring (221). The lower pressure ring (224) is adapted to the inner size of the filter basket (210). The lower pressure ring (224) is located at the bottom of the filter bag (230). The lower pressure ring (224) is used to open the filter bag (230) from the inside. A connecting rod (225) is provided between the lower pressure ring (224) and the upper pressure ring (221). The upper pressure ring (221) is detachably connected to the support plate (114). The upper pressure ring (221) is used to press the filter bag (230) and the filter basket (210) tightly against the support plate (114).

2. The bag-type sealed filter device as described in claim 1, characterized in that, The top surface of the upper pressure ring (221) is provided with a gate-shaped handle (222), and an L-shaped limiting rod (223) is provided on the top surface of the upper pressure ring (221). The first rod body (2231) of the limiting rod (223) is perpendicularly connected to the top surface of the upper pressure ring (221), and the second rod body (2232) of the limiting rod (223) is parallel to the support plate (114), with its end extending above the support plate (114). Correspondingly, the support plate (114) is provided with an L-shaped limiting plate (223). 116), the first side plate (1161) of the limiting plate (116) is vertically connected to the top surface of the support plate (114), the second side plate (1162) of the limiting plate (116) is parallel and spaced apart from the support plate (114), the bottom surface of the second side plate (1162) is inclined, and its lower end is connected to the first side plate (1161). The second rod (2232) moves into the limiting plate (116) and engages with the bottom surface of the second side plate (1162) to limit and fix the pressure ring.

3. The bag-type sealed filter device as described in claim 2, characterized in that, The second side plate (1162) is provided with a groove (1164), and a positioning rod (1165) is provided in the groove (1164). The positioning rod (1165) is provided with an annular flange (1166), and the upper part of the annular flange (1166) is provided with a threaded part (1167). The groove (1164) is provided with a sliding groove (1163) that slides with the annular flange (1166). The threaded part (1167) of the positioning rod (1165) is provided with a locking nut that is threadedly connected to it. The locking nut abuts against the second side plate (1162) to fix the position of the positioning rod (1165) on the second side plate (1162).

4. The bag-type sealed filter device as described in claim 2, characterized in that, The limiting rods (223) are evenly distributed along the circumference of the upper pressure ring (221), and the number of limiting rods (223) is at least two.

5. The bag-type sealed filter device as described in claim 1, characterized in that, The filter tank body includes a tank body (110), a top cover (120), and a connecting mechanism (130). The connecting mechanism (130) includes a fixed seat (131) disposed on the outside of the tank body (110). The top of the fixed seat (131) is provided with a support column (135). The top of the support column (135) is provided with a support arm (132) rotatably connected thereto. The top surface of the support arm (132) is provided with a handwheel (134) rotatably connected thereto. The handwheel (134) is provided with a threaded hole in the center. The support arm (132) is provided with a threaded column (133). The threaded column (133) is threadedly connected to the handwheel (134) through the threaded hole. The bottom of the threaded column (133) is rotatably connected to the top cover (120). A locking mechanism is provided between the top cover (120) and the tank body (110). The locking mechanism is used to lock the top cover (120) and the tank body (110).

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