Quick dismounting device for reverse osmosis membrane shell end cover

Abstract

The utility model belongs to the technical field of reverse osmosis maintenance tools, and particularly relates to a quick dismounting device for an end cover of a reverse osmosis membrane shell. Comprising a sleeve, two butterfly-shaped frames are welded to the two sides of the top end of the sleeve, a handle is hinged between the two butterfly-shaped frames on the same side, an arch-shaped frame penetrates through and is welded to the bottom end of the sleeve, a straight tooth rod is inserted into the sleeve, a plurality of parallel teeth are arranged on the outer wall of the straight tooth rod, a circular ring is fixed to the top end of the straight tooth rod, and an outer thread head is installed at the bottom end of the straight tooth rod. One end of each handle is provided with a plurality of teeth, and two torsion springs are connected between the two handles and the sleeve. The end cover pulling-out device can pull out the end cover under the condition that the inner threads of the central pipe are not damaged, and is convenient to operate, simple in structure and high in working efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of reverse osmosis maintenance tools, and in particular relates to a quick disassembly device for the end cap of a reverse osmosis membrane housing. Background Technology

[0002] Reverse osmosis membrane desalination has become the main process for producing desalinated water in power plants and other industries. This process effectively removes dissolved salts, colloids, microorganisms, and organic matter from water, offering advantages such as high-quality product water, low energy consumption, no pollution, simple process, and easy operation. It is also the optimal process equipment for high-purity water preparation, seawater desalination, and wastewater treatment. During the daily operation and inspection of the reverse osmosis system, operators need to regularly check the internal fouling of the reverse osmosis membrane, adjust reagent dosage, chemical cleaning time, and other data, and perform membrane replacement and offline cleaning on some reverse osmosis sections as needed to extend membrane lifespan. When the product water quality deteriorates, the membrane is damaged, or the pipeline becomes severely scaled, the reverse osmosis membrane needs to be replaced to ensure product water quality.

[0003] When the reverse osmosis membrane element in the reverse osmosis equipment needs to be emptied, cleaned offline, or replaced, the reverse osmosis membrane element needs to be removed from the reverse osmosis membrane housing. Before removing the reverse osmosis membrane element from the reverse osmosis membrane housing, the end cap of the reverse osmosis membrane housing needs to be removed, and then the membrane element inside the housing needs to be taken out for maintenance.

[0004] The existing methods for solving this problem generally involve first removing the plug on the center tube of the end cap sealing plate, then using a special disassembly tool with a screw threaded to the center tube. By turning the nut on the screw, force is applied to the center tube, and as the nut rotates, the center tube pulls the end cap out, separating it from the membrane housing. However, because the O-ring of the end cap sealing plate is in close contact with the membrane housing, especially when water quality is poor and pipe scaling is severe, it can make removing the reverse osmosis membrane end cap difficult. Furthermore, the center tube is made of plastic, and repeated pulling or swinging can easily damage the internal threads. Existing disassembly tools are flimsy and easily deformed; metal jamming on the membrane housing can damage the membrane end face, and the internal threads of the center tube are easily damaged. Additionally, hand-tightening the nut is time-consuming, prone to wobbling, and inefficient. Summary of the Invention

[0005] The purpose of this invention is to provide a quick disassembly device for the end cap of a reverse osmosis membrane housing, so as to solve the problems existing in the prior art.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A quick-release device for the end cap of a reverse osmosis membrane housing includes a sleeve, two butterfly brackets welded to both sides of the top of the sleeve, a handle hinged between the two butterfly brackets on the same side, an arc-shaped bracket welded through the bottom of the sleeve, a straight toothed rod inserted inside the sleeve, the outer wall of the straight toothed rod having several parallel teeth, a ring fixed to the top of the straight toothed rod, an external thread installed at the bottom of the straight toothed rod, several teeth on one end of the handle, and two torsion springs connecting the two handles to the sleeve.

[0008] Furthermore, an elongated hole is provided on the sleeve between the two butterfly frames on the same side of the sleeve. The bow-shaped frame bends and extends to both sides of the sleeve in a bow shape. The two ends of the bow-shaped frame are horizontal. A flexible pad is fixed below the two horizontal ends of the bow-shaped frame. A limiting plate is provided on the inner side of the bow-shaped frame that fixes the flexible pad.

[0009] Furthermore, the butterfly frame has inclined strip holes, one end of which is close to the sleeve and the other end is away from the sleeve. A rotating shaft is connected to both strip holes on the same side of the sleeve.

[0010] Furthermore, the inclination angle of the strip hole is 45 degrees.

[0011] Furthermore, the teeth on the handle are arranged in a semi-circular array, and a round hole is opened at the center of the semi-circular array of teeth on the handle. The teeth pass through the elongated hole, the rotating shaft passes through the round hole, and the handle is hinged between two butterfly frames through the rotating shaft and the elongated hole. The gripping end of the handle is covered with an anti-slip sleeve.

[0012] Furthermore, fixing rods are welded to both sides of the top of the sleeve perpendicular to the butterfly frame, and two torsion springs are respectively connected to the two fixing rods.

[0013] Furthermore, the two ends of the rotating shaft protrude from the butterfly frame and have through holes. The two ends of the torsion spring are respectively inserted into the through holes of the rotating shaft on both sides of the torsion spring. The handle and the sleeve are connected to the torsion spring through the rotating shaft and the fixing rod.

[0014] Furthermore, the parallel teeth are located in the middle and upper part of the straight tooth rod. The parallel teeth are annular, and the two ends of the straight tooth rod are cylindrical. The outer wall of the external thread is threaded. One end of the external thread has a circular groove. The diameter of the straight tooth rod is smaller than the diameter of the circular groove. The straight tooth rod is inserted into the circular groove and fixed by a bolt that passes through the external thread and the straight tooth rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model can pull out the end cap without damaging the internal thread of the central tube, which is convenient to operate, simple in structure and highly efficient.

[0017] 2. The sleeve is moved when the teeth engage with the parallel teeth and when the teeth separate from the parallel teeth. The design is ingenious and can be operated as needed.

[0018] 3. By turning the handle, the rotational force is converted into a linear force through the teeth and parallel teeth, thereby pulling out the end cap.

[0019] 4. The diameter of the circular groove on the external thread is relatively large, so the external thread has a certain amount of room for movement. This allows the external thread to be pulled out even if the end cap is slightly tilted during the pulling process after it is connected to the center tube of the end cap.

[0020] 5. Under the action of the torsion spring, it is always in a disengaged state. Unless an external force is applied, the teeth can be made to mesh with the parallel teeth. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.

[0023] Figure 3 This is a cross-sectional view of the sleeve at the connection between the handle and the straight toothed rod when the pull-out begins.

[0024] Figure 4 This is a schematic diagram of the structure of the sleeve at the connection between the handle and the straight toothed rod at the end of the pulling process of this utility model.

[0025] Figure 5 This is a cross-sectional view of the sleeve at the connection between the handle and the straight tooth bar when the toothed teeth and parallel teeth of this utility model are separated.

[0026] The components are: 1. Sleeve; 2. Butterfly frame; 3. Handle; 4. Bow frame; 5. Straight toothed rod; 6. Parallel tooth; 7. Ring; 8. External thread; 9. Tooth; 10. Torsion spring; 11. Flexible pad; 12. Limiting plate; 13. Strip hole; 14. Rotating shaft; 15. Fixing rod; 16. Through hole; 17. Long strip hole; 18. Anti-slip sleeve. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

[0028] like Figure 1-5As shown, a quick-release device for the end cap of a reverse osmosis membrane housing includes a sleeve 1. Two butterfly frames 2 are welded to both sides of the top end of the sleeve 1. A handle 3 is hinged between the two butterfly frames 2 on the same side. An arc-shaped frame 4 is welded through the bottom end of the sleeve 1. A straight toothed rod 5 is inserted into the sleeve 1. Several parallel teeth 6 are provided on the outer wall of the straight toothed rod 5. A ring 7 is fixed at the top end of the straight toothed rod 5. An external thread 8 is installed at the bottom end of the straight toothed rod 5. Several teeth 9 are provided at one end of the handle 3. Two torsion springs 10 are connected between the two handles 3 and the sleeve 1.

[0029] An elongated hole 17 is provided on the sleeve between the two butterfly frames 2 on the same side of the sleeve, allowing the teeth 9 of the handle 3 to penetrate into the sleeve 1 and engage with the parallel teeth 6. The bow-shaped frame 4 bends and extends towards both sides of the sleeve 1 in an arc shape, with its two ends horizontal, allowing them to abut against the end face of the diaphragm housing. A flexible pad 11 is fixed below the two horizontal ends of the bow-shaped frame 4, separating the bow-shaped frame 4 from the end face of the diaphragm housing and protecting the diaphragm housing. A limiting plate 12 is provided on the inner side of the flexible pad 11 that abuts against the bow-shaped frame 4, locking the limiting plate 12 inside the end face of the diaphragm housing to prevent the straight tooth rod 5 from swinging left and right.

[0030] The butterfly-shaped frame 2 has an inclined strip-shaped hole 13. One end of the strip-shaped hole 13 is close to the sleeve, and the other end is away from the sleeve. A rotating shaft 14 is connected to both strip-shaped holes 13 on the same side of the sleeve. When the rotating shaft 14 is located at the end of the strip-shaped hole 13 close to the sleeve 1, the teeth 9 engage with the parallel teeth 6, thereby performing the pulling operation. When the rotating shaft 14 is located at the end of the strip-shaped hole 13 away from the sleeve 1, the teeth 9 disengage from the parallel teeth 6, facilitating the sliding of the sleeve 1 on the straight toothed rod 5.

[0031] The inclination angle of the strip hole 13 is 45 degrees.

[0032] The teeth 9 on the handle 3 are arranged in a semi-circular array. When the handle 3 is rotated, its rotation axis 14 is the axis of the semi-circular array. After the teeth 9 mesh with the straightedge, they can drive the straight tooth rod 5 to move. The handle 3 has a round hole at the axis of the semi-circular array of teeth 9 for the shaft 14 to pass through. The teeth 9 pass through the elongated hole 17, and the shaft 14 passes through the round hole. The handle 3 is hinged between the two butterfly frames 2 through the shaft 14 and the elongated hole 13. The gripping end of the handle 3 is covered with an anti-slip sleeve 18.

[0033] Fixed rods 15 are welded to both sides of the top of the sleeve that are perpendicular to the butterfly frame 2, and two torsion springs 10 are respectively connected to the two fixed rods 15.

[0034] The rotating shaft 14 protrudes from both ends of the butterfly frame 2 and has through holes 16. The two ends of the torsion spring 10 are respectively inserted into the through holes 16 of the rotating shaft 14 on both sides of the torsion spring 10. The handle 3 and the sleeve 1 are connected by the torsion spring 10 through the rotating shaft 14 and the fixing rod 15. Under the action of the torsion spring 10, the rotating shaft 14 is positioned at the end of the strip hole 13 away from the sleeve 1. That is, the tooth 9 and the parallel tooth 6 are always separated under the action of the torsion spring 10. Unless an external force is applied, the tooth 9 and the parallel tooth 6 can be made to mesh.

[0035] The parallel tooth 6 is located in the upper middle position of the straight tooth 5. The parallel tooth 6 is annular, and the two ends of the straight tooth 5 are cylindrical. The outer wall of the external thread 8 is threaded, and one end of the external thread 8 has a circular groove. The diameter of the straight tooth 5 is smaller than the diameter of the circular groove, while the diameter of the circular groove on the external thread 8 is larger. Therefore, the external thread 8 has a certain amount of movement, which allows it to be pulled out even if the end cap is slightly tilted during the pulling process after the external thread 8 is connected to the center tube of the end cap. The straight tooth 5 is inserted into the circular groove and fixed by bolts that pass through the external thread 8 and the straight tooth 5.

[0036] The working principle of this utility model is as follows:

[0037] In use, remove the plug on the center tube of the sealing plate of the reverse osmosis membrane module housing end cap, place the bow-shaped frame 4 on the end face of the membrane housing, with the two limiting plates 12 clamped inside the end face of the membrane housing and the flexible pad 11 abutting against the end face of the membrane housing. Twist the ring 7 to connect the external thread 8 to the center tube of the sealing plate. When starting to pull out, turn the handle 3 to face the side closer to the ring 7 and make the teeth 9 mesh with the parallel teeth 6, that is, the rotating shaft 14 is at the end of the strip hole 13 near the sleeve. Then turn the handle 3 to face the side closer to the external thread 8. At this time, the meshing of the teeth 9 and the parallel teeth 6 causes the straight tooth rod 5 to move outward and causes the center tube of the sealing plate to move the end cap. At this time, the pulling out ends. Move the rotating shaft 14 to the side away from the sleeve, and the teeth 9 and the parallel teeth 6 separate. Turn the handle 3 again to face the side closer to the ring 7 to perform a new round of pulling out operation. Repeat this until the end cap is pulled out.

[0038] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.

[0039] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A reverse osmosis membrane housing end cap quick release device characterized by, The utility model provides a kind of pipe wrench, including sleeve, two butterfly frames are welded on the top end of sleeve, handle is hinged between two butterfly frames of same side, arc frame is welded through and penetrated in the bottom end of sleeve, straight toothed pole is inserted in sleeve, a plurality of parallel teeth are equipped on the outer wall of straight toothed pole, circular ring is fixed on the top end of straight toothed pole, outer thread head is installed at the bottom end of straight toothed pole, a plurality of teeth are equipped at one end of handle, two torsional springs are connected between handle and sleeve.

2. The reverse osmosis membrane housing end cap quick release device of claim 1, wherein, The butterfly frame is provided with an inclined strip hole, one end of the strip hole is close to the sleeve, and the other end of the strip hole is away from the sleeve, and the two strip holes on the same side of the sleeve are jointly penetrated by a rotating shaft.

3. The reverse osmosis membrane housing end cap quick release device of claim 2, wherein, The inclination angle of the strip hole is 45 degrees.

4. The reverse osmosis membrane housing end cap quick release device of claim 2, wherein, The teeth on the handle are arranged in a semicircular array, and a circular hole is formed at the axis of the semicircular array of teeth on the handle, the teeth pass through the long hole, the rotating shaft passes through the circular hole, the handle is hinged between the two butterfly frames through the rotating shaft and the strip hole, and a non-slip sleeve is provided on the holding end of the handle.

5. The reverse osmosis membrane housing end cap quick release device of claim 4, wherein, The top end of the sleeve is welded with a fixed rod on the two sides perpendicular to the butterfly frame, and the two torsional springs are penetrated on the two fixed rods.

6. The reverse osmosis membrane housing end cap quick release device of claim 5, wherein, The two ends of the rotating shaft protruding out of the butterfly frame are provided with perforations, the two ends of the torsional spring are inserted into the perforations of the rotating shaft on both sides, and the handle and the sleeve are connected by the rotating shaft and the fixed rod.

7. The reverse osmosis membrane housing end cap quick release device of claim 1, wherein, The parallel teeth are located on the upper part of the straight toothed pole, the parallel teeth are annular, the two ends of the straight toothed pole are cylindrical, the outer wall of the outer thread head is in the form of external thread, the one end of the outer thread head has a circular groove, the diameter of the straight toothed pole is smaller than the diameter of the circular groove, and the straight toothed pole is inserted into the circular groove and fixed by the bolt penetrating the outer thread head and the straight toothed pole.

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