A guide roller with an anti-backflow structure

Abstract

This utility model relates to the field of guide roller technology, specifically a guide roller with an anti-backflow structure. It includes a guide roller body for conveying water, with rotary joints for compensation connected to both the upper and lower ends of the guide roller body. The other end of each rotary joint is connected to a water pipe. Two sets of one-way mechanisms are arranged on the inner wall of the guide roller body near the two sets of rotary joints. Each one-way mechanism includes an externally threaded cylinder threaded onto the inner wall of the guide roller body, and a sealing cylinder for sealing is connected to the inner side wall of the externally threaded cylinder. This guide roller with an anti-backflow structure uses a spring to drive a sealing cone to press against the sealing cylinder, preventing backflow water pressure from passing through. The water pressure entering the guide roller body impacts the sealing cone, causing it to move away from the inner wall of the sealing cylinder, allowing water flow through and preventing backflow. The protective cylinder can be removed and replaced by rotating a bidirectional threaded rod to pull the insert rod out of the slot.

Description

Technical Field

[0001] This utility model relates to the field of guide roller technology, specifically a guide roller with an anti-backflow structure. Background Technology

[0002] Guide rollers are mechanical components mainly used in machines or equipment to guide, support, or adjust the movement of other components. They are commonly found in conveyors, roll processing, printing presses, and other industrial equipment. However, existing guide rollers still have certain defects in use, such as:

[0003] Publication number CN208734943U discloses an anti-backflow structure for a guide roller, comprising a rotary joint, an inner tube of the guide roller, a first sealing ring, a second sealing ring, and an elastic element. The inner tube of the guide roller extends into the second backflow channel of the rotary joint and is fixedly connected to the rotary joint. The water inlet pipe of the rotary joint extends into the inner tube of the guide roller. The first sealing ring is fixed on the inner tube of the guide roller and sleeved on the outside of the water inlet pipe of the rotary joint. One side of the first sealing ring forms a sealing surface. The second sealing ring is movably sleeved on the outside of the water inlet pipe of the rotary joint and located in the second backflow channel of the rotary joint. The second sealing ring is used to seal tightly against the sealing surface to block the gap between the second sealing ring and the inner tube of the rotary joint. The elastic element provides elastic stress to keep the first sealing ring and the sealing surface tightly sealed. This utility model uses the cooperation of the first sealing ring, the second sealing ring, and the elastic element to isolate the inner tube and the second backflow channel, thereby preventing backflow.

[0004] The aforementioned document describes a method where an elastic element is used to drive the first and second sealing rings to abut against each other for sealing. The contact surface is flat. When the backflow water pressure is high, the water flow can easily pass between the first and second sealing rings by relying solely on the thrust of the elastic element. Based on this, a guide roller with an anti-backflow structure is proposed to solve the above problem. Utility Model Content

[0005] The purpose of this invention is to provide a guide roller with an anti-backflow structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a guide roller with an anti-backflow structure, comprising a guide roller body for conveying, wherein the upper end and the lower end of the guide roller body are connected to a rotary joint for compensation, and the other end of the rotary joint is connected to a pipe for water conveyance, and two sets of one-way mechanisms are provided on the inner wall of the guide roller body near the two sets of rotary joints.

[0007] The unidirectional mechanism includes an externally threaded cylinder threaded to the inner wall of the guide roller body, a sealing cylinder for sealing connected to the inner side wall of the externally threaded cylinder, and a sealing cone for sealing abutting against the inner wall of the sealing cylinder.

[0008] Preferably, a protective cylinder for protection is connected to the lower part of the inner wall of the external threaded cylinder, a sealing ring for sealing is connected to the inner wall of the protective cylinder, and a T-shaped rod for transmission is slidably connected to the inner wall of the sealing ring, the T-shaped rod being connected to the bottom of the sealing cone.

[0009] Preferably, the bottom of the T-shaped rod is connected to a spring for providing pressure, and the other end of the spring is connected to the inner wall of the externally threaded cylinder.

[0010] Preferably, a protective mechanism for protection is provided on the outer side of the guide roller body. The protective mechanism includes a T-shaped cylinder threadedly connected to the inner wall of the guide roller body, and a protective cylinder for protection is abutted against the outer side of the T-shaped cylinder. The protective cylinder is sleeved on the outer side of the guide roller body.

[0011] Preferably, the inner wall of the protective cylinder is provided with a locking groove for limiting the position, and a locking rod for limiting the position is engaged in the locking groove. The locking rod passes through and slides on the inner wall of the T-shaped cylinder.

[0012] Preferably, the insert rod has a guide groove, and a T-shaped frame for support is slidably connected in the groove, the T-shaped frame being connected to the inner wall of the T-shaped cylinder.

[0013] Preferably, a threaded groove is formed in the insert rod away from the slide groove, and a bidirectional threaded rod for driving the insert rod to move is threaded in the threaded groove. The bidirectional threaded rod is rotatably connected to the inner wall of the T-shaped cylinder through a bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The sealing cone is pressed against the sealing cylinder by a spring, preventing the backflow water pressure from passing through. Meanwhile, the water pressure entering the guide roller impacts the sealing cone, moving it away from the inner wall of the sealing cylinder and allowing water to flow through, thus preventing backflow.

[0016] 2. Remove the insert rod from the slot by rotating the double-threaded rod, and replace the protective sleeve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional cross-sectional structure of the guide roller body of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the protective cylinder of this utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the external threaded cylinder of this utility model;

[0020] Figure 4This is a three-dimensional structural diagram of the sealing cone of this utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the T-shaped frame of this utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the insertion rod of this utility model.

[0023] In the diagram: 1. Guide roller body; 2. Rotary joint; 3. Pipe; 4. One-way mechanism; 401. External threaded cylinder; 402. Protective cylinder; 403. Sealing ring; 404. T-shaped rod; 405. Spring; 406. Sealing cylinder; 407. Sealing cone; 6. Protective mechanism; 601. T-shaped cylinder; 602. Protective cylinder; 603. Slot; 604. Insert rod; 605. Slide groove; 606. T-shaped frame; 607. Threaded groove; 608. Two-way threaded rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-3 This utility model provides a technical solution: a guide roller with an anti-backflow structure, including a guide roller body 1 for conveying, a rotary joint 2 for compensation connected to the upper end and the lower end of the guide roller body 1, a water pipe 3 connected to the other end of the rotary joint 2, two sets of one-way mechanisms 4 provided on the inner wall of the guide roller body 1 near the two sets of rotary joints 2, and a protective mechanism 6 for protection provided on the outer side of the guide roller body 1.

[0026] The guide roller with anti-backflow structure is installed with the equipment through the outer cylinder outside the pipe 3. The rotary joint 2 prevents the pipe 3 from getting tangled when the guide roller body 1 rotates. The outlet pipe of the chiller is connected to the pipe 3 above, so that cold water is introduced into the guide roller body 1, which drives the heat on the guide roller body 1. Then, the water is discharged from the pipe 3 below the guide roller body 1 and returns to the chiller for circulation.

[0027] exist Figures 1-3 , Figure 5 and Figure 6In the middle, the protective mechanism 6 includes a T-shaped cylinder 601 threadedly connected to the inner wall of the guide roller body 1. The outer side of the T-shaped cylinder 601 abuts against a protective cylinder 602 for protection. The protective cylinder 602 is sleeved on the outer side of the guide roller body 1, and a retaining groove 603 for limiting is provided on the inner wall of the protective cylinder 602. A retaining rod 604 for limiting is engaged in the retaining groove 603. The retaining rod 604 passes through and slides on the inner wall of the T-shaped cylinder 601.

[0028] The guide roller with anti-backflow structure, the T-shaped cylinder 601 and the protective cylinder 602 are made of the same material as the guide roller body 1. The T-shaped cylinder 601 can be rotated and disassembled, and the guide roller body 1 can be used directly, which improves the applicability.

[0029] Push the insertion rod 604 to slide along the T-shaped bracket 606, pull it out from the slot 603, and retract it into the T-shaped tube 601. The protective tube 602 can be removed and replaced. The T-shaped tube 601 and the protective tube 602 can be engraved with icons for alignment. The auxiliary slot 603 is aligned with the insertion rod 604.

[0030] exist Figure 6 In the middle, the insert rod 604 has a guide groove 605, and a T-shaped frame 606 for support is slidably connected in the groove 605. The T-shaped frame 606 is connected to the inner wall of the T-shaped cylinder 601.

[0031] The guide roller with anti-backflow structure, T-shaped frame 606 and bidirectional threaded rod 608 support the two sets of insert rods 604 to improve the support capacity.

[0032] exist Figure 6 In the middle, a threaded groove 607 is provided in the insert rod 604 away from the slide groove 605. A bidirectional threaded rod 608 for driving the insert rod 604 to move is threaded in the threaded groove 607. The bidirectional threaded rod 608 is rotatably connected to the inner wall of the T-shaped cylinder 601 through a bracket.

[0033] The guide roller with anti-backflow structure rotates the bidirectional threaded rod 608 within the threaded groove 607, causing the two sets of insert rods 604 to slide in opposite directions along the T-shaped frame 606.

[0034] exist Figure 1 , Figure 3 and Figure 4 In the unidirectional mechanism 4, there is an externally threaded cylinder 401 that is threadedly connected to the inner wall of the guide roller body 1. A protective cylinder 402 for protection is connected to the lower part of the inner wall of the externally threaded cylinder 401. A sealing ring 403 for sealing is connected to the inner wall of the protective cylinder 402. A T-shaped rod 404 for transmission is slidably connected to the inner wall of the sealing ring 403. A spring 405 for providing pressure is connected to the bottom of the T-shaped rod 404. The other end of the spring 405 is connected to the inner wall of the externally threaded cylinder 401.

[0035] The guide roller with anti-backflow structure has a through hole at the bottom of the external threaded cylinder 401 for water to pass through. The sealing ring 403 fills the gap between the protective cylinder 402 and the T-shaped rod 404 to prevent the passing water from damaging the spring 405. The spring 405 pushes the T-shaped rod 404 to slide upward, so that the sealing cone 407 is pressed against the sealing cylinder 406 to prevent backflow.

[0036] exist Figure 4 In the middle, a sealing cylinder 406 for sealing is connected to the inner wall of the external threaded cylinder 401, and a sealing cone 407 for sealing is abutted on the inner wall of the sealing cylinder 406. The sealing cone 407 is connected to the upper surface of the T-shaped rod 404.

[0037] The guide roller with anti-backflow structure, the sealing ring 403, the sealing cylinder 406 and the sealing cone 407 are all made of rubber. The sealing cone 407 is pressed against the sealing cylinder 406 to seal it. The water pressure from top to bottom impacts the sealing cone 407, which drives the T-shaped rod 404 to compress the spring 405. When the water pressure is lost, the spring 405 pushes the T-shaped rod 404 and the sealing cone 407 to reset. At the same time, the backflowing water pressure impacts the sealing cone 407, pressing the sealing cone 407 against the sealing cylinder 406 and sealing the cylinder 406, thereby preventing backflow.

Claims

1. A guide roller having a backflow prevention structure, characterized by: It includes a guide roller body (1) for conveying, and a rotary joint (2) for compensation is connected to the upper end and the lower end of the guide roller body (1). The other end of the rotary joint (2) is connected to a pipe (3) for water conveying. Two sets of one-way mechanisms (4) are provided on the inner wall of the guide roller body (1) near the two sets of rotary joints (2). The one-way mechanism (4) includes an external threaded cylinder (401) threaded to the inner wall of the guide roller body (1), a sealing cylinder (406) for sealing is connected to the inner side wall of the external threaded cylinder (401), and a sealing cone (407) for sealing is abutted on the inner wall of the sealing cylinder (406).

2. The guide roller with an anti-backflow structure according to claim 1, characterized in that: The inner wall of the external threaded cylinder (401) is connected to a protective cylinder (402) for protection. A sealing ring (403) for sealing is connected to the inner wall of the protective cylinder (402). A T-shaped rod (404) for transmission is slidably connected to the inner wall of the sealing ring (403). The T-shaped rod (404) is connected to the bottom of the sealing cone (407).

3. The guide roller with an anti-backflow structure according to claim 2, characterized in that: The bottom of the T-shaped rod (404) is connected to a spring (405) for providing pressure, and the other end of the spring (405) is connected to the inner wall of the external threaded cylinder (401).

4. The guide roller with an anti-backflow structure according to claim 1, characterized in that: The outer side of the guide roller body (1) is provided with a protective mechanism (6) for protection. The protective mechanism (6) includes a T-shaped cylinder (601) threadedly connected to the inner wall of the guide roller body (1). The outer side of the T-shaped cylinder (601) abuts against a protective cylinder (602) for protection. The protective cylinder (602) is sleeved on the outer side of the guide roller body (1).

5. The guide roller with an anti-backflow structure according to claim 4, characterized in that: The inner wall of the protective cylinder (602) is provided with a retaining groove (603) for limiting the position. A retaining rod (604) for limiting the position is engaged in the retaining groove (603). The retaining rod (604) passes through and slides on the inner wall of the T-shaped cylinder (601).

6. The guide roller with an anti-backflow structure according to claim 5, characterized in that: The insert rod (604) has a guide groove (605) inside, and a T-shaped frame (606) for support is slidably connected in the groove (605). The T-shaped frame (606) is connected to the inner wall of the T-shaped cylinder (601).

7. A guide roller with an anti-backflow structure according to claim 5, characterized in that: A threaded groove (607) is provided in the insert rod (604) away from the slide groove (605). A bidirectional threaded rod (608) for driving the insert rod (604) to move is threaded in the threaded groove (607). The bidirectional threaded rod (608) is rotatably connected to the inner wall of the T-shaped cylinder (601) through a bracket.

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