Mechanical seal structure for vertical pipeline pump

Abstract

The utility model relates to fluid machinery technical field discloses a kind of mechanical seal structure for vertical pipeline pump, including mounting seat, the surface of mounting seat is equipped with annular groove, the inside fixed mounting of annular groove has sealing ring, the utility model is pulled by pull rod, drives tensile plate to ascend, to compress extension spring, make plug rod ascend, simultaneously, after positioning rod and magnetic attraction gasket contact, magnetic attraction gasket carries out preliminary magnetic attraction fixed to positioning rod, when loosening pull rod, extension spring resets and drives tensile plate to descend, plug rod carries out mechanical restriction to positioning rod by limit hole groove, improve the installation efficiency of sealing component, and the double fixed mode of magnetic attraction fixed and mechanical restriction combination, not only strengthen the stability of sealing ring installation, also avoid the situation that sealing ring loosens displacement due to external force impact or vibration occurs, to ensure the long-term reliability of sealing effect, effectively prolong the service life of mechanical seal structure, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of fluid machinery technology, and in particular to a mechanical seal structure for a vertical pipeline pump. Background Technology

[0002] In the field of fluid machinery technology, vertical pipeline pumps are a common liquid conveying equipment widely used in many industries such as chemical, petroleum, pharmaceutical, food processing, and water treatment. Their main function is to transport liquids from one location to another, ensuring efficient and safe liquid transmission. However, in actual operation, the pump's sealing performance is one of the key factors affecting its working efficiency and service life.

[0003] Traditional vertical pipeline pump sealing structures typically employ a single mechanical fixing method, such as using bolts, retaining rings, or springs to secure the sealing ring. However, these traditional methods have limitations. Bolt fixing requires tightening nuts one by one, while retaining ring fixing requires precise alignment of the retaining groove. These processes are not only time-consuming but also prone to improper operation, leading to insecure sealing ring installation. Furthermore, with a single fixing method, the sealing ring is easily loosened and displaced when subjected to external impacts or vibrations, resulting in seal failure. Once the seal fails, it will not only affect the normal operation of the pump but may also cause liquid leakage, resulting in environmental pollution, resource waste, and even safety accidents. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a mechanical seal structure for a vertical pipeline pump.

[0005] This utility model is achieved using the following technical solution: a mechanical seal structure for a vertical pipeline pump, including a mounting base, an annular groove on the surface of the mounting base, a sealing ring fixedly installed inside the annular groove, an assembly block fixedly connected to the surface of the sealing ring, a positioning rod fixedly connected to the surface of the assembly block, a locking seat fixedly connected to the surface of the mounting base, a magnetic gasket fixedly connected to the inner wall of the locking seat, a tension plate slidably connected to the inner wall of the locking seat, a telescopic spring fixedly connected to the upper surface of the tension plate, a pull rod fixedly connected to the upper surface of the tension plate, and an insertion rod fixedly connected to the lower surface of the tension plate.

[0006] Through the above technical solution, pulling the pull rod causes the tension plate to rise, which in turn compresses the telescopic spring, causing the insertion rod to rise. Simultaneously, after the positioning rod contacts the magnetic gasket, the magnetic gasket pre-magnetically fixes the positioning rod. When the pull rod is released, the telescopic spring returns to its original position, causing the tension plate to descend. The insertion rod mechanically restricts the positioning rod, improving the installation efficiency of the sealing components. Furthermore, the dual fixing method combining magnetic fixation and mechanical restriction not only enhances the stability of the sealing ring installation but also avoids the loosening and displacement of the sealing ring due to external impact or vibration. This ensures the long-term reliability of the sealing effect, effectively extends the service life of the mechanical seal structure, and reduces maintenance costs.

[0007] As a further improvement to the above solution, the number of the assembly blocks is set to two, and the two assembly blocks are respectively fixedly connected to both sides of the outer surface of the sealing ring.

[0008] As a further improvement to the above solution, a limiting groove is formed on the surface of the insertion rod, and the insertion rod passes through the limiting groove.

[0009] As a further improvement to the above solution, grooves are provided on both sides of the outer surface of the mounting base, and the grooves and the assembly block are adapted to each other.

[0010] With the above technical solution, during the installation process, the assembly block can be smoothly inserted into the groove, guiding the sealing ring to be accurately embedded in the annular groove, thus avoiding the sealing ring from being skewed or not in place during the installation process.

[0011] As a further improvement to the above solution, the surface of the locking seat is provided with a clearance hole, which is adapted to the positioning rod.

[0012] As a further improvement to the above solution, the positioning rod is in contact with the magnetic pad, and the positioning rod is a metal positioning rod.

[0013] As a further improvement to the above solution, the upper surface of the locking seat is provided with a slot that matches the pull rod, and the pull rod is slidably connected inside the slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a pull rod to raise the tension plate, which in turn compresses the telescopic spring, causing the insertion rod to rise. Simultaneously, the positioning rod contacts the magnetic pad, which pre-magnetically fixes the positioning rod. When the pull rod is released, the telescopic spring returns to its original position, causing the tension plate to descend. The insertion rod then mechanically restricts the positioning rod through the limiting slot, improving the installation efficiency of the sealing components. Furthermore, the dual fixing method combining magnetic fixation and mechanical restriction not only enhances the stability of the sealing ring installation but also prevents the sealing ring from loosening or shifting due to external impacts or vibrations. This ensures the long-term reliability of the sealing effect, effectively extends the service life of the mechanical seal structure, and reduces maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the positioning rod of this utility model; Figure 3 This is a schematic diagram of the locking seat of this utility model; Figure 4 This utility model Figure 3 A magnified structural diagram of point A in the middle.

[0016] Explanation of key symbols: 1. Mounting base; 2. Annular groove; 3. Sealing ring; 4. Assembly block; 5. Positioning rod; 6. Locking seat; 7. Magnetic gasket; 8. Tension plate; 9. Telescopic spring; 10. Pull rod; 11. Insert rod; 12. Restriction hole groove; 13. Groove; 14. Clearance hole. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0018] Please combine Figure 1-4This embodiment of a mechanical seal structure for a vertical pipeline pump includes a mounting base 1. An annular groove 2 is formed on the surface of the mounting base 1. A sealing ring 3 is fixedly installed inside the annular groove 2. An assembly block 4 is fixedly connected to the surface of the sealing ring 3. A positioning rod 5 is fixedly connected to the surface of the assembly block 4. A locking seat 6 is fixedly connected to the surface of the mounting base 1. A magnetic gasket 7 is fixedly connected to the inner wall of the locking seat 6. A tension plate 8 is slidably connected to the inner wall of the locking seat 6. A telescopic spring 9 is fixedly connected to the upper surface of the tension plate 8. A pull rod 10 is fixedly connected to the upper surface of the tension plate 8. An insertion rod 11 is fixedly connected to the lower surface of the tension plate 8. When the sealing ring 3 is first placed into the annular groove 2 on the surface of the mounting base 1, the positioning rod 5 on the surface of the assembly block 4 will simultaneously insert into the locking seat 6 on the surface of the mounting base 1. Then, the operator pulls the lever 10 upwards, causing the tension plate 8 to rise. The rise of the tension plate 8 compresses the telescopic spring 9, and the insertion rod 11 also rises. When the insertion rod 11 no longer obstructs the insertion of the positioning rod 5, the operator installs the sealing ring 3 inside the annular groove 2. The positioning rod 5 is also installed in place and contacts the magnetic pad 7 on the inner wall of the locking seat 6. The magnetic pad 7 pre-magnetically fixes the positioning rod 5. Then, the operator releases the pulling force on the lever 10. Under the reset action of the telescopic spring 9, the tension plate 8 descends. The descent of the tension plate 8 causes the insertion rod 11 to descend. The insertion rod 11 restricts the positioning rod 5, locking the positioning rod 5 inside the locking seat 6. Through the double fixation of the magnetic pad 7 and the insertion rod 11, the sealing ring 3 is stably installed.

[0019] There are two assembly blocks 4, which are fixedly connected to both sides of the outer surface of the sealing ring 3.

[0020] A limiting hole groove 12 is provided on the surface of the insertion rod 11, and the insertion rod 11 passes through the limiting hole groove 12.

[0021] Grooves 13 are provided on both sides of the outer surface of the mounting base 1. The grooves 13 and the assembly block 4 are adapted to each other. When the sealing ring 3 is inserted into the interior of the annular groove 2, the assembly block 4 will be inserted into the interior of the groove 13, thereby ensuring that the sealing ring 3 can be completely embedded in the interior of the annular groove 2.

[0022] The surface of the locking seat 6 is provided with a clearance hole 14, which is compatible with the positioning rod 5.

[0023] The positioning rod 5 is in contact with the magnetic pad 7, and the positioning rod 5 is a metal positioning rod.

[0024] The upper surface of the locking seat 6 is provided with a slot that matches the pull rod 10, and the pull rod 10 is slidably connected inside the slot.

[0025] The implementation principle of a mechanical seal structure for a vertical pipeline pump in this application embodiment is as follows: First, the sealing ring 3 is placed in the annular groove 2 on the surface of the mounting base 1, and the assembly block 4 is inserted into the groove 13 to further ensure that the sealing ring 3 is completely embedded in the annular groove 2. At this time, the assembly blocks 4 on both sides of the sealing ring 3 will simultaneously drive the positioning rod 5 to insert into the locking seat 6 on the surface of the mounting base 1.

[0026] Secondly, pull the lever 10 upwards. The rise of the lever 10 will cause the tension plate 8 to rise, which will compress the telescopic spring 9 on the upper surface of the tension plate 8. At the same time, the insertion rod 11 on the lower surface of the tension plate 8 will also rise. When the insertion rod 11 rises to a certain position and no longer blocks the insertion of the positioning rod 5, the positioning rod 5 can smoothly contact the magnetic pad 7 on the inner wall of the locking seat 6. Since the positioning rod 5 is made of metal, the magnetic pad 7 will pre-magnetically fix the positioning rod 5.

[0027] Then, the tension on the pull rod 10 is released. Under the reset action of the telescopic spring 9, the tension plate 8 begins to descend. The descent of the tension plate 8 drives the insertion rod 11 to descend. The insertion rod 11 restricts the positioning rod 5 through the limiting hole groove 12 on its surface, firmly locking the positioning rod 5 inside the locking seat 6. Through the dual action of magnetic attraction of the magnetic pad 7 and mechanical restriction of the insertion rod 11, the positioning rod 5 is stably fixed, thereby ensuring that the sealing ring 3 can be stably installed inside the annular groove 2. The dual fixing method of magnetic attraction and mechanical restriction not only enhances the stability of the sealing ring 3 installation, but also avoids the situation where the sealing ring 3 is loosened or displaced due to external impact or vibration, thereby ensuring the long-term reliability of the sealing effect, effectively extending the service life of the mechanical seal structure, and reducing maintenance costs.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A mechanical seal structure for a vertical pipeline pump, characterized in that, The device includes a mounting base (1), an annular groove (2) on the surface of the mounting base (1), a sealing ring (3) fixedly installed inside the annular groove (2), an assembly block (4) fixedly connected to the surface of the sealing ring (3), a positioning rod (5) fixedly connected to the surface of the assembly block (4), a locking seat (6) fixedly connected to the surface of the mounting base (1), a magnetic pad (7) fixedly connected to the inner wall of the locking seat (6), a tension plate (8) slidably connected to the inner wall of the locking seat (6), a telescopic spring (9) fixedly connected to the upper surface of the tension plate (8), a pull rod (10) fixedly connected to the upper surface of the tension plate (8), and an insert rod (11) fixedly connected to the lower surface of the tension plate (8).

2. The mechanical seal structure for a vertical pipeline pump as described in claim 1, characterized in that: The number of the assembly blocks (4) is set to two, and the two assembly blocks (4) are respectively fixedly connected to both sides of the outer surface of the sealing ring (3).

3. The mechanical seal structure for a vertical pipeline pump as described in claim 1, characterized in that: The surface of the insertion rod (11) is provided with a limiting groove (12), and the insertion rod (11) passes through the limiting groove (12).

4. The mechanical seal structure for a vertical pipeline pump as described in claim 1, characterized in that: The mounting base (1) has grooves (13) on both sides of its outer surface, and the grooves (13) and the assembly block (4) are compatible with each other.

5. The mechanical seal structure for a vertical pipeline pump as described in claim 1, characterized in that: The surface of the locking seat (6) is provided with a clearance hole (14), which is adapted to the positioning rod (5).

6. The mechanical seal structure for a vertical pipeline pump as described in claim 1, characterized in that: The positioning rod (5) is in contact with the magnetic pad (7), and the positioning rod (5) is a metal positioning rod.

7. The mechanical seal structure for a vertical pipeline pump as described in claim 1, characterized in that: The upper surface of the locking seat (6) is provided with a slot that matches the pull rod (10), and the pull rod (10) is slidably connected to the inside of the slot.

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