Fluoroplastic alloy centrifugal pump sealing structure

Abstract

The utility model discloses a fluoroplastic alloy centrifugal pump sealing structure, and relates to the technical field of sealing structures, the fluoroplastic alloy centrifugal pump sealing structure comprises two groups of half flange sleeves, the left side and the right side of each half flange sleeve are respectively welded with a half pipe sleeve, the front end and the rear end of each half pipe sleeve are respectively welded with a connecting block, and a reserved screw hole is formed in the middle position in each connecting block. According to the fluoroplastic alloy centrifugal pump sealing structure, the half flange sleeves, the half pipe sleeves, the flange screw eye grooves and the butt joint sealing gaskets are arranged, when the fluoroplastic alloy centrifugal pump sealing structure is used, the two half flange sleeves are sleeved along the flange connecting position, the two half flange sleeves are spliced to clamp and wrap flange plates of a pump and a pipe, and the half pipe sleeves are arranged outside a port and a pipeline in a sleeving mode; along with the locking of the connecting bolts on the connecting blocks, the two groups of flanges are tightly pressed, the edge gaps of the flanges are blocked by the sealing gaskets at the butt joint positions, and the bolts are driven along the flange screw eye grooves, so that the function of externally reinforcing and improving the sealing performance is realized, and the problem that the device does not have the function of externally reinforcing and improving the sealing performance is solved.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, specifically a fluoroplastic alloy centrifugal pump sealing structure. Background Technology

[0002] Fluoroplastic alloy centrifugal pumps are suitable for long-term transportation of various corrosive media such as strong acids, alkalis, salts, and strong oxidants of any concentration. The casing is made of metal with a polytetrafluoroethylene (FEP) lining, and all flow parts are made of plastic alloy (PTFE, FEP).

[0003] Fluoroplastic alloy centrifugal pumps typically use flange connections for the inlet, outlet, and pipeline. Since they transport corrosive media, leaks can easily cause production accidents. The usual sealing method is to add a sealing ring at the flange connection to improve sealing performance. However, the vibration generated during pump operation can cause the bolts to rotate, loosening the flange and significantly reducing the sealing performance of the sealing ring. Therefore, they do not have the function of external reinforcement to improve sealing performance.

[0004] Now, a novel fluoroplastic alloy centrifugal pump sealing structure is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a fluoroplastic alloy centrifugal pump sealing structure to solve the problem mentioned in the background art of not having the function of external reinforcement to improve sealing performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fluoroplastic alloy centrifugal pump sealing structure, comprising two sets of half flange sleeves, half pipe sleeves welded to the left and right sides of the half flange sleeves respectively, multiple sets of flange bolt grooves opened on the left and right sides of the half flange sleeves respectively, a sealing gasket for the mating joint glued inside the half flange sleeves, connecting blocks welded to the front and rear ends of the half pipe sleeves respectively, and a reserved bolt hole opened in the middle position inside the connecting block.

[0007] As a further technical solution of this utility model, the half-pipe sleeve is symmetrically distributed about the vertical center line of the half-flange sleeve, and the flange bolt grooves are arranged at equal intervals.

[0008] As a further technical solution of this utility model, the vertical center lines of the half flange sleeve and the sealing gasket at the joint coincide, and the sealing gasket at the joint is elastic.

[0009] As a further technical solution of this utility model, the flange bolt groove positions on both sides of the half flange sleeve correspond one-to-one, and the flange bolt grooves penetrate the inner and outer surfaces of the half flange sleeve.

[0010] As a further technical solution of this utility model, the left and right sides of the reserved screw hole are respectively provided with mating magnets, and the interior of the reserved screw hole is inserted with connecting bolts.

[0011] As a further technical solution of this utility model, the connecting bolt passes through the interior of the reserved screw hole and extends to the exterior, and the upper and lower ends of the connecting block and the mating magnet are flush.

[0012] As a further technical solution of this utility model, the front and rear ends of the half flange are respectively fixedly connected to annular fixing seats, a threaded rod is inserted into the inside of the annular fixing seat, and an adjusting rod is welded to the end of the threaded rod.

[0013] As a further technical solution of this utility model, the annular fixing seat has internal threads, and the external threads of the threaded rod match the internal threads of the annular fixing seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the fluoroplastic alloy centrifugal pump sealing structure not only realizes the function of external reinforcement to improve sealing performance, but also realizes the function of easy docking and pre-fixing, and also realizes the function of easy rotation and angle adjustment.

[0015] (1) By setting up half flange sleeves, half pipe sleeves, flange bolt grooves and sealing gaskets at the joint, when in use, the feed end and discharge end of the fluoroplastic alloy centrifugal pump are connected to the pipeline through flanges. Taking the feed end as an example, after the port flange and the pipeline flange are aligned, the two sets of half flange sleeves are put on along the flange connection position. The two sets of half flange sleeves are spliced ​​to enclose the flanges of the pump and the pipe. The half pipe sleeve is put on the outside of the port and the pipeline. As the connecting bolts on the connecting block are tightened, the two sets of flanges are tightly pressed together. The edge gaps of the flanges are sealed by the sealing gaskets at the joint. Bolts are driven in along the flange bolt grooves to connect and fix the two sets of flanges, realizing the function of external reinforcement and improved sealing.

[0016] (2) By setting up connecting blocks, reserved screw holes, docking magnets and connecting bolts, when in use, the upper and lower sets of connecting blocks are attached, the reserved screw holes are aligned, and the docking magnets on the connecting blocks are attracted, which can make the upper and lower sets of half-tube sleeves attracted, without the need for hand support and fixing, and facilitate the driving of connecting bolts, thus realizing the function of easy docking and pre-fixing.

[0017] (3) By setting an annular fixed seat, adjusting rod and threaded rod, when adjusting the flange bolt groove and the flange bolt position on the pipe and pump to align, the adjusting rod is inserted into the annular fixed seat and locked by the threaded rod. The outward-extending adjusting rod makes it easy to grip and exert force to move the half flange sleeve, thus realizing the function of easy rotation and angle adjustment. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 This is a partial sectional view of the side of the semi-flange sleeve of this utility model.

[0020] Figure 3 This is a bottom view schematic diagram of the semi-flange sleeve structure of this utility model;

[0021] Figure 4 This is a frontal cross-sectional structural diagram of the present invention and the pump and pipe assembly.

[0022] In the diagram: 1. Half flange sleeve; 2. Half pipe sleeve; 3. Flange bolt eye groove; 4. Sealing gasket at the joint; 5. Connecting block; 6. Reserved bolt eye; 7. Joint magnet; 8. Connecting bolt; 9. Annular fixing seat; 10. Adjusting rod; 11. Threaded rod. Detailed Implementation

[0023] 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.

[0024] Example: Please refer to Figure 1-4 A fluoroplastic alloy centrifugal pump sealing structure includes two sets of half flange sleeves 1, half pipe sleeves 2 are welded to the left and right sides of the half flange sleeves 1 respectively, multiple sets of flange bolt grooves 3 are opened on the left and right sides of the half flange sleeves 1 respectively, a sealing gasket 4 is glued to the inside of the half flange sleeves 1, and connecting blocks 5 are welded to the front and rear ends of the half pipe sleeves 2 respectively, and a reserved bolt hole 6 is opened in the middle position inside the connecting block 5.

[0025] The half-pipe sleeve 2 is symmetrically distributed about the vertical center line of the half-flange sleeve 1. The flange bolt grooves 3 are arranged at equal intervals. The vertical center lines of the half-flange sleeve 1 and the sealing gasket 4 at the joint coincide. The sealing gasket 4 at the joint is elastic. The flange bolt grooves 3 on both sides of the half-flange sleeve 1 correspond one-to-one. The flange bolt grooves 3 penetrate the inner and outer surfaces of the half-flange sleeve 1. The sealing performance is further improved through external reinforcement.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, two sets of half flange sleeves 1 are put on along the flange connection position. The two sets of half flange sleeves 1 are spliced ​​together to enclose the flange of the pump and pipe. Half pipe sleeve 2 is put on the outside of the port and the pipe. As the connecting bolts 8 on the connecting block 5 are tightened, the two sets of flanges are tightly pressed together. The edge gap of the flange is sealed by the sealing gasket 4 at the joint. Bolts are driven in along the flange bolt hole groove 3 to connect and fix the two sets of flanges.

[0027] A mating magnet 7 is provided on the left and right sides of the reserved screw hole 6. A connecting bolt 8 is inserted into the inside of the reserved screw hole 6. The connecting bolt 8 passes through the inside of the reserved screw hole 6 and extends to the outside. The upper and lower ends of the connecting block 5 and the mating magnet 7 are flush, which facilitates docking and assembly.

[0028] Specifically, such as Figure 1 and Figure 3 As shown, the mating magnet 7 on the connecting block 5 can attract the upper and lower sets of half-tube sleeves 2, eliminating the need for manual fixation and facilitating the insertion of the connecting bolts 8.

[0029] Annular fixing seats 9 are fixedly connected to the front and rear ends of the half flange sleeve 1, and a threaded rod 11 is inserted into the inside of the annular fixing seat 9. An adjusting rod 10 is welded to the end of the threaded rod 11. The inside of the annular fixing seat 9 is threaded, and the threads on the outside of the threaded rod 11 match the threads inside the annular fixing seat 9, making it easy to bend and adjust the angle.

[0030] Specifically, such as Figure 2 and Figure 4 As shown, the adjusting rod 10 is inserted into the annular fixed seat 9 and locked by the threaded rod 11. The outwardly extending adjusting rod 10 facilitates gripping and force application to move the half flange sleeve 1.

[0031] Working Principle: In use, the inlet and outlet ends of the fluoroplastic alloy centrifugal pump are first connected to the pipeline via flanges. Taking the inlet end as an example, after aligning the port flange and the pipeline flange, two sets of half-flange sleeves 1 are fitted along the flange connection position. The two sets of half-flange sleeves 1 are spliced ​​together to enclose the flanges of the pump and pipeline. The half-pipe sleeves 2 are fitted over the outside of the port and pipeline. As the connecting bolts 8 on the connecting block 5 are tightened, the two sets of flanges are tightly pressed together. The edge gaps of the flanges are sealed by the sealing gasket 4 at the joint. Bolts are driven into the flange bolt holes 3 to connect and fix the two sets of flanges. The upper and lower sets of connecting blocks 5 are fitted together, the reserved bolt holes 6 are aligned, and the mating magnets 7 on the connecting blocks 5 are attracted, which can make the upper and lower sets of half-pipe sleeves 2 attracted together without manual support, facilitating the driving of the connecting bolts 8. When adjusting the flange bolt groove 3 and the flange bolt position on the pipe and pump to align, insert the adjusting rod 10 into the annular fixing seat 9 and lock it through the threaded rod 11. The outwardly extending adjusting rod 10 facilitates gripping and force application to move the half flange sleeve 1.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sealing structure for a fluoroplastic alloy centrifugal pump, comprising two sets of half-flange sleeves (1), characterized in that: The left and right sides of the half flange sleeve (1) are respectively welded with half pipe sleeves (2), and multiple sets of flange bolt grooves (3) are opened on the left and right sides of the half flange sleeve (1). The inside of the half flange sleeve (1) is glued with a joint sealing gasket (4). The front and rear ends of the half pipe sleeve (2) are respectively welded with connecting blocks (5), and a reserved bolt hole (6) is opened in the middle position inside the connecting block (5).

2. The fluoroplastic alloy centrifugal pump sealing structure according to claim 1, characterized in that: The half-pipe sleeve (2) is symmetrically distributed about the vertical center line of the half-flange sleeve (1), and the flange bolt grooves (3) are arranged at equal intervals.

3. The fluoroplastic alloy centrifugal pump sealing structure according to claim 1, characterized in that: The vertical center lines of the half flange sleeve (1) and the mating gasket (4) coincide, and the mating gasket (4) is elastic.

4. The fluoroplastic alloy centrifugal pump sealing structure according to claim 1, characterized in that: The flange bolt grooves (3) on both sides of the half flange sleeve (1) are in one-to-one correspondence in position and size, and the flange bolt grooves (3) penetrate the inner and outer surfaces of the half flange sleeve (1).

5. The fluoroplastic alloy centrifugal pump sealing structure according to claim 1, characterized in that: A mating magnet (7) is provided on the left and right sides of the reserved screw hole (6), and a connecting bolt (8) is inserted into the inside of the reserved screw hole (6).

6. The fluoroplastic alloy centrifugal pump sealing structure according to claim 5, characterized in that: The connecting bolt (8) passes through the interior of the reserved screw hole (6) and extends to the outside. The upper and lower ends of the connecting block (5) and the mating magnet (7) are flush.

7. The fluoroplastic alloy centrifugal pump sealing structure according to claim 1, characterized in that: The front and rear ends of the half flange sleeve (1) are respectively fixedly connected to annular fixing seats (9), and a threaded rod (11) is inserted into the inside of the annular fixing seat (9). An adjusting rod (10) is welded to the end of the threaded rod (11).

8. The fluoroplastic alloy centrifugal pump sealing structure according to claim 7, characterized in that: The annular fixing seat (9) has internal threads, and the external threads of the threaded rod (11) match the internal threads of the annular fixing seat (9).

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