Dismounting device for pump stuffing box

Abstract

The utility model discloses a pump stuffing box dismounting device, which belongs to the technical field of stuffing box dismounting and comprises a dismounting main rod, threaded connecting rods, a dismounting ejector rod and an adjusting ring, the adjusting ring is mounted in the middle of the dismounting main rod, and the threaded connecting rods are respectively connected to two ends of the dismounting main rod. The two threaded connecting rods are in threaded connection with detachable ejector rods respectively. The device has the advantages that the device is placed between the stuffing box and the pump body support, the disassembling main rod and the threaded connecting rod are rotated, the disassembling ejector rods at the two ends can be driven to expand towards the two sides, the stuffing box and the pump body support are squeezed mutually, and therefore the mechanical jacking force of the screw acts on the stuffing box body, and the stuffing box is disassembled. Axial movement of the stuffing box is achieved, and the function of disassembling the stuffing box is achieved.

Description

Technical Field

[0001] This utility model relates to the field of stuffing box disassembly technology, and more specifically, to a pump stuffing box disassembly device. Background Technology

[0002] As a key component of pumps, the stuffing box is a sealing material device that fills the space between the pump bearing and the mechanical seal. Functionally, the stuffing box effectively seals the gap between the pump shaft and moving parts through its highly elastic material, preventing media leakage and ensuring stable pump operation. Simultaneously, it utilizes the frictional properties of specific materials to reduce pump body wear and extend service life. Furthermore, the stuffing material also provides cooling and lubrication effects, lowering the pump's operating temperature and further improving pump efficiency and durability. Stuffing box disassembly is widely used in the maintenance procedures of alumina companies. Due to prolonged use, the accumulation of material and scale inside the mechanical seal makes disassembly difficult, which is a common issue in routine maintenance.

[0003] In existing technologies, due to space constraints, disassembly tools such as jacks cannot be used. Conventional disassembly methods involve manual hammering with sledgehammers, which is time-consuming, physically demanding, and poses significant safety hazards. Furthermore, a utility model patent with publication number CN212893422U discloses a symmetrical, powerful tool for removing stuffing boxes, comprising two symmetrically arranged wedge hooks connected by wedge top rods. Each wedge hook is also connected to a double-ended stud rod, which is connected by a bridge-type support plate. The bridge-type support plate is fixed to the double-ended stud rods by lifting nuts. However, this method lacks safety, convenience, practicality, and durability, and its effectiveness needs improvement. Utility Model Content

[0004] To overcome the limitations of existing technologies where space restricts the use of disassembly tools such as jacks, and where conventional disassembly methods rely on manual hammering, which is time-consuming, physically demanding, and poses significant safety hazards, this invention provides a pump stuffing box disassembly device. The device includes a disassembly main rod, threaded connecting rods, a disassembly top rod, and an adjusting ring. The adjusting ring is installed at the middle position of the disassembly main rod. Threaded connecting rods are connected to both ends of the disassembly main rod, and disassembly top rods are threaded onto each of the two threaded connecting rods.

[0005] The device is placed between the stuffing box and the pump body support. By rotating the main rod and the threaded connecting rod, the disassembly rods at both ends can be expanded to both sides, and the stuffing box and the pump body support can be squeezed against each other. This will apply the mechanical lifting force of the screw to the stuffing box body, realize the axial movement of the stuffing box, and realize the disassembly function of the stuffing box.

[0006] Preferably, the adjusting ring is a hexagonal nut.

[0007] Preferably, adjusting gears are installed on both sides of the adjusting ring, and both adjusting gears are coaxially arranged with the adjusting ring.

[0008] Preferably, a pressure plate is installed at the end of each of the two disassembly push rods away from the threaded connecting rod.

[0009] Preferably, a pressure-bearing reinforcing plate is installed inside the top pressure plate, and a wear-resistant layer is provided on the outer surface of the top pressure plate.

[0010] The top pressure plate installed on the disassembly top rod can make close contact with the surface of the stuffing box. At the same time, the top pressure plate is provided with a pressure-bearing reinforcing plate and a wear-resistant layer, which can improve the pressure-bearing capacity of the top pressure plate and prevent the top pressure plate from being squeezed and damaged.

[0011] Preferably, the disassembly push rod has a threaded groove inside that matches the threaded connecting rod.

[0012] Preferably, a U-shaped fixing bracket is provided below the main disassembly rod, and a bearing is provided inside the top of the fixing bracket, with the main disassembly rod inserted and connected inside the bearing.

[0013] Preferably, a fixing base plate is installed at the bottom of the fixing bracket, and fixing holes are provided on the fixing base plate.

[0014] Preferably, the main disassembly rod, threaded connecting rod, disassembly top rod, and adjusting ring are made of stainless steel.

[0015] The adjustment ring allows the main disassembly rod to be rotated using a wrench, while the adjustment gear next to the adjustment ring allows the main disassembly rod to be rotated via a gear drive device, greatly simplifying the use of the device.

[0016] Beneficial effects:

[0017] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0018] (1) Place the device between the stuffing box and the pump body support. By rotating the main rod and the threaded connecting rod, the disassembly rods at both ends can be driven to expand to both sides and squeeze the stuffing box and the pump body support against each other. This will put the mechanical lifting force of the screw onto the stuffing box body, realize the axial movement of the stuffing box, and realize the disassembly function of the stuffing box.

[0019] (2) The top pressure plate installed on the disassembly top rod can be in close contact with the surface of the stuffing box. At the same time, the top pressure plate is provided with a pressure-bearing reinforcing plate and a wear-resistant layer, which can improve the pressure-bearing capacity of the top pressure plate and avoid squeezing and damaging the top pressure plate.

[0020] (3) By adjusting the ring, the main rod can be rotated by a wrench, and by adjusting the gear next to the ring, the main rod can be rotated by a gear drive device, which greatly facilitates the use of the device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the pump stuffing box disassembly device of this utility model;

[0023] Figure 2 This is a schematic diagram of the connection structure on the front of the pump stuffing box disassembly device of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal connection structure of the pump stuffing box disassembly device of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the adjusting ring on the pump stuffing box disassembly device of this utility model.

[0026] In the diagram: 1. Main rod disassembly; 2. Threaded connecting rod; 3. Top rod disassembly; 4. Top pressure plate; 5. Adjusting ring; 6. Fixed bracket; 7. Fixed base plate; 8. Fixed hole; 9. Adjusting gear; 10. Threaded groove; 11. Pressure-bearing reinforcing plate; 12. Wear-resistant layer; 13. Bearing. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] This embodiment places the device between the stuffing box and the pump body support. By rotating the main disassembly rod and the threaded connecting rod, the disassembly jacks at both ends can be expanded to both sides, causing the stuffing box and the pump body support to press against each other. This applies the mechanical lifting force of the screw to the stuffing box body, realizing axial movement of the stuffing box and achieving the disassembly function. The specific implementation method is as follows:

[0029] like Figures 1 to 4 As shown, a pump stuffing box disassembly device includes a disassembly main rod 1, threaded connecting rods 2, disassembly top rods 3, and adjusting rings 5. The adjusting rings 5 ​​are installed at the middle position of the disassembly main rod 1. Threaded connecting rods 2 are connected to both ends of the disassembly main rod 1, and disassembly top rods 3 are threaded onto each of the two threaded connecting rods 2. When the device is placed between the stuffing box and the pump body support, the disassembly main rod 1 and threaded connecting rods 2 are rotated by driving the adjusting rings 5. This causes the disassembly top rods 3 at both ends to expand to both sides, and to squeeze the stuffing box and the pump body support against each other. This applies the mechanical lifting force of the screws to the stuffing box body, realizing the axial movement of the stuffing box and achieving the disassembly function of the stuffing box.

[0030] Adjusting ring 5 is a hexagonal nut. With adjusting ring 5, the disassembly main rod 1 can be rotated using a wrench.

[0031] Adjusting gears 9 are installed on both sides of the adjusting ring 5, and both adjusting gears 9 are coaxially arranged with the adjusting ring 5. Through the setting of the adjusting gears 9 on the side of the adjusting ring 5, the disassembly main rod 1 can be rotated by the gear drive device, which greatly facilitates the use of the device.

[0032] Each of the two disassembly push rods 3 has a pressure plate 4 installed at the end furthest from the threaded connecting rod 2. The pressure plate 4 can make close contact with the surface of the stuffing box, improving the effect of top pressure disassembly.

[0033] The top pressure plate 4 has a pressure-bearing reinforcing plate 11 installed inside, and a wear-resistant layer 12 is provided on the outer surface of the top pressure plate 4. By providing a pressure-bearing reinforcing plate 11 on the surface of the top pressure plate 4, the pressure-bearing capacity of the top pressure plate 4 can be improved and damage to the top pressure plate 4 can be avoided by squeezing. At the same time, under the action of the wear-resistant layer 12, the wear resistance can be improved, further improving the durability of the device.

[0034] The disassembly push rod 3 has a threaded groove 10 inside that matches the threaded connecting rod 2. The threaded groove 10 facilitates threaded connection with the threaded connecting rod 2, and the threads of the threaded connecting rod 2 at both ends are opposite, so that synchronous reverse movement can be achieved during the rotational disassembly of the main rod 1.

[0035] A U-shaped fixing bracket 6 is provided below the main disassembly rod 1. A bearing 13 is installed inside the top of the fixing bracket 6, and the main disassembly rod 1 is inserted and connected inside the bearing 13. The fixing bracket 6 can support the main disassembly rod 1 when needed, and the bearing 13 can be installed without affecting the rotation of the main disassembly rod 1.

[0036] A base plate 7 is installed at the bottom of the fixed bracket 6, and the base plate 7 is provided with fixing holes 8. Through the base plate 7 and fixing holes 8, the fixed bracket 6 can be fixed to the corresponding platform when needed, thereby maintaining the stability of the entire device.

[0037] The main disassembly rod 1, threaded connecting rod 2, disassembly top rod 3, and adjusting ring 5 are all made of stainless steel. The entire device has a simple structure and is easy to use. It can effectively solve the problem of difficult disassembly of the packing box with scale buildup inside the mechanical seal, achieving inherent safety.

[0038] Working Principle: The device is placed between the stuffing box and the pump body support. By rotating the disassembly main rod and threaded connecting rod, the disassembly push rods at both ends can be driven to expand to both sides, and the stuffing box and the pump body support are squeezed against each other. This applies the mechanical lifting force of the screw to the stuffing box body, realizing the axial movement of the stuffing box and achieving the disassembly function. The top pressure plate set on the disassembly push rod can make close contact with the surface of the stuffing box. At the same time, the surface of the top pressure plate is equipped with a pressure-bearing reinforcing plate and a wear-resistant layer, which can improve the pressure-bearing capacity of the top pressure plate and prevent the top pressure plate from being crushed and damaged. The disassembly main rod can be rotated by a wrench through the setting of the adjusting ring, and the disassembly main rod can be rotated by a gear drive device through the setting of the adjusting gear next to the adjusting ring, which provides great convenience for the use of the device.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pump stuffing box disassembly device, characterized in that, It includes a disassembly main rod (1), a threaded connecting rod (2), a disassembly top rod (3), and an adjusting ring (5). The adjusting ring (5) is installed at the middle position of the disassembly main rod (1). The two ends of the disassembly main rod (1) are respectively connected to the threaded connecting rod (2), and the two threaded connecting rods (2) are respectively threaded with the disassembly top rod (3).

2. The pump stuffing box disassembly device according to claim 1, characterized in that, The adjusting ring (5) is a hexagonal nut.

3. The pump stuffing box disassembly device according to claim 1, characterized in that, Adjusting gears (9) are installed on both sides of the adjusting ring (5), and both adjusting gears (9) are coaxially arranged with the adjusting ring (5).

4. A pump stuffing box disassembly device according to claim 1, characterized in that, Each of the two disassembly push rods (3) has a top pressure plate (4) installed at the end away from the threaded connecting rod (2).

5. A pump stuffing box disassembly device according to claim 4, characterized in that, The top pressure plate (4) is equipped with a pressure-bearing reinforcing plate (11) inside, and a wear-resistant layer (12) is provided on the outer surface of the top pressure plate (4).

6. A pump stuffing box disassembly device according to claim 1, characterized in that, The disassembly push rod (3) has a threaded groove (10) inside that matches the threaded connecting rod (2).

7. A pump stuffing box disassembly device according to claim 1, characterized in that, A U-shaped fixing bracket (6) is provided below the disassembly main rod (1). A bearing (13) is provided inside the top of the fixing bracket (6), and the disassembly main rod (1) is inserted and connected inside the bearing (13).

8. A pump stuffing box disassembly device according to claim 7, characterized in that, The bottom of the fixed bracket (6) is equipped with a fixed base plate (7), and the fixed base plate (7) is provided with fixing holes (8).

9. A pump stuffing box disassembly device according to claim 1, characterized in that, The main disassembly rod (1), threaded connecting rod (2), disassembly top rod (3), and adjusting ring (5) are made of stainless steel.

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