Novel vertical pipeline pump

Abstract

The utility model relates to the technical field of vertical pipeline pumps, and provides a novel vertical pipeline pump which comprises a pump shaft, the upper end of the pump shaft is connected with a half coupling, the lower end of the pump shaft penetrates through a bearing box body, an upper rolling bearing and a lower rolling bearing are arranged in the bearing box body, and the upper rolling bearing and the lower rolling bearing are respectively assembled on the pump shaft. The upper bearing box gland is arranged on the upper portion of the bearing box body, the upper portion of the moving ring spring is connected with the moving ring sealing rubber ring, the sealing moving ring is arranged in the moving ring sealing rubber ring and is in contact fit with the sealing static ring, the static ring sealing ring is arranged on the outer ring of the sealing static ring, and the outer side of the static ring sealing ring is in contact with the lower portion of the adjusting pad. According to the scheme, in the using process, when leakage happens to the seal, leaked water cannot enter the bearing box to cause damage to a bearing, and when slight leakage happens to the seal, the compression amount of the seal can be adjusted by adjusting the adjusting bolt, so that the leakage amount of the seal becomes small, or the seal does not leak any more.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical pipeline pumps, in particular to a new vertical pipeline pump. Background Art

[0002] Vertical pipeline pump is a common water pump. Its main feature is vertical installation. It is suitable for conveying liquids containing particulate impurities and is widely used in the petrochemical industry.

[0003] For vertical pipeline pumps with an intermediate coupling between the motor and the pump, seal leakage may occur during use due to changes in seal compression or other reasons. The leaked water will enter the leakage chamber, which is connected to a leakage pipe. The water will flow out of the chamber along the leakage pipe. However, when the hole in the leakage chamber is blocked or the leakage is large, the lower end cover of the bearing box is close to the leakage chamber, and the leaked water will enter the bearing box along the shaft, causing the lubricating grease to emulsify, thereby causing damage to the bearing. The bearing and seal can only be replaced, which greatly increases the maintenance workload of maintenance personnel and increases the maintenance cost. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the utility model provides a new vertical pipeline pump, which includes:

[0005] The pump shaft, the upper end of which is connected to a half coupling, and the lower end of which passes through the bearing housing;

[0006] The lower end of the pump shaft is connected to an impeller, which is fastened to the pump shaft via a back cap nut;

[0007] The upper part of the impeller contacts the lower part of the dynamic ring spring, and the upper part of the dynamic ring spring is connected to the dynamic ring sealing rubber ring; a sealing dynamic ring is arranged inside the dynamic ring sealing rubber ring, and the sealing dynamic ring contacts and cooperates with the sealing static ring;

[0008] The outer ring of the sealing static ring is provided with a static ring sealing ring, and the outer side of the static ring sealing ring contacts the lower part of the adjusting pad;

[0009] An upper rolling bearing and a lower rolling bearing are arranged inside the bearing box, and the upper rolling bearing and the lower rolling bearing are respectively assembled on the pump shaft;

[0010] An upper bearing box pressure cover is arranged on the upper part of the bearing box body, and a lower bearing box pressure cover is arranged on the lower part of the bearing box body.

[0011] In a preferred solution, the lower bearing box gland is provided with two connecting rods, and the lower ends of the connecting rods are connected to the pump cover.

[0012] In a preferred solution, the adjustment pad is installed in the pump cover and fits against the inner wall of the pump cover, and the adjustment pad is made of rubber.

[0013] In a preferred solution, the pump cover is threaded with a left adjusting bolt and a right adjusting bolt, and the lower ends of the left adjusting bolt and the right adjusting bolt are in contact with an adjusting pad.

[0014] The beneficial effects achieved by the utility model are:

[0015] First, during the use of the utility model, when the seal leaks, the leaked water will not enter the bearing box to cause damage to the bearing. When the seal leaks slightly, the compression of the seal can be adjusted by adjusting the adjusting bolt, so that the seal leakage becomes smaller or the seal no longer leaks.

[0016] Second, the lower bearing box gland is provided with two connecting rods, the lower ends of which are connected to the pump cover. The connecting rods separate the bearing box from the pump cover, so that leaked water cannot enter the bearing box, thus avoiding damage to the bearing and reducing maintenance costs.

[0017] Third, the pump cover is screwed with a left adjusting bolt and a right adjusting bolt, and the lower ends of the left adjusting bolt and the right adjusting bolt are in contact with the adjusting gasket. When the seal compression is large during assembly, the compression is within a reasonable range by loosening the left adjusting bolt and the right adjusting bolt. When the seal leaks, the left adjusting bolt and the right adjusting bolt are tightened at the same time to push the adjusting gasket downward, thereby driving the sealing static ring downward to increase the seal compression, thereby reducing the seal leakage or stopping leakage.

[0018] Fourth, the adjustment pad is installed in the pump cover, fits with the inner wall of the pump cover sealing cavity, and can move up and down in the sealing cavity. The adjustment pad is made of rubber material and can further play a sealing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is the front view of the utility model;

[0021] Figure 3 for Figure 2 Sectional view at AA;

[0022] Figure 4 for Figure 3 The enlarged structural diagram at B in FIG.

[0023] Numbers in the figure:

[0024] 1. Pump shaft; 2. Half coupling; 3. Bearing box; 301. Upper rolling bearing; 302. Lower rolling bearing; 303. Upper bearing box gland; 304. Lower bearing box gland; 4. Connecting rod; 5. Pump cover; 6. Left adjusting bolt; 7. Right adjusting bolt; 8. Adjusting pad; 9. Sealing static ring; 901. Static ring sealing ring; 10. Sealing dynamic ring; 1001. Dynamic ring sealing rubber ring; 1002. Dynamic ring spring; 11. Impeller; 12. Back cap nut. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the utility model is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0026] Reference Figure 1-Figure 4 The utility model provides a novel vertical pipeline pump, including a pump shaft 1, wherein the upper end of the pump shaft 1 is connected with a half coupling 2, and the lower end of the pump shaft 1 passes through a bearing box 3, wherein an upper rolling bearing 301 and a lower rolling bearing 302 are arranged inside the bearing box 3, and the upper rolling bearing 301 and the lower rolling bearing 302 are respectively assembled on the pump shaft 1.

[0027] An upper bearing box pressure cover 303 is arranged on the upper part of the bearing box body 3, and a lower bearing box pressure cover 304 is arranged on the lower part of the bearing box body 3. The lower end of the pump shaft 1 is connected with an impeller 11, and the impeller 11 is fastened to the pump shaft 1 by a back cap nut 12. The upper part of the impeller 11 is in contact with the lower part of the dynamic ring spring 1002, and the upper part of the dynamic ring spring 1002 is connected to the dynamic ring sealing rubber ring 1001. A sealing dynamic ring 10 is arranged inside the dynamic ring sealing rubber ring 1001, and the sealing dynamic ring 10 is in contact and cooperate with the sealing static ring 9. The outer ring of the sealing static ring 9 is provided with a static ring sealing ring 901, and the outer side of the static ring sealing ring 901 is in contact with the lower part of the adjusting pad 8.

[0028] The lower bearing box gland 304 is provided with two connecting rods 4, and the lower ends of the connecting rods 4 are connected to the pump cover 5. The bearing box and the pump cover 5 are separated by the connecting rods 4, so that the leaked water cannot enter the bearing box, thus avoiding damage to the bearing and reducing maintenance costs.

[0029] The pump cover 5 is screwed with a left adjusting bolt 6 and a right adjusting bolt 7, the lower ends of which are in contact with an adjusting pad 8. When the seal compression is large during assembly, the compression is adjusted to a reasonable range by loosening the left adjusting bolt 6 and the right adjusting bolt 7. When the seal leaks, the left adjusting bolt 6 and the right adjusting bolt 7 are tightened at the same time to push the adjusting pad 8 downward, thereby driving the sealing static ring 9 downward to increase the seal compression, thereby reducing the seal leakage or stopping leakage.

[0030] The adjustment pad 8 is installed in the pump cover 5, fits with the inner wall of the sealing cavity of the pump cover 5, and can move up and down in the sealing cavity. The adjustment pad 8 is made of rubber material and can further play a sealing role.

[0031] In this solution, when the seal leaks, the leaked water will not enter the bearing box to cause damage to the bearing. When the seal leaks, the left adjustment bolt 6 and the right adjustment bolt 7 can be tightened at the same time to adjust the compression of the seal until the seal no longer leaks. This solution greatly reduces maintenance tasks and reduces maintenance costs.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new vertical pipeline pump, characterized in that: It includes: A pump shaft (1), the upper end of the pump shaft (1) is connected to a half coupling (2), and the lower end of the pump shaft (1) passes through a bearing housing (3); The lower end of the pump shaft (1) is connected to an impeller (11), and the impeller (11) is fastened to the pump shaft (1) via a back nut nut (12); The upper part of the impeller (11) is in contact with the lower part of the dynamic ring spring (1002), and the upper part of the dynamic ring spring (1002) is connected to the dynamic ring sealing rubber ring (1001); a sealing dynamic ring (10) is arranged inside the dynamic ring sealing rubber ring (1001), and the sealing dynamic ring (10) is in contact with the sealing static ring (9); The outer ring of the sealing static ring (9) is provided with a static ring sealing ring (901), and the outer side of the static ring sealing ring (901) is in contact with the lower part of the adjustment pad (8); An upper rolling bearing (301) and a lower rolling bearing (302) are arranged inside the bearing housing (3), and the upper rolling bearing (301) and the lower rolling bearing (302) are respectively assembled on the pump shaft (1); An upper bearing box pressure cover (303) is arranged on the upper part of the bearing box body (3), and a lower bearing box pressure cover (304) is arranged on the lower part of the bearing box body (3).

2. A novel vertical pipeline pump according to claim 1, characterized in that: The lower bearing box gland (304) is provided with two connecting rods (4), and the lower ends of the connecting rods (4) are connected to a pump cover (5).

3. A novel vertical pipeline pump according to claim 2, characterized in that: The adjustment pad (8) is installed in the pump cover (5) and fits the inner wall of the pump cover (5); the adjustment pad (8) is made of rubber.

4. A novel vertical pipeline pump according to claim 2, characterized in that: The pump cover (5) is threadedly connected with a left adjusting bolt (6) and a right adjusting bolt (7), and the lower ends of the left adjusting bolt (6) and the right adjusting bolt (7) are in contact with an adjusting pad (8).

Images