Submerged chemical pump with novel structure

Abstract

The utility model belongs to the technical field of chemical pumps, and provides a novel-structure submerged chemical pump which comprises a motor support, an upper bearing seat is fixedly arranged on the motor support through bolts, a placing disc is fixedly arranged on the upper bearing seat through bolts, a first supporting cylinder is fixedly arranged on the upper bearing seat, and a second supporting cylinder is fixedly arranged on the lower bearing seat. A supporting cylinder II is fixedly arranged on the supporting cylinder I; the second supporting cylinder is communicated with an oil chamber, the oil chamber is fixedly provided with a fourth bearing, the fourth bearing is fixedly provided with a base, the fourth bearing is communicated with a framework oil seal part, and the framework oil seal part is matched with a clamp and is fixedly arranged on the placing disc through a bolt. The deep groove ball bearing is provided with lubricating grease and does not need to be replaced in a certain service cycle, lubricating thin oil can be added into the supporting cylinder to enable the deep groove ball bearing to be used for a long time, the mechanical seal is arranged on the lower portion to isolate external media, the framework oil seal is arranged to block solid particles in the media, and therefore the service cycle of the mechanical seal is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chemical industry pump technical field, concretely is a new structure under the liquid chemical industry pump. BACKGROUND

[0002] Chemical industry pump is the product under the special requirement of chemical production to pump, only can be called chemical industry pump to meet the following requirements: can meet the requirement of chemical industry process, high temperature resistance and low temperature resistance, corrosion resistance, wear resistance and reliable operation, concretely, chemical industry pump is a kind of equipment that liquid or gas is transported from low pressure area to high pressure area by mechanical movement transmission energy;

[0003] However, the intermediate guide bearing and the lower guide bearing of the structure of the existing chemical industry pump are basically flexible wear-resistant material, in the use process, when the impeller wear or damage does not reach the balance amount of design requirement, it will lead to the radial runout and vibration of the rotating shaft, thereby accelerating the wear of guide bearing;

[0004] At the same time, the structure of the existing chemical industry pump is lubricated by medium through the guide pipe into the guide bearing and the shaft, once solid particles enter the guide bearing and the shaft with medium, it will also lead to the accelerated wear of guide bearing, when the guide bearing wears too much, it will lead to the radial runout of the rotating shaft, causes the abnormal wear of impeller and loses balance, thereby vicious cycle, finally leads to the overall damage.

[0005] Therefore, the person skilled in the art proposes a new structure under the liquid chemical industry pump to solve the problems in the background art. CONTENT OF UTILITY MODEL

[0006] In order to solve the above technical problems, the utility model provides a new structure under the liquid chemical industry pump to solve the problems, such as easy wear of guide bearing and impeller in the prior art.

[0007] A new structure under the liquid chemical industry pump, it includes: motor support, the motor support is provided with upper bearing seat by bolt fixing, the upper bearing seat is provided with disc by bolt fixing, and the upper bearing seat is fixedly provided with support cylinder one, and the support cylinder one is fixedly provided with support cylinder two;The support cylinder two is connected with oil chamber, the oil chamber is fixedly provided with bearing four, the bearing four is fixedly provided with base, and the bearing four is connected with skeleton oil seal piece, the skeleton oil seal piece is fixed on the disc by bolt fixing through the cooperation of clamp, and the oil chamber end is fixedly provided with outlet flange.

[0008] Preferably, the motor support is fixedly provided with motor, the motor is fixedly provided with No. 1 shaft through electric coupling and pump coupling, and plum blossom pad is arranged between the electric coupling and the pump coupling;The upper bearing seat is provided with bearing one.

[0009] Preferably, a second shaft is fixedly mounted on the first shaft via a bushing, a retaining sleeve, and a key; a second bearing is disposed between the first and second support cylinders; a third bearing is disposed at the top of the oil chamber; and a mechanical seal is disposed within the oil chamber.

[0010] Preferably, the oil chamber is sealed by an inner pump cover, and a water outlet pipe is fixedly installed on the outside of the inner pump cover.

[0011] Preferably, the bearing is disposed between the mechanical seal and the impeller, the impeller inlet end is installed in the pump casing and is secured with a nut; a base is provided below the impeller and a flat key is provided inside the impeller.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model uses a deep groove ball bearing instead of a flexible bushing, so that the supporting force of the deep groove ball bearing not only exceeds that of the flexible shaft, but also does not require external liquid for lubrication and cooling. Since the deep groove ball bearing has its own lubricating grease, it does not need to be replaced within a certain service life. At the same time, lubricating thin oil can be added to the support cylinder to keep it in use for a long time. In addition, there is a mechanical seal at the bottom to isolate the external medium, and a skeleton oil seal to block solid particles in the medium, thereby increasing the service life of the mechanical seal.

[0014] 2. By changing the water inlet position of the impeller, this utility model creates a negative pressure outside the mechanical seal when the pump is working, reducing the external pressure of the mechanical seal and correspondingly increasing its service life. At the same time, the impeller has suction in the inlet direction when running, which is a certain upward thrust, offsetting part of the downward force on the pump shaft, thereby reducing the axial force of the deep groove ball bearing, making the bearing more durable and with a longer service life. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the chemical pump of this utility model;

[0016] Figure 2 This is a connection structure diagram of the motor bracket of this utility model;

[0017] Figure 3 This is a structural diagram of the bushing connection of this utility model;

[0018] Figure 4 This is a diagram showing the bearing and impeller connection structure of this utility model.

[0019] In the picture:

[0020] 1. Motor bracket; 2. Bearing 1; 3. Upper bearing seat; 4. Plate; 5. Support cylinder 1; 6. Shaft No. 1; 7. Shaft sleeve; 8. Compression sleeve; 9. Shaft key; 10. Bearing 2; 11. Support cylinder 2; 12. Shaft No. 2; 13. Bearing 3; 14. Oil chamber; 15. Mechanical seal; 16. Inner pump cover; 17. Bearing 4; 18. Pump casing; 19. Impeller; 20. Base; 21. Nut; 22. Flat key; 23. Water outlet pipe; 24. Skeleton oil seal; 25. Clamp; 26. Outlet flange; 27. Pump coupling; 28. Plum blossom gasket; 29. ​​Electric coupling; 30. Motor. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] Example 1:

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a novel submersible chemical pump, comprising: a motor bracket 1, an upper bearing seat 3 fixedly mounted on the motor bracket 1 by bolts, a discharge plate 4 fixedly mounted on the upper bearing seat 3 by bolts, a first support cylinder 5 fixedly mounted on the upper bearing seat 3, a second support cylinder 11 fixedly mounted on the first support cylinder 5, an oil chamber 14 connected to the second support cylinder 11, a fourth bearing 17 fixedly mounted on the oil chamber 14, a base 20 fixedly mounted on the fourth bearing 17, and a skeleton oil seal 24 connected to the fourth bearing 17, the skeleton oil seal 24 being fixedly mounted on the discharge plate 4 by bolts in conjunction with a clamp 25, and an outlet flange 26 fixedly mounted at the end of the oil chamber 14; by connecting the fourth bearing 17 and the skeleton oil seal 24, clamping the skeleton oil seal 24 with the clamp 25, and finally fixing it to the discharge plate 4 by bolts, an integral pump structure is formed on the discharge plate 4.

[0025] refer to Figure 1 and Figure 2 A motor 30 is fixedly mounted on the motor bracket 1. A shaft 6 is fixedly mounted on the motor 30 via an electric coupling 29 and a pump coupling 27. A perforated pad 28 is placed between the electric coupling 29 and the pump coupling 27. A bearing 2 is mounted on the upper bearing seat 3. By placing the perforated pad 28 between the electric coupling 29 and the pump coupling 27, the purpose of buffering the electric coupling 29 and the pump coupling 27 during use is achieved. The bearing 2, placed on the upper bearing seat 3, can obtain the support force of the entire upper part of the shaft, making the entire device more stable during use and extending its service life.

[0026] Example 2:

[0027] refer to Figure 1 Shaft 6 is fixedly mounted with shaft 12 via bushing 7, sleeve 8 and key 9. Bearing 10 is installed between support cylinder 5 and support cylinder 11. This allows bearing 10 to be supported in the middle of the device during use. By placing mechanical seal 15 in oil chamber 14, the sealing effect of mechanical seal 15 can isolate the external medium, allowing bearing 10 and bearing 13 to have normal operating conditions and avoiding contact with the external medium.

[0028] refer to Figure 1 The top of the oil chamber 14 is equipped with a bearing 13, and the oil chamber 14 is equipped with a mechanical seal 15. The oil chamber 14 forms a sealed chamber through the inner pump cover 16, and the water outlet pipe 23 is fixedly installed outside the inner pump cover 16. By setting the mechanical seal 15 inside the oil chamber 14, the oil chamber 14 is sealed by the inner pump cover 16 and the water outlet pipe 23, thus achieving the purpose of isolating solid particles.

[0029] refer to Figure 1 Bearing 17 is positioned between mechanical seal 15 and impeller 19, allowing the shaft sleeve 7 to be adjusted in length to regulate the installation height of impeller 19. The material of shaft sleeve 7 can also be adjusted according to the medium. The inlet end of impeller 19 is installed inside pump casing 18 and secured with nut 21. A base 20 is located below impeller 19, and a flat key 22 is installed inside impeller 19. After mounting the base 20, liquid flows from the inlet of impeller 19, is pressurized through the flow channel, and then exits from the outlet of pump casing 18. Finally, it is connected to an external water pipe via skeleton oil seal 24 to complete the discharge process.

[0030] Meanwhile, during use, the skeleton oil seal 24 is fixed to the square plate so that the skeleton oil seal 24 will not vibrate due to water flow.

[0031] Working principle: A motor 30 is fixedly mounted on the motor bracket 1. A first shaft 6 is fixedly mounted on the motor 30 via an electric coupling 29 and a pump coupling 27. A perforated washer 28 is placed between the electric coupling 29 and the pump coupling 27. A bearing 2 is mounted on the upper bearing seat 3. By placing the perforated washer 28 between the electric coupling 29 and the pump coupling 27, a buffer is provided for their operation. The bearing 2, placed on the upper bearing seat 3, provides support to the upper part of the shaft, making the entire device more stable and extending its service life. Simultaneously, a second shaft 12 is fixedly mounted on the first shaft 6 via a bushing 7, a retaining sleeve 8, and a key 9. A bearing 10 is placed between support cylinder 5 and support cylinder 11. This allows the bearing 10 to receive support in the middle of the entire device during operation. Mechanical seal 15 is placed inside oil chamber 14, which isolates the external medium, allowing bearings 10 and 13 to operate normally and preventing them from being affected by contact with the external medium. Bearing 17 is positioned between mechanical seal 15 and impeller 19, allowing the shaft sleeve 7 to be adjusted in length to regulate the installation height of impeller 19. The material of shaft sleeve 7 can also be adjusted according to the medium. The inlet end of impeller 19 is installed inside pump casing 18 and secured with nut 21. A base 20 is located below impeller 19, and a flat key 22 is installed inside impeller 19. After mounting the base 20, liquid flows from the impeller 19 inlet, is pressurized through the flow channel, and then exits from the pump casing 18 outlet. Finally, it is connected to an external water pipe via the skeleton oil seal 24 to complete the discharge process.

[0032] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

[0033] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0034] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel submersible chemical pump, characterized in that, include: Motor bracket (1), the motor bracket (1) is fixed with an upper bearing seat (3) by bolts, the upper bearing seat (3) is fixed with a plate (4) by bolts, and the upper bearing seat (3) is fixed with a support cylinder one (5), and the support cylinder one (5) is fixed with a support cylinder two (11); The second support cylinder (11) is connected to an oil chamber (14), the oil chamber (14) is fixedly equipped with a bearing (17), the bearing (17) is fixedly equipped with a base (20), and the bearing (17) is connected to a skeleton oil seal (24). The skeleton oil seal (24) is fixedly mounted on the release plate (4) with a clamp (25) by bolts. The end of the oil chamber (14) is fixedly equipped with an outlet flange (26).

2. The novel submersible chemical pump as described in claim 1, characterized in that: A motor (30) is fixedly mounted on the motor bracket (1). The motor (30) is fixedly mounted on a shaft (6) via an electric coupling (29) and a pump coupling (27). A perforated pad (28) is provided between the electric coupling (29) and the pump coupling (27). The upper bearing housing (3) is provided with a bearing (2).

3. The novel submersible chemical pump as described in claim 2, characterized in that: The first shaft (6) is fixedly provided with the second shaft (12) by the bushing (7), the sleeve (8) and the shaft key (9), and the second bearing (10) is provided between the first support cylinder (5) and the second support cylinder (11); The top of the oil chamber (14) is provided with a bearing three (13), and the oil chamber (14) is provided with a mechanical seal (15).

4. The novel submersible chemical pump as described in claim 3, characterized in that: The oil chamber (14) forms a sealed chamber through the inner pump cover (16), and a water outlet pipe (23) is fixedly installed on the outside of the inner pump cover (16).

5. The novel submersible chemical pump as described in claim 4, characterized in that: The bearing four (17) is disposed between the mechanical seal (15) and the impeller (19). The inlet end of the impeller (19) is installed in the pump casing (18) and is secured with a nut (21). A base (20) is provided below the impeller (19), and a flat key (22) is provided inside the impeller (19).

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