Efficient axially split pump device with water-cooled grease lubricated bearing

Abstract

The invention relates to the technical field of liquid pumps, in particular to a water-cooling grease-lubricated bearing efficient axially split pump device which comprises a pump shell, an axially split face, bearing grooves, an outer cover, mounting grooves and rubber strips, the two bearing grooves are formed in the axially split face of an opening of the pump shell, the two mounting grooves are formed in the axially split face, the ends of the mounting grooves are communicated with the bearing grooves, and the rubber strips are arranged on the outer cover. The middle opening face is in contact fit with a second middle opening face of the outer cover, the pump shell is connected with the outer cover through a bolt, the bottom of a rubber strip is inserted into the mounting groove, and a second mounting groove formed in the second middle opening face is in inserted fit with the top of the rubber strip. And after the locking mechanism is inserted into the middle opening surface, the side part of the rubber strip is extruded, so that the stability of the rubber strip and the sealing property after the outer cover is mounted on the pump shell are improved.

Description

Technical Field

[0001] This invention relates to the field of liquid pump technology, and in particular to a high-efficiency split-case pump device for water-cooled grease-lubricated bearings. Background Technology

[0002] Split-case pumps, also known as split-case centrifugal pumps, are a special type of centrifugal pump. Their main characteristic is that the impeller outlet is located in the middle of the pump shaft, rather than at one end as in traditional centrifugal pumps. This design gives split-case pumps unique structural advantages, making them primarily used in industrial applications requiring high flow rates and high heads.

[0003] However, existing technologies still have shortcomings. For example, a split-case pump with patent number CN201120562588.1 includes a pump body, a pump cover, a pump shaft, an impeller mounted on the pump shaft, and two bushings located at the two ends of the impeller shaft. The end of the bushing connected to the impeller is provided with a sleeve section, and the two ends of the impeller are respectively sleeved on the sleeve section of one bushing. A first sealing ring is provided between the sleeve section and the impeller. This device lacks a locking mechanism for the sealing ring or sealing strip, which can easily lead to the sealing ring or sealing strip loosening, resulting in extremely serious leakage during operation. Summary of the Invention

[0004] This invention provides a high-efficiency split-case pump device for water-cooled grease lubrication of bearings, which solves the problems mentioned in the background art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a high-efficiency split-case pump device for water-cooled grease lubrication of bearings, comprising: a pump housing, a split surface, bearing grooves, an outer cover, a mounting groove, and a rubber strip. Two bearing grooves are formed on the split surface of the pump housing opening, and two mounting grooves are formed on the split surface. The ends of the mounting grooves communicate with the bearing grooves. The split surface contacts and engages with the second split surface of the outer cover. The pump housing and the outer cover are connected by bolts. The bottom of the rubber strip is inserted into the mounting groove. The second mounting groove on the second split surface engages with the top of the rubber strip. The side of the rubber strip engages with a locking mechanism inserted into the split surface.

[0006] Preferably, the bearing groove mates with the bearing groove on the second open face to install the bearing. The end of the bearing groove is connected to the end of the mounting groove. Two bearings are mounted on a rotating shaft, on which pump blades are mounted. The pump blades are positioned between the inlet and outlet. The inlet and outlet are respectively located on both sides of the pump casing. The end of the rotating shaft away from the pump casing is connected to the output end of the motor. The motor is mounted on the motor frame of the pump casing. The end of the rubber strip contacts and mates with the side of the bearing.

[0007] Preferably, the mounting groove has multiple smooth bends along its length.

[0008] Preferably, the locking mechanism includes: a locking rubber strip, a plurality of locking grooves are formed on the open surface, the end of the locking groove is connected to the side of the mounting groove, the other end of the locking groove is bent, the bottom of the locking rubber strip is inserted into the locking groove, and the end of the locking rubber strip is pressed and engaged with the side of the rubber strip.

[0009] Preferably, the second opening has a second locking groove, which is inserted into the top of the locking rubber strip.

[0010] Preferably, two heat dissipation grooves are formed on the second open surface, and two heat dissipation grooves are formed on the second open surface. The heat dissipation grooves and their opposite heat dissipation grooves form a heat dissipation cavity. The heat dissipation cavity is connected to the adjacent bearing groove. A cold water pipe is connected to the side of the pump casing and is located below the heat dissipation cavity.

[0011] Preferably, the outer cover is provided with two sets of heat dissipation fins, and each set of heat dissipation fins is disposed above a heat dissipation cavity.

[0012] Preferably, the split surface has two pipe mounting slots, and the end of each pipe mounting slot away from the pump blade is connected to a heat dissipation cavity. The split surface has a second pipe mounting slot, which cooperates with the opposite pipe mounting slot to fix the mounting pipe. The inner wall of the mounting pipe is rotatably engaged with the side wall of the rotating shaft.

[0013] Preferably, the outer cover has two through mounting holes, the bottom of each mounting hole is connected to a pipe mounting groove, the bottom end of a pressure pipe is inserted into the mounting hole, and the top end of the pressure pipe is inserted into the mounting hole, with the mounting hole being through the outer cover.

[0014] Preferably, the pressure pipe is equipped with a pressure gauge and a flow valve.

[0015] The beneficial effects of this invention are as follows:

[0016] In the solution of this invention:

[0017] By setting a rubber strip, the upper and lower parts of the rubber strip are respectively inserted into the mounting groove and the mounting groove 2. After the locking mechanism is inserted into the split surface, it squeezes the side of the rubber strip, which increases the stability of the rubber strip and the sealing performance after the outer cover is installed on the pump casing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the location of the center section of the present invention;

[0019] Figure 2 This is a cross-sectional view of the main structure of the present invention.

[0020] The components include: pump casing 1, split surface 2, bearing groove outer cover 3, mounting groove rubber strip 4, rotating shaft 5, locking rubber strip 6, heat dissipation groove 7, heat dissipation fins 8, mounting pipe 9, pressure pipe 10, pressure gauge 11, and flow valve 12. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] Example 1: Reference Figures 1-2 A high-efficiency split-case pump device for water-cooled grease lubrication of bearings includes: a pump housing 1, a split surface 2, bearing grooves, an outer cover 3, a mounting groove, and a rubber strip 4. The split surface 2 of the pump housing 1 has two bearing grooves and two mounting grooves. The ends of the mounting grooves are connected to the bearing grooves. The split surface 2 is in contact with the second split surface of the outer cover 3. The pump housing 1 and the outer cover 3 are connected by bolts. The bottom of the rubber strip 4 is inserted into the mounting groove. The second mounting groove on the second split surface is inserted into the top of the rubber strip 4. The side of the rubber strip 4 is pressed into the locking mechanism inserted into the split surface 2.

[0023] The principles and beneficial effects of the above scheme are as follows:

[0024] Two mounting grooves are provided on the open side 2 of the pump casing 1. The rubber strip 4 is installed in the mounting grooves. The top of the rubber strip 4 is inserted into the mounting groove 2 on the open side 2 of the outer cover 3 to complete the sealing of the pump body. At the same time, the contact and cooperation between the open side 2 and the open side 2 further increases the sealing effect of the device. The pump casing 1 and the outer cover 3 are connected by bolts to prevent water leakage during pump operation. The bearing groove provides space for bearing installation. By setting the rubber strip 4, the upper and lower parts of the rubber strip 4 are inserted into the mounting groove and the second mounting groove respectively. After the locking mechanism is inserted on the open side 2, it squeezes the side of the rubber strip 4, which increases the stability of the rubber strip 4 and the sealing performance of the outer cover 3 after it is installed on the pump casing 1. This further improves the efficiency of installation and disassembly between the pump casing 1 and the outer cover 3, reduces the difficulty of device maintenance and repair, and enables the device to work efficiently and stably.

[0025] Example 2: Reference Figures 1-2 The bearing groove mates with the bearing groove on the second open face to install the bearing. The end of the bearing groove is connected to the end of the mounting groove. The two bearings are mounted on the rotating shaft 5. The rotating shaft 5 is equipped with pump blades, which are located between the inlet and outlet. The inlet and outlet are respectively located on both sides of the pump housing 1. The end of the rotating shaft 5 away from the pump housing 1 is connected to the output end of the motor. The motor is mounted on the motor frame of the pump housing 1. The end of the rubber strip 4 contacts and mates with the side of the bearing.

[0026] The principles and beneficial effects of the above scheme are as follows:

[0027] The bearing slot and bearing slot 2 are used to install the bearing, which improves the stability of the rotating shaft 5 when driven by the motor, ensuring that the pump blades can run stably within the device. The motor frame provides a position for the motor installation. In addition, since the end of the mounting slot is connected to the bearing slot, and the end of bearing slot 2 is connected to the end of mounting slot 2, after the installation of the rubber strip 4 is completed without affecting the accuracy of the bearing installation, a certain length of the end of the rubber strip 4 can be placed in the bearing slot or bearing slot 2. After the bearing is installed, the end of the rubber strip 4 is snapped into the bearing slot or bearing slot 2, which can play an auxiliary role in fixing the rubber strip 4. The rubber strip 4 may loosen during the operation of the device, which greatly increases the sealing and safety of the device. Since the rotation of the rotating shaft 5 installed in the bearing generates heat, the heat of the bearing can be transferred to the rubber strip 4, causing it to expand, further increasing the sealing effect of the rubber strip 4 on the device.

[0028] Example 3: Reference Figures 1-2 The mounting groove has multiple smooth bends along its length.

[0029] The principles and beneficial effects of the above scheme are as follows:

[0030] The multiple smooth bends on the mounting groove allow the rubber strip 4 to bend synchronously after installation, preventing it from shifting during operation and improving the rationality of the device design. Furthermore, after operation, the heat of the device can be transferred to the rubber strip 4, and the expansion of the rubber strip 4 and its mating mounting groove can further enhance the sealing effect of the rubber strip 4 between the pump housing 1 and the outer cover 3.

[0031] Example 4: Reference Figures 1-2 The locking mechanism includes a locking rubber strip 6, a plurality of locking grooves are provided on the open surface 2, the end of the locking groove is connected to the side of the mounting groove, the other end of the locking groove is bent, the bottom of the locking rubber strip 6 is inserted into the locking groove, and the end of the locking rubber strip 6 is pressed and engaged with the side of the rubber strip 4.

[0032] The principles and beneficial effects of the above scheme are as follows:

[0033] The compression fit between the locking rubber strip 6 and the side of the rubber strip 4 can further improve the stability of the rubber strip 4 after installation. In particular, when the rubber strip 4 is working under conditions of extreme temperature changes, it can further prevent the movement caused by thermal expansion and contraction of the rubber strip 4. The other end of the locking groove is provided with a bend, which can prevent the locking rubber strip 6 from moving.

[0034] Example 5: Reference Figures 1-2The second opening has a locking groove, which is inserted into the top of the locking rubber strip 6.

[0035] The principles and beneficial effects of the above scheme are as follows:

[0036] The locking groove and the second locking groove cooperate with each other to install the locking rubber strip 6, which further improves the stability of the locking rubber strip 6 after installation.

[0037] Example 6: Reference Figures 1-2 Two heat dissipation slots 7 are opened on the middle opening 2, and two heat dissipation slots 2 are opened on the middle opening 2. The heat dissipation slots 7 and their opposite heat dissipation slots 2 form a heat dissipation cavity. The heat dissipation cavity is connected to the adjacent bearing slot. A cold water pipe is connected to the side of the pump housing 1 and is located below the heat dissipation cavity.

[0038] The principles and beneficial effects of the above scheme are as follows:

[0039] The heat dissipation chamber absorbs the heat generated by the bearing during operation, while the cold water pipe connected to the side of the pump casing 1 absorbs the heat. The cold water flowing in the cold water pipe carries away the absorbed heat, ensuring that the lubricating oil or grease applied inside the bearing is not consumed rapidly during operation. The installation of the cold water pipe further improves the cooling efficiency of the lubricating oil or grease when the device is using high-power bearings, greatly improving the practicality of the device and its adaptability to different working conditions.

[0040] Example 7: Reference Figures 1-2 The outer cover 3 is provided with two sets of heat dissipation fins 8, and each set of heat dissipation fins 8 is located above a heat dissipation cavity.

[0041] The principles and beneficial effects of the above scheme are as follows:

[0042] When the temperature absorbed by the cold water in the cold water pipe reaches the upper limit, the water begins to boil. To prevent the efficiency of the mechanism in absorbing temperature from decreasing, heat dissipation can be achieved through the heat dissipation fins 8. Since the heat dissipation fins 8 are symmetrically arranged with the cold water pipe, the device's ability to absorb and dissipate heat is improved.

[0043] Example 8: Reference Figures 1-2 The open face 2 has two pipe mounting slots. The end of each pipe mounting slot away from the pump blade is connected to a heat dissipation cavity. The open face 2 has a second pipe mounting slot. The pipe mounting slot and its opposite second pipe mounting slot cooperate to fix the mounting pipe 9. The inner wall of the mounting pipe 9 is rotatably engaged with the side wall of the rotating shaft 5.

[0044] The principles and beneficial effects of the above scheme are as follows:

[0045] The pipe mounting groove and the second pipe mounting groove provide space for the installation of the mounting pipe 9. The mounting pipe 9 rotates with the rotating shaft 5, which increases the stability when rotating with the rotating shaft 5.

[0046] Example 9: Reference Figures 1-2 The outer cover 3 has two through mounting holes. The bottom of each mounting hole is connected to a pipe mounting groove 2. The bottom end of the pressure pipe 10 is inserted into the mounting hole, and the top end of the pressure pipe 10 is inserted into the mounting hole 2. The mounting hole 2 is through the outer cover 3.

[0047] The principles and beneficial effects of the above scheme are as follows:

[0048] When the device is in operation, some of the water inside the outer cover 3 flows through the pressure pipe 10 to the side of the mounting pipe 9, applying pressure to the mounting pipe 9 and further improving the stability of the mounting pipe 9 and the rotating shaft 5 during operation. Since there is water inside the pressure pipe 10, the water inside the pressure pipe 10 can absorb the vibration of the rotating shaft 5 during operation to a certain extent, improving the safety of the device during operation. The water inside the pressure pipe 10 can also absorb the heat of the rotating shaft 5 during operation to a certain extent through the mounting pipe 9, preventing it from deforming, preventing the pump blades from rubbing against the inner wall of the pump, and protecting the inner wall of the pump.

[0049] Example 10: Reference Figures 1-2 The pressure pipe 10 is equipped with a pressure gauge 11 and a flow valve 12.

[0050] The principles and beneficial effects of the above scheme are as follows:

[0051] The pressure gauge 11 can be used to observe the actual pressure of the device during operation, whether the auxiliary monitoring device is in a safe working state, and to determine whether the pressure of the water in the pressure pipe 10 applied to the installation pipe 9 is within a safe range. When the pressure is too high, the flow valve 12 can be adjusted to appropriately increase or decrease the water pressure applied to the installation pipe 9.

[0052] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A high-efficiency split-case pump device for water-cooled grease lubrication of bearings, characterized in that, include: The pump housing (1) has two bearing grooves on the open surface (2) of the pump housing (1) and two mounting grooves on the open surface (2). The end of the mounting groove is connected to the bearing groove. The open surface (2) is in contact with the open surface (2) of the outer cover (3). The pump housing (1) and the outer cover (3) are connected by bolts. The bottom of the rubber strip (4) is inserted in the mounting groove. The mounting groove (2) on the open surface (2) is inserted into the top of the rubber strip (4). The side of the rubber strip (4) is pressed into the locking mechanism inserted on the open surface (2).

2. The high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 1, characterized in that, The bearing groove is fitted with the bearing groove on the second open face to install the bearing. The bearing groove is connected to the end of the mounting groove. The two bearings are mounted on the rotating shaft (5). The rotating shaft (5) is equipped with pump blades. The pump blades are located between the inlet and outlet. The inlet and outlet are respectively located on both sides of the pump casing (1). The end of the rotating shaft (5) away from the pump casing (1) is connected to the output end of the motor. The motor is mounted on the motor frame of the pump casing (1). The end of the rubber strip (4) is in contact with the side of the bearing.

3. The high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 1, characterized in that, The mounting groove has multiple smooth bends along its length.

4. The high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 3, characterized in that, The locking mechanism includes a locking rubber strip (6), a plurality of locking grooves are opened on the open surface (2), the end of the locking groove is connected to the side of the mounting groove, the other end of the locking groove is bent, the bottom of the locking rubber strip (6) is inserted into the locking groove, and the end of the locking rubber strip (6) is pressed and engaged with the side of the rubber strip (4).

5. The high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 4, characterized in that, The second opening has a locking groove, which is inserted into the top of the locking rubber strip (6).

6. The high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 5, characterized in that, Two heat dissipation slots (7) are opened on the middle opening (2), and two heat dissipation slots (2) are opened on the middle opening (2). The heat dissipation slots (7) and their opposite heat dissipation slots (2) form a heat dissipation cavity. The heat dissipation cavity is connected to the adjacent bearing slot. A cold water pipe is connected to the side of the pump casing (1). The cold water pipe is located below the heat dissipation cavity.

7. The high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 6, characterized in that, The outer cover (3) is provided with two sets of heat dissipation fins (8), and each set of heat dissipation fins (8) is located above a heat dissipation cavity.

8. The high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 7, characterized in that, Two pipe mounting slots are opened on the open surface (2). The end of each pipe mounting slot away from the pump blade is connected to a heat dissipation cavity. A second pipe mounting slot is opened on the open surface. The pipe mounting slot and its opposite pipe mounting slot cooperate to fix the mounting pipe (9). The inner wall of the mounting pipe (9) is rotated with the side wall of the rotating shaft (5).

9. A high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 8, characterized in that, The outer cover (3) has two through mounting holes. The bottom of each mounting hole is connected to a pipe mounting groove. The bottom end of a pressure pipe (10) is inserted into the mounting hole. The top end of the pressure pipe (10) is inserted into the mounting hole. The mounting hole is through the outer cover (3).

10. A high-efficiency split-case pump device for water-cooled grease lubrication of bearings according to claim 9, characterized in that, The pressure pipe (10) is equipped with a pressure gauge (11) and a flow valve (12).

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