Lime slurry pump
By designing a position adjustment structure in the lime mortar pump and adjusting the main shaft position to ensure that the impeller is located in the center of the inner pump housing, the problem of poor pumping effect of the existing lime mortar pump is solved and the stability of normal pumping and bearings is achieved.
Patent Information
- Application Number
- CN202422560566.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing lime mortar pumps are difficult to ensure that the impeller is located in the center of the inner pump housing, which affects the pumping effect.
A lime mortar pump is designed, including a spindle, a bearing box, a coupling, a pump body and a position adjustment structure. The spindle position is adjusted through the first and second adjustment parts connected to the threaded structure to ensure that the impeller is located in the center of the inner pump housing.
It realizes normal pumping of lime mortar pump, with a compact structure and no additional lubrication system required, extending the service life of the bearing.
Smart Images
Figure CN223120177U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lime slurry pump, in particular to a lime slurry pump. Background Art
[0002] With the rapid development of waste incineration power generation, the flue gas treatment system of waste incineration power plants has become more mature and standardized in terms of design and management. In the flue gas deacidification process, a semi-dry deacidification system is generally adopted as the main deacidification process at present. The deacidification agent for existing flue gas deacidification treatment is lime slurry. After the lime slurry is atomized by an atomizer, it contacts with the flue gas in a spray tower, and an acid-base neutralization reaction occurs, so as to achieve the purpose of flue gas deacidification.
[0003] The lime slurry needs to be transported by a pulping system through a pipeline to a rotary atomizer. In this process, a lime slurry pump will be used. However, the existing lime slurry pump is difficult to ensure that the impeller is located at the center position of the inner pump shell, thus affecting the pumping effect. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the technical problem of poor pumping effect of the existing lime slurry pump, and provide a lime slurry pump.
[0005] The purpose of the utility model is realized through the following technical solutions:
[0006] A lime slurry pump includes a main shaft, a bearing box, a coupling, a pump body, and a position adjustment structure for adjusting the position of the main shaft;
[0007] One end of the main shaft is connected to the coupling, and the other end of the main shaft passes through the bearing box and is connected to the pump body;
[0008] Bearings are arranged in the bearing box, and a bearing cover for fixing the bearings is arranged on the end face of the bearing box. The main shaft passes through the bearings in the bearing box;
[0009] The position adjustment structure includes a first adjustment member and a second adjustment member coaxially connected to the main shaft through a threaded structure; the bearings are located between the first adjustment member and the second adjustment member; the first adjustment member is located in the inner cavity of the bearing box and close to the end of the pump body; the second adjustment member is located at the end of the bearing box close to the coupling, one end of the second adjustment member abuts against the bearing, and the other end of the second adjustment member extends outwards through the bearing cover.
[0010] In some embodiments, the bearing box includes an upper box body and a lower box body, and the upper box body is fixedly connected to the lower box body.
[0011] In some embodiments, an oil cavity for storing lubricating oil is arranged in the lower box body; an oil slinger for throwing the lubricating oil in the oil cavity is arranged on the main shaft;
[0012] In some embodiments, an oil sump, an oil supply hole, and an oil return hole for collecting the lubricating oil flung off by the oil ring are provided on the lower box body; an oil supply groove and an oil return groove are provided on the bearing cover; both ends of the oil supply hole are respectively communicated with the oil sump and the oil supply groove; both ends of the oil return hole are respectively communicated with the oil return groove and the oil cavity of the lower box body. Through the above structure, driven by the main shaft, the oil ring flings off the lubricating oil in the oil cavity, and part of the lubricating oil will fall into the oil sump, then the lubricating oil flows to the oil supply hole, and then flows out through the oil supply groove from the gap between the bearing cover and the bearing, so as to lubricate the bearing; then the lubricating oil flows to the oil return groove, and finally flows back to the oil cavity of the lower box body through the oil return hole. There is no need for an additional lubrication system, and the structure is compact.
[0013] In some embodiments, there are two groups of both the oil supply holes and the oil return holes, and two groups of both the oil supply grooves and the oil return grooves. The two groups of oil supply grooves and oil return grooves are respectively arranged on two bearing covers. In this way, two groups of bearings can be lubricated simultaneously.
[0014] In some embodiments, a cooling structure is provided at the position of the upper box body corresponding to the installed bearing. The cooling structure includes a cooling cavity, a bearing cooling water inlet, and a bearing cooling water outlet; the bearing cooling water inlet and the bearing cooling water outlet are respectively communicated with the cooling cavity. Through the above structure, cooling water can be introduced into the cooling cavity to cool the internal bearing and lubricating oil, which is beneficial to stabilizing the performance of the bearing, preventing the bearing from overheating, and prolonging the service life.
[0015] In some embodiments, there are two groups of the cooling structures; the two groups of cooling structures are connected in parallel or in series through pipelines.
[0016] In some embodiments, the lime slurry pump further includes a mechanical seal, and a seal cooling water inlet and a seal cooling water outlet are provided on the mechanical seal; the seal cooling water inlet is communicated with the cooling water circulation device; the seal cooling water outlet is communicated with the bearing cooling water inlet through a pipeline. In this way, after cooling the mechanical seal, the cooling water is then transported to the upper box body to cool the internal bearing and lubricating oil, and finally returns to the water tank.
[0017] In some embodiments, the lime slurry pump further includes a motor, and the motor is connected to a coupling.
[0018] In some embodiments, the pump body includes an outer pump shell, an inner pump shell, and an impeller; the outer pump shell is fixedly connected to the bearing housing; the inner pump shell is fixedly arranged inside the outer pump shell; the impeller is fixedly connected to the main shaft.
[0019] The beneficial effects of the present utility model compared with the prior art include:
[0020] A lime slurry pump proposed by the present utility model can adjust the position of the main shaft through a position adjustment structure. The position adjustment structure includes a first adjustment member and a second adjustment member coaxially connected to the main shaft through a threaded structure. The bearing is located between the first adjustment member and the second adjustment member. The first adjustment member is located in the inner cavity of the bearing housing and close to one end of the pump body, and the second adjustment member is located at one end of the bearing housing close to the coupling. Through the setting of technical features such as these, the position of the main shaft can be adjusted, thus ensuring the normal pumping of the lime slurry pump.
[0021] In addition, in some embodiments, there are also the following beneficial effects:
[0022] A lime slurry pump proposed by the present utility model can achieve the effect of a compact structure without an additional lubrication system through the setting of technical features such as an oil collecting groove, an oil delivery hole, an oil return hole, an oil delivery groove, and an oil return groove.
[0023] Other beneficial effects in the embodiments of the present utility model will be further described below. Description of the Drawings
[0024] Figure 1 It is a three-dimensional structure schematic diagram of the lime slurry pump in the embodiment of the present utility model.
[0025] Figure 2 It is a three-dimensional structure schematic diagram of the main shaft, bearing housing, and mechanical seal in the embodiment of the present utility model.
[0026] Figure 3 It is a three-dimensional structure schematic diagram of the main shaft, lower housing of the bearing housing, and mechanical seal in the embodiment of the present utility model.
[0027] Figure 4 It is a three-dimensional structure schematic diagram of the lower housing of the bearing housing and the bearing cover in the embodiment of the present utility model.
[0028] Figure 5 It is a three-dimensional structure schematic diagram of the bearing cover in the embodiment of the present utility model.
[0029] Figure 6 It is a sectional view of the upper housing of the bearing housing in the embodiment of the present utility model. Detailed Embodiments
[0030] In order to enable those skilled in the art to well understand the technical solutions of the present utility model, the present utility model will be further described below in conjunction with the embodiments and the drawings. However, the embodiments of the present utility model are not limited thereto.
[0031] See Figure 1-3, this embodiment provides a lime slurry pump for semi-dry acid removal in a waste power plant, which includes a motor 1, a coupling 2, a main shaft 3, a bearing box 4, a mechanical seal 5 and a pump body 6; the motor 1 is connected to the coupling 2, one end of the main shaft 3 is connected to the coupling 2, and the other end of the main shaft 3 passes through the bearing box 4 and is connected to the pump body 6. Two groups of bearings 7 are provided in the bearing box 4, and bearing covers 8 for fixing the bearings 7 are provided on both end faces of the bearing box 4.
[0032] Specifically, the lime slurry pump further includes a position adjustment structure for adjusting the position of the main shaft 3, and this position adjustment structure includes a first adjustment member 9 and a second adjustment member 10; the first adjustment member 9 is located in the inner cavity of the bearing box 4 and close to one end of the pump body, and is coaxially connected to the main shaft 3 through a threaded structure; the second adjustment member 10 is coaxially connected to the main shaft 3 through a threaded structure, and this second adjustment member is located at one end of the bearing box 4 close to the coupling 2. One end of this second adjustment member abuts against the bearing 7, and the other end of this second adjustment member extends outwards through the bearing cover 8; the bearing 7 close to the coupling 2 is located between the first adjustment member 9 and the second adjustment member 10. Preferably, the first adjustment member 9 and the second adjustment member 10 adopt adjusting nuts.
[0033] See Figure 3-4 , the bearing box 4 includes an upper box body and a lower box body, the upper box body is fixedly connected to the lower box body, and an oil cavity 4-1 for storing lubricating oil is provided in the lower box body; an oil slinger 11 for slinging the lubricating oil in the oil cavity 4-1 is provided on the main shaft 3; an oil collecting groove 4-2, an oil supply hole 4-3 and an oil return hole 4-4 for collecting the lubricating oil slung by the oil slinger 11 are provided on the lower box body; an oil supply groove 8-1 and an oil return groove 8-2 are provided on the bearing cover 8; both ends of the oil supply hole 4-3 are communicated with the oil collecting groove 4-2 and the oil supply groove 8-1 respectively; both ends of the oil return hole 4-4 are communicated with the oil return groove 8-2 and the oil cavity 4-1 of the lower box body respectively. Through the above structure, driven by the main shaft 3, the oil slinger 11 slings the lubricating oil in the oil cavity 4-1, and part of the lubricating oil will fall into the oil collecting groove 4-2, then the lubricating oil flows to the oil supply hole 4-3, and then flows out of the gap between the bearing cover 8 and the bearing 7 through the oil supply groove 8-1, so as to lubricate the bearing 7; then the lubricating oil flows to the oil return groove 8-2, and finally flows back to the oil cavity 4-1 of the lower box body through the oil return hole 4-4. Compared with the prior art that uses an oil slinger to sling oil in the oil cavity, the oil circuit structure of the oil collecting groove 4-2, the oil supply hole 4-3, the oil return hole 4-4, the oil supply groove 8-1 and the oil return groove 8-2 adopted in this embodiment achieves the effect of no need for an additional lubrication system and a compact structure.
[0034] Further, there are two sets of oil supply holes 4-3 and oil return holes 4-4 respectively, and two sets of oil supply grooves 8-1 and oil return grooves 8-2 respectively. The two sets of oil supply grooves 8-1 and oil return grooves 8-2 are respectively arranged on two bearing covers 8. In this way, two sets of bearings 7 can be lubricated simultaneously.
[0035] See Figure 3-5 , a cooling structure is provided at the part of the upper box body corresponding to the installed bearing 7. The cooling structure includes a cooling cavity 4-5, a bearing cooling water inlet 4-6, and a bearing cooling water outlet 4-7; the bearing cooling water inlet 4-6 and the bearing cooling water outlet 4-7 are respectively communicated with the cooling cavity 4-5. Compared with the prior art, in this embodiment, by adding the above cooling cavity 4-5, bearing cooling water inlet 4-6, and bearing cooling water outlet 4-7 structures, cooling water can be introduced into the cooling cavity 4-5 to cool the internal bearing 7 and lubricating oil, which is beneficial to stabilizing the performance of the bearing 7, preventing the bearing 7 from overheating, and extending the service life.
[0036] Further, there are two sets of the cooling structures; the two sets of cooling structures are connected in parallel or in series through pipelines.
[0037] See Figure 3-5 , a sealing cooling water inlet 5-1 and a sealing cooling water outlet 5-2 are provided on the mechanical seal 5; the sealing cooling water inlet 5-1 is communicated with a cooling water circulation device; the sealing cooling water outlet 5-2 is communicated with the bearing cooling water inlet 4-6 through a pipeline. In this way, after cooling the mechanical seal 5, the cooling water is then transported to the upper box body to cool the internal bearing 7 and lubricating oil, and finally returns to the water tank.
[0038] See Figure 1 , the pump body 6 includes an outer pump shell, an inner pump shell, and an impeller; the outer pump shell is fixedly connected to the bearing housing 4; the inner pump shell is fixedly arranged inside the outer pump shell; the impeller is fixedly connected to the main shaft 3.
[0039] See Figure 1-3 , the working principle of the lime slurry pump for semi-dry desulfurization in a waste power plant in this embodiment is as follows:
[0040] During operation, in the locked state, the first adjusting member 9 and the second adjusting member 10 respectively abut against both sides of the bearing 7 to prevent the main shaft 3 from shifting its position autonomously, so that the main shaft 3 can rotate stably in the bearing housing 4, thereby ensuring the normal pumping work is completed.
[0041] When it is necessary to adjust the main shaft 3 in the direction close to the coupling 2, first rotate the first adjusting member 9 to make it a certain distance away from the bearing 7 to release the limit of the main shaft 3; then move the main shaft 3 in the direction close to the coupling 2. At this time, the second adjusting member 10 also moves away from the bearing 7 until the impeller is adjusted to the optimal position in the inner pump casing (with appropriate gaps at both the front and the back). Finally, lock the first adjusting member 9 and the second adjusting member 10 to complete the adjustment. Similarly, following the above operations and adjusting in the other direction, the main shaft 3 can be moved in the direction close to the pump body 6 to adjust the impeller to the optimal position in the inner pump casing, which is beneficial to ensuring normal pumping.
[0042] In the embodiment of the present utility model, the working principle of the lime slurry pump is as follows: during operation, in the locked state, the first adjusting member and the second adjusting member respectively abut against both sides of the bearing to prevent the main shaft from shifting its position autonomously, so that the main shaft can rotate stably in the bearing housing, thereby ensuring the completion of normal pumping work. When it is necessary to adjust the position of the main shaft, first rotate the first adjusting member to make it away from the bearing to release the limit of the main shaft; then rotate the second adjusting member in the corresponding direction, which can drive the main shaft to translate in the corresponding direction, so as to adjust the impeller to the central position in the inner pump casing, which is beneficial to ensuring normal pumping.
[0043] The embodiment of the present utility model has the following advantages compared with the prior art: the main shaft of the existing lime slurry pump cannot be adjusted in position after installation, so it is difficult to ensure that the impeller is located at the central position in the inner pump casing, thus affecting the pumping effect. The lime slurry pump of the present utility model can adjust the position of the main shaft by arranging the first adjusting member and the second adjusting member, ensure that the impeller is located at the central position in the inner pump casing, and guarantee normal pumping.
[0044] The above content is a further detailed description of the present utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the art to which the present utility model pertains, without departing from the concept of the present utility model, they can also make several substitutions or modifications to these described embodiments, and these substitution or modification methods should all be regarded as belonging to the protection scope of the present utility model. In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present utility model and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of protection of the patent application.
Claims
1. A lime slurry pump, characterized in that, It includes a main shaft, a bearing housing, a coupling, a pump body, and a position adjustment structure for adjusting the position of the main shaft; One end of the main shaft is connected to the coupling, and the other end of the main shaft passes through the bearing housing and is connected to the pump body; Bearings are provided in the bearing housing, and a bearing cover for fixing the bearings is provided on the end face of the bearing housing. The main shaft passes through the bearings in the bearing housing; The position adjustment structure includes a first adjustment member and a second adjustment member coaxially connected to the main shaft through a threaded structure; the bearings are located between the first adjustment member and the second adjustment member; the first adjustment member is located in the inner cavity of the bearing housing and close to the end of the pump body; the second adjustment member is located at the end of the bearing housing close to the coupling. One end of the second adjustment member abuts against the bearing, and the other end of the second adjustment member extends outwards through the bearing cover.
2. The lime slurry pump according to claim 1, wherein, The bearing housing includes an upper housing body and a lower housing body, and the upper housing body is fixedly connected to the lower housing body.
3. The lime slurry pump according to claim 2, wherein, An oil cavity for storing lubricating oil is provided in the lower housing body; an oil slinger for throwing the lubricating oil in the oil cavity is provided on the main shaft; An oil collecting groove, an oil supply hole, and an oil return hole for collecting the lubricating oil thrown by the oil slinger are provided on the lower housing body; an oil supply groove and an oil return groove are provided on the bearing cover; both ends of the oil supply hole are respectively communicated with the oil collecting groove and the oil supply groove; both ends of the oil return hole are respectively communicated with the oil return groove and the oil cavity of the lower housing body.
4. The lime slurry pump according to claim 3, characterized in that, There are two groups of the oil supply holes and the oil return holes, and two groups of the oil supply grooves and the oil return grooves. The two groups of oil supply grooves and oil return grooves are respectively arranged on two bearing covers.
5. The lime slurry pump according to claim 2, characterized in that, A cooling structure is provided at the part of the upper housing body corresponding to the installed bearings. The cooling structure includes a cooling cavity, a bearing cooling water inlet, and a bearing cooling water outlet; the bearing cooling water inlet and the bearing cooling water outlet are respectively communicated with the cooling cavity.
6. The lime slurry pump according to claim 5, characterized in that, There are two groups of the cooling structures; the two groups of cooling structures are connected in parallel or in series through pipelines.
7. The lime slurry pump according to claim 5, wherein It also includes a mechanical seal, and a seal cooling water inlet and a seal cooling water outlet are provided on the mechanical seal; the seal cooling water inlet is communicated with a cooling water circulation device; the seal cooling water outlet is communicated with the bearing cooling water inlet through a pipeline.
8. The lime slurry pump according to claim 1, characterized in that, It also includes a motor, and the motor is connected to the coupling.
9. The lime slurry pump according to claim 1, wherein The pump body includes an outer pump shell, an inner pump shell, and an impeller; the outer pump shell is fixedly connected to the bearing housing; the inner pump shell is fixedly arranged inside the outer pump shell; the impeller is fixedly connected to the main shaft.