A new type of center body for pump body

Abstract

The utility model provides a new type of central body for a pump body, including a shaft rod, an outer wall of the shaft rod is provided with a thrust bearing, an outer side of the shaft rod is provided with a mechanical seal assembly, one end of the shaft rod is fixedly connected to a blade shaft seat, the outer wall of the blade shaft seat is clamped and connected to an impeller blade, one end of the blade shaft seat is threadedly connected to a bolt fixing piece, one end of the shaft rod is fixedly connected to a linkage shaft block, the other end of the shaft rod is fixedly connected to a threaded cylinder, and one end of the impeller blade is installed with a clamping assembly. Compared with the prior art, the utility model has the following beneficial effects: by utilizing the clamping assembly, the clamping block can be inserted into the blade shaft seat position, and the clamping blocks at both ends are propped open by using a pressure spring, so that after being inserted into the clamping groove, the clamping block position expands, thereby being embedded in the clamping groove position of the blade shaft seat, which is convenient for installing a single impeller blade, and disassembly is more convenient and quick, which is convenient for subsequent maintenance of the impeller position.

Description

Technical Field

[0001] The utility model relates to a novel central body for a pump body, belonging to the field of pump bodies. Background Art

[0002] A pump is a machine that transports fluids or pressurizes fluids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. Pumps are mainly used to transport liquids such as water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids. Pumps can usually be divided into three categories according to their working principles: positive displacement pumps, dynamic pumps and other types of pumps. In addition to classification by working principle, they can also be classified and named by other methods. For example, according to the driving method, they can be divided into electric pumps and water turbine pumps; according to the structure, they can be divided into single-stage pumps and multi-stage pumps; according to the purpose, they can be divided into boiler feed pumps and metering pumps; according to the nature of the transported liquid, they can be divided into water pumps, oil pumps and mud pumps. According to the presence or absence of an axis structure, they can be divided into linear pumps and traditional pumps. Water pumps can only transport logistics with fluids as the medium, and cannot transport solids. The central body of the vortex pump is the pump shaft and the vortex impeller, which uses the vortex impeller to generate negative pressure to transport liquids.

[0003] In the prior art, after the pump body has been used for a long time, the center body needs to be regularly repaired. The impeller may be damaged or rusted due to long-term use, which affects the swirl effect. The structure inside the pump needs to be repaired. When a single blade is damaged, the impeller position needs to be replaced as a whole, which is costly. At the same time, the impeller seat is fixed by bolts in the pump. After long-term use, the bolts become rusty, making disassembly more difficult. Therefore, it is necessary to design a new center body for the pump body that is convenient for quick disassembly of a single impeller blade. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a new center body for a pump body to solve the problems raised in the above-mentioned background technology. The utility model facilitates the disassembly and replacement of a single impeller blade.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a new type of central body for a pump body, including a shaft rod, a thrust bearing is provided on the outer wall of the shaft rod, a mechanical seal assembly is provided on the outer side of the shaft rod, one end of the shaft rod is fixedly connected to a blade shaft seat, the outer wall of the blade shaft seat is snap-connected to an impeller blade, one end of the blade shaft seat is threadedly connected to a bolt fixing piece, one end of the shaft rod is fixedly connected to a linkage shaft block, the other end of the shaft rod is fixedly connected to a threaded cylinder, and one end of the impeller blade is installed with a snap-fit ​​assembly.

[0006] Furthermore, the interior of the mechanical seal assembly includes a built-in sleeve, a bearing rubber ring, a spring sleeve, a buffer spring, a sleeve rubber ring, a static ring, a dynamic ring and a lubrication hole, the outside of the shaft is provided with a built-in sleeve, the outside of the built-in sleeve is installed with a spring sleeve, the inside of the built-in sleeve is installed with a bearing rubber ring, the inside of the spring sleeve is provided with a sleeve rubber ring, the inside of the spring sleeve is provided with a buffer spring, the bottom of the spring sleeve is installed with a static ring, the outer wall of the static ring is slidably installed with a dynamic ring, and the outer wall of the spring sleeve is provided with a lubrication hole.

[0007] Furthermore, the sleeve rubber ring is located between the built-in sleeve and the spring sleeve, and the bearing rubber ring is located between the shaft rod and the built-in sleeve, and the diameter of the bearing rubber ring is smaller than that of the sleeve rubber ring.

[0008] Furthermore, the interior of the clamping assembly includes a clamping block, a pressure spring and a ball, the outer wall of the impeller blade is fixedly connected to the clamping block, the inner wall of the clamping block is fixedly connected to the pressure spring, and the inner wall of the clamping block is provided with a ball.

[0009] Furthermore, the engaging block is fixedly connected to another engaging block via a pressure spring, and the ball bearing is arranged at an outer position of the engaging block.

[0010] Furthermore, a slot is provided on the outer wall of the impeller shaft seat, and the engaging assembly is engaged with the slot, the impeller blade is a swirl blade, a protrusion is provided on the top of the engaging assembly, and the protrusion passes through the impeller shaft seat.

[0011] Furthermore, the bolt fixing piece passes through the threaded connection between the impeller shaft seat and the threaded barrel, and the groove at one end of the linkage shaft block is a hexagonal groove.

[0012] The beneficial effects of the utility model are as follows: the utility model can insert the locking block into the impeller shaft seat position by utilizing the locking assembly, and use the pressure spring to prop open the locking blocks at both ends, so that after being inserted into the slot, the locking block position expands, thereby being embedded in the slot position of the impeller shaft seat, which is convenient for installing a single impeller blade, and the protrusions set on the top of the locking block can be used to squeeze the locking blocks, so that disassembly is more convenient and quick, which is convenient for subsequent maintenance of the impeller position and replacement of a damaged impeller with a single blade, saving maintenance costs and time.

[0013] The shaft and the pump housing are sealed by a mechanical seal assembly, and the mechanical seal assembly is used to increase the seal inside the pump. At the same time, a lubrication hole is provided on the outer wall of the mechanical seal assembly. After long-term use, lubricating paste and lubricating oil can be added to the lubrication hole position, so that the lubricating oil can flow through the internal gap between the shaft and the mechanical seal assembly, so as to achieve better lubrication effect and reduce the occurrence of jamming after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is a structural schematic diagram of a new type of central body for a pump body of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 Practical Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 Practical Figure 2 Enlarged view of point B in the middle.

[0019] In the figure: 1. shaft; 2. thrust bearing; 3. mechanical seal assembly; 301. built-in sleeve; 302. bearing rubber ring; 303. spring sleeve; 304. buffer spring; 305. sleeve rubber ring; 306. static ring; 307. dynamic ring; 308. lubrication hole; 4. impeller seat; 5. impeller blade; 6. bolt fixing; 7. linkage shaft block; 8. threaded cylinder; 9. snap-fit ​​assembly; 901. snap-fit ​​block; 902. pressure spring; 903. ball. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figure 1 and Figure 2 The utility model provides a technical solution: a new type of central body for a pump body, including a shaft rod 1, a thrust bearing 2 is arranged on the outer wall of the shaft rod 1, a mechanical seal assembly 3 is arranged on the outer side of the shaft rod 1, one end of the shaft rod 1 is fixedly connected to a blade shaft seat 4, the outer wall of the blade shaft seat 4 is clamped and connected to an impeller blade 5, one end of the blade shaft seat 4 is threadedly connected to a bolt fixing part 6, one end of the shaft rod 1 is fixedly connected to a linkage shaft block 7, the other end of the shaft rod 1 is fixedly connected to a threaded cylinder 8, and one end of the impeller blade 5 is installed with a clamping assembly 9.

[0022] By utilizing the snap-fit ​​assembly 9, the snap-fit ​​block 901 can be inserted into the position of the impeller shaft seat 4, and the snap-fit ​​blocks 901 at both ends can be stretched open by utilizing the pressure springs 902, so that after being inserted into the slot, the snap-fit ​​block 901 expands and is thereby engaged in the slot position of the impeller shaft seat 4, thereby facilitating the installation of a single impeller blade 5. By utilizing the protrusions provided on the top of the snap-fit ​​block 901, the snap-fit ​​blocks 901 can be squeezed to make disassembly more convenient and quick, thereby facilitating subsequent maintenance of the impeller position and replacing a single blade of a damaged impeller, thereby saving maintenance costs and time.

[0023] See also Figure 3 to Figure 4 The utility model provides a technical solution: the interior of the mechanical seal assembly 3 includes a built-in sleeve 301, a bearing rubber ring 302, a spring sleeve 303, a buffer spring 304, a sleeve rubber ring 305, a static ring 306, a dynamic ring 307 and a lubrication hole 308, the outside of the shaft rod 1 is provided with a built-in sleeve 301, the outside of the built-in sleeve 301 is installed with a spring sleeve 303, the inside of the built-in sleeve 301 is installed with a bearing rubber ring 302, the inside of the spring sleeve 303 is provided with a sleeve rubber ring 305, the inside of the spring sleeve 303 is provided with a buffer spring 304, the bottom of the spring sleeve 303 is installed with a static ring 306, the outer wall of the static ring 306 is slidably installed with a dynamic ring 307, and the outer wall of the spring sleeve 303 is provided with a lubrication hole 308.

[0024] The above structure increases the sealing effect between the shaft 1 and the external pump housing through the mechanical seal assembly 3 .

[0025] Preferably, the sleeve rubber ring 305 is located between the built-in sleeve 301 and the spring sleeve 303 , and the bearing rubber ring 302 is located between the shaft rod 1 and the built-in sleeve 301 , and the diameter of the bearing rubber ring 302 is smaller than that of the sleeve rubber ring 305 .

[0026] The above structure buffers and seals other parts of the mechanical seal assembly 3 through the sleeve rubber ring 305 and the bearing rubber ring 302.

[0027] Preferably, the interior of the snap-fit ​​assembly 9 includes a snap-fit ​​block 901, a pressure spring 902 and a ball 903, the outer wall of the impeller 5 is fixedly connected to the snap-fit ​​block 901, the inner wall of the snap-fit ​​block 901 is fixedly connected to the pressure spring 902, and the inner wall of the snap-fit ​​block 901 is provided with a ball 903.

[0028] The above structure installs and removes the impeller blade 5 through the clamping assembly 9.

[0029] Furthermore, the engaging block 901 is fixedly connected to another engaging block 901 via a pressure spring 902 , and the ball 903 is arranged at an outer position of the engaging block 901 .

[0030] The above structure increases the elastic force between the engaging blocks 901 through the pressure spring 902, so that they can be embedded in the impeller shaft seat 4 after installation.

[0031] Furthermore, a slot is formed on the outer wall of the impeller shaft seat 4 , and the engaging assembly 9 is engaged with the slot. The impeller blade 5 is a swirl blade. A protrusion is formed on the top of the engaging assembly 9 , and the protrusion passes through the impeller shaft seat 4 .

[0032] The above structure uses the card slot to fit and fix the position of the card assembly 9.

[0033] Furthermore, the bolt fixing member 6 passes through the threaded connection between the impeller shaft seat 4 and the threaded barrel 8, and the groove at one end of the linkage shaft block 7 is a hexagonal groove.

[0034] The above structure is butt-jointed and installed with the output shaft of the motor through the linkage shaft block 7.

[0035] Specific implementation method: The central body of the swirl pump is the pump shaft and the swirl impeller. The swirl impeller is used to generate negative pressure to transport liquid. First, the motor is connected to the linkage shaft block 7 position of the central body, and the shaft rod 1 is used to drive the impeller shaft seat 4 to rotate, thereby driving the impeller blades 5 to rotate, driving the internal air flow, thereby generating swirl negative pressure, so that the pump can operate; secondly, after the new pump body is used for a long time, the central body position needs to be regularly maintained. The impeller will be damaged or rusted due to long-term use, affecting the swirl effect. The snap assembly 9 can be used to insert the snap block 901 into the impeller shaft seat 4 position, and the pressure spring 902 is used to open the snap blocks 901 at both ends, so that after being inserted into the slot, the snap block 901 position expands, thereby being embedded in the impeller. The slot position of the shaft seat 4 is convenient for installing a single impeller blade 5. The protrusion set on the top of the locking block 901 can be used to squeeze the locking blocks 901, so that the disassembly is more convenient and quick, which is convenient for subsequent maintenance of the impeller position and replacement of a damaged impeller with a single blade, saving maintenance cost and time; finally, the mechanical seal assembly 3 seals the shaft rod 1 and the pump casing during operation, and the mechanical seal assembly 3 is used to increase the sealing inside the pump. At the same time, the outer wall of the mechanical seal assembly 3 is provided with a lubrication hole 308. After long-term use, lubricating paste and lubricating oil can be added to the lubrication hole 308, so that the lubricating oil can flow into the shaft rod 1 and the mechanical seal assembly 3 through the internal gap, so that the lubrication effect is better and the occurrence of jamming after long-term use is reduced.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of central body for a pump body, comprising a shaft (1), characterized in that: The outer wall of the shaft (1) is provided with a thrust bearing (2), the outer side of the shaft (1) is provided with a mechanical seal assembly (3), one end of the shaft (1) is fixedly connected to a blade shaft seat (4), the outer wall of the blade shaft seat (4) is snap-connected to an impeller blade (5), one end of the blade shaft seat (4) is threadedly connected to a bolt fixing member (6), one end of the shaft (1) is fixedly connected to a linkage shaft block (7), the other end of the shaft (1) is fixedly connected to a threaded barrel (8), and one end of the impeller blade (5) is mounted with a snap-connection assembly (9).

2. A new type of central body for a pump body according to claim 1, characterized in that: The interior of the mechanical seal assembly (3) comprises an internal shaft sleeve (301), a bearing rubber ring (302), a spring sleeve (303), a buffer spring (304), a sleeve rubber ring (305), a static ring (306), a dynamic ring (307) and a lubrication hole (308); the exterior of the shaft rod (1) is provided with an internal shaft sleeve (301); the exterior of the internal shaft sleeve (301) is provided with a spring sleeve (303); the interior of the internal shaft sleeve (301) is provided with a bearing rubber ring (302); the interior of the spring sleeve (303) is provided with a sleeve rubber ring (305); the interior of the spring sleeve (303) is provided with a buffer spring (304); the bottom of the spring sleeve (303) is provided with a static ring (306); the outer wall of the static ring (306) is slidably provided with a dynamic ring (307); and the outer wall of the spring sleeve (303) is provided with a lubrication hole (308).

3. A new type of central body for a pump body according to claim 2, characterized in that: The sleeve rubber ring (305) is located between the built-in shaft sleeve (301) and the spring sleeve (303), and the bearing rubber ring (302) is located between the shaft rod (1) and the built-in shaft sleeve (301), and the diameter of the bearing rubber ring (302) is smaller than that of the sleeve rubber ring (305).

4. The novel center body for a pump according to claim 1 is characterized in that: The interior of the snap-fit ​​assembly (9) comprises a snap-fit ​​block (901), a pressure spring (902) and a ball (903); the outer wall of the impeller blade (5) is fixedly connected to the snap-fit ​​block (901); the inner wall of the snap-fit ​​block (901) is fixedly connected to the pressure spring (902); and the inner wall of the snap-fit ​​block (901) is provided with a ball (903).

5. A new type of central body for a pump body according to claim 4, characterized in that: The engaging block (901) is fixedly connected to another engaging block (901) via a pressure spring (902), and the ball (903) is arranged at an outer position of the engaging block (901).

6. The novel center body for a pump according to claim 1 is characterized in that: The outer wall of the impeller shaft seat (4) is provided with a slot, and the snap-fit ​​assembly (9) is engaged with the slot; the impeller blade (5) is a swirl blade; a protrusion is provided on the top of the snap-fit ​​assembly (9), and the protrusion passes through the impeller shaft seat (4).

7. The novel center body for a pump according to claim 1 is characterized in that: The bolt fixing member (6) passes through the threaded connection between the impeller shaft seat (4) and the threaded cylinder (8), and the groove at one end of the linkage shaft block (7) is a hexagonal groove.

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