Novel slurry pump adopting solid-liquid two-phase flow

Abstract

The utility model discloses a novel slurry pump adopting solid-liquid two-phase flow, which belongs to the technical field of slurry pumps, and comprises an impeller, a protective sleeve is arranged outside the impeller, a front protective plate is fixedly mounted on one side of the protective sleeve, a rear protective plate is fixedly mounted on the other side of the protective sleeve, and the rear protective plate is fixedly mounted on the other side of the protective sleeve. A pump cover is installed on one side of the front protection plate through protection plate bolts in a threaded mode, a pump body is installed on one side of the rear protection plate through protection plate bolts in a threaded mode, a mechanical seal box is fixedly installed between the rear protection plate and the pump body, a mechanical seal is fixedly installed in the mechanical seal box, and a bracket is fixedly installed on one side of the pump body through square head screws. Mechanical sealing is adopted, packing is not added, leakage is avoided, water resources are saved, energy is saved, environment friendliness is achieved, meanwhile, convenience of on-site disassembly and maintenance is fully considered in the structural design, the generalization degree is high, operation is reliable, and the workload of installation, disassembly and maintenance is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slag slurry pump, especially to a new type of slag slurry pump adopting solid-liquid two-phase flow. BACKGROUND

[0002] The slag slurry pump belongs to a centrifugal pump in terms of physics, and refers to a kind of machinery for increasing the energy of solid-liquid mixed medium by centrifugal force, which converts electric energy into kinetic energy and potential energy of medium. The slag slurry pump is widely used in metallurgy, coal mine, iron mine, steel, building material and power industry for conveying highly abrasive slurry containing iron powder, coal powder, slag and sand.

[0003] The existing slag slurry pump adopts skeleton seal, and six to eight pumps need to be installed in one pump shell seat. The skeleton seal not only increases shaft power and wastes electric energy, but also has short service life. In addition, when the skeleton seal is damaged, mud and sand enter the bearing, causing damage to the bearing. The pump must be lifted out of the slag slurry for disassembly and cleaning, which wastes labor, delays the construction period and increases the cost of unit earthwork.

[0004] Therefore, it is urgent to provide a new type of slag slurry pump adopting solid-liquid two-phase flow to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model solves the technical problem of overcoming the above-mentioned defects of the prior art and provides a new type of slag slurry pump adopting solid-liquid two-phase flow.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a new type of slag slurry pump adopting solid-liquid two-phase flow, which comprises a impeller body, a sheath is arranged outside the impeller body, a front guard plate is fixedly installed on one side of the sheath, a rear guard plate is fixedly installed on the other side of the sheath, a pump cover is screw-threaded installed on one side of the front guard plate through a guard plate bolt, a pump body is screw-threaded installed on one side of the rear guard plate through a guard plate bolt, a mechanical seal box is fixedly installed between the rear guard plate and the pump body, a mechanical seal is fixedly installed in the mechanical seal box, and a bracket is fixedly installed on one side of the pump body through a square head screw.

[0007] Through the technical scheme, when the impeller body rotates, the front baffle guides the slurry entering the pump, so that the slurry can flow into the flow channel between the impeller body and the front baffle and the rear baffle uniformly, the solid particles in the slurry are prevented from directly impacting the pump cover and the pump body, the impact and uneven flow of the fluid on the impeller body are reduced, the service life of the pump cover and the pump body is prolonged, the rear baffle provides support and positioning for the impeller body, the stability of the impeller body in the rotating process is ensured, meanwhile, the gap between the impeller body and the pump shell is uniform, the normal operation of the pump is maintained, the pump cover and the pump body are tightly matched to form a sealed chamber, the slurry leakage is prevented, the pressure and flow stability in the pump are ensured, and the working efficiency of the pump is improved.

[0008] The utility model further provides for: the one side of pump cover is equipped with the inlet spout through first short pipe bolt screw thread installation, the sealed installation has the inlet pad between pump cover and inlet spout.

[0009] Through the technical scheme, the slurry enters the inside of the pump cover and the pump body through the inlet spout, and the inlet pad ensures that the slurry does not leak when flowing from the inlet spout.

[0010] The utility model further provides for: the top of the sheath is equipped with the outlet spout through second short pipe bolt screw thread installation, the sealed installation has the outlet pad between the sheath and outlet spout.

[0011] Through the technical scheme, the slurry in the inside of the pump cover and the pump body is discharged through the outlet spout, and the outlet pad ensures that the slurry does not leak when discharging from the outlet spout.

[0012] The utility model further provides for: the sealed installation has first sealing ring between the sheath and front baffle and rear baffle, the top of front baffle and rear baffle all are equipped with the lifting ring screw thread installation.

[0013] Through the technical scheme, the first sealing ring prevents the slurry from leaking from the gap between the front baffle and the rear baffle, and the design of the lifting ring screw facilitates the disassembly and installation of the front baffle and the rear baffle, so that the device can be operated more conveniently during maintenance and repair.

[0014] The utility model further provides for: the sealed installation has first sealing ring between the sheath and front baffle and rear baffle, the top of front baffle and rear baffle all are equipped with the lifting ring screw thread installation.

[0015] Through the technical scheme, the clamping installation mode of the pressing plate and the sheath clamping groove makes assembly and disassembly more convenient, facilitates maintenance and repair of the device, and can also adjust the position between the pump cover and the pump body according to actual needs, further optimizing the performance of the pump.

[0016] The utility model further provides for: the sealed installation has first sealing ring between the sheath and front baffle and rear baffle, the top of front baffle and rear baffle all are equipped with the lifting ring screw thread installation.

[0017] Through the technical scheme, the second sealing ring prevents slurry from leaking from the gap between the rear guard plate and the mechanical seal box, the pipe joint is designed to enable the working state of the mechanical seal to be observed externally, and the maintenance and overhaul of the equipment are facilitated.

[0018] The utility model further provides for: the inside rotation of mechanical seal and bracket is installed with transmission shaft, the outer surface of transmission shaft is fixedly connected with the inside of impeller body, the outer surface of transmission shaft is fixedly installed with impeller dismounting ring, the third sealing ring is sealedly installed between impeller dismounting ring and mechanical seal.

[0019] Through the technical scheme, the design of the impeller dismounting ring makes it more convenient to replace or maintain the impeller body, reduces the maintenance time and cost, and the installation of the third sealing ring can further ensure the effect of the mechanical seal.

[0020] The utility model discloses the beneficial effects are as follows:

[0021] 1. The utility model discloses a mechanical seal, does not add the coiled material, does not leak, saves water resource, energy -conserving environmental protection, and the structure design fully considers the convenience of on -the -spot disassembly overhaul, and the generalization degree is high, and reliable operation makes the workload of installation, dismounting maintenance greatly reduce greatly;

[0022] 2. The utility model discloses the solid -liquid two -phase flow speed ratio theory of latest publishing internationally research and development design volute flow passage and impeller blade water conservancy curve, and thickening overflow component can better adapt to the delivery of solid -liquid mixture, reduces abrasion, improves the service life, and simultaneously product can adopt direct connection transmission mode, also can adopt belt drive, satisfies various needs of user on -the -spot. DRAWINGS

[0023] Figure 1 It is the sectional view of the utility model;

[0024] Figure 2 It is the impeller structure diagram of the utility model;

[0025] Figure 3 It is the sheath structure diagram of the utility model;

[0026] Figure 4 It is the front guard plate structure diagram of the utility model;

[0027] Figure 5 It is the rear guard plate structure diagram of the utility model;

[0028] Figure 6 It is the mechanical seal box structure diagram of the utility model;

[0029] Figure 7 It is the bracket three view of the utility model.

[0030] In the figure: 1, impeller body; 2, sheath; 3, front guard plate; 4, rear guard plate; 5, pump cover; 6, pump body; 7, mechanical seal box; 8, mechanical seal; 9, inlet short pipe; 10, outlet short pipe; 11, bracket; 12, connecting bolt; 13, pressing plate; 14, inlet pad; 15, first short pipe bolt; 16, guard plate bolt; 17, first sealing ring; 18, lifting ring screw; 19, outlet pad; 20, second short pipe bolt; 21, second sealing ring; 22, pipe joint; 23, third sealing ring; 24, impeller dismounting ring; 25, transmission shaft; 26, square head screw. DETAILED DESCRIPTION

[0031] The advantages and features of the present application will be more easily understood by those skilled in the art through the preferred embodiments of the present application in conjunction with the accompanying drawings, so that the scope of protection of the present application can be more clearly and definitely defined.

[0032] Please refer to Figures 1-7 A new type of slag slurry pump using solid-liquid two-phase flow, including impeller body 1, the outside of the impeller body 1 is provided with sheath 2, one side of the sheath 2 is fixedly installed with front guard plate 3, the other side of the sheath 2 is fixedly installed with rear guard plate 4, one side of the front guard plate 3 is screw-mounted with pump cover 5 through guard plate bolt 16, one side of the rear guard plate 4 is screw-mounted with pump body 6 through guard plate bolt 16, the rear guard plate 4 and the pump body 6 are fixedly installed with mechanical seal box 7 between, the mechanical seal box 7 is fixedly installed with mechanical seal 8 inside, one side of the pump body 6 is fixedly installed with bracket 11 through square head screw 26, when the impeller body 1 rotates, the front guard plate 3 guides the slag slurry entering the pump, so that the slag slurry can flow uniformly into the flow channel between the impeller body 1, the front guard plate 3 and the rear guard plate 4, preventing the solid particles in the slag slurry from directly impacting the pump cover 5 and the pump body 6, reducing the impact and uneven flow of fluid on the impeller body 1, prolonging the service life of the pump cover 5 and the pump body 6, the rear guard plate 4 provides support and positioning for the impeller body 1, ensuring the stability of the impeller body 1 during rotation, while ensuring the uniformity of the gap between the impeller body 1 and the pump shell, maintaining the normal operation of the pump, the pump cover 5 and the pump body 6 tightly cooperate to form a sealed chamber, preventing the slag slurry from leaking, ensuring the stability of the pressure and flow in the pump, and improving the working efficiency of the pump.

[0033] As Figure 1As shown, one side of the pump cover 5 is threaded with the inlet pipe 9 by the first short pipe bolt 15, the inlet gasket 14 is sealingly installed between the pump cover 5 and the inlet pipe 9, the top end of the sheath 2 is threaded with the outlet pipe 10 by the second short pipe bolt 20, the outlet gasket 19 is sealingly installed between the sheath 2 and the outlet pipe 10, the slurry enters the inside of the pump cover 5 and the pump body 6 through the inlet pipe 9, the inlet gasket 14 ensures that the slurry does not leak when flowing from the inlet pipe 9, the slurry in the inside of the pump cover 5 and the pump body 6 is discharged through the outlet pipe 10, and the outlet gasket 19 ensures that the slurry does not leak when being discharged from the outlet pipe 10.

[0034] As shown in Figures 1-5 , the first sealing ring 17 is sealingly installed between the sheath 2 and the front guard plate 3 and the rear guard plate 4 respectively, the top end of the front guard plate 3 and the rear guard plate 4 is threaded with the lifting ring screw 18, the pressing plate 13 is threaded between the pump cover 5 and the pump body 6 by the connecting bolt 12, one side of the pressing plate 13 is clamped and connected with the sheath 2, the second sealing ring 21 is sealingly installed between the rear guard plate 4 and the mechanical seal box 7, the pipe joint 22 is fixedly installed outside the mechanical seal box 7 and extends into the inside of the mechanical seal 8, the first sealing ring 17 prevents the slurry from leaking from the gap between the front guard plate 3 and the rear guard plate 4, the design of the lifting ring screw 18 facilitates the disassembly and installation of the front guard plate 3 and the rear guard plate 4, making it more convenient to operate during equipment maintenance and repair, the clamping and connecting installation of the pressing plate 13 and the sheath 2 makes the assembly and disassembly more convenient, facilitating the maintenance and repair of the equipment, and the position between the pump cover 5 and the pump body 6 can be adjusted according to actual needs, further optimizing the performance of the pump, the second sealing ring 21 prevents the slurry from leaking from the gap between the rear guard plate 4 and the mechanical seal box 7, and the design of the pipe joint 22 allows the working state of the mechanical seal 8 to be observed externally, facilitating the maintenance and repair of the equipment.

[0035] As shown in Figure 1 and Figure 7 , the transmission shaft 25 is rotatably installed in the inside of the mechanical seal 8, the outer surface of the transmission shaft 25 is fixedly connected with the inside of the impeller body 1, the impeller dismounting ring 24 is fixedly installed on the outer surface of the transmission shaft 25, the third sealing ring 23 is sealingly installed between the impeller dismounting ring 24 and the mechanical seal 8, the design of the impeller dismounting ring 24 makes it more convenient to replace or repair the impeller body 1 when needed, reducing maintenance time and cost, and the installation of the third sealing ring 23 can further ensure the effect of the mechanical seal 8.

[0036] The utility model discloses when using, motor passes through direct drive or belt drive drive transmission shaft 25 through bracket 11 and rotates, and transmission shaft 25 drives impeller body 1 and rotates, and the slurry enters the inside of pump cover 5 and pump body 6 through the inlet short pipe 9, and inlet pad 14 ensures that the slurry does not leak when flowing from inlet short pipe 9, and the front guard plate 3 guides the slurry into the pump, so that the slurry can flow evenly between the flow channel of impeller body 1 and the front guard plate 3 and rear guard plate 4, prevent the solid particles in the slurry from directly impacting pump cover 5 and pump body 6, reduce the impact and uneven flow of fluid on impeller body 1, prolong the service life of pump cover 5 and pump body 6, and the rear guard plate 4 provides support and positioning for impeller body 1, ensures the stability of impeller body 1 during rotation, and ensures that the gap between impeller body 1 and the pump shell is uniform, maintains the normal operation of the pump, and the pump cover 5 and pump body 6 are tightly matched to form a sealed chamber, prevent the slurry from leaking, ensure the stability of the pressure and flow in the pump, and improve the working efficiency of the pump, then the slurry in the pump cover 5 and pump body 6 is discharged through the outlet short pipe 10, and outlet pad 19 ensures that the slurry does not leak when being discharged from the outlet short pipe 10, and the design of the lifting eye bolt 18 facilitates the disassembly and installation of the front guard plate 3 and the rear guard plate 4, so that the device can be operated more conveniently during maintenance and repair, the clamping installation mode of the clamp plate 13 and the sheath 2 slot makes assembly and disassembly more convenient, facilitates maintenance and repair of the equipment, the position between the pump cover 5 and pump body 6 can be adjusted according to actual needs, further optimizes the performance of the pump, the design of the pipe joint 22 makes it possible to observe the working state of the mechanical seal 8 externally, facilitates maintenance and repair of the equipment, and the design of the impeller dismounting ring 24 makes it more convenient to replace or repair the impeller body 1, reduces maintenance time and cost.

[0037] The above only is the embodiment of the utility model, and does not limit the patent range of the utility model, and the equivalent structure or equivalent flow conversion of the utility model specification and the attached drawing contents, or direct or indirect application in other related technical fields, all are included in the patent protection range of the utility model.

Claims

1. A new type of slurry pump using solid-liquid two-phase flow, comprising an impeller body (1), characterized in that: The impeller body (1) is externally provided with a sheath (2), one side of the sheath (2) is fixedly installed with a front guard plate (3), the other side of the sheath (2) is fixedly installed with a rear guard plate (4), one side of the front guard plate (3) is threadedly installed with a pump cover (5) through a guard plate bolt (16), one side of the rear guard plate (4) is threadedly installed with a pump body (6) through a guard plate bolt (16), the rear guard plate (4) and the pump body (6) are fixedly installed with a mechanical seal box (7), the mechanical seal box (7) is fixedly installed with a mechanical seal (8) in the inside, one side of the pump body (6) is fixedly installed with a bracket (11) through a square head screw (26).

2. A novel slurry pump employing solid-liquid two phase flow as claimed in claim 1, wherein: One side of the pump cover (5) is threadedly installed with an inlet pipe (9) through a first short pipe bolt (15), the pump cover (5) and the inlet pipe (9) are sealingly installed with an inlet gasket (14) therebetween.

3. A new type of slurry pump using solid-liquid two-phase flow according to claim 1, characterized in that: The top end of the sheath (2) is threadedly installed with an outlet pipe (10) through a second short pipe bolt (20), the sheath (2) and the outlet pipe (10) are sealingly installed with an outlet gasket (19) therebetween.

4. A new type of slurry pump using solid-liquid two-phase flow according to claim 1, characterized in that: The sheath (2) and the front guard plate (3) and the rear guard plate (4) are sealingly installed with a first sealing ring (17) therebetween, the top end of the front guard plate (3) and the rear guard plate (4) are threadedly installed with a lifting ring screw (18) thereon.

5. A new type of slurry pump employing solid-liquid two-phase flow as claimed in claim 1, wherein: The pump cover (5) and the pump body (6) are threadedly installed with a pressing plate (13) through a connecting bolt (12), one side of the pressing plate (13) is clampedly installed with the sheath (2) through a clamping groove.

6. A new type of slurry pump employing solid-liquid two-phase flow as claimed in claim 1, wherein: The rear guard plate (4) and the mechanical seal box (7) are sealingly installed with a second sealing ring (21) therebetween, the outside of the mechanical seal box (7) is fixedly installed with a pipe joint (22) which penetrates through one end and extends to the inside of the mechanical seal (8).

7. A new type of slurry pump employing solid-liquid two-phase flow as claimed in claim 1, wherein: The inside of the mechanical seal (8) is rotatably installed with a transmission shaft (25), the outer surface of the transmission shaft (25) is fixedly connected with the inside of the impeller body (1), the outer surface of the transmission shaft (25) is fixedly installed with an impeller dismounting ring (24), the impeller dismounting ring (24) and the mechanical seal (8) are sealingly installed with a third sealing ring (23) therebetween.

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