Double-suction energy-saving ore pulp pump of inorganic sealing water-free cooling structure

Abstract

The utility model discloses a double-suction energy-saving ore pulp pump without a sealing water cooling structure. The double-suction energy-saving ore pulp pump comprises a driving motor; a support frame; a coupling; a housing; a transmission shaft; a sealing part; a support part; an impeller body; and a first locking nut; a first interval space is formed among the impeller body, the supporting frame and the sealing part; a second interval space is formed among the impeller body, the shell and the supporting part; the impeller body comprises a central connecting seat; a first feeding hole is formed by the first side cover plate and one side of the central connecting seat; the second side cover plate and the first side cover plate are symmetrically arranged, the second side cover plate and the other side of the center connecting base are arranged at intervals, and a second feeding port is formed by the second side cover plate and the other side of the center connecting base; the first blades are connected between the first side cover plate and the central connecting seat at intervals; the second blades are connected between the second side cover plate and the central connecting seat at intervals; the technical problems that blockage is prone to occurring, energy consumption is high, sealing performance is poor, stability is poor, maintenance cost is high, a shaft is prone to being broken, and the service life is short are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, in particular to a double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure. Background Art

[0002] Slurry pumps are key equipment in the ore pulp and mineral processing industries. They are mainly used for the transportation of solid-liquid mixed materials such as potassium chloride and ore pulp. The quality of their operating conditions plays an important role in the normal production of potassium chloride and ore pulp enterprises. If the slurry pump is not properly selected, it will not only seriously affect its working efficiency and service life, but also directly affect the economy and safety of the entire enterprise.

[0003] Traditional pumps for conveying solid-liquid mixtures, slurries, etc. have at least the following deficiencies:

[0004] 1. Small scope of application and poor heat transfer: The existing slurry pumps, split-center pumps, and KJB energy-saving slurry pumps are suitable for slurries with a flow rate of 2500m3 / h and a head of less than 80m, with low solid content and small particles. Long-term use of slurry pumps and split-center pumps will cause scaling on the surface of the cooler tube wall, resulting in poor heat transfer;

[0005] 2. Poor sealing performance and serious leakage: The sealing devices of slurry pumps and split-center pumps in the prior art use mechanical seals

[0006] Or the packing seal or circulating water cooling seal, the slurry leaks along the shaft seal during operation, and the slurry instantly fills the curved surface of the semicircular positioning hole connecting the bracket and the rear pump housing. The slurry that does not have time to be discharged from the discharge port penetrates into the oil pool through the seal at the water retaining plate, causing bearing damage, packing or mechanical seal dynamic and static ring wear, resulting in seal failure;

[0007] KJB energy-saving slurry pump adopts a combined sealing wheel (multiple) and a combined sealing chamber (multiple) to form a multi-layer variable frequency speed regulating sealing device. The sealing device adopts an inverted pagoda structure. The working principle of the equipment is that high-level liquid flows into the impeller from the pump body inlet, generates pressure and flow after the impeller rotates, and flows out from the pump body outlet. Part of the high-pressure liquid enters the bowl-shaped intermediate connector through the gap between the impeller and the bowl-shaped intermediate connector, and is sealed by multiple combined sealing impellers. When the sealing device is used to transport potassium chloride slurry materials, the slurry is easily stuck between the sealing wheel and the sealing cover plate, resulting in obstruction of the impeller flow channel or insufficient flow, causing seal failure, serious leakage of cooling water in the cooling pipe, and polluting the working environment. When large-particle slurry is stuck in multiple sealing impellers and sealing covers, the pump shaft in normal working state will generate huge torque, resulting in shaft breakage;

[0008] Moreover, the solid-liquid mixture not only easily causes damage to the mechanical seal or packing seal, shortening the service life, but also the solid-liquid mixture will enter the circulating water, causing the circulating water to be polluted, affecting the sealing effect;

[0009] 3. Bearings are prone to friction and heat generation, and have a short service life: Slurry pumps and split-center pumps in the prior art reduce friction and wear by lubricating various parts of the bearings, so the quality and quantity of lubricating oil are required to be controlled at a relatively high level; unclean lubricating oil will cause bearing friction, wear, temperature rise, vibration and other problems; it is not advisable to add too much or too little lubricating oil. If there is too much oil, most of the friction heat inside the bearing cannot be taken away, and it will not play an effective heat dissipation role, and the bearing temperature rise will increase; if there is too little oil, the bearing oil film will rupture and dry friction will burn the bearing; the wrong direction of the thrust bearing and the blockage of the bearing outlet will cause the equipment to heat up and the bearing to heat up;

[0010] 4. Easy to clog and high failure rate: In the prior art, when conveying slurry with high solid content and large particles, the solid-liquid mixture formed by the slurry is viscous, and the pump casing may be clogged due to solid and hard sediment clogging, insufficient feed in the impeller feed pipe, too tight packing gland (sealing gland), or the solid-liquid mixture between the impeller and the pump body. This may cause clogging, resulting in serious bending of the pump shaft, serious wear of the impeller, damage to the mechanical seal, insufficient power of the equipment, inability to work, high energy consumption, and other failures;

[0011] 5. Large vibration, noise, and easy cavitation: The slurry pumps, split case pumps, and KJB energy-saving pumps in the existing technology may cause large vibrations in the pump due to uneven medium density and air intake in the suction pipe, uneven installation, misalignment of the pump shaft and the motor shaft, or bearing damage, which may cause excessive bearing clearance and increase inlet resistance. The impeller of the pump may be unbalanced, causing cavitation and noise.

[0012] 6. Poor wear resistance and corrosion resistance: The flow parts of the slurry pump, split case pump and slurry pump in the prior art are made of JM3, which has certain wear resistance but no corrosion resistance. The pump casing is made of cast iron. Because the potassium chloride slurry medium is highly corrosive and has a high friction coefficient, the impeller is prone to cavitation during operation. The density of the impeller material that produces cavitation is reduced, and the impeller is an important part of the slurry pump structure. The quality of the impeller will affect the working efficiency and service life of the pump;

[0013] 7. High maintenance cost: Due to structural defects, material configuration and other factors, the pump has poor wear resistance, corrosion resistance, high failure rate, and high replacement rate of spare parts. Therefore, it not only affects power efficiency, but also consumes labor and increases user maintenance costs and labor costs. The direct maintenance cost of the KJB series energy-saving slurry pump accounts for 30% of the equipment in one year, and the maintenance cost of slurry pumps and split-case pumps is more than 40%;

[0014] Therefore, a double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure is needed. Utility Model Content

[0015] In view of the above-mentioned deficiencies existing in the related technologies, the purpose is to provide a double-suction energy-saving slurry pump with an inorganic seal and waterless cooling structure to solve the technical problems of easy clogging, high energy consumption, poor sealing, poor stability, high maintenance cost, easy shaft breakage and short service life in the related technologies. It has simple structure, convenient use, convenient maintenance, high working efficiency, long service life, low maintenance cost and wide application range. It is an ideal replacement equipment for existing slurry pumps; the utility model can be seamlessly connected and used with the one-stop unattended pump station automation control system (invention patent number ZL201810716276.8) independently developed by our company, with strong compatibility, opening up a new way to create energy-saving, green and smart mining enterprises;

[0016] The technical solution to achieve the purpose is: a double-suction energy-saving slurry pump with inorganic seal and water-free cooling structure, comprising: a driving motor; a support frame, one end of which is connected to the driving motor; a coupling connected to the driving motor and arranged in the support frame; a casing, the top of which is connected to the other end of the support frame and is spaced apart from the driving motor and the coupling; a transmission shaft, one end of which is connected to the driving motor and the coupling, and the other end of which penetrates into the casing, and the transmission shaft is rotated in conjunction with the driving motor; a sealing part, which is connected to the support frame and forms a seal with the transmission shaft; a supporting part, which is connected in the casing and is used to support the other end of the transmission shaft; an impeller body, which is arranged in the casing, spaced apart from the support frame and the casing, and is connected to the transmission shaft, arranged between the sealing part and the supporting part, and is rotated in conjunction with the transmission shaft for conveying solid-liquid mixed materials; and a first locking nut, which is connected to the transmission shaft and is used to lock the impeller body;

[0017] The invention also includes: a first spacing space is provided between the impeller body, the support frame and the sealing portion;

[0018] A second spacing space is provided between the impeller body, the housing and the support portion;

[0019] The impeller body includes: a central connecting seat, which is sleeved on the transmission shaft and connected to the transmission shaft; a first side cover plate, which is spaced apart from one side of the central connecting seat, spaced apart from the support frame and the shell, and forms a first feed port with one side of the central connecting seat, and the first feed port is directly connected to the first interval space; a second side cover plate, which is symmetrically arranged with the first side cover plate, spaced apart from the other side of the central connecting seat, spaced apart from the shell, and forms a second feed port with the other side of the central connecting seat, and the second feed port is directly connected to the second interval space; a plurality of first blades, which are spaced apart and connected between the first side cover plate and the central connecting seat; and a plurality of second blades, which are spaced apart and connected between the second side cover plate and the central connecting seat, and are one-to-one connected to the first blades.

[0020] Further: the support frame includes: a first connecting plate, connected to the top of the shell; a second connecting plate, spaced apart from the first connecting plate, for connecting the drive motor; a plurality of first reinforcing plates, spaced apart and connected between the first connecting plate and the second connecting plate; a baffle, in contact with the shell, surrounding the first side cover plate, and spaced apart from the first side cover plate; and a spacer ring, connected between the first connecting plate and the baffle plate, and arranged in the first spacing space, the spacer ring having a plurality of through openings.

[0021] Further: the housing comprises: a bottom support plate;

[0022] A cylindrical side wall, the bottom of which is connected to the bottom support plate;

[0023] A sealing plate connected to the inner wall of the cylindrical side wall near the bottom to seal the bottom of the cylindrical side wall, so that a cylindrical inner space is formed in the cylindrical side wall;

[0024] A plurality of second reinforcing plates connecting the outer wall of the cylindrical side wall and the bottom supporting plate;

[0025] A flow channel housing, connected to the cylindrical side wall, disposed in the cylindrical inner space, in contact with the baffle to form a flow channel space, wherein the impeller body is accommodated in the flow channel space;

[0026] A feed flange port, connected to the outer wall of the cylindrical side wall and communicated with the cylindrical inner space, for introducing the solid-liquid mixture material;

[0027] A discharge flange is connected to the outer wall of the cylindrical side wall and communicated with the flow channel housing for discharging the solid-liquid mixture;

[0028] A sewage cleaning port connected to the outer wall of the cylindrical side wall and communicating with the cylindrical inner space;

[0029] And a third connecting plate connected to the top of the cylindrical side wall and connected to the support frame.

[0030] Further: the transmission shaft has a stepped structure, one end of which is plugged into the driving shaft on the driving motor and then bolted to the coupling, and the other end is supported by the supporting part.

[0031] Further: the sealing part includes: an outer sleeve, which is sleeved on the transmission shaft and has one end abutting against the impeller body; a sealing seat, which is connected to the through hole on the first connecting plate, surrounds the transmission shaft, and has a sealing cavity between the sealing seat and the transmission shaft; a pressure cover, which is connected to the sealing seat and seals the sealing cavity; and a feeding port, which is connected to the outer wall of the sealing seat and is arranged on the outside of the shell, and is used to add soft filler into the sealing cavity, and the soft filler fills the sealing cavity and hugs the outer sleeve.

[0032] Furthermore: the outer circumference of the outer casing is provided with a wear-resistant layer; the wear-resistant layer is in contact with the soft filler.

[0033] Further: the feeding port includes: an outer tube, one end of which is connected to the outer wall of the sealing seat and communicates with the sealing cavity, and the soft filler is accommodated in the outer tube; a joint, which is connected to the other end of the outer tube; and an inner tube, one end of which is connected to the joint, and is used to add the soft filler into the outer tube.

[0034] Furthermore: the soft filler is oil mud.

[0035] Further: the support part includes: an inner support member connected to the cylindrical side wall and arranged in the cylindrical inner space, the center position of the inner support member having a stepped through hole; a bearing seat passing through the stepped through hole and connected to the inner support member; a sliding bearing connected between the bearing seat and the transmission shaft; a cover body connected to the bearing seat to limit the sliding bearing; and a second locking nut connected to the transmission shaft to limit the sliding bearing;

[0036] Wherein, the inner support member comprises: at least two inner support plates symmetrically connected to the cylindrical side wall; and an inner support ring connected between the inner support plates and having the stepped through hole.

[0037] Furthermore: the volume size of the second interval space is larger than the volume size of the first interval space.

[0038] The above technical scheme has the following beneficial effects: a double-suction energy-saving slurry pump with inorganic seal and waterless cooling structure is provided with a driving motor, a support frame, a coupling, a casing, a transmission shaft, a sealing part, a supporting part, an impeller body and a first locking nut compared with the related art; a first spacing space is provided between the impeller body and the support frame and the sealing part; a second spacing space is provided between the impeller body and the casing and the supporting part; the impeller body is rotated in linkage with the driving motor to form a negative pressure area at the first feed port and the second feed port, and the solid-liquid mixed material enters the impeller body from two directions, respectively, from the first feed port at the first spacing space and the second feed port at the second spacing space, and is driven by the first impeller on the impeller body. The first blade and the second blade are thrown out, thereby achieving the purpose of conveying solid-liquid mixed materials. Since the solid-liquid mixed materials enter the impeller body from two directions, the probability of blockage is reduced and the energy consumption is relatively low, so that the solid-liquid mixed materials can be smoothly conveyed. At the same time, the pressure on the sealing part is reduced and the sealing performance is relatively good; thereby overcoming the technical problems of easy blockage, leakage, high energy consumption, poor sealing performance, poor stability, high maintenance cost, easy shaft breakage and short service life, and achieving the technical effects of reducing the probability of blockage, relatively low energy consumption, relatively good sealing performance, relatively good stability, relatively low maintenance cost and relatively long service life. The impeller has practicality and is suitable for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the general assembly structure;

[0040] Figure 2 for Figure 1 Schematic diagram of the structure without the drive motor and coupling;

[0041] Figure 3 is a structural schematic diagram of the support frame;

[0042] Figure 4 It is a structural schematic diagram of a part of the support frame, a part of the transmission shaft and a sealing part;

[0043] Figure 5 It is a structural schematic diagram of the support part;

[0044] Figure 6 is a schematic diagram of the structure of the impeller body;

[0045] In the figure: 10. drive motor, 20. support frame, 21. first connecting plate, 21-1. through hole, 21-2. first stopper, 22. second connecting plate, 23. first reinforcing plate, 24. baffle, 24-1. second stopper, 25. spacer ring, 25-1. through-hole, 30. coupling, 40. housing, 41. bottom support plate, 42. cylindrical side wall, 43. sealing plate, 44. second reinforcing plate, 45. flow channel housing, 45-1. flow channel space, 46. feed flange, 47. discharge flange, 48. cleaning port, 49. third connecting plate, 50. transmission shaft, 60. sealing part, 61. outer casing, 61-1. wear-resistant layer, 62. sealing seat, 62-1. sealing cavity, 63. gland, 64. feeding port, 64-1. outer tube , 64-2. Joint, 64-3. Inner tube, 70. Support part, 71. Inner support member, 71-1. Stepped through hole, 71-2. Inner support plate, 71-3. Inner support ring, 72. Bearing seat, 73. Sliding bearing, 74. Cover body, 75. Second locking nut, 80. Impeller body, 81. Center connecting seat, 81-1. Connecting through hole, 81-2. First arcuate surface, 81-3. Second arcuate surface, 81-4. Connection, 82. First side cover plate, 82-1. First feed port, 82-2. Third arcuate surface, 83. Second side cover plate, 83-1. Second feed port, 83-2. Fourth arcuate surface, 84. First blade, 85. Second blade, 90. First locking nut, 100. First interval space, 200. Second interval space. DETAILED DESCRIPTION

[0046] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0047] A double-suction energy-saving slurry pump with inorganic seal and waterless cooling structure solves the technical problems in related technologies such as easy blockage, high energy consumption, poor stability, high maintenance cost, easy shaft breakage, short service life, and the inverted pagoda-shaped multi-layer seal adopted by KJB type is stuck between the impeller and the sealing chamber due to slurry particles, causing the sealing device to lose working pressure and cause the sealing function to fail, resulting in poor sealing of the circulating water outlet of the liquid self-sealing chamber top flushing device. It can be manufactured and used, achieving the positive effects of reducing the probability of blockage, relatively low energy consumption, relatively good sealing, relatively good stability, relatively low maintenance cost, and relatively long service life. The overall idea is as follows:

[0048] Implementation

[0049] like Figure 1 , Figure 2 , Figure 6As shown; a double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure, comprising: a drive motor 10; a support frame 20, one end of which is connected to the drive motor 10; a coupling 30, which is connected to the drive motor 10 and is arranged in the support frame 20; a shell 40, the top of which is connected to the other end of the support frame 20, and is spaced apart from the drive motor 10 and the coupling 30; a transmission shaft 50, one end of which is connected to the drive motor 10 and the coupling 30, and the other end of which penetrates the shell 40, and the transmission shaft 50 is rotated in conjunction with the drive motor 10; a sealing part 60, connected to the support frame 20, and forming a seal with the transmission shaft 50; a support portion 70, connected to the housing 40, and used to support the other end of the transmission shaft 50; an impeller body 80, arranged in the housing 40, spaced from the support frame 20 and the housing 40, and connected to the transmission shaft 50, arranged between the sealing portion 60 and the support portion 70, and rotated in conjunction with the transmission shaft 50, and used to transport solid-liquid mixed materials; and a first locking nut 90, connected to the transmission shaft 50, and used to lock the impeller body 80;

[0050] The invention also includes: a first spacing space 100 is provided between the impeller body 80 and the support frame 20 and the sealing portion 60;

[0051] A second spacing space 200 is defined between the impeller body 80, the housing 40 and the support portion 70;

[0052] The impeller body 80 includes: a central connecting seat 81, which is sleeved on the transmission shaft 50 and connected to the transmission shaft 50; a first side cover plate 82, which is spaced apart from one side of the central connecting seat 81, spaced apart from the support frame 20 and the shell 40, and forms a first feed port 82-1 with one side of the central connecting seat 81, and the first feed port 82-1 is directly connected to the first interval space 100; a second side cover plate 83, which is symmetrically arranged with the first side cover plate 82, spaced apart from the other side of the central connecting seat 81, spaced apart from the shell 40, and forms a second feed port 83-1 with the other side of the central connecting seat 81, and the second feed port 83-1 is directly connected to the second interval space 200; a plurality of first blades 84, which are spaced apart and connected between the first side cover plate 82 and the central connecting seat 81; and a plurality of second blades 85, which are spaced apart and connected between the second side cover plate 83 and the central connecting seat 81, and are one-to-one connected to the first blades 84;

[0053] Specifically, during implementation, a driving motor 10, a support frame 20, a coupling 30, a housing 40, a transmission shaft 50, a sealing portion 60, a supporting portion 70, an impeller body 80 and a first locking nut 90 are provided; a first spacing space 100 is provided between the impeller body 80 and the support frame 20 and the sealing portion 60; a second spacing space 200 is provided between the impeller body 80 and the housing 40 and the supporting portion 70; the impeller body 80 is rotated in conjunction with the driving motor 10, and a negative pressure area is formed at the first feed port 82-1 and the second feed port 83-1, and the solid-liquid mixed material enters the impeller body 80 from two directions, namely, the first feed port 82-1 at the first spacing space 100 and the second feed port 83-1 at the second spacing space 200, and is thrown out by the first blade 84 and the second blade 85 on the impeller body 80, thereby achieving the purpose of conveying the solid-liquid mixed material. Since the solid-liquid mixed material enters the impeller body 80 from two directions ( Figure 1 The arrow direction in the figure reduces the probability of blockage, and the energy consumption is relatively low, so that the solid-liquid mixed material can be smoothly transported. At the same time, the pressure on the sealing part 60 is reduced, the sealing performance is relatively good, and the stability is relatively good;

[0054] Another embodiment:

[0055] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown; in implementation, the support frame 20 includes: a first connecting plate 21, connected to the top of the housing 40; a second connecting plate 22, spaced apart from the first connecting plate 21, used to connect the drive motor 10; a plurality of first reinforcing plates 23, spaced apart and connected between the first connecting plate 21 and the second connecting plate 22; a baffle 24, in contact with the housing 40, surrounding the first side cover plate 82, and spaced apart from the first side cover plate 82; and a spacer ring 25, connected between the first connecting plate 21 and the baffle plate 24, and disposed in the first spacing space 100, the spacer ring 25 having a plurality of through openings 25-1;

[0056] The first connecting plate 21 is a circular plate structure with a through hole 21-1 in the middle, and cooperates with the third connecting plate 49 through the first stop 21-2, so the installation positioning accuracy is relatively high;

[0057] The first connecting plate 21 and the third connecting plate 49 are connected by bolts, which is convenient for installation and disassembly;

[0058] The second connecting plate 22 is a circular plate-shaped structure, and is connected to the driving motor 10 by bolts, so it is convenient to install and disassemble;

[0059] The first reinforcing plates 23 are isosceles trapezoidal plate structures, three in number, and are welded between the first connecting plate 21 and the first reinforcing plates 23;

[0060] The baffle 24 is a circular plate-shaped structure, and cooperates with the flow channel housing 45 through the second stop 24-1, and the installation positioning accuracy is relatively high;

[0061] The spacer ring 25 is a circular cylindrical structure, which is welded to the first connecting plate 21 and the baffle plate 24; a through hole 25-1 is provided to facilitate the flow of solid-liquid mixed materials;

[0062] Another embodiment:

[0063] like Figure 1 , Figure 2 As shown; when implemented, the shell 40 includes: a bottom support plate 41; a cylindrical side wall 42, the bottom of which is connected to the bottom support plate 41; a sealing plate 43, connected to the inner wall of the cylindrical side wall 42 near the bottom, sealing the bottom of the cylindrical side wall 42, and forming a cylindrical inner space in the cylindrical side wall 42; a plurality of second reinforcing plates 44, connecting the outer wall of the cylindrical side wall 42 and the bottom support plate 41; a flow channel housing 45, connected to the cylindrical side wall 42, arranged in the cylindrical inner space, contacting with the baffle 24, forming a flow channel space 4 5-1, the flow channel space 45-1 accommodates the impeller body 80; the feed flange port 46 is connected to the outer wall of the cylindrical side wall 42, communicated with the cylindrical inner space, and used to introduce the solid-liquid mixed material; the discharge flange port 47 is connected to the outer wall of the cylindrical side wall 42, communicated with the flow channel housing 45, and used to export the solid-liquid mixed material; the cleaning port 48 is connected to the outer wall of the cylindrical side wall 42, communicated with the cylindrical inner space; and the third connecting plate 49 is connected to the top of the cylindrical side wall 42 and connected to the support frame 20;

[0064] The bottom support plate 41 is a circular plate structure, which is used to connect with the anchor bolts on the installation foundation, and is easy to install and disassemble;

[0065] The cylindrical side wall 42 is a cylindrical tube structure and is welded to the bottom support plate 41;

[0066] The sealing plate 43 is a circular plate structure and is welded to the cylindrical side wall 42;

[0067] The second reinforcing plate 44 is an isosceles trapezoidal plate structure, which is welded to the bottom support plate 41 and the cylindrical side wall 42, thereby improving the connection strength between the bottom support plate 41 and the cylindrical side wall 42 and improving the structural stability;

[0068] The flow channel housing 45 is welded to the cylindrical side wall 42; the formed flow channel space 45-1 is a common structure in the prior art, such as a pear-shaped flow channel; when the impeller body 80 is rotated in conjunction with the drive motor 10, the solid-liquid mixture flows along the flow channel space 45-1 and is discharged from the discharge flange 47, and the flow is relatively smooth;

[0069] The feed flange 46 is welded to the cylindrical side wall 42;

[0070] The discharge flange 47 is welded to the cylindrical side wall 42;

[0071] The cleaning port 48 is a flange port, which is welded to the cylindrical side wall 42 and is used to clean the inner space of the cylindrical shape. When the cleaning port 48 is not used daily, a round blanking plate is used to connect the flange port with bolts to seal the cleaning port 48.

[0072] The third connecting plate 49 is a circular plate structure, which is welded to the cylindrical side wall 42 and is used to be connected to the first connecting plate 21 by bolts, so that it is easy to install and disassemble;

[0073] Another embodiment:

[0074] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown; during implementation, the transmission shaft 50 has a stepped structure, one end of which is plugged into the driving shaft on the driving motor 10 and then bolted to the coupling 30, and the other end is supported by the support portion 70; the transmission shaft 50 is arranged between the coupling 30 and the support portion 70, and can be reliably limited, and the coaxiality during rotation is relatively good without deflection;

[0075] Another embodiment:

[0076] like Figure 1 , Figure 2 , Figure 4 As shown; when implemented, the sealing part 60 includes: an outer sleeve 61, which is sleeved on the transmission shaft 50, and one end of which is against the impeller body 80; a sealing seat 62, which is connected to the through hole 21-1 on the first connecting plate 21, surrounds the transmission shaft 50, and has a sealing cavity 62-1 between the sealing seat and the transmission shaft 50; a pressure cover 63, which is connected to the sealing seat 62 and seals the sealing cavity 62-1; and a feeding port 64, which is connected to the outer wall of the sealing seat 62 and is arranged outside the housing 40, and is used to add soft filler into the sealing cavity 62-1, and the soft filler fills the sealing cavity 62-1 and hugs the outer sleeve 61;

[0077] The outer sleeve 61 is connected to the transmission shaft 50 and rotates together with the transmission shaft 50;

[0078] The outer circumference of the outer casing 61 is provided with a wear-resistant layer 61-1; the wear-resistant layer 61-1 is in contact with the soft filler; the wear-resistant layer 61-1 is provided, for example: KN6 nickel-chromium alloy, tungsten carbide and other alloy coatings, which increases the wear resistance and prolongs the service life of the outer casing 61;

[0079] The sealing seat 62 is roughly in a "T"-shaped structure, and after being plugged into the through hole 21-1, it is welded to the first connecting plate 21;

[0080] A sealing gasket is placed between the gland 63 and the sealing seat 62, and then bolts are inserted to connect them, so as to seal the sealing cavity 62-1, which is conducive to the soft filler being retained in the sealing cavity 62-1, and forming a seal between the soft filler and the outer casing 61;

[0081] The feeding port 64 includes: an outer tube 64-1, one end of which is connected to the outer wall of the sealing seat 62 and communicated with the sealing cavity 62-1, and the outer tube 64-1 contains the soft filler; a joint 64-2, which is connected to the other end of the outer tube 64-1; and an inner tube 64-3, one end of which is connected to the joint 64-2 and is used to add the soft filler into the outer tube 64-1; the outer tube 64-1 is welded to the sealing seat 62; the joint 64-2 is arranged in the outer tube 64-1 and welded to the outer tube 64-1; the inner tube 64-3 is welded to the joint 64-2, and the soft filler is added to the outer tube 64-1 through the other end of the inner tube 64-3, and the soft filler enters the sealing cavity 62-1 along the outer tube 64-1. After it is filled, the other end of the inner tube 64-3 is sealed with a wire plug;

[0082] The soft filler is oil sludge, which is in the sealing cavity 62-1 and hugs the wear-resistant layer 61-1 on the outer casing 61, forming a sealing effect to prevent the solid-liquid mixture from leaking along the outer casing 61. The sealing performance is relatively good, and compared with mechanical seals, it is not easy to be damaged, and the use cost is relatively low. Compared with circulating water cooling seals, it saves water resources;

[0083] In another scenario, according to the working medium requirements, a container-type mechanical seal may be installed in the sealing chamber 62-1. Since the container-type mechanical seal is arranged in the sealing chamber 62-1, it is not easy to be damaged and the sealing performance can be ensured.

[0084] The container-type mechanical seal contacts the wear-resistant layer 61-1, which not only ensures the sealing performance, but also does not damage the outer casing 61, and the reliability of the structure is good;

[0085] Another embodiment:

[0086] like Figure 1 , Figure 2 , Figure 5As shown; when implemented, the support portion 70 includes: an inner support member 71, connected to the cylindrical side wall 42, arranged in the cylindrical inner space, the center position of the inner support member 71 has a stepped through hole 71-1; a bearing seat 72, passing through the stepped through hole 71-1, and connected to the inner support member 71; a sliding bearing 73, connected between the bearing seat 72 and the transmission shaft 50; a cover body 74, connected to the bearing seat 72, limiting the sliding bearing 73; and a second locking nut 75, connected to the transmission shaft 50, limiting the sliding bearing 73;

[0087] The inner support member 71 includes: at least two inner support plates 71 - 2 symmetrically connected to the cylindrical side wall 42; and an inner support ring 71 - 3 connected between the inner support plates 71 - 2 and having the stepped through hole 71 - 1;

[0088] The inner support plate 71-2 is a rectangular plate-shaped structure, which is welded to the cylindrical side wall 42; the inner support ring 71-3 is a circular plate-shaped structure, which is welded to the inner support plate 71-2; the inner support member 71 forms a reliable support structure;

[0089] The outer shape of the bearing seat 72 is roughly a "T"-shaped structure. After being plugged into the stepped through hole 71-1, the bearing seat 72 is connected to the inner support ring 71-3 by inserting bolts, which makes installation and disassembly more convenient.

[0090] The sliding bearing 73 is a common structure in the prior art, and has two bearing rings, one bearing ring is connected to the transmission shaft 50, and the other bearing ring is connected to the bearing seat 72. The two bearing rings are slidably connected to form a support, which ensures the coaxiality of the rotation of the transmission shaft 50, reduces the deflection, has good structural stability, reduces vibration, and has relatively low noise. In addition, since the sliding bearing 73 is arranged in the cylindrical inner space and contacts with the solid-liquid mixed material, the circulating solid-liquid mixed material plays a role in cooling, the sliding bearing 73 will not overheat, and has a relatively long service life;

[0091] The cover 74 is connected to the bearing seat 72 by bolts, which are used to limit the bearing ring on the bearing seat 72;

[0092] The second locking nut 75 is a common structure in the prior art, such as a hexagonal nut, which is threadedly connected to the transmission shaft 50 and is used to limit the bearing ring on the transmission shaft 50;

[0093] Another embodiment:

[0094] like Figure 1 , Figure 2 , Figure 6As shown; during implementation, the impeller body 80 includes: a central connecting seat 81, which is sleeved on the transmission shaft 50 and connected to the transmission shaft 50; a first side cover plate 82, which is spaced apart from one side of the central connecting seat 81, spaced apart from the support frame 20 and the shell 40, and forms a first feed port 82-1 with one side of the central connecting seat 81, and the first feed port 82-1 is directly connected to the first interval space 100; a second side cover plate 83, which is symmetrically arranged with the first side cover plate 82, spaced apart from the other side of the central connecting seat 81, spaced apart from the shell 40, and forms a second feed port 83-1 with the other side of the central connecting seat 81, and the second feed port 83-1 is directly connected to the second interval space 200; four first blades 84, which are spaced apart and connected between the first side cover plate 82 and the central connecting seat 81; and four second blades 85, which are spaced apart and connected between the second side cover plate 83 and the central connecting seat 81, and are one-to-one connected to the first blades 84;

[0095] The middle part of the central connecting seat 81 has a connecting through hole 81 - 1 , which is connected to the transmission shaft 50 and is provided with a key therebetween;

[0096] The central connecting seat 81 has a first arcuate surface 81-2 and a second arcuate surface 81-3 in appearance. The first arcuate surface 81-2 and the second arcuate surface 81-3 have the same structure. There is a connecting portion 81-4 between the first arcuate surface 81-2 and the second arcuate surface 81-3. The connecting portion 81-4 is connected to the first blade 84 and the second blade 85, and the connecting portion 81-4 is arranged at the center between the first side cover plate 82 and the second side cover plate 83.

[0097] The first side cover plate 82 has a third arcuate surface 82 - 2 , and the first blade 84 is disposed between the third arcuate surface 82 - 2 and the first arcuate surface 81 - 2 ;

[0098] The second side cover plate 83 has a fourth arc surface 83 - 2 , and a second blade 85 is provided between the fourth arc surface 83 - 2 and the second arc surface 81 - 3 ;

[0099] A first arc surface 81-2 and a third arc surface 82-2 are provided, and the friction resistance with the solid-liquid mixed material is relatively small, which is conducive to the solid-liquid mixed material entering from the first feed port 82-1 being thrown out by the first blade 84; a second arc surface 81-3 and a fourth arc surface 83-2 are provided, and the friction resistance with the solid-liquid mixed material is relatively small, which is conducive to the solid-liquid mixed material entering from the second feed port 83-1 being thrown out by the second blade 85; the probability of blockage is reduced, the energy consumption is relatively low, so that the solid-liquid mixed material can be smoothly transported, the probability of cavitation is reduced, the noise is relatively small, the stability is relatively good, and the maintenance cost is relatively low;

[0100] Another embodiment:

[0101] like Figure 1 , Figure 2 As shown; during implementation, the volume size of the second compartment 200 is greater than the volume size of the first compartment 100; because the second compartment 200 is below the first compartment 100, the solid-liquid mixture can enter the second compartment 200 more easily due to gravity, and the volume control enables the second compartment 200 to accommodate more solid-liquid mixture than the first compartment 100, indirectly reducing the probability of blockage at the first feed port 82-1, so that the solid-liquid mixture can be smoothly transported;

[0102] Structure in the prior art:

[0103] See Figure 1 , Figure 2 ; The drive motor 10, the coupling 30 and the first locking nut 90 are commonly used structures in the prior art; the drive motor 10 is a vertical motor for generating a rotational driving force; the coupling 30 is a flange coupling; the first locking nut 90 can be a hexagonal nut, which is threadedly connected to the transmission shaft 50; it is not the invention point of the utility model, but is only for better description of the utility model and facilitating understanding of the technical solution of the utility model. After seeing the disclosed content, ordinary technicians in this field can directly and unambiguously know how to set it without paying creative labor or excessive experiments;

[0104] The working principle is as follows: there is a second spacing space 200 between the impeller body 80, the housing 40 and the support part 70; the impeller body 80 is rotated in conjunction with the driving motor 10, and a negative pressure area is formed at the first feed port 82-1 and the second feed port 83-1. The solid-liquid mixture enters the impeller body 80 from two directions, namely, the first feed port 82-1 at the first spacing space 100 and the second feed port 83-1 at the second spacing space 200, and is thrown out by the first blade 84 and the second blade 85 on the impeller body 80, so as to achieve the purpose of conveying the solid-liquid mixture. Since the solid-liquid mixture enters the impeller body 80 from two directions, the probability of blockage is reduced, and the energy consumption is relatively low, so that the solid-liquid mixture can be smoothly conveyed. At the same time, the pressure on the sealing part 60 is reduced, and since the sludge is in the sealing cavity 62-1, it hugs the wear-resistant layer 61-1 on the outer casing 61, forming a sealing effect, preventing the solid-liquid mixture from leaking along the outer casing 61, and the sealing performance is relatively good;

[0105] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicating directions or positional relationships are based on the positional relationships described in the drawings and are only for the convenience of description or simplified description, rather than indicating specific directions that must be possessed; the operation process described in the embodiments is not an absolute usage procedure and corresponding adjustments may be made in actual use;

[0106] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the relevant field; the words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not necessarily indicate a quantity limitation, but indicate the existence of at least one, which needs to be determined according to the content of the embodiment;

[0107] The above is only a preferred specific implementation method, but the protection scope is not limited to it. Any technician familiar with this technical field can make equivalent substitutions or changes based on the technical solutions and inventive concepts within the disclosed technical scope, which should be covered by the protection scope.

Claims

1. A double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure, comprising: Drive motor; A support frame, one end of which is connected to the driving motor; A coupling, connected to the driving motor and arranged in the supporting frame; A housing, the top of which is connected to the other end of the support frame and is spaced apart from the drive motor and the coupling; A transmission shaft, one end of which is connected to the driving motor and the coupling, and the other end of which penetrates into the housing, and the transmission shaft is rotated in conjunction with the driving motor; a sealing portion, which is connected to the support frame and forms a seal with the transmission shaft; a supporting portion, which is connected to the housing and is used to support the other end of the transmission shaft; an impeller body, arranged in the housing, spaced apart from the support frame and the housing, connected to the transmission shaft, arranged between the sealing portion and the support portion, and rotated in conjunction with the transmission shaft for conveying a solid-liquid mixture; and a first locking nut, connected to the transmission shaft, for locking the impeller body; The invention is characterized in that: a first spacing space is provided between the impeller body, the support frame and the sealing portion; A second spacing space is provided between the impeller body, the housing and the support portion; The impeller body includes: a central connecting seat, which is sleeved on the transmission shaft and connected to the transmission shaft; a first side cover plate, which is spaced apart from one side of the central connecting seat, spaced apart from the support frame and the shell, and forms a first feed port with one side of the central connecting seat, and the first feed port is directly connected to the first interval space; a second side cover plate, which is symmetrically arranged with the first side cover plate, spaced apart from the other side of the central connecting seat, spaced apart from the shell, and forms a second feed port with the other side of the central connecting seat, and the second feed port is directly connected to the second interval space; a plurality of first blades, which are spaced apart and connected between the first side cover plate and the central connecting seat; and a plurality of second blades, which are spaced apart and connected between the second side cover plate and the central connecting seat, and are one-to-one connected to the first blades.

2. According to claim 1, a double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure is characterized in that: The support frame includes: a first connecting plate connected to the top of the shell; a second connecting plate spaced apart from the first connecting plate and used to connect the drive motor; a plurality of first reinforcing plates spaced apart and connected between the first connecting plate and the second connecting plate; a baffle plate in contact with the shell, surrounding the first side cover plate and spaced apart from the first side cover plate; and a spacer ring connected between the first connecting plate and the baffle plate, and disposed in the first spacing space, the spacer ring having a plurality of through openings.

3. The double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 2 is characterized in that: The housing comprises: a bottom support plate; A cylindrical side wall, the bottom of which is connected to the bottom support plate; A sealing plate connected to the inner wall of the cylindrical side wall near the bottom to seal the bottom of the cylindrical side wall, so that a cylindrical inner space is formed in the cylindrical side wall; A plurality of second reinforcing plates connecting the outer wall of the cylindrical side wall and the bottom supporting plate; A flow channel housing, connected to the cylindrical side wall, disposed in the cylindrical inner space, in contact with the baffle plate to form a flow channel space, wherein the impeller body is accommodated in the flow channel space; A feed flange port, connected to the outer wall of the cylindrical side wall and communicated with the cylindrical inner space, for introducing the solid-liquid mixture material; A discharge flange is connected to the outer wall of the cylindrical side wall and communicated with the flow channel housing for discharging the solid-liquid mixture; A sewage cleaning port connected to the outer wall of the cylindrical side wall and communicating with the cylindrical inner space; And a third connecting plate connected to the top of the cylindrical side wall and connected to the support frame.

4. The double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 1 is characterized in that: The transmission shaft has a stepped structure, one end of which is plugged into the driving shaft on the driving motor and then bolted to the coupling, while the other end is supported by the supporting portion.

5. The double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 2 is characterized in that: The sealing part includes: an outer sleeve, which is sleeved on the transmission shaft and has one end abutting against the impeller body; a sealing seat, which is connected to the through hole on the first connecting plate, surrounds the transmission shaft, and has a sealing cavity between the sealing seat and the transmission shaft; a pressure cover, which is connected to the sealing seat and seals the sealing cavity; and a feeding port, which is connected to the outer wall of the sealing seat and is arranged on the outside of the shell for adding soft filler into the sealing cavity, and the soft filler fills the sealing cavity and hugs the outer sleeve.

6. The double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 5 is characterized in that: The outer circumference of the outer casing is provided with a wear-resistant layer; the wear-resistant layer is in contact with the soft filler.

7. The double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 6 is characterized in that: The feeding port includes: an outer tube, one end of which is connected to the outer wall of the sealing seat and communicates with the sealing cavity, and the soft filler is accommodated in the outer tube; a joint connected to the other end of the outer tube; and an inner tube, one end of which is connected to the joint and is used to add the soft filler into the outer tube.

8. The double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 7 is characterized in that: The soft filler is oil sludge.

9. The double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 3 is characterized in that: The support part comprises: an inner support member connected to the cylindrical side wall and arranged in the cylindrical inner space, wherein the center position of the inner support member has a stepped through hole; a bearing seat passing through the stepped through hole and connected to the inner support member; a sliding bearing connected between the bearing seat and the transmission shaft; a cover body connected to the bearing seat and limiting the sliding bearing; and a second locking nut connected to the transmission shaft and limiting the sliding bearing; Wherein, the inner support member comprises: at least two inner support plates symmetrically connected to the cylindrical side wall; and an inner support ring connected between the inner support plates and having the stepped through hole.

10. A double-suction energy-saving slurry pump with an inorganic seal and water-free cooling structure according to claim 1 or 3 or 4 or 8 or 9, characterized in that: The volume size of the second partition is larger than the volume size of the first partition.

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