CN1752452A - Mining vertical pump - Google Patents

Abstract

The invention is a mine vertical pump being as light welded sand-discharging submersible pump. In the invention there are several diaphragms in the space between the pump casing and the fluid-guiding plate. In the space divided by the diaphragms there is a channel grid with the channel opening on the casing end cover plate and a stifling grid enclosed by the casing end cover plate.

Description

Mining vertical pump

technical field

The invention relates to a mine vertical pump, a light-duty welding submersible sand discharge pump, which is an amphibious water pump for both land and underwater use, and is suitable for transporting impurity submersible pumps or sand discharge submersible pumps containing solid abrasive particles in liquid.

Background technique

At present, a low-specific-revolution multi-stage sand-discharging submersible pump with a small flow rate and a high head has not yet been retrieved. The technical difficulty of this multi-stage sand discharge submersible pump is that if it is modified with a single-stage slurry pump, the structure will be complicated, the axial force balance will be difficult, and the axial leakage will be difficult to control. In addition, the whole machine is huge and inconvenient to use, so there is no ideal model so far.

Contents of the invention

The purpose of the present invention is to provide a land and underwater amphibious mining vertical pump for mine mining - a light welded sand discharge submersible pump, which can operate on the shore or on the shore, has a simple structure, and the mutual axial force Offset, axial leakage goes its way. Small size, light weight, easy to use, can overcome the above-mentioned shortcomings and deficiencies.

The technical scheme adopted in the present invention is: there are several dividing plates 137 in the space between the shell of the pump body 27 and the deflector 136 . Among the plurality of grids obtained by dividing the space between the housing and the deflector 136 by the partition plate 137, there are channel grids with passage openings on the cover plate at the end of the housing, and those closed by the cover plate at the end of the housing. Cover hole grid 135 or entity stuffy cover hole grid 145. Said shells are the shells 131, 132, 133, 134 of the multi-stage pump or the shells 131, 132 of the two-stage pump or the shell 131 of the single-stage pump. The channel openings on the cover plate at the end of the shell communicate with the channel holes 91, 92, 93, 94, 95 or 96 of the multistage pump respectively, or communicate with the channel holes 91 and 92 of the secondary pump respectively. , or communicate with the channel hole grid 91 of the single-stage pump. Said cover plate is the cover plate 103, 104, 105, 106, 107, 108, 109, 100 of the multi-stage pump or the cover plate 107, 108, 109, 100 of the secondary pump or the cover plate of the single-stage pump 109, 100. Said entity stuffy cover hole grid 145 is that the hole grid that cover plate seals is entity. The deflector 136 in the casing 131 or 132 or 134 is disconnected at the pump body drain outlet, and one end of the disconnected deflector 136 at the disconnection 141 is bent toward the center, and the other end is bent toward the main body casing 131, 132 or 134 is bent and coupled therewith. Or the deflector 136 in the shell 133 is disconnected at the suction chamber 93 or at the suction chamber 94, the channel grid 92 at the disconnection communicates with the water suction chamber 93, and the channel grid 95 at the disconnection communicates with the water suction chamber 94.

The pump body coupling section 111 or 116 has at least one decompression chamber 87 with a decompression discharge port 81 . Above the decompression chamber 87 there are also a plurality of decompression chambers with a decompression discharge port, wherein the uppermost one is the last decompression chamber 86 with a decompression discharge port 80 . On the top of various decompression chambers with decompression discharge ports, there are pins 99 or water retaining pans 85 connected by rings with openings. The shell 79 of the pump body coupling section 111 or 116 has a drain 121 for the fluid leaked from the shaft hole of the cover plate of the decompression chamber, or the shell 79 has a drain pipe 138 with the drain 121 .

There is a suction chamber 88 with a suction port 98 on the lower cover plate 102 of the pump body coupling section 111 of the multistage pump, and there is a longitudinally through pump body section 112 between the suction chamber 88 and the pump body drain outlet where the first-stage impeller 28 is located. , 113, 114, 115 channel grid 91, or between the suction chamber 88 and the pump body discharge outlet where the first stage impeller 28 is located, there is a channel grid 91 that runs through the pump body section 112, 113, 119 longitudinally. It can also be that there is a suction chamber 88 with a suction port 98 on the lower cover plate 102 of the pump body coupling section 111 of the secondary pump, and there is a longitudinal through pump between the suction chamber 88 and the pump body drain outlet where the first-stage impeller 28 is located. The channel grid 91 of the body sections 114, 115, or between the suction chamber 88 and the discharge outlet of the pump body where the first-stage impeller 28 is located, has a channel grid 91 longitudinally penetrating the pump body section 119 . Apparently, the lower cover plate 102 has an opening communicating with the passage hole 91 and the passage hole 96 .

The multi-stage pump has a water absorption section 113 in which the water absorption chamber 93 and the water absorption chamber 94 are connected back to back. The upper and lower ends of the water absorption section 113 are respectively provided with a cover plate 105 and a cover plate 106 . The cover plate 105 has an opening communicating with the passage hole 91 and the passage hole 95 . The cover plate 106 has an opening communicating with the passage hole 91 and the passage hole 92 . The so-called back-to-back means that the positions of the impeller suction inlets of the two water-absorbing chambers are symmetrical up and down.

The multistage pump has a drainage section 112 where the impellers 122 and 124 are installed back to back, or the multistage pump has a drainage section 119 where the impellers 121 and 123 are installed back to back. The upper and lower ends of the drainage section 112 are respectively provided with cover plates 103 and 104 . The upper and lower ends of the drainage section 119 are respectively provided with cover plates 107 and 142 . The cover plate 103 has an opening communicating with the passage hole 91 and the passage hole 96 . The cover plate 104 has an opening communicating with the passage hole 91 and the passage hole 95 . The cover plate 107 has an opening communicating with the passage hole 91 and the passage hole 92 . The so-called back-to-back means that the positions of the suction ports of the two impellers are symmetrical up and down.

The lock nut of the impeller 28 has a nut sheath 90 .

The advantages of the mine vertical pump of the present invention - light welded sand discharge submersible pump are simple structure, easy manufacture, ideal effect, can pump water and discharge sand, can be used in two completely different environments on land and underwater, and is suitable for transportation An explosion-proof impurity submersible pump or an explosion-proof sand removal submersible pump containing solid abrasive particles in the liquid, and can make the submersible pump larger.

Description of drawings

Fig. 1-Fig. 51 are the schematic diagrams of eight embodiments of mine vertical pump-light welding sand discharge submersible pump of the present invention.

Fig. 1 is a schematic diagram of the first embodiment of the present invention.

Fig. 2 is a schematic diagram of the second embodiment of the present invention.

Fig. 3 is a schematic diagram of a third embodiment of the present invention.

A group of diagrams of Fig. 4 and Fig. 5 together with a group of diagrams of Fig. 8-Fig. 19 are schematic diagrams of the fourth embodiment of the present invention. Wherein Fig. 4 is the H-H sectional view of Fig. 10 . Fig. 5 is a cross-sectional view along line h-h of Fig. 10 .

a-a in FIG. 5 is a partial sectional view of a-a in FIG. 10 . Fig. 8, 12, 13, 17, 18 is the top view of the cover plate that is supposed to be pulled down when the pump body has a single discharge outlet. Fig. 9, 10, 11, 14, 15, 16, 19 are J-J, I-I, K-K, L-L, N-N, M-M, R-R sectional views of Fig. 4 respectively.

A group of diagrams of Fig. 4 and Fig. 5 together with a group of diagrams of Fig. 20-Fig. 31 are schematic diagrams of the fifth embodiment of the present invention. Wherein Fig. 4 is the H-H sectional view of Fig. 22 . Fig. 5 is a sectional view taken along line h-h of Fig. 22 .

a-a in FIG. 5 is a partial sectional view of a-a in FIG. 22 . Figure 20, 24, 25, 29, 30 is the top view of the cover plate that is imagined to be pulled down when the pump body has double drainage outlets. Fig. 21, 22, 23, 26, 27, 28, 31 are J-J, I-I, K-K, L-L, N-N, M-M, R-R sectional views of Fig. 4 respectively.

Figure 6 is a schematic representation of a representative cross-sectional view of a pump body having a single discharge outlet. Figure 7 is a schematic representation of a representative cross-sectional view of a pump body having dual discharge outlets.

A group of diagrams in Fig. 32 and Fig. 33 together with a group of diagrams in Fig. 34-Fig. 39 are schematic diagrams of the sixth embodiment of the present invention. Wherein Fig. 32 is a G-G sectional view of Fig. 35 . Fig. 33 is a g-g sectional view of Fig. 35 . Fig. 34, 36, 38 is the top view of the cover plate that is supposed to be pulled down when the pump body has a single drainage outlet. Figures 35, 37, and 39 are cross-sectional views along lines F-F, G-G, and E-E of Figure 32, respectively.

A group of diagrams in Fig. 32 and Fig. 33 together with a group of diagrams in Fig. 40-Fig. 45 are schematic diagrams of the seventh embodiment of the present invention. Wherein Fig. 32 is a H-H sectional view of Fig. 41 . Fig. 33 is a g-g sectional view of Fig. 41 . Fig. 40, 42, 44 is the top view of the cover plate that is supposed to be removed when the pump body has double drainage outlets. 41, 43, and 45 are respectively F-F, G-G, and E-E cross-sectional views of FIG. 32 .

Figure 46-Figure 51 is a group of diagrams of the eighth embodiment of the present invention. Wherein Fig. 46 is a C-C sectional view of Fig. 48 . Fig. 47 is a D-D sectional view of Fig. 48 . Figure 51 is a top view of the hypothetical removed cover plate when the pump body has dual drain outlets. 48 and 49 are respectively A-A and B-B sectional views of FIG. 46 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

In the three embodiments shown in Fig. 4, Fig. 5, Fig. 32, Fig. 33, and Fig. 46 and Fig. 47, the mine vertical pump—the light-duty welded sand discharge submersible pump has a pump body 27, a pump shaft 26, an impeller 28 and motor. Its motor has a casing 21 , an upper end cover 22 , a lower end cover 23 and a stator rotor 24 . The casing 21 together with the upper end cover 22 and the lower end cover 23 forms a closed motor chamber cavity 25 . The motor shaft hole has a mechanical seal 49. In Fig. 6, the pump body has a single single drainage outlet, and there are five partitions 137 in the space between the circular shell of the pump body 27 and the deflector 136 in the shell. In Fig. 7, the pump body has double drain outlets, and there are 10 dividing plates 137 in the space between the circular shell of the pump body 27 and the deflector 136 in the shell. Among the plurality of grids obtained in the space between the housing separated by the partition plate 137 and the deflector 136, there are channel grids with passage openings on the cover plate at the end of the housing, and others are closed by the cover plate at the end of the housing. The stuffy cover hole grid 135 or entity stuffy cover hole grid 145. The shell mentioned here can be the circular shell 131,132,133,134 of the multi-stage pump in Figure 4, can be the circular shell 131,132 of the secondary pump in Figure 32, can also be the Circular casing 131 of a single-stage pump. The passage openings on the cover plate at the end of the housing mentioned here can communicate with the passage holes 91, 92, 93, 94, 95 or 96 of the multistage pump in Fig. 4 respectively, and can communicate with the passage holes in Fig. 32 respectively. The channel hole 91 or 92 is in communication, and it can also communicate with the channel hole 91 of the single-stage pump in FIG. 47 . The cover plate mentioned here can be the cover plates 103, 104, 105, 106, 107, 108, 109, 100 of the multi-stage pump in Fig. 5, and can be the cover plates 107, 108, 108, 109, 100 can also be the cover plates 109, 100 of the single-stage pump in Fig. 47 . The deflector 136 in the shell 131 or 132 or 134 mentioned above is disconnected at the pump body drain outlet. In Fig. 6 and Fig. 7, one end of the broken guide plate 136 at the breaking point 141 is bent toward the center until there is a certain gap with the impeller. The other end is bent toward and coupled to the main body housing 131 , 132 or 134 . In FIG. 14 and FIG. 26 , the deflector 136 in the housing 133 is disconnected at the water absorption chamber 93 , and the passage hole 92 at the disconnection communicates with the water absorption chamber 93 . In FIG. 16 and FIG. 28 , the deflector 126 in the housing 133 is disconnected at the water absorption chamber 94 , and the passage hole 95 at the disconnection communicates with the water absorption chamber 94 . Except the passage cells mentioned above, the cells closed by the cover plate can all be called stuffy cover cells 135 . When the axial length between the circular shell and the deflector 136 inside the shell is small, or when the distance between the two partitions 137 is small or even overlaps, the cover hole 135 can be solid. So said solid stuffy cover hole grid 145 is exactly that the hole grid that cover plate seals is entity.

The pump body connecting section 111 in the two groups of figures of Fig. 4, Fig. 5 and Fig. 32 and Fig. 33, or the pump body connecting section 116 in the group of Fig. 46 and Fig. 47 has at least one decompression chamber 87 with a decompression discharge port 81. There may also be a plurality of decompression chambers with decompression discharge ports above the decompression chamber 87 . For example, there is also a decompression chamber 117 with a decompression discharge port 118 and so on, the uppermost one being the last decompression chamber 86 with a decompression discharge port 80 . Among Fig. 5, Fig. 33, Fig. 46, on the top of the decompression chamber 86 with decompression discharge port 80, there is a water retaining plate 85 that can be connected with 3-6 pins 99, and it can also be connected with a circular ring with an opening. The water plate 85 is used to prevent the high-pressure water in the pump body from shooting to the motor when the gap between the shaft holes is ground in the later stage of use. The shell 79 of the pump body coupling section 111 or 116 may have a water outlet 121 for discharging the fluid leaked from the shaft hole of the cover plate 84 of the last decompression chamber 86 as shown in FIG. 33 . Shell 79 can also have the drain pipe 138 of the fluid leaking from the shaft hole of the cover plate 84 of the last decompression chamber 86 that is coupled outside the opening of the drain port 121 as shown in FIG. 5 and FIG. 46 .

There is a suction chamber 88 with an impeller suction port 98 on the lower cover plate 102 of the pump body coupling section 111 of the multistage pump shown in Fig. 4 and Fig. 5. The suction chamber 88 of the multistage pump is connected to the first stage impeller 28. Between the drain outlet of the pump body, there are channel holes 91 that run through the pump body sections 112, 113, 114, 115 longitudinally as shown in Fig. 4 and Fig. 5, or between the suction chamber 88 and the first stage impeller 28. There are passage holes 91 longitudinally penetrating through the pump body sections 112, 113, 119 as shown in FIG. 2 between the pump body drainage outlets. It can also be that there is a suction chamber 88 with an impeller suction port 98 on the lower cover plate 102 of the pump body coupling section 111 of the secondary pump shown in Fig. 32 and Fig. 33. The suction chamber 88 is connected to the first stage impeller 28. There is a channel hole 91 longitudinally penetrating through the pump body sections 114, 115 between the drain outlets of the pump body. Can also obtain a new two-stage pump after the pump body section 119 shown in Figure 2 and the following parts are spliced with the pump body coupling section 111 shown in Figure 33, its suction chamber 88 and the first stage impeller There is a channel hole 91 that runs through the pump body section 119 longitudinally between the pump body drain outlet where 28 is located. Apparently, the above-mentioned lower cover plate 102 of the coupling section 111 of the pump body has an opening communicating with the passage hole 91 and the passage hole 96 . The suction chamber 88 shown in Fig. 4 and Fig. 32 only has the pressure produced by the first-stage impeller 28, which is sealed by the shaft hole clearance and decompressed in the first decompression chamber 87. The pressure produced by the single-stage impeller 28 shown in FIG. 46 is decompressed in the first decompression chamber 87 by sealing the gap of the impeller mouth ring. Therefore, the wear of the shaft hole of the cover plate 83 of the first decompression chamber 87 will not be particularly prominent, and will only be equivalent to the working conditions of the shaft hole clearance seals of the other pump body segments. Therefore, in the same maintenance cycle, The state of the shaft hole clearance of the cover plate 83 of the first decompression chamber 87 is synchronized with the other shaft hole clearance conditions of the pump body, and with multiple decompression chambers, the leakage of the shaft hole of the last decompression chamber will be significantly reduced, even There is no leakage, and there is no water in the empty chamber 50, which is very important for protecting the motor.

The multistage pump shown in Fig. 4, Fig. 5 a group of figures has the water absorption section 113 that water absorption chamber 93 and water absorption chamber 94 are connected back to back as one. There are cover plates 105 and 106 at the upper and lower ends of the water absorption section 113 . The cover plate 105 has an opening communicating with the passage hole 91 and the passage hole 95 . The cover plate 106 has an opening communicating with the passage hole 91 and the passage hole 92 . Said back-to-back means that the positions of the respective impeller suction ports of the two water-absorbing chambers are symmetrical up and down.

The multi-stage pump shown in FIG. 2 and FIG. 4 has a drainage section 112 in which the impeller 122 and the impeller 124 are installed back to back, and a drainage section 119 in which the impeller 28 and the impeller 123 shown in FIG. 2 are installed back to back. There are cover plates 103 and 104 at the upper and lower ends of the drainage section 112 . There are cover plates 107 and 142 at the upper and lower ends of the drainage section 119 . The cover plate 103 has an opening communicating with the passage hole 91 and the passage hole 96 . The cover plate 104 has an opening communicating with the passage hole 91 and the passage hole 95 . The cover plate 107 has an opening communicating with the passage hole 91 and the passage hole 92 . The so-called back-to-back means that the positions of the suction ports of the two impellers in the drainage section are symmetrical up and down. Therefore, the axial force can be balanced.

The lock nut of the impeller 28 shown in FIG. 47 has the nut sheath 90 shown in FIG. 50 . The nut sheath 90 is preferably made of wear-resistant elastic material, such as rubber, nylon and the like.

4, FIG. 5, FIG. 32, FIG. 33, and FIG. 46, FIG. 47, the pump bases of the three embodiments have a filter screen 120.

The embodiment shown in FIG. 1 is a schematic diagram of the side of the pump base directly connected to the water suction pipe 139 .

The pump base of the embodiment shown in Fig. 2 and Fig. 3 has a filter screen 120, and the lower water suction port of the pump base can also be connected with a schematic diagram of a water suction pipe 139. Wherein Fig. 3 has pump bottom support 140 in addition.

Claims (10)

1. A mine vertical pump - a light welded sand discharge submersible pump, which includes a pump body (27), a pump shaft (26), an impeller (28) and a motor, and its motor has a casing (21), an upper end cover (22), lower end cover (23) and stator rotor (24), casing (21) and upper end cover (22), lower end cover (23) jointly encircle the closed motor chamber cavity (25), the motor shaft hole has The mechanical seal (49) is characterized in that there are several partitions (137) in the space between the casing of the pump body (27) and the deflector (136), and the partition (137) separates the casing and the deflector (136) Among the plurality of grids obtained in the space between them, there are channel grids with passage openings on the cover plate at the end of the shell, and the stuffy cover grids (135) or solid stuffy grids closed by the cover plate at the end of the shell. Cover hole lattice (145); Said shell is the shell (131), (132), (133), (134) of multi-stage pump or the shell (131), (132) of two-stage pump or single stage The casing (131) of the pump: the passage openings that are opened on the cover plate at the end of the casing are respectively connected with the passage holes (91), (92), (93), (94), (95) of the multistage pump Or (96) communicates, or communicates with the channel hole grid (91) or (92) of the secondary pump respectively, or communicates with the channel grid (91) of the single-stage pump; said cover plate is the cover of the multi-stage pump Plate (103), (104), (105), (106), (107), (108), (109), (100) or the cover plate (107), (108), (109) of the secondary pump ), (100) or the cover plate (109), (100) of the single-stage pump; said entity stuffy cover hole grid (145) is that the hole grid that the cover plate seals is entity. 2. The mine vertical pump as claimed in claim 1 - light welding sand discharge submersible pump, characterized in that the deflector (136) in the shell (131) or (132) or (134) is at the outlet of the pump body Disconnected at the disconnected position (141), one end of the disconnected deflector (136) is bent toward the center, and the other end is bent and connected to the main body shell (131), (132) or (134); or The deflector (136) in the shell (133) is disconnected at the suction chamber (93) or at the suction chamber (94), and the channel grid (92) at the disconnection communicates with the water suction chamber (93), and the disconnection The channel hole lattice (95) communicates with the water absorption chamber (94). 3. The mine vertical pump - light welding sand discharge submersible pump according to claim 1, characterized in that the coupling section (111) or (116) of the pump body has at least one decompression valve with a decompression discharge port (81). Room (87). 4. The mine vertical pump as claimed in claim 3 - light welding sand discharge submersible pump, characterized in that there are a plurality of decompression chambers with decompression discharge ports above the decompression chamber (87), wherein the top The one is the last decompression chamber (86) with a decompression vent (80). 5. The mine vertical pump as claimed in claim 4 - light-duty welding sand discharge submersible pump, characterized in that the top of the decompression chamber with decompression discharge port is connected by a pin (99) or a circular ring with an opening Water retaining plate (85). 6. The mine vertical pump as claimed in claim 3 --- light welded sand discharge submersible pump, characterized in that the shell (79) of the pump body coupling section (111) or (116) has a cover plate for the discharge decompression chamber The drain (121) of the fluid of shaft hole leakage, perhaps shell (79) has the drain pipe (138) with band drain (121). 7. The mine vertical pump as claimed in claim 1 - light welding sand discharge submersible pump, characterized in that there is a suction port ( 98) suction chamber (88), between the suction chamber (88) and the pump body discharge outlet where the first stage impeller (28) is located, there are longitudinally through the pump body section (112), (113), (114), (115 ) channel grid (91), or between the suction chamber (88) and the discharge outlet of the pump body where the first-stage impeller (28) is located, there is a channel through the pump body section (112), (113), (119) longitudinally There is a suction chamber (88) with a suction port (98) on the hole grid (91), or the lower cover plate (102) of the pump body coupling section (111) of the secondary pump, and the suction chamber (88) is connected to the first stage There is a channel hole (91) that runs through the pump body section (114), (115) longitudinally between the drain outlet of the pump body where the impeller (28) is located, or the pump where the suction chamber (88) and the first stage impeller (28) are located. There is a channel grid (91) that runs through the pump body section (119) longitudinally between the body drainage outlets, and the lower cover plate (102) has an opening that communicates with the channel grid (91) and the channel grid (96). 8. The mine vertical pump as claimed in claim 1 - light welding sand discharge submersible pump, characterized in that the multi-stage pump has a water absorption section (113) in which the water absorption chamber (93) and the water absorption chamber (94) are connected back to back , the upper and lower ends of the water-absorbing section (113) have cover plates (105) and cover plates (106), and the cover plates (105) have openings that communicate with the channel grid (91) and the channel grid (95), and the cover plate ( 106) There is an opening communicated with the channel cell (91) and the channel cell (92), and the back-to-back position of the impeller suction inlet of the two water-absorbing chambers is symmetrical up and down. 9. The mine vertical pump as claimed in claim 1 - light welding sand discharge submersible pump, characterized in that the multi-stage pump has a drainage section (112) with impellers (122) and impellers (124) installed back to back, or multi-stage The pump has an impeller (28) and an impeller (123) installed back to back in the drainage section (119), the upper and lower ends of the drainage section (112) have cover plates (103) and (104), and the upper and lower ends of the drainage section (119) have Cover plate (107) and (142), cover plate (103) has the opening that communicates with passage hole lattice (91) and passage hole lattice (96), and cover plate (104) has and passage hole lattice (91) and passage hole The opening that grid (95) communicates, and cover plate (107) has the opening that communicates with channel grid (91) and channel grid (92), and said back-to-back is that the position of the water inlet of two impellers is symmetrical up and down. 10. The mine vertical pump as claimed in claim 1 - light welding sand discharge submersible pump, characterized in that the lock nut of the impeller (28) has a nut sheath (90).

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