Sealing water flushing device of multi-stage pump

Abstract

The utility model relates to the technical field of multistage pumps, in particular to a seal water flushing device of a multistage pump, which comprises a water tank, one side of the water tank is provided with a first mounting hole, a filter element cleaning component is arranged in the first mounting hole, the filter element cleaning component comprises a shell, and the shell is fixedly connected in the first mounting hole. A cooling cavity is formed in the water tank, a second mounting hole is formed in the inner wall of the top of the cooling cavity, an air cooling assembly is arranged in the second mounting hole and comprises a motor, the motor is fixedly connected into the second mounting hole, a filter element is fixedly connected to the inner wall of the shell, and sliding grooves are formed in the two ends of the filter element. The sealing water flushing device of the multi-stage pump has the advantages that when the sealing water flushing device of the multi-stage pump is used for flushing the sealing water of the multi-stage pump, particulate matters and impurities in filtered water enter a mechanical sealing cavity, the residual impurities are prevented from reducing the sealing effect of a mechanical seal and damaging a rotating shaft and the mechanical seal, and the applicability and the safety of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of multistage pumps, in particular to a sealing water flushing device for a multistage pump. Background Art

[0002] A multistage pump is a centrifugal pump in which the water inlet and outlet sections and the middle section are combined together by a pull rod. Its output water pressure can be very high, and it also relies on the rotation of the impeller to obtain centrifugal force; when the gas density reaches the working range of the mechanical vacuum pump, it is pumped out, and thus a high vacuum is gradually obtained; a multistage pump realizes suction, compression and exhaust by changing the volume of the pump cavity, so it is a centrifugal pump with variable volume.

[0003] In the prior art, when ordinary industrial water is used for flushing the sealing water of a multistage pump, the particulate matters and impurities carried in the water will enter the mechanical seal cavity. The remaining impurities will not only reduce the sealing effect of the mechanical seal, but may also damage the rotating shaft and the mechanical seal, affecting the work and production. Summary of the Utility Model

[0004] The utility model discloses a sealing water flushing device for a multistage pump, aiming to solve the technical problem that when flushing the sealing water of a multistage pump, the particulate matters and impurities carried in the water will enter the mechanical seal cavity, and the remaining impurities will reduce the sealing effect of the mechanical seal, damage the rotating shaft and the mechanical seal, and affect the work and production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A sealing water flushing device for a multistage pump includes a water tank. One side of the water tank is provided with a first installation hole, and a filter element cleaning assembly is arranged in the first installation hole. The filter element cleaning assembly includes a housing which is fixedly connected in the first installation hole. A cooling cavity is arranged inside the water tank, and a second installation hole is arranged on the top inner wall of the cooling cavity. An air cooling assembly is arranged in the second installation hole. The air cooling assembly includes a motor which is fixedly connected in the second installation hole. A filter element is fixedly connected to the inner wall of the housing, and sliding grooves are formed at both ends of the filter element. Rotating rings are slidably connected in the two sliding grooves. A round hole is formed in one side of the filter element, and a fan blade is movably connected in the round hole. The fan blade is fixedly connected to the corresponding rotating ring. A plurality of circumferentially equidistant connecting pieces are fixedly connected to the outer walls of the two rotating rings. The same scraper is fixedly connected to one side of two opposite connecting pieces. A plurality of circumferentially equidistant mounting pieces are fixedly connected to the outer wall of one of the rotating rings. Round holes are formed in the plurality of mounting pieces, and rotating shafts are movably connected in the plurality of round holes. Cleaning rollers and gears are fixedly connected to the outer parts of the plurality of rotating shafts. A toothed ring is fixedly connected to the outer wall of the filter element, and the plurality of gears are meshed with the toothed ring.

[0007] By setting up a filter element cleaning component, when water flows into the housing through the water pump, the fan blades will rotate, thus rotating the rotating ring, driving the scraper to scrape off the impurities on the inner wall of the housing, avoiding long-term accumulation; by setting up gears and a toothed ring, when the rotating ring drives the installation part, the rotating shaft cleaning roller can rotate, and the surface of the filter element can be cleaned while filtering, avoiding the accumulation of impurities on the surface of the filter element and affecting the filtering effect, without manual disassembly and cleaning, increasing convenience and work efficiency.

[0008] In a preferred solution, one end of the housing away from the water tank is fixedly connected with a water pump I, and the water inlet of the water pump I is fixedly connected with a valve I and a valve II. On one side of the water tank, a multi-stage pump is arranged, and a mechanical seal is arranged inside the multi-stage pump. A filter chamber, a water intake chamber and an installation chamber are opened in the water tank. The bottom inner wall of the filter chamber is fixedly connected with an adsorption plate. A square hole is opened in the bottom inner wall of the water intake chamber, and a filter screen is fixedly connected in the square hole. A circular hole III is opened in one inner wall of the installation chamber, and a water pump II is fixedly connected to the bottom inner wall of the installation chamber. The water outlet of the water pump II is fixedly connected with a water inlet pipe, and the water inlet pipe passes through the circular hole III and is fixedly connected with the mechanical seal. The outflow port of the mechanical seal is fixedly connected with a water outlet pipe, and one end of the water outlet pipe away from the mechanical seal is fixedly connected to the valve II.

[0009] By setting up an adsorption plate and a filter screen, the water entering the filter chamber will be filtered again and enter the water intake chamber, further avoiding the possibility of impurities entering.

[0010] In a preferred solution, mounting holes III are opened in both the top inner wall and the bottom inner wall of the cooling chamber, and the same cooling pipe is fixedly connected in the two mounting holes III. One end of the cooling pipe is fixedly connected with the water inlet of the water pump II. Two fixing rods are fixedly connected to the inner wall of the cooling chamber, and sliding parts are movably connected to the outer parts of the two fixing rods. Circular holes IV are opened on the opposite sides of the two sliding parts, and the same movable rod is fixedly connected in the two circular holes IV. A movable part is slidably connected to the outer part of the movable rod. A fan is fixedly connected to the bottom of the movable part, and a circular convex is fixedly connected to the top of the movable part. The output end of the motor is connected with a rotating part through a coupling, and a telescopic rod is fixedly connected to one side of the rotating part. The end of the telescopic rod away from the rotating part is movably connected with the circular convex.

[0011] By setting up an air-cooling component, after the flushed water flows back to the water intake chamber, the hot water is pumped into the cooling pipe by the water pump II. By setting up a motor, the rotating part and the telescopic rod can be rotated, driving the movable part to slide on the movable rod, and at the same time making the sliding part drive the movable rod and slide on the fixing rod, so as to drive the fan to do circular motion above the cooling pipe, uniformly dissipating heat and improving the cooling effect.

[0012] As can be seen from the above, the sealing water flushing device of the multistage pump provided by the present utility model has the technical effects of preventing particulate matters and impurities in the water from entering the mechanical seal cavity during the sealing water flushing of the multistage pump, avoiding the remaining impurities from reducing the sealing effect of the mechanical seal and causing damage to the rotating shaft and the mechanical seal, and increasing the applicability and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a sealing water flushing device for a multistage pump proposed by the present utility model.

[0014] Figure 2 FIG. 2 is a schematic diagram of the structure of a filter element cleaning assembly of a sealing water flushing device for a multistage pump proposed by the present utility model.

[0015] Figure 3 FIG. 3 is a schematic diagram of the structure of a water tank of a sealing water flushing device for a multistage pump proposed by the present utility model.

[0016] Figure 4 FIG. 4 is a schematic diagram of the structure of an air cooling assembly of a sealing water flushing device for a multistage pump proposed by the present utility model.

[0017] In the drawings: 1. water tank; 101. filtering chamber; 102. water intake chamber; 103. cooling chamber; 104. installation chamber; 2. water pump I; 3. valve I; 4. valve II; 5. outlet pipe; 6. multistage pump; 7. mechanical seal; 8. inlet pipe; 9. filter element cleaning assembly; 901. housing; 902. rotating shaft; 903. gear; 904. toothed ring; 905. cleaning roller; 906. connecting piece; 907. scraping plate; 908. mounting piece; 909. rotating ring; 910. fan blade; 911. filter element; 10. water pump II; 11. adsorption plate; 12. air cooling assembly; 1201. fan; 1202. movable part; 1203. sliding part; 1204. movable rod; 1205. fixed rod; 1206. motor; 1207. rotating part; 1208. telescopic rod; 1209. cooling pipe; 13. filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] A sealing water flushing device for a multistage pump disclosed by the present utility model is mainly applied to the scenario where in the existing device during the sealing water flushing, particulate matters and impurities carried in the water will enter the mechanical seal cavity, and the remaining impurities will reduce the sealing effect of the mechanical seal, cause damage to the rotating shaft and the mechanical seal, and affect the production work.

[0020] Refer toFigures 1 - 4 , A sealing water flushing device for a multi-stage pump, comprising a water tank 1. An installation hole 1 is provided on one side of the water tank 1, and a filter element cleaning assembly 9 is arranged in the installation hole 1. The filter element cleaning assembly 9 includes a housing 901, and the housing 901 is fixedly connected in the installation hole 1. A cooling cavity 103 is provided inside the water tank 1, and an installation hole 2 is provided on the top inner wall of the cooling cavity 103. An air-cooling assembly 12 is arranged in the installation hole 2. The air-cooling assembly 12 includes a motor 1206, and the motor 1206 is fixedly connected in the installation hole 2. A filter element 911 is fixedly connected to the inner wall of the housing 901, and sliding grooves are provided at both ends of the filter element 911. Rotating rings 909 are slidably connected in the two sliding grooves. A round hole 1 is provided on one side of the filter element 911, and a fan blade 910 is movably connected in the round hole 1. The fan blade 910 is fixedly connected to the corresponding rotating ring 909. A plurality of circumferentially equidistant connecting pieces 906 are fixedly connected to the outer walls of the two rotating rings 909. A same scraper 907 is fixedly connected to one side of the two opposite connecting pieces 906. A plurality of circumferentially equidistant mounting pieces 908 are fixedly connected to the outer wall of one of the rotating rings 909. Round holes 2 are provided in the plurality of mounting pieces 908, and rotating shafts 902 are movably connected in the plurality of round holes 2. Cleaning rollers 905 and gears 903 are fixedly connected to the outer parts of the plurality of rotating shafts 902. A toothed ring 904 is fixedly connected to the outer wall of the filter element 911, and the plurality of gears 903 are all meshed with the toothed ring 904. When the device is in use, by providing the filter element cleaning assembly 9, when water flows into the housing 901 through the water pump 1, the fan blade 910 will rotate, thereby rotating the rotating ring 909 and driving the scraper 907 to scrape off the impurities on the inner wall of the housing 901, avoiding long-term accumulation.

[0021] Refer to Figure 1 Figure 3 , In a preferred embodiment, a water pump 1 is fixedly connected to one end of the housing 901 away from the water tank 1, and a valve 1 3 and a valve 2 4 are fixedly connected to the water inlet of the water pump 1. A multi-stage pump 6 is arranged on one side of the water tank 1, and a mechanical seal 7 is arranged inside the multi-stage pump 6. A filter cavity 101, a water intake cavity 102 and an installation cavity 104 are provided inside the water tank 1. An adsorption plate 11 is fixedly connected to the bottom inner wall of the filter cavity 101. A square hole is provided on the bottom inner wall of the water intake cavity 102, and a filter screen 13 is fixedly connected in the square hole. A round hole 3 is provided on one side inner wall of the installation cavity 104, and a water pump 2 10 is fixedly connected to the bottom inner wall of the installation cavity 104. The water outlet of the water pump 2 10 is fixedly connected to a water inlet pipe 8, and the water inlet pipe 8 passes through the round hole 3 and is fixedly connected to the mechanical seal 7. The flow outlet of the mechanical seal 7 is fixedly connected to a water outlet pipe 5, and one end of the water outlet pipe 5 away from the mechanical seal 7 is fixedly connected to the valve 2 4. When the device is in use, by providing the adsorption plate 11 and the filter screen 13, the water entering the filter cavity 101 will be filtered again and enter the water intake cavity 102, further avoiding the possibility of impurities entering.

[0022] Refer toFigure 1 and Figure 3 And 4, in a preferred embodiment, mounting holes three are formed in both the top inner wall and the bottom inner wall of the cooling chamber 103, and the same cooling pipe 1209 is fixedly connected in the two mounting holes three. One end of the cooling pipe 1209 is fixedly connected to the water inlet of the water pump two 10. Two fixing rods 1205 are fixedly connected to the inner wall of the cooling chamber 103, and sliding members 1203 are movably connected to the outer portions of the two fixing rods 1205. Circular holes four are formed in the opposite sides of the two sliding members 1203, and the same movable rod 1204 is fixedly connected in the two circular holes four. A movable member 1202 is slidably connected to the outer portion of the movable rod 1204. A fan 1201 is fixedly connected to the bottom of the movable member 1202. A circular convex is fixedly connected to the top of the movable member 1202. The output end of the motor 1206 is connected to a rotating member 1207 through a coupling. One side of the rotating member 1207 is fixedly connected to a telescopic rod 1208. The end of the telescopic rod 1208 away from the rotating member 1207 is movably connected to the circular convex. When the device is in use, the fan 1201 makes a circular motion above the cooling pipe 1209 to uniformly dissipate heat and improve the cooling effect.

[0023] Working principle: When in use, when there is no water stored in the water tank 1, the valve two 4 is closed, the valve one 3 is opened, and water source is introduced into the valve one 3. When the water flow is accelerated by the water pump one 2 and enters the outer shell 901, it will cause the fan blades 910 to rotate, thereby rotating the rotating ring 909, driving the scraper 907 to scrape the impurities on the inner wall of the outer shell 901. Through the gear 903 and the toothed ring 904, when the rotating ring 909 drives the mounting member 908, the rotating shaft 902 and the cleaning roller 905 can be rotated to clean the surface of the filter element 911 while filtering; the water flow enters the filtering chamber 101 through the filter element 911 and gradually rises to the water intake chamber 102, and is filtered again by the adsorption plate 11 and the filter screen 13. When the water level reaches a certain height, the water pump two 10 is started, and the water is sent into the mechanical seal 7 through the cooling pipe 1209 and the water inlet pipe 8 for flushing; the valve one 3 is closed, the valve two 4 is opened to make the water flow start to circulate. After the flushed water flows back to the water intake chamber 102, the hot water is pumped into the cooling pipe 1209 by the water pump two 10. The motor 1206 is started, the rotating member 1207 and the telescopic rod 1208 are rotated to drive the movable member 1202 to slide on the movable rod 1204, and at the same time, the sliding member 1203 drives the movable rod 1204 and slides on the fixing rod 1205, thereby driving the fan 1201 to make a circular motion above the cooling pipe 1209 to uniformly dissipate heat from the water flow.

[0024] As described above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. The substitution may be the substitution of some structures, devices, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present utility model and its inventive concept should be covered within the protection scope of the present utility model.

Claims

1. A sealing water flushing device for a multi-stage pump, comprising a water tank (1), characterized in that: A mounting hole 1 is provided on one side of the water tank (1), and a filter element cleaning assembly (9) is arranged in the mounting hole 1, the filter element cleaning assembly (9) comprises a shell (901), and the shell (901) is fixedly connected to the mounting hole 1, a cooling cavity (103) is provided inside the water tank (1), and a mounting hole 2 is provided on the top inner wall of the cooling cavity (103), an air cooling assembly (12) is arranged in the mounting hole 2, the air cooling assembly (12) comprises a motor (1206), and the motor (1206) is fixedly connected to the mounting hole 2.

2. A sealing water flushing device for a multi-stage pump according to claim 1, characterized in that: The inner wall of the housing (901) is fixedly connected to a filter element (911), and sliding grooves are provided at both ends of the filter element (911), and a rotating ring (909) is slidably connected in the two sliding grooves. A circular hole (1) is provided on one side of the filter element (911), and a fan blade (910) is movably connected in the circular hole (1), and the fan blade (910) is fixedly connected to the corresponding rotating ring (909). The outer walls of the two rotating rings (909) are fixedly connected to a plurality of circumferentially equidistant connecting members (906), and one side of the two opposite connecting members (906) is They are all fixedly connected to the same scraper (907), the outer wall of one rotating ring (909) is fixedly connected to a plurality of circumferentially equidistant mounting members (908), a plurality of mounting members (908) are each provided with a second circular hole, a rotating shaft (902) is movably connected inside the plurality of second circular holes, a cleaning roller (905) and a gear (903) are fixedly connected to the outside of the plurality of rotating shafts (902), a gear ring (904) is fixedly connected to the outer wall of the filter element (911), and a plurality of gears (903) are each meshed with the gear ring (904).

3. A sealing water flushing device for a multi-stage pump according to claim 2, characterized in that: One end of the housing (901) away from the water tank (1) is fixedly connected to a water pump (2), and a water inlet of the water pump (2) is fixedly connected to a valve (3) and a valve (4), and a valve (4).

4. A sealing water flushing device for a multi-stage pump according to claim 3, characterized in that: A multistage pump (6) is arranged on one side of the water tank (1), and a mechanical seal (7) is arranged inside the multistage pump (6). A filter chamber (101), a water intake chamber (102) and an installation chamber (104) are provided inside the water tank (1). An adsorption plate (11) is fixedly connected to the bottom inner wall of the filter chamber (101). A square hole is provided on the bottom inner wall of the water intake chamber (102). A filter screen (13) is fixedly connected inside the square hole. A circular hole three is provided on one side inner wall of the installation chamber (104). A water pump two (10) is fixedly connected to the bottom inner wall of the installation chamber (104). The water outlet of the water pump two (10) is fixedly connected to a water inlet pipe (8). The water inlet pipe (8) passes through the circular hole three and is fixedly connected to the mechanical seal (7). The outflow port of the mechanical seal (7) is fixedly connected to a water outlet pipe (5). The end of the water outlet pipe (5) away from the mechanical seal (7) is fixedly connected to a valve two (4).

5. The sealing water flushing device of a multi-stage pump according to claim 1, characterized in that: The top inner wall and the bottom inner wall of the cooling cavity (103) are both provided with mounting holes three, and the same cooling pipe (1209) is fixedly connected in the two mounting holes three, and one end of the cooling pipe (1209) is fixedly connected to the water inlet of the water pump two (10).

6. A sealing water flushing device for a multi-stage pump according to claim 5, characterized in that: The inner wall of the cooling chamber (103) is fixedly connected to two fixed rods (1205), and the outsides of the two fixed rods (1205) are movably connected to sliding parts (1203), and four circular holes are opened on the opposite sides of the two sliding parts (1203), and the same movable rod (1204) is fixedly connected in the two circular holes four, and the outside of the movable rod (1204) is slidably connected to a movable part (1202), the bottom of the movable part (1202) is fixedly connected to a fan (1201), and the top of the movable part (1202) is fixedly connected to a round protrusion.

7. The sealing water flushing device of a multi-stage pump according to claim 1, characterized in that: The output end of the motor (1206) is connected to a rotating member (1207) via a coupling, one side of the rotating member (1207) is fixedly connected to a telescopic rod (1208), and one end of the telescopic rod (1208) away from the rotating member (1207) is movably connected to a circular convex.

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