Water outlet filtering device of double suction pump

Abstract

The utility model discloses a water outlet filtering device of a double suction pump. The water outlet filtering device comprises the double suction pump, a water inlet of the fixing pipe is in a circular pipe shape and is communicated with the drainage end of the double-suction pump, a filter plate is arranged in the fixing pipe, the fixing pipe is provided with a limiting ring, the end, away from the double-suction pump, of the filter plate is fixedly connected with the limiting ring, and the peripheral wall of the limiting ring makes contact with the inner wall of the fixing pipe. And a driving mechanism is arranged on the fixed pipe. In the using process of the improved double-suction pump water outlet filtering device, self-cleaning of the filtering plate can be completed regularly through reciprocating movement of the filtering plate, the service life of the filtering plate is greatly prolonged, impurities filtered out by the filtering plate can be discharged out of the device while self-cleaning of the filtering plate is carried out, and the service life of the filtering plate is prolonged. Therefore, the content of impurities in water in the double-suction pump and the fixed pipe is greatly reduced, accelerated abrasion in the pump body is avoided, and the service life of the double-suction pump is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of double-suction pumps, and in particular to a water outlet filtration device for a double-suction pump. Background Technology

[0002] Double-suction pumps, as an important type of centrifugal pump, are widely used in engineering due to their high head and large flow rate. The impeller of this type of pump is actually composed of two back-to-back impellers. The water flowing out of the impellers flows into a volute. In order to ensure that wear impurities inside the pump do not enter the downstream system, a filter structure is usually installed at the drain outlet of the double-suction pump.

[0003] The existing filtration structure at the outlet of a double-suction pump is usually located at the outlet of the pump. A removable filter plate is used to perform the filtration operation at the outlet of the double-suction pump. This results in a large amount of impurities being stored in the outlet of the double-suction pump, which may increase the wear and tear on the pump body and reduce the service life of the double-suction pump. Utility Model Content

[0004] The purpose of this invention is to provide a water outlet filtration device for a dual-suction pump, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water outlet filtration device for a double-suction pump, comprising a double-suction pump;

[0006] Also includes:

[0007] A fixed pipe has a cylindrical inlet that is connected to the drain end of a double-suction pump. A filter plate is installed inside the fixed pipe. The fixed pipe is equipped with a limiting ring, and the end of the filter plate away from the double-suction pump is fixedly connected to the limiting ring. The outer peripheral wall of the limiting ring is in contact with the inner wall of the fixed pipe. A driving mechanism is provided on the fixed pipe to drive the filter plate to slide back and forth inside the fixed pipe.

[0008] Two guide pipes are positioned opposite each other on both sides of the limiting ring, and one end of each guide pipe is fixedly inserted into the fixed pipe and is coplanar with the inner wall of the fixed pipe. The bottom side of the fixed pipe is provided with a drainage mechanism for discharging the sewage flowing out of the guide pipe.

[0009] Preferably, the filter plate is V-shaped, and both the upper and lower sides of the filter plate are in contact with the inner wall of the fixed tube.

[0010] Preferably, a soft ring is fixedly installed inside the ring wall of the limiting ring, and the outer peripheral wall of the soft ring is in contact with the inner wall of the fixing tube.

[0011] Preferably, the driving mechanism includes a driver and a threaded cylinder. The driver is fixedly installed on the side of the fixed pipe away from the double-suction pump. A threaded rod is rotatably installed inside the fixed pipe, and the driving end of the driver is fixedly connected to the corresponding end of the threaded rod. One end of the threaded cylinder is threaded onto the outer circumference of the threaded rod, and the other end of the threaded cylinder is fixedly connected to the inner wall of the limiting ring through several connecting rods.

[0012] Preferably, the drainage mechanism includes a liquid storage tank, which is fixedly installed on the bottom side of the fixed pipe, and its bottom side is coplanar with the bottom side of the double-suction pump. The other end of the guide pipe is fixedly inserted through the tank wall of the liquid storage tank, and the drain end of the liquid storage tank is connected to a drain pipe.

[0013] This utility model has the following beneficial effects:

[0014] During use, the improved double-suction pump outlet filtration device can perform self-cleaning of the filter plates at regular intervals through the reciprocating movement of the filter plates, greatly extending the service life of the filter plates. At the same time as the filter plates are self-cleaning, the impurities filtered by the filter plates can be discharged from the device, thereby greatly reducing the content of impurities in the water inside the double-suction pump and the fixed pipe, so as to avoid accelerated wear inside the pump body and improve the service life of the double-suction pump. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a perspective view of the internal structure of the fixed tube of this utility model;

[0018] Figure 3 This is a top view of the internal structure of the fixed tube of this utility model;

[0019] Figure 4 This is a front view of the internal structure of the fixed tube and the liquid storage tank of this utility model.

[0020] In the diagram: 1. Double suction pump; 2. Fixed pipe; 3. Filter plate; 4. Limiting ring; 5. Drive mechanism; 51. Driver; 52. Threaded rod; 53. Threaded cylinder; 6. Guide pipe; 7. Drainage mechanism; 71. Liquid storage tank; 72. Drain pipe; 8. Soft ring. Detailed Implementation

[0021] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] This utility model provides a technical solution: (Refer to...) Figure 1 - Figure 4 The present invention discloses a water outlet filtration device for a double-suction pump, comprising a double-suction pump 1;

[0023] Also includes:

[0024] The fixed pipe 2 has a cylindrical inlet that is connected to the drain end of the double suction pump 1. The fixed pipe 2 is equipped with a filter plate 3 and a limiting ring 4. The end of the filter plate 3 away from the double suction pump 1 is fixedly connected to the limiting ring 4. The outer peripheral wall of the limiting ring 4 is in contact with the inner wall of the fixed pipe 2. The fixed pipe 2 is equipped with a driving mechanism 5 for driving the filter plate 3 to slide back and forth inside the fixed pipe 2.

[0025] Two guide pipes 6 are positioned opposite each other on both sides of the limiting ring 4, and one end of each guide pipe 6 is fixedly inserted into the fixed pipe 2 and is coplanar with the inner wall of the fixed pipe 2. The bottom side of the fixed pipe 2 is provided with a drainage mechanism 7 for discharging the sewage flowing out of the guide pipe 6.

[0026] In this embodiment, during the use of the improved double-suction pump 1 outlet filter device, please refer to... Figure 1 machine Figure 3 As shown, the water discharged by the double suction pump 1 flows directly into the fixed pipe 2 (the drain outlet of the fixed pipe 2 is connected to a water supply pipe). The water flowing into the fixed pipe 2 passes through the holes of the filter plate 3 and the inner hole of the limiting ring 4 and flows into the water supply pipe. Then, the water supply pipe guides the water to the corresponding position for discharge.

[0027] During the flow of water in the fixed pipe 2, the drive mechanism 5 starts to drive the filter plates 3 to slide back and forth rapidly in the fixed pipe 2 at regular intervals through the limit ring 4. When the filter plates 3 move away from the double suction pump 1, a small amount of water in the fixed cylinder passes through the holes of the filter plates 3 in the opposite direction to push out the impurities in the holes of the filter plates 3, so as to complete the self-cleaning of the holes of the filter plates 3.

[0028] Please refer to Figure 2 - Figure 4As shown, when the limiting ring 4 moves away from the double-suction pump 1, the misalignment of the limiting ring 4 and the guide pipe 6 releases the blockage of the opening of the guide pipe 6. At this time, due to the obstruction of the water flow by the filter plate 3, some of the water in the fixed pipe 2 carries most of the impurities filtered out by the filter plate 3, passes through the guide pipe 6, and is guided to the corresponding position for discharge by the drainage mechanism 7. Thus, while the double-suction pump 1 is running, the impurities filtered out by the filter plate 3 can be discharged intermittently, which greatly reduces the impurity content in the water in the double-suction pump 1 and the fixed pipe 2, thereby avoiding accelerated wear inside the pump body and improving the service life of the double-suction pump 1.

[0029] In a further preferred embodiment of this utility model, such as Figure 2 machine Figure 3 As shown, the filter plate 3 is V-shaped, and both the upper and lower sides of the filter plate 3 are in contact with the inner wall of the fixed tube 2.

[0030] In this embodiment, please refer to Figure 2 machine Figure 3 As shown, the V-shaped filter plate 3 can greatly enhance the contact area between the filter plate 3 and the water, thereby increasing the number of holes in the filter plate 3. This increases the amount of water flowing through the filter plate 3 without affecting its water filtration performance. When the water flows to the position of the filter plate 3, the filter plate 3 can form a structure similar to a cutter, thereby splitting the water flow into two streams for simultaneous filtration, thus improving the water filtration efficiency of the filter plate 3.

[0031] In a further preferred embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 4 As shown, a soft ring 8 is fixedly installed inside the ring wall of the limiting ring 4, and the outer peripheral wall of the soft ring 8 is in contact with the inner wall of the fixing tube 2.

[0032] In this embodiment, please refer to Figure 3 As shown, when the filter plate 3 moves toward the double suction pump 1 and comes into contact with the inner wall of the fixed cylinder, the guide pipe 6 is aligned with the middle of the limiting ring 4. This is because the expansion and contraction deformation of the soft ring 8 can enhance the sealing strength between the limiting ring 4 and the inner wall of the fixed pipe 2, thereby stably cutting off the communication between the inside of the fixed pipe 2 and the inside of the guide pipe 6.

[0033] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the drive mechanism 5 includes a driver 51 and a threaded cylinder 53. The driver 51 is fixedly installed on the side of the fixed pipe 2 away from the double suction pump 1. A threaded rod 52 is rotatably installed inside the fixed pipe 2, and the drive end of the driver 51 is fixedly connected to the corresponding end of the threaded rod 52. One end of the threaded cylinder 53 is threaded onto the outer periphery of the threaded rod 52, and the other end of the threaded cylinder 53 is fixedly connected to the inner wall of the limiting ring 4 through several connecting rods.

[0034] In this embodiment, please refer to Figure 2 and Figure 3 As shown, when the filter plate 3 slides back and forth rapidly, the driver 51 starts and drives the threaded rod 52 to rotate in the forward and reverse directions for the corresponding number of turns. (The driver 51 consists of a housing motor, a controller, and a gear transmission structure, wherein the motor is a forward and reverse motor.) Due to the mutual contact between the limiting ring 4 and the inner wall of the fixed tube 2, the forward rotating threaded rod 52 gradually retracts into the threaded cylinder 53, and the reverse rotating threaded rod 52 gradually slides out of the threaded cylinder 53. Thus, the filter plate 3 is driven to slide back and forth in the fixed tube 2 through the limiting ring 4. The device has a high degree of automation.

[0035] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 4 As shown, the drainage mechanism 7 includes a liquid storage tank 71, which is fixedly installed on the bottom side of the fixed pipe 2, and its bottom side is coplanar with the bottom side of the double suction pump 1. The other end of the guide pipe 6 is fixedly inserted through the tank wall of the liquid storage tank 71, and the drain end of the liquid storage tank 71 is connected to a drain pipe 72.

[0036] In this embodiment, please refer to Figure 2 and Figure 4 As shown, after passing through the guide pipe 6, the sewage flows directly into the storage tank 71, and then into the drain pipe 72. The drain pipe 72 guides the sewage to a suitable location for discharge, such as a drainage ditch or canal, to avoid the sewage flowing onto the ground around the device, which would increase the operator's subsequent cleaning work. In addition, the storage tank 71 is designed so that the bottom of the fixed pipe 2 can support the fixed pipe 2, which would prevent the fixed pipe 2 from bearing a large force at the connection between the fixed pipe 2 and the double suction pump 1 for a long time due to the weight of the fixed pipe 2, thus affecting the stability of the connection between the fixed pipe 2 and the double suction pump 1.

[0037] Working principle: During the use of this improved double-suction pump 1 outlet filtration device, the water discharged by the double-suction pump 1 flows directly into the fixed pipe 2, and then through the holes of the filter plate 3 and the inner hole of the limiting ring 4 into the water supply pipe. Then, it is guided by the water supply pipe to the corresponding position for discharge. When the water moves to the position of the filter plate 3, the filter plate 3 can block the impurities in the water in the fixed cylinder. At the same time, the filter plate 3 can form a structure similar to a cutter, thereby dividing the water flow into two streams for simultaneous filtration. Furthermore, due to the impact of the water flow on the inclined surface of the filter plate 3, the impurities attached to the filter plate 3 can be washed down and pushed to the limiting ring 4 between the filter plate 3 and the fixed pipe 2.

[0038] As water flows within the fixed pipe 2, the actuator 51 starts periodically, rapidly driving the threaded rod 52 to rotate sequentially in both the forward and reverse directions a corresponding number of times. Due to the mutual contact between the limiting ring 4 and the inner wall of the fixed pipe 2, the forward-rotating threaded rod 52 gradually retracts into the threaded cylinder 53, while the reverse-rotating threaded rod 52 gradually slides out of the threaded cylinder 53. This causes the filter plate 3 to reciprocate within the fixed pipe 2 via the limiting ring 4. As the filter plate 3 moves away from the double-suction pump 1, the filter plate 3... The water in the fixed cylinder is squeezed and flows backward through the holes of the filter plate 3 to push out the impurities in the holes of the filter plate 3, thus completing the self-cleaning of the holes of the filter plate 3. At the same time, as the limiting ring 4 and the guide pipe 6 are misaligned, the blockage of the opening of the guide pipe 6 can be released. At this time, due to the obstruction of the water flow by the filter plate 3, some of the water in the fixed pipe 2 carries most of the impurities filtered out by the filter plate 3 and flows through the guide pipe 6 into the storage tank 71, and then into the drain pipe 72. The drain pipe 72 guides the water to a suitable location for discharge, such as a drainage ditch or drainage channel.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water outlet filtration device for a double-suction pump, comprising a double-suction pump (1); Its features are, Also includes: A fixed pipe (2) is provided with a cylindrical inlet that is connected to the drain end of the double suction pump (1). A filter plate (3) is provided inside the fixed pipe (2). A limiting ring (4) is provided in the fixed pipe (2). The end of the filter plate (3) away from the double suction pump (1) is fixedly connected to the limiting ring (4). The outer peripheral wall of the limiting ring (4) is in contact with the inner wall of the fixed pipe (2). A driving mechanism (5) is provided on the fixed pipe (2) for driving the filter plate (3) to slide back and forth inside the fixed pipe (2). Two guide pipes (6) are positioned opposite each other on both sides of the limiting ring (4), and one end of each guide pipe (6) is fixedly inserted into the fixed pipe (2) and is coplanar with the inner wall of the fixed pipe (2). The bottom side of the fixed pipe (2) is provided with a drainage mechanism (7) for discharging the sewage flowing out of the guide pipe (6).

2. The outlet filtration device of a double-suction pump according to claim 1, characterized in that: The filter plate (3) is V-shaped, and both the upper and lower sides of the filter plate (3) are in contact with the inner wall of the fixed tube (2).

3. The outlet filtration device of a double-suction pump according to claim 2, characterized in that: The limiting ring (4) has a soft ring (8) fixedly installed inside its ring wall, and the outer peripheral wall of the soft ring (8) is in contact with the inner wall of the fixed tube (2).

4. The outlet filtration device of a dual-suction pump according to claim 3, characterized in that: The drive mechanism (5) includes a driver (51) and a threaded cylinder (53). The driver (51) is fixedly installed on the side of the fixed pipe (2) away from the double suction pump (1). A threaded rod (52) is rotatably installed inside the fixed pipe (2), and the driving end of the driver (51) is fixedly connected to the corresponding end of the threaded rod (52). One end of the threaded cylinder (53) is threaded onto the outer periphery of the threaded rod (52), and the other end of the threaded cylinder (53) is fixedly connected to the inner wall of the limiting ring (4) through several connecting rods.

5. The outlet filtration device of a double-suction pump according to claim 4, characterized in that: The drainage mechanism (7) includes a storage tank (71), which is fixedly installed on the bottom side of the fixed pipe (2), and its bottom side is coplanar with the bottom side of the double suction pump (1). The other end of the guide pipe (6) is fixedly inserted through the tank wall of the storage tank (71), and the drain end of the storage tank (71) is connected to a drain pipe (72).

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