A buffer and pressure reducing device for the outlet water of a rainwater and sewage lifting pump station

Abstract

This utility model discloses a buffer and pressure-reducing device for the effluent of a rainwater and sewage lifting pump station, relating to the field of rainwater treatment technology. It aims to solve the technical problems of poor flexibility and easy deformation in current buffer mechanisms. The device includes an outer cylinder and a buffer assembly. Both ends of the outer cylinder are fixed with end plates by bolts. An inner tube is fixed inside the outer cylinder, and the inner tube has a ring-shaped array of side holes. A concave air cavity is provided inside the outer cylinder, corresponding to the inner tube. A rubber sleeve is provided inside the air cavity and fits over the outside of the inner tube. The buffer assembly is located inside the air cavity of the outer cylinder. The buffer assembly consists of pressure-reducing strips, uprights, and connecting strips. Two sets of pressure-reducing strips are provided, and the two sets are fixedly connected by the uprights. Each set of pressure-reducing strips has four strips, arranged in a ring with varying heights and staggered patterns. The connecting strips are located between adjacent pressure-reducing strips. This utility model has the advantages of maintaining flexibility while preventing deformation and ensuring service life.

Description

Technical Field

[0001] This utility model relates to the field of rainwater treatment technology, and more specifically, to a buffer and pressure reduction device for the outlet water of a rainwater and sewage lifting pump station. Background Technology

[0002] In some areas, the destinations for sewage or rainwater discharge are located at relatively low elevations, while the sources of sewage and rainwater are situated at higher elevations, making normal discharge impossible through gravity flow. Rainwater and sewage lifting pump stations can use pumps and other equipment to elevate water, overcoming these elevation differences and ensuring that sewage and rainwater can be smoothly transported to appropriate treatment facilities or discharge points. For example, rainwater collected in low-lying areas can be lifted and transported to the main urban stormwater drainage network, or sewage from higher-lying residential areas can be lifted to suitable locations within the municipal sewage network.

[0003] When a water pump suddenly starts or stops, the water flow velocity changes drastically, easily causing water hammer. The instantaneous high-pressure impact of water hammer can far exceed the normal pressure-bearing capacity of the pipeline, leading to damage such as rupture and deformation. Buffering and pressure-reducing devices can effectively reduce water hammer. However, commonly used pressure-reducing devices are mostly piston or diaphragm types. Piston types have poor flexibility due to resistance, while diaphragm types are prone to deformation over prolonged use, affecting their effectiveness. Therefore, we propose a buffering and pressure-reducing device for the effluent of a rainwater and sewage lifting pump station. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a buffer and pressure reducing device for the outlet of rainwater and sewage lifting pump stations, so as to solve the technical problems of poor flexibility and easy deformation of the current buffer mechanism.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a buffer and pressure reducing device for the outlet of a rainwater and sewage lifting pump station, comprising an outer cylinder and a buffer assembly. Both ends of the outer cylinder are fixed with end plates by bolts. An inner tube is fixed inside the outer cylinder, and side holes are arranged in a ring array on the inner tube. A concave air cavity is provided inside the outer cylinder, and the air cavity corresponds to the inner tube. A rubber sleeve is provided inside the air cavity, and the rubber sleeve is fitted onto the outside of the inner tube. The buffer assembly is located inside the air cavity of the outer cylinder. The buffer assembly consists of pressure-reducing strips, uprights, and connecting strips. There are two sets of pressure-reducing strips, and the two sets of pressure-reducing strips are fixedly connected by uprights. Each set of pressure-reducing strips has four strips, which are arranged in a ring with staggered heights. The connecting strips are located between adjacent pressure-reducing strips.

[0006] In use, the liquid flows inside the inner tube. When the pump stops and water hammer occurs, the pressure inside the tube increases. The high pressure passes through the side hole and causes the rubber sleeve to swell, thereby reducing the pressure and mitigating the impact of water hammer on the liquid pipeline. The rubber sleeve has pleats at both ends. When the pressure is too high, the pleats unfold, increasing the expansion space of the rubber sleeve and allowing the device to withstand higher pressures, ensuring the device's service life. When the rubber sleeve expands, it squeezes the upright and drives the pressure-relieving strips to unfold. Adjacent pressure-relieving strips are connected to their components by connecting strips. During the unfolding process, the ribs extend, further buffering the expansion of the rubber sleeve through the buffer components. After the water hammer subsides, the pressure-relieving strips can retract by the rebound of the ribs. The above structure further improves the buffering and pressure-reducing effect of the device, while reducing the force exerted on the rubber sleeve and preventing deformation and damage.

[0007] Preferably, the inner opening of the end plate is designed in an inclined bucket shape and a sealing ring is provided at the inner opening. Both ends of the outer cylinder are provided with ports, and the ports are connected to the inner opening of the end plate and the inner tube.

[0008] Preferably, the end of the rubber sleeve is fixed to the inside of the port of the outer cylinder, both ends of the rubber sleeve are provided with pleats, and the buffer assembly is sleeved on the outside of the rubber sleeve.

[0009] Preferably, the pressure-relieving strip has adjustment grooves at both ends, an interface on the side of the pressure-relieving strip, and the end of the upright is fixed in the corresponding interface.

[0010] Preferably, both ends of the connecting strip are fixed with adjusting rods, and one end of the adjusting rod is slidably installed in the adjusting groove of the corresponding pressure-relieving strip.

[0011] Preferably, a rib is fixed to the other end of the adjusting rod, and the outer end of the rib is fixed to the end of the corresponding pressure-relieving strip.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. When this utility model is in use, the liquid flows inside the inner tube. When the pump stops and water hammer occurs, the pressure inside the tube increases. The high pressure passes through the side hole and causes the rubber sleeve to swell, thereby reducing the pressure and reducing the impact of water hammer on the liquid pipeline. The rubber sleeve has pleats at both ends. When the pressure is too high, the pleats unfold, which can increase the space for the rubber sleeve to expand, so that the device can withstand higher pressure and ensure the service life of the device.

[0013] 2. In the process of the expansion and unfolding of the rubber sleeve, the squeezing upright drives the pressure-relieving strip to unfold. Adjacent pressure-relieving strips are connected to their components by connecting strips in a sliding manner. During the unfolding process, the ribs extend, and the expansion of the rubber sleeve is further buffered by the buffer component. After the water hammer phenomenon subsides, the pressure-relieving strips can be retracted by the rebound of the ribs. The above structure further improves the buffering and pressure-reducing effect of the device, while reducing the force and unfolding range of the rubber sleeve, and avoiding its deformation and damage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the outer cylinder of this utility model; Figure 4 This is a schematic diagram of the rubber sleeve structure of this utility model; Figure 5 This is a schematic diagram of the buffer component of this utility model; Figure 6 This is a schematic diagram of the unfolded state of this utility model; Figure 7 This is a schematic diagram showing the disassembled state of this utility model; Figure 8 This is a schematic diagram of the connecting strip structure of this utility model.

[0015] The following are the labels in the diagram: 1. Outer cylinder; 101. Air chamber; 102. Port; 2. End plate; 3. Rubber sleeve; 301. Pleated part; 4. Buffer assembly; 401. Pressure relief strip; 402. Upright pole; 403. Connecting strip; 404. Interface; 405. Adjustment groove; 406. Adjustment rod; 407. Rib; 5. Inner tube; 501. Side hole. Detailed Implementation

[0016] like Figures 1 to 5As shown, this utility model relates to a buffer and pressure reduction device for the outlet of a rainwater and sewage lifting pump station, comprising an outer cylinder 1 and a buffer assembly 4. End plates 2 are bolted to both ends of the outer cylinder 1. An inner tube 5 is fixed inside the outer cylinder 1, and side holes 501 are arranged in a ring array on the inner tube 5. A concave air cavity 101 is provided inside the outer cylinder 1, corresponding to the inner tube 5. A rubber sleeve 3 is provided inside the air cavity 101 and fits onto the outside of the inner tube 5. The inner opening of the end plate 2 is designed in an inclined bucket shape, and a sealing ring is provided at the inner opening. Ports 102 are provided at both ends of the outer cylinder 1, and the ports 102 connect to the end plate 2. The inner opening and inner tube 5, and the end of the rubber sleeve 3 are fixed to the inner side of the port 102 of the outer cylinder 1. Both ends of the rubber sleeve 3 are provided with pleats 301. The buffer assembly 4 is sleeved on the outside of the rubber sleeve 3. The liquid flows inside the inner tube 5. When the pump stops and water hammer occurs, the pressure inside the pipe increases. The high pressure passes through the side hole 501 and causes the rubber sleeve 3 to bulge, thereby reducing the pressure and reducing the impact of water hammer on the liquid pipeline. The pleats 301 at both ends of the rubber sleeve 3 can unfold when the pressure is too high, which can increase the expansion space of the rubber sleeve 3, so that the device can withstand higher pressure and ensure the service life of the device.

[0017] like Figures 3 to 8 As shown, this utility model relates to a buffer and pressure reduction device for the outlet of a rainwater and sewage lifting pump station, including an outer cylinder 1 and a buffer assembly 4. The buffer assembly 4 is located inside the air chamber 101 of the outer cylinder 1. The buffer assembly 4 consists of pressure-reducing strips 401, uprights 402, and connecting strips 403. There are two sets of pressure-reducing strips 401, and the two sets of pressure-reducing strips 401 are fixedly connected by uprights 402. There are four pressure-reducing strips 401 in a single set, which are arranged in a staggered ring shape. The connecting strips 403 are located between adjacent pressure-reducing strips 401. Adjustment grooves 405 are opened at both ends of the pressure-reducing strips 401, and interfaces 404 are opened on the side of the pressure-reducing strips 401. The ends of the uprights 402 are fixed in the corresponding interfaces 404. Adjustment rods 406 are fixed through both ends of the connecting strips 403. One end of the adjusting rod 406 is slidably installed in the adjusting groove 405 of the corresponding pressure-relieving strip 401, and the other end of the adjusting rod 406 is fixed with a rib 407. The outer end of the rib 407 is fixed to the end of the corresponding pressure-relieving strip 401. During the expansion and unfolding of the rubber sleeve 3, the squeezing rod 402 drives the pressure-relieving strip 401 to unfold. Adjacent pressure-relieving strips 401 are slidably connected to their components through the connecting strip 403. During the unfolding process, the rib 407 extends, and the expansion of the rubber sleeve 3 is further buffered by the buffer component 4. After the water hammer phenomenon subsides, the pressure-relieving strip 401 can be contracted by the rebound of the rib 407. The above structure further improves the buffering and pressure-reducing effect of the device, while reducing the force and unfolding range of the rubber sleeve 3, and avoiding its deformation and damage.

[0018] Working Principle: This embodiment provides a buffer and pressure reducing device for the outlet of a rainwater and sewage lifting pump station. During use, the liquid flows inside the inner pipe 5. When the pump stops and water hammer occurs, the pressure inside the pipe increases. The high pressure passes through the side hole 501 and causes the rubber sleeve 3 to swell, thereby reducing the pressure and reducing the impact of water hammer on the liquid pipeline. The rubber sleeve 3 has pleats 301 at both ends. When the pressure is too high, the pleats 301 unfold, which can increase the expansion space of the rubber sleeve 3, allowing the device to withstand higher pressure and ensuring the service life of the device. During the expansion and unfolding process of the rubber sleeve 3, the squeeze rod 402 drives the pressure-reducing strip 401 to unfold. Adjacent pressure-reducing strips 401 are connected to their components by connecting strips 403. During the unfolding process, the ribs 407 extend, and the expansion of the rubber sleeve 3 is further buffered by the buffer component 4. After the water hammer phenomenon subsides, the pressure-reducing strip 401 can be contracted by the rebound of the ribs 407.

[0019] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A buffer and pressure reducing device for the outlet of a rainwater and sewage lifting pump station, comprising an outer cylinder (1) and a buffer assembly (4), characterized in that: Both ends of the outer cylinder (1) are fixed with end plates (2) by bolts. An inner tube (5) is fixed inside the outer cylinder (1), and side holes (501) are arranged in a ring array on the inner tube (5). A concave air cavity (101) is provided inside the outer cylinder (1), and the air cavity (101) corresponds to the inner tube (5). A rubber sleeve (3) is provided inside the air cavity (101), and the rubber sleeve (3) is sleeved on the outside of the inner tube (5). The buffer assembly (4) is located in the air cavity (101) of the outer cylinder (1). The buffer assembly (4) consists of pressure-relieving strips (401), uprights (402) and connecting strips (403). There are two sets of pressure-relieving strips (401), and the two sets of pressure-relieving strips (401) are fixedly connected by uprights (402). There are four pressure-relieving strips (401) in a single set, and they are arranged in a ring shape with alternating heights. The connecting strips (403) are located between adjacent pressure-relieving strips (401).

2. The rainwater and sewage lifting pump station outlet buffer and pressure reducing device according to claim 1, characterized in that: The inner opening of the end plate (2) is designed in an inclined bucket shape and a sealing ring is provided at the inner opening. Both ends of the outer cylinder (1) are provided with ports (102), and the ports (102) connect the inner opening of the end plate (2) and the inner tube (5).

3. The rainwater and sewage lifting pump station outlet buffer and pressure reducing device according to claim 2, characterized in that: The end of the rubber sleeve (3) is fixed inside the port (102) of the outer cylinder (1). Both ends of the rubber sleeve (3) are provided with pleats (301). The buffer assembly (4) is sleeved on the outside of the rubber sleeve (3).

4. The rainwater and sewage lifting pump station outlet buffer and pressure reducing device according to claim 3, characterized in that: The pressure relief strip (401) has adjustment grooves (405) at both ends, and the pressure relief strip (401) has an interface (404) on its side, and the end of the upright (402) is fixed in the corresponding interface (404).

5. The rainwater and sewage lifting pump station outlet buffer and pressure reducing device according to claim 4, characterized in that: Both ends of the connecting strip (403) are fixed with adjusting rods (406), and one end of the adjusting rod (406) is slidably installed in the adjusting groove (405) of the corresponding pressure-relieving strip (401).

6. The rainwater and sewage lifting pump station outlet buffer and pressure reducing device according to claim 5, characterized in that: The other end of the adjusting rod (406) is fixed with a rib (407), and the outer end of the rib (407) is fixed to the end of the corresponding pressure relief strip (401).

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