A special pipeline for water supply equipment

Abstract

This invention discloses a dedicated pipeline for water supply equipment, including a main pipe. An outlet pipe connection structure and a valve body connection structure are located on opposite sides of the main pipe. The outlet pipe connection structure and the valve body connection structure each include a branch pipe A connected to flange A and a branch pipe B connected to flange B, respectively. Branch pipe A extends into the main pipe and is fitted with a positioning retaining ring. A valve stem is fitted inside the positioning retaining ring, and a valve disc is fixedly connected to the valve stem. A blind cap is fixedly connected to flange B of branch pipe B. An adjusting shaft is threaded to the center of the blind cap. An installation hole is provided at the inner end of the adjusting shaft, into which the valve stem is inserted. A check spring is fitted between the end of the valve stem and the adjusting shaft. The check spring pushes the valve stem, causing the valve disc to cover the port of branch pipe A extending into the main pipe, forming a check valve structure. This invention retains the functions of on / off switching and check valve operation, while occupying a small area, being simple to install, and easy to maintain. This invention also saves many supporting components, greatly reducing material costs.

Description

Technical Field

[0001] This invention relates to the field of water supply equipment, and more particularly to a special pipeline for water supply equipment. Background Technology

[0002] Existing dedicated pipelines for water supply equipment typically consist of a main pipe, butterfly valves, check valves, and connecting branch pipes.

[0003] There are generally two common installation layout methods for dedicated pipelines for existing water supply equipment. One installation layout method is as follows: Figure 1 As shown, elbow 2 needs to be connected from the outlet of the liquid outlet pipe, and then it is installed vertically. After that, check valve 4, connecting branch pipe 5, butterfly valve 3 and main pipe 1 are installed in sequence. This arrangement can save floor space, but it requires additional materials for connecting elbows. At the same time, check valve, connecting branch pipe, butterfly valve and main pipe are still required for connection. The installation method is relatively complicated, with many parts, wasted materials and high cost.

[0004] Another installation and layout method is as follows Figure 2 As shown, the branch pipe is directly connected from the outlet of the liquid outlet, followed by the installation of the check valve, connecting branch pipe, butterfly valve, and main pipe in sequence. This horizontal installation layout increases the floor space required, and the installation of the check valve, connecting branch pipe, and butterfly valve is relatively complex, involves more parts, wastes materials, and is costly. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention designs a special pipeline for water supply equipment.

[0006] The present invention adopts the following technical solution:

[0007] A special pipeline for water supply equipment includes a main pipe. An outlet pipe connection structure and a valve body connection structure are provided on opposite sides of the main pipe. The outlet pipe connection structure and the valve body connection structure each include a branch pipe A connected to flange A and a branch pipe B connected to flange B, respectively. Branch pipe A extends into the main pipe. A positioning retainer is installed inside branch pipe A, and a valve stem is sleeved inside the positioning retainer. A valve disc is fixedly connected to the valve stem. A blind cover is fixedly connected to flange B of branch pipe B. An adjusting shaft is threaded to the center of the blind cover. An installation hole is provided at the inner end of the adjusting shaft, and a valve stem is inserted into the installation hole. A check spring is sleeved between the end of the valve stem and the adjusting shaft. The check spring pushes the valve stem, causing the valve disc to cover the port of branch pipe A extending into the main pipe, forming a check valve structure.

[0008] Preferably, the blind cover is fixedly connected to the flange B by bolts.

[0009] Preferably, a flange sealing gasket is connected between the blind cover and flange B.

[0010] Preferably, a positioning ring is installed inside the branch pipe B, and the positioning ring is fitted outside the adjusting shaft to limit the axial movement of the adjusting shaft.

[0011] Preferably, branch pipe A is welded to flange A and branch pipe B is welded to flange B respectively.

[0012] Preferably, branch pipe A is welded and fixed to branch pipe B and the main pipe respectively.

[0013] Preferably, a sealing gasket is fixedly connected to the inner side of the valve disc by a washer and an elastic retaining ring, and the valve disc presses the sealing gasket to cover the port of the branch pipe A that extends into the main pipe for sealing.

[0014] Preferably, a retaining ring is installed between the positioning ring and the blind cover, and a sealing ring is fitted between the retaining ring and the blind cover on the adjusting shaft.

[0015] The beneficial effects of the present invention are: (1) The present invention retains the functions of switching on and off and checking back, while occupying a small area, simple to install and easy to maintain; (2) The present invention saves a lot of supporting components and greatly reduces material costs. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a vertical installation layout for existing water supply equipment pipelines.

[0017] Figure 2 This is a structural diagram of a horizontal installation layout for existing water supply equipment pipelines.

[0018] Figure 3 This is a schematic diagram of the layout and installation of a special pipeline for the water supply equipment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the present invention;

[0020] Figure 5 yes Figure 4 A cross-sectional view along the AA direction;

[0021] Figure 6 yes Figure 4 A top view;

[0022] Figure 7 This is a flow velocity diagram of the existing water supply equipment's dedicated pipelines;

[0023] Figure 8 This is the water flow velocity diagram of the present invention;

[0024] Figure 9 It is a static pressure diagram of the existing dedicated pipelines for water supply equipment;

[0025] Figure 10 This is the static pressure diagram of the present invention;

[0026] Figure 11This is a statistical table of total pressure damage from existing dedicated water supply equipment pipelines and practical tests of this invention.

[0027] Figure 12 This simulates the load conditions under which the check valve is opened during the operation of the water pump in the existing dedicated pipeline of the water supply equipment.

[0028] Figure 13 This invention simulates the load conditions of the valves in the water supply pipeline when the water pump is running.

[0029] In the diagram: 1. Main pipe, 2. Elbow, 3. Butterfly valve, 4. Check valve, 5. Connecting branch pipe, 6. Flange B, 7. Flange gasket, 8. Locating retaining ring, 9. Branch pipe A, 10. Valve disc, 11. Adjusting shaft, 12. Locating ring, 13. Check spring, 14. Retaining ring, 15. Sealing ring, 16. Blind cap, 17. Flange A, 18. Elastic retaining ring, 19. Gasket, 20. Sealing gasket, 21. Valve stem, 22. Branch pipe B. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0031] Example: Figure 3-6 As shown, a special pipeline for water supply equipment includes a main pipe 1. An outlet pipe connection structure and a valve body connection structure are located on opposite sides of the main pipe. The outlet pipe connection structure and the valve body connection structure respectively include a branch pipe A9 connected to flange A17 and a branch pipe B22 connected to flange B6. Branch pipe A extends into the main pipe, and a positioning retaining ring 8 is installed inside branch pipe A. A valve stem 21 is sleeved inside the positioning retaining ring, and a valve disc 10 is fixedly connected to the valve stem. A blind cover 16 is fixedly connected to flange B of branch pipe B. An adjusting shaft 11 is threaded to the center of the blind cover. An installation hole is provided at the inner end of the adjusting shaft, and a valve stem is inserted into the installation hole. A check spring 13 is sleeved between the end of the valve stem and the adjusting shaft. The check spring pushes the valve stem, causing the valve disc to cover the port of branch pipe A extending into the main pipe, forming a check valve structure. The water pump is fixedly connected to flange A by bolts.

[0032] The blind cover and flange B are bolted together. A flange gasket 7 connects the blind cover and flange B. A locating ring 12 is installed inside branch pipe B, which fits around the adjusting shaft to limit its axial movement. Branch pipe A is welded to flange A, and branch pipe B is welded to flange B. Branch pipe A is welded to branch pipe B and to the main pipe.

[0033] A sealing gasket 20 is fixedly connected to the inner side of the valve disc by a gasket 19 and an elastic retaining ring 18. The valve disc presses the sealing gasket to cover the port of the branch pipe A that extends into the main pipe for sealing. A retaining ring 14 is installed between the positioning ring and the blind cover, and a sealing ring 15 is fitted between the retaining ring and the blind cover on the outside of the adjusting shaft.

[0034] When using the dedicated pipeline for this water supply equipment, the adjusting shaft can be adjusted. When the adjusting shaft is adjusted to the bottom, the valve disc slides up and down due to the check spring and water flow pressure, performing the check valve function. Further adjustment of the adjusting shaft position adjusts the rebound torque, limiting the outlet water pressure. When the adjusting shaft is adjusted to the top, it presses the valve disc to its limit, keeping the valve permanently closed, performing the on / off function of a butterfly valve. This invention retains both on / off and check functions, while also occupying a small area, being simple to install, and easy to maintain.

[0035]

[0036] Table 1

[0037] Existing water supply equipment pipelines mainly consist of pumps, valves, pipes, flanges, and matching standard parts assembled in series, which takes up a considerable amount of space. Using the valve-type pipeline of this invention can replace the original valves. As shown in Tables 1 and 2, parts 1-5 are identical to those in the prior art and the innovative technology; the remaining parts of this invention save many accessories. Furthermore, in terms of floor space, this invention saves 1 / 2 of the floor space, approximately 2 / 5 of the material cost for flanges and connecting standard parts, and 1 / 3 of the installation labor cost.

[0038] Through internal flow simulation using SolidWorks Flow Simulation, in the open state, the innovative technology of this invention outperforms existing technologies in terms of total pressure loss, flow velocity, and static pressure.

[0039] Under the same flow velocity of 1.6 m / s. For example... Figure 7 As shown, existing dedicated pipelines for water supply equipment experience increased pipe losses due to the narrowing of the flow path as water passes through the check valve, leading to increased flow velocity. For example... Figure 8 As shown, the special pipe for water supply equipment of the present invention allows water to flow smoothly from the branch pipe into the main pipe.

[0040] Under the same flow velocity of 1.6 m / s. For example... Figure 9 As shown, in existing dedicated pipelines for water supply equipment, pressure concentrates on the valve disc due to the narrow passage of the check valve. For example... Figure 10 As shown, the pressure release of the special pipeline for the water supply equipment of the present invention is good.

[0041] like Figure 11 As shown, the total pressure loss of the special pipeline for the water supply equipment of the present invention is less than that of the prior art.

[0042] When the water pump of the water supply equipment starts with frequency conversion, the pump requires an additional load to open the damped check valve. The adjustment shaft 11 in the special pipeline of the innovative water supply equipment can slide up and down to adjust the feedback damping of the check spring 13, so that the appropriate feedback damping can be adjusted under different water supply conditions (when the occupancy rate is different).

[0043] The check spring 13 can be a non-linear spring. In conjunction with the adjustment shaft 11's opening stroke, as the pump runs, the damping force of the check spring 13, pushed by the valve disc 10, increases, further reducing the additional load and improving the pump's operating efficiency. When the pump stops, the damping force of the check spring 13 returning to its original position decreases, achieving a silent operation when the valve disc 10 returns to its original position. This is not achievable in existing technologies.

[0044] like Figure 12 and Figure 13 The figures show the load conditions of the existing water supply equipment's dedicated pipeline when the pump is running with the check valve open, and the load conditions of the present invention when the pump is running with the dedicated water supply pipeline valve open. It can be seen that the load conditions of the present invention when the dedicated water supply pipeline valve is opened are more stable and the impact is smaller.

[0045] Besides water pumps, check valves are among the most frequently used components in water supply equipment. In existing technology, check valves are simply clamped into the pipe flange; if the check valve becomes stuck, it must be removed for repair. However, with innovative technology, when a check valve becomes stuck in a dedicated water supply pipeline, it can be removed for repair without disassembly. The sticking can be eliminated by adjusting the shaft stroke and the rebound damping torque.

[0046] When a foreign object gets stuck in valve disc 10, existing check valves can only be used normally after being passively removed, the foreign object cleaned, and then reinstalled. The innovative water supply pipeline allows for repeated opening and closing of the adjusting shaft, forcibly repositioning the foreign object and dislodging it from valve disc 10, thus facilitating repairs.

[0047] It is evident that the innovative technology of this invention is superior to existing technologies in later maintenance and use.

[0048] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A dedicated pipeline for water supply equipment, comprising a main pipe, characterized in that, The main pipe is provided with an outlet pipe connection structure and a valve body connection structure on opposite sides. The outlet pipe connection structure and the valve body connection structure respectively include a branch pipe A and a flange A and a branch pipe B and a flange B. The branch pipe A extends into the main pipe. A positioning retainer is installed in the branch pipe A. A valve stem is sleeved in the positioning retainer. A valve disc is fixedly connected to the valve stem. A blind cover is fixedly connected to the flange B, which is connected to the outer end of the branch pipe B in the main pipe. An adjusting shaft is threaded to the center of the blind cover. An installation hole is provided in the inner end of the adjusting shaft. The valve stem is inserted into the installation hole. A check spring abuts between the end of the valve stem and the adjusting shaft. The check spring pushes the valve stem to drive the valve disc to cover the port of the branch pipe A that extends into the main pipe, forming a check valve structure.

2. The special pipeline for water supply equipment according to claim 1, characterized in that, The blind cover is fixedly connected to flange B by bolts.

3. The special pipeline for water supply equipment according to claim 2, characterized in that, A flange sealing gasket connects the blind cover to flange B.

4. A special pipeline for water supply equipment according to claim 1, characterized in that, A positioning ring is installed inside the branch pipe B. The positioning ring is fitted around the adjusting shaft to limit the axial movement of the adjusting shaft.

5. A special pipeline for water supply equipment according to claim 1, characterized in that, Branch pipe A is welded to flange A, and branch pipe B is welded to flange B respectively.

6. A special pipeline for water supply equipment according to claim 1, characterized in that, Branch pipe A is welded and fixed to branch pipe B and the main pipe respectively.

7. A special pipeline for water supply equipment according to claim 1, characterized in that, A sealing gasket is fixedly connected to the inner side of the valve disc by a washer and an elastic retaining ring. The valve disc presses the sealing gasket to cover the port of the branch pipe A that extends into the main pipe for sealing.

8. A special pipeline for water supply equipment according to claim 4, characterized in that, A retaining ring is installed between the positioning ring and the blind cover, and a sealing ring is fitted between the retaining ring and the blind cover on the outside of the adjusting shaft.

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