Double-channel check valve and sewage lifting device

Abstract

The utility model relates to the technical field of valves, and discloses a double-channel check valve and a sewage lifting device. The double-channel check valve comprises a base, a valve body and a valve element, the base is provided with a valve seat, the valve seat is provided with two fluid outlets, the valve body is arranged on the base, the valve element comprises a connecting part and valve clacks, the two valve clacks can rotate relative to the connecting part, and the connecting part is arranged on the valve seat. The two-channel check valve is applied to a sewage lifting device, the sewage pumps are arranged on the base, and the two sewage pumps are communicated with the two fluid channels of the base respectively. When the sewage pump works, the valve clack of the valve element is turned upwards to be opened, and sewage is discharged through the valve body and the water outlet pipeline; when the sewage pump stops, the valve clack turns over under the action of water stored in the pipeline, and the fluid outlet of the valve seat is blocked. According to the sewage lifting device, the outlets of the two sewage pumps are integrated with the water outlet pipeline through the double-channel check valve, so that the sewage lifting device is more compact in structure and small in occupied space, and the equipment cost is also saved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a dual-channel check valve and a sewage lifting device. Background Technology

[0002] A sewage lifting station (sewage lift unit) is a system consisting of a sewage pump, a collection tank, and related pipe fittings and valves. It is used to lift and transport wastewater that is below the sewer line or far from the municipal pipe network. It can be used in basements and locations far from drainage risers where gravity drainage is not possible, as well as for discharging wastewater from sanitary ware.

[0003] Sewage lifting devices buried underground are generally equipped with two sewage pumps (lifting pumps) to prevent sewage from being unable to be discharged due to pump failure.

[0004] The inventors of this application have discovered that the two sewage pumps of the current sewage lifting device are connected to the outside through valve bodies and pipelines, which is complex in structure and occupies a large space. Utility Model Content

[0005] The purpose of this invention is to provide a dual-channel check valve and a sewage lifting device to solve the problems mentioned in the background art.

[0006] This utility model embodiment provides a dual-channel check valve, including: a base, a valve body, and a valve core;

[0007] The base is provided with two fluid channels;

[0008] The base is provided with a valve seat, and the valve seat is provided with two fluid outlets, which are respectively connected to two fluid channels.

[0009] The top surface of the fluid outlet is inclined.

[0010] The valve body is mounted on the base, and the valve chamber of the valve body is connected to the two fluid outlets. The valve body is used to connect to the water outlet pipeline.

[0011] The valve core includes: a connecting part and two valve discs;

[0012] The two valve discs are respectively disposed on both sides of the connecting part, and the valve discs are rotatable relative to the connecting part. The connecting part is disposed on the valve seat, and the two valve discs are respectively used to close the two fluid outlets.

[0013] Based on the above scheme, the dual-channel check valve of this utility model comprises a base, a valve body, and a valve core. The base has two fluid channels and a valve seat, with two fluid outlets of the valve seat connected to the two fluid channels respectively. The valve body is mounted on the base, and the valve core includes a connecting part and two valve discs. The two valve discs are located on both sides of the connecting part, which is mounted on the valve seat. The two valve discs are used to close the two fluid outlets respectively. This dual-channel check valve is installed on the collection tank of a sewage lifting device. Two sewage pumps are mounted on the base, and the suction channels of the sewage pumps are connected to the two fluid channels of the base respectively. The top of the valve body is connected to the outlet pipe. When the sewage pumps are turned on, under water pressure, the valve discs of the valve core flip upwards and open, allowing sewage to be discharged through the valve body and the outlet pipe. When the sewage pumps are turned off, the valve discs of the valve core flip downwards under the action of water in the upper pipe, blocking the fluid outlet of the valve seat and closing the valve body (pipeline). By integrating the outlets of the two sewage pumps with the effluent pipeline through a dual-channel check valve, the sewage lifting device becomes more compact, occupies less space, and saves on equipment costs.

[0014] One feasible solution also includes: a fixing rod;

[0015] The valve body is provided with a mounting groove, and the valve seat is provided with a limiting groove;

[0016] The connecting part is provided with a limiting protrusion for embedding into the limiting groove;

[0017] The fixing rod is embedded in the mounting groove and abuts against the connecting part.

[0018] In one feasible solution, the connecting part is provided with an arc-shaped groove, and the fixing rod abuts against the arc-shaped groove.

[0019] In one feasible embodiment, the valve disc is provided with an annular groove to form a sealing lip at the bottom end of the valve disc, the sealing lip being used to abut against the valve seat.

[0020] In one feasible embodiment, the cross-section of the annular groove is V-shaped.

[0021] In one feasible solution, a steel plate is embedded at the bottom of the valve disc.

[0022] In one feasible solution, the valve body is provided with an inspection door.

[0023] One feasible solution also includes: jacking bolts.

[0024] The valve disc is provided with a protruding block;

[0025] The jacking bolt engages with the valve body, and when rotated, the jacking bolt pushes the protruding block, causing the valve disc to move away from the fluid outlet.

[0026] In one feasible embodiment, the valve body is provided with a first flange portion and a second flange portion;

[0027] The first flange is used to connect to the water outlet pipe, and the second flange is used to connect to the base.

[0028] This utility model embodiment also provides a sewage lifting device, including: a water collection tank, a sewage pump, and a dual-channel check valve in any of the above designs;

[0029] The base is mounted on the water collection tank;

[0030] The system has two sewage pumps, which are mounted on the base and connected to the two fluid channels respectively. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0032] Figure 1 This is a schematic diagram of the dual-channel check valve in Embodiment 1 of this utility model;

[0033] Figure 2 This is a cross-sectional schematic diagram of the dual-channel check valve in Embodiment 1 of this utility model;

[0034] Figure 3 This is a schematic diagram of the base in Embodiment 1 of this utility model;

[0035] Figure 4 This is a schematic diagram of the valve core assembly in Embodiment 1 of this utility model;

[0036] Figure 5 This is a schematic diagram of the valve body in Embodiment 1 of this utility model;

[0037] Figure 6 This is a schematic diagram of the valve core in Embodiment 1 of this utility model;

[0038] Figure 7 As in Embodiment 1 of this utility model Figure 6 Enlarged view of point A in the image;

[0039] Figure 8 This is a schematic diagram of the sewage lifting device in Embodiment 2 of this utility model;

[0040] Figure 9 This is another schematic diagram of the sewage lifting device in Embodiment 2 of this utility model.

[0041] Numbering on the map:

[0042] 1. Base; 101. Fluid passage; 11. Valve seat; 111. Fluid outlet; 112. Limiting groove; 2. Valve body; 21. Mounting groove; 22. Inspection door; 23. Threaded through hole; 24. First flange; 25. Second flange; 3. Valve core; 31. Connecting part; 311. Limiting protrusion; 312. Arc-shaped groove; 32. Valve disc; 321. Annular groove; 322. Sealing lip; 323. Steel plate; 324. Protrusion; 4. Fixing rod; 5. Top bolt; 6. Sewage pump. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0047] As described in the background section of this application, underground sewage lifting devices are generally equipped with two sewage pumps (lifting pumps) to prevent sewage from failing to be discharged due to pump malfunction.

[0048] The inventors of this application have discovered that the two sewage pumps of the current sewage lifting device are connected to the outside through valve bodies and pipelines, which is complex in structure, occupies a large space, and has high equipment cost.

[0049] To address the aforementioned problems, the inventors of this application have proposed a technical solution, the specific embodiments of which are as follows:

[0050] Example 1

[0051] Figure 1 This is a schematic diagram of the dual-channel check valve in Embodiment 1 of this utility model. Figure 2 This is a cross-sectional schematic diagram of the dual-channel check valve in Embodiment 1 of this utility model. Figure 3 This is a schematic diagram of the base in Embodiment 1 of this utility model. Figure 4 This is a schematic diagram of the valve core assembly in Embodiment 1 of this utility model. Figure 5 This is a schematic diagram of the valve body in Embodiment 1 of this utility model. Figure 6 This is a schematic diagram of the valve core in Embodiment 1 of this utility model. Figure 7 As in Embodiment 1 of this utility model Figure 6 Enlarged view of point A in the image.

[0052] like Figures 1 to 7 As shown, the dual-channel check valve of this embodiment includes: a base 1, a valve body 2, and a valve core 3.

[0053] The base 1 has two fluid channels 101 inside, and the inlets of the two fluid channels 101 are located at the bottom of the left and right sides of the base 1, respectively.

[0054] The top of the base 1 is provided with a valve seat 11, which has two fluid outlets 111. The two fluid outlets 111 of the valve seat 11 are respectively connected to the outlets of the two fluid channels 101 of the base 1, so that the two fluid outlets 111 of the valve seat 11 are respectively connected to the inlets of the two fluid channels 101 of the base 1.

[0055] The top surface of the fluid outlet 111 of the valve seat 11 is an inclined slope, and the bottom end of the slope is located on the side near the middle of the valve seat 11.

[0056] The valve body 2 is mounted on the base 1, and the valve seat 11 is located inside the valve cavity of the valve body 2. The valve cavity of the valve body 2 is connected to the two fluid outlets 111 of the valve seat 11. The top of the valve body 2 is used to connect to the water outlet pipe.

[0057] The valve core 3 includes a connecting part 31 and a valve disc 32.

[0058] Two valve discs 32 are provided, which are mirror-symmetrically arranged on the left and right sides of the connecting part 31. The two valve discs 32 are connected through the connecting part 31, and the two valve discs 32 can rotate relative to the connecting part 31 respectively. The connecting part 31 of the valve core 3 is provided on the valve seat 11 of the base 1. The two valve discs 32 are respectively located above the two fluid outlets 111 of the valve seat 11, and are used to close the fluid outlets 111.

[0059] In this embodiment, a dual-channel check valve is installed on the outlet pipe of the sewage lifting device, and the two fluid channels of the valve seat are respectively connected to the output ends of two sewage pumps.

[0060] When the sewage pump starts working, under the action of water pressure, the valve disc of the valve core flips upward and opens, and sewage is discharged through the valve body and the outlet pipe. When the sewage pump stops and closes, the valve disc of the valve core flips downward under the action of water in the upper outlet pipe, and covers the valve seat. The valve core blocks the fluid outlet of the valve seat, so that the valve body (pipeline) is closed and the water in the outlet pipe will not flow back.

[0061] The base has two fluid channels that are connected to two sewage pumps, allowing the two sewage pumps to share a single check valve and outlet pipe.

[0062] As can be seen from the above, the dual-channel check valve of this embodiment comprises a base, a valve body, and a valve core. The base has two fluid channels and a valve seat, with two fluid outlets of the valve seat connected to the two fluid channels respectively. The valve body is mounted on the base, and the valve core includes a connecting part and two valve discs. The two valve discs are located on both sides of the connecting part, which is mounted on the valve seat. The two valve discs are used to close the two fluid outlets respectively. In this embodiment, the dual-channel check valve is mounted on the collection tank of a sewage lifting device. Two sewage pumps are mounted on the base, and the suction channels of the sewage pumps are connected to the two fluid channels of the base respectively. The top of the valve body is connected to the outlet pipe. When the sewage pumps are turned on, under the action of water pressure, the valve discs of the valve core flip upward and open, allowing sewage to be discharged through the valve body and the outlet pipe. When the sewage pumps are turned off, the valve discs of the valve core flip downward under the action of water in the upper pipe, blocking the fluid outlet of the valve seat and closing the valve body (pipeline). By integrating the outlets of the two sewage pumps with the effluent pipeline through a dual-channel check valve, the sewage lifting device becomes more compact, occupies less space, and saves on equipment costs.

[0063] Optionally, the dual-channel check valve in this embodiment also includes a fixing rod 4.

[0064] The valve body 2 has mounting grooves 21 on both sides of its inner wall, and the valve seat 11 has a limiting groove 112 in the middle of its top surface.

[0065] The bottom surface of the connecting part 31 of the valve core 3 is provided with a limiting protrusion 311.

[0066] The limiting protrusion 311 of the connecting part 31 is embedded in the limiting groove 112 of the valve seat 11, and the two ends of the fixing rod 4 are embedded in the mounting groove 21 of the valve body 2. The fixing rod 4 abuts against the top surface of the connecting part 31, thus fixing the connecting part 31 of the valve core 3 to the valve seat 11.

[0067] Furthermore, in this embodiment, the dual-channel check valve has an arc-shaped groove 312 in the middle of the top surface of the connecting part 31, and the fixing rod 4 abuts against the arc-shaped groove 312 of the connecting part 31.

[0068] By setting the arc-shaped groove 312, the connecting part 31 can easily bend and deform at the arc-shaped groove 312, so as to facilitate the rotation of the valve discs 32 on both sides relative to the connecting part 31.

[0069] Furthermore, such as Figure 2 , Figure 6 and Figure 7 As shown, in this embodiment of the dual-channel check valve, an annular groove 321 is provided on the circular sidewall at the bottom of the valve disc 32, thereby forming a sealing lip 322 at the bottom end of the valve disc 32.

[0070] When the valve disc 32 covers the fluid outlet 111 of the valve seat 11, the sealing lip 322 of the valve disc 32 abuts against the top end face of the valve seat 11. The annular groove 321 of the valve disc 32 provides cushioning, which reduces the impact force between the valve disc 32 and the valve seat 11 and reduces the noise generated by the valve disc 32 when it is closed.

[0071] Furthermore, in this embodiment, the cross-section of the annular groove 321 of the valve disc 32 in the dual-channel check valve is V-shaped, which gives the fluid outlet 111 of the valve seat 11 a better sealing effect.

[0072] Furthermore, in this embodiment, the bottom of the valve disc 32 of the dual-channel check valve is embedded with a steel plate 323.

[0073] A steel plate 323 is embedded in the bottom of the valve disc 32 and fixed by a connector. The steel plate 323 increases the rigidity and weight of the valve disc 32. When the sewage pump stops working, the valve disc 32 can flip downward more quickly, closing the fluid outlet 111 of the valve seat 11.

[0074] Optionally, in this embodiment, the dual-channel check valve has an inspection door 22 on the side wall of the valve body 2.

[0075] The inspection door 22 is detachably mounted on the valve body 2 by means of a fastener and is sealed to the valve body 2, which facilitates the maintenance of the valve body 2.

[0076] Furthermore, the dual-channel check valve in this embodiment also includes: a push-opening bolt 5.

[0077] The side wall of the valve disc 32 is provided with a protrusion 324.

[0078] The side wall of the valve body 2 is provided with a threaded through hole 23. The push-opening bolt 5 is engaged in the threaded through hole 23 of the valve body 2. When the push-opening bolt 5 is rotated, it is used to push the protruding block 324 of the valve disc 32, so that the valve disc 32 is away from the fluid outlet 111 of the valve seat 11.

[0079] In this embodiment, the jacking bolt engages with the valve body. When the check valve requires maintenance, the check valve is closed, and the valve disc of the valve core rests against the valve seat. At this time, rotating the jacking bolt inward causes it to abut against and push the protruding block of the valve disc, causing the valve disc of the valve core to rotate upward and leave the valve seat. The water in the upper pipeline flows back through the fluid outlet of the valve seat, thereby emptying the water in the pipeline. Then, the inspection door is opened for convenient maintenance of the valve body.

[0080] Optionally, in this embodiment, the dual-channel check valve has a first flange 24 at the top of the valve body 2, which is used to connect to the outlet pipe.

[0081] The bottom end of the valve body 2 is provided with a second flange 25, which is used to connect with the base 1 to facilitate the connection and fixation of the valve body 2.

[0082] Example 2

[0083] Figure 8 This is a schematic diagram of the sewage lifting device in Embodiment 2 of this utility model. Figure 9 This is another schematic diagram of the sewage lifting device in Embodiment 2 of this utility model.

[0084] This utility model also provides a sewage lifting device.

[0085] like Figure 8 and Figure 9 As shown, the sewage lifting device of this embodiment includes: a water collection tank, a sewage pump 6, and a dual-channel check valve as described in the above embodiment.

[0086] The base 1 is set on the water collection tank (not shown in the figure).

[0087] Two sewage pumps 6 are provided, and the two sewage pumps 6 are mounted on the base 1. The suction channels of the two sewage pumps 6 are respectively connected to the two fluid channels 101 of the base 1. When the two sewage pumps are working, sewage can be discharged through the same double-channel check valve and outlet pipe.

[0088] In this utility model, unless otherwise explicitly specified and limited, the first feature being "on" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium.

[0089] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "under," and "beneath" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0090] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dual-channel check valve, characterized in that, include: Base, valve body, and valve core; The base is provided with two fluid channels; The base is provided with a valve seat, and the valve seat is provided with two fluid outlets, which are respectively connected to two fluid channels. The top surface of the fluid outlet is inclined. The valve body is mounted on the base, and the valve chamber of the valve body is connected to the two fluid outlets. The valve body is used to connect to the water outlet pipeline. The valve core includes: a connecting part and two valve discs; The two valve discs are respectively disposed on both sides of the connecting part, and the valve discs are rotatable relative to the connecting part. The connecting part is disposed on the valve seat, and the two valve discs are respectively used to close the two fluid outlets.

2. The dual-channel check valve according to claim 1, characterized in that, Also includes: Fixed rod; The valve body is provided with a mounting groove, and the valve seat is provided with a limiting groove; The connecting part is provided with a limiting protrusion for embedding into the limiting groove; The fixing rod is embedded in the mounting groove and abuts against the connecting part.

3. The dual-channel check valve according to claim 2, characterized in that, The connecting part is provided with an arc-shaped groove, and the fixing rod abuts against the arc-shaped groove.

4. The dual-channel check valve according to claim 2, characterized in that, The valve disc has an annular groove to form a sealing lip at the bottom end of the valve disc, the sealing lip being used to abut against the valve seat.

5. The dual-channel check valve according to claim 4, characterized in that, The cross-section of the annular groove is V-shaped.

6. The dual-channel check valve according to claim 2, characterized in that, A steel plate is embedded at the bottom of the valve disc.

7. The dual-channel check valve according to claim 1, characterized in that, The valve body is equipped with an inspection door.

8. The dual-channel check valve according to claim 7, characterized in that, Also includes: Unlocking bolts: The valve disc is provided with a protruding block; The jacking bolt engages with the valve body, and when rotated, the jacking bolt pushes the protruding block, causing the valve disc to move away from the fluid outlet.

9. The dual-channel check valve according to claim 1, characterized in that, The valve body is provided with a first flange and a second flange; The first flange is used to connect to the water outlet pipe, and the second flange is used to connect to the base.

10. A sewage lifting device, characterized in that, include: A water collection tank, a sewage pump, and a dual-channel check valve as described in any one of claims 1 to 9; The base is mounted on the water collection tank; The system has two sewage pumps, which are mounted on the base and connected to the two fluid channels respectively.

Images