Novel delay closing flush valve

Abstract

The utility model provides a novel delay closing flush valve which comprises a shell, a valve element, a driving cavity, a driving shaft, a spring, a spiral ring, a guide vane, a rotating wheel, a shaft and an inlet horn pipe, one end of the driving shaft is fixedly installed with the valve element, and a spiral groove is machined in the other end of the driving shaft; a rotating wheel is mounted at one end of the shaft, a spiral ring is mounted at the other end of the shaft, and a boss is machined on the inner side of the spiral ring and matched with the spiral groove; when the rotating wheel rotates, the spiral ring is driven to rotate, the driving shaft is driven to move axially through relative sliding of the boss and the spiral groove, closing of the valve element fixedly installed on the driving shaft is achieved, and when the submersible sewage pump does not work, the valve element is driven to reset through the spring, and automatic opening of the flushing valve is achieved. The closing time of the valve element is controlled by controlling the designed rotating speed of the rotating wheel, the screw pitch of the spiral groove and the damping adjusting assembly, the design difficulty of the flush valve is lowered, and the closing time of the flush valve is better adjusted according to the actual field requirement.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment, specifically to a novel delayed-shutdown flushing valve. Background Technology

[0002] Submersible sewage pumps are typically installed in sewage and rainwater pipeline systems to raise the elevation of sewage and rainwater. When a submersible sewage pump is not in operation for a long time, sediment will accumulate at the pump inlet. Therefore, the inlet of the submersible sewage pump needs to be flushed during the initial operation of the pump. Currently, external water guns are generally used for flushing, which is relatively inconvenient. On the other hand, some flushing valves have been introduced to the market, but they all use a similar principle: the low pressure generated by the high-speed flowing medium causes the oil chamber to expand, thereby lifting a gravity ball. When the gravity ball reaches a certain position, it contacts the valve seat, achieving a delayed closure of the valve. When the submersible sewage pump stops working, the gravity ball returns to its original position, realizing the automatic opening of the flushing valve. The advantage of these flushing valves is that the valve can be opened and closed without electric or pneumatic adjustment. The disadvantage is also obvious: the valve structure in existing flushing valves where the gravity ball and valve seat cooperate can develop scratches on the surface of the gravity ball after long-term use, thus affecting the sealing performance of the flushing valve after closure. On the other hand, by expanding the oil chamber through low pressure, the closing time of the flushing valve becomes unpredictable, which increases the design difficulty of the flushing valve. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a novel delayed-closing flushing valve. A rotating wheel drives a shaft and a spiral ring mounted on the shaft to rotate. The interaction between the spiral ring and its groove enables axial movement of the drive shaft, thereby closing the valve core fixed to the drive shaft. When the submersible pump stops operating, a spring resets the valve core, automatically opening the flushing valve. Furthermore, this invention allows for control of the delayed-closing time. To achieve the above objectives, this invention provides the following technical solution:

[0004] A novel delayed-closing flushing valve includes a housing, a valve core, a drive chamber, a spiral ring, a guide vane, a rotor, a shaft, and a drive shaft.

[0005] A drive shaft is provided on the central axis inside the housing. One end of the drive shaft is fixedly installed with the valve core, and the other end is machined with a spiral groove. A rotating wheel is installed on one end of the shaft, and a spiral ring is installed on the other end. A boss is machined on the inner side of the spiral ring, and the end of the spiral ring away from the drive shaft is also connected to the shaft. The drive chamber is connected to the drive shaft, and the guide vane is connected to the shaft.

[0006] Preferably, the guide vane further includes a guide vane housing, guide vane blades, and a bearing housing; the shaft is fixed and supported by bearing I and bearing II, which are installed in the cavity of the bearing housing; a water guide cone is installed at the water inlet end of the impeller, and an impeller seal is installed between the impeller and the bearing housing.

[0007] More preferably, the water inlet end of the guide vane housing is fixedly installed with the inlet horn tube, and the water outlet end of the guide vane housing is fixedly installed with the housing; the inner side of the inlet horn tube may also be machined with a front guide vane blade; and the water outlet end of the guide vane bearing seat is fixedly installed with the drive chamber.

[0008] More preferably, a slide rail is machined in the middle cavity of the drive chamber; a spring seat is fixedly installed on the drive shaft, a slide groove is machined on the outer side of the spring seat, and a spring is installed between the spring seat and the bottom of the middle cavity of the drive chamber.

[0009] Preferably, a valve seat is machined on the housing near the water outlet.

[0010] Preferably, a sealing seat, a drive chamber seal, and a sealing end cap are installed at the central hole position at the end of the drive chamber away from the bearing seat.

[0011] Preferably, a damping adjustment assembly is also installed inside the guide vane. The damping adjustment assembly consists of a damping pad, a damping adjustment rod, and a damping adjustment disc. The damping adjustment rod is installed in the through hole of the guide vane and passes through the guide vane housing, the guide vane blade, and the bearing seat in sequence, connecting the outer side of the guide vane housing and the inner side of the bearing seat.

[0012] More preferably, a damping pad is installed at one end of the damping adjustment rod on the inner side of the bearing housing, close to the shaft; a damping adjustment disc is installed at one end of the damping adjustment rod on the outer side of the guide vane housing; and threads are machined on the damping adjustment rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The novel delayed-closing flushing valve of this utility model can realize the automatic opening and closing of the valve core without external electric motor or start-up.

[0015] 2. The novel delayed-closing flushing valve of this utility model can control the closing time of the valve core by the design rotation speed of the rotary wheel and the pitch of the spiral groove, which reduces the design difficulty of the flushing valve and allows the closing time of the flushing valve to be designed better according to the actual requirements of the site. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the novel delayed-closing flushing valve described in this utility model.

[0017] Figure 2 This is a structural diagram of the valve core and drive chamber of the novel delayed-closing flushing valve described in this utility model.

[0018] Figure 3 This is a schematic diagram of the damping adjustment component of the novel delayed-closing flushing valve described in this utility model.

[0019] Figure 4 This is a schematic diagram of the closing of the novel delayed-closing flush valve described in this utility model.

[0020] In the picture:

[0021] 1-Housing; 2-Valve core; 3-Drive chamber; 4-Spring seat; 5-Spring; 6-Spiral ring; 7-Bearing I; 8-Guide vane; 9-Bearing II; 10-Rotator seal; 11-Rotator; 12-Inlet bell tube; 13-Water guide cone; 14-Shaft; 15-Drive shaft; 16-Drive chamber seal; 17-Sealing seat; 18-Sealing end cover; 19-Damping adjustment assembly; 1a-Valve seat; 12-Slide rail; 13-Slide groove; 14-Boss; 15-Guide vane housing; 16-Guide vane blade; 17-Bearing seat; 18-Sealing end cover; 19-Damping adjustment assembly; 19a-Valve seat; 10-Spiral groove; 19a-Damping pad; 19b-Damping adjustment rod; 19c-Damping adjustment disc. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-3 The diagram shown is a structural diagram of a novel delayed-closing flushing valve. Below is a technical solution provided by this utility model:

[0024] A novel delayed-closing flushing valve includes a housing 1, a valve core 2, a drive chamber 3, a spiral ring 6, a guide vane 8, a rotating wheel 11, a shaft 14, and a drive shaft 15;

[0025] The housing 1 has a drive shaft 15 located on its central axis. One end of the drive shaft 15 is fixedly installed with the valve core 2, and the other end is machined with a spiral groove 15a. One end of the shaft 14 is equipped with a rotating wheel 11, and the other end is equipped with a spiral ring 6. The inner side of the spiral ring 6 is machined with a boss 6a, and the end of the spiral ring 6 away from the drive shaft 15 is also connected to the shaft 14. The drive chamber 3 is connected to the drive shaft 15, and the guide vane 8 is connected to the shaft 14.

[0026] The boss 6a and the spiral groove 15a cooperate with each other; when the rotating wheel 11 rotates, it will drive the spiral ring 6 to rotate, and then through the relative sliding of the boss 6a and the spiral groove 15a, it will drive the drive shaft 15 to move axially.

[0027] Preferably, the guide vane 8 further includes a guide vane housing 8a, a guide vane blade 8b, and a bearing seat 8c; the shaft 14 is fixed and supported by bearings I7 and II9, which are installed in the cavity of the bearing seat 8c; a water guide cone 13 is installed at the water inlet end of the impeller 11, and an impeller seal 10 is installed between the impeller 11 and the bearing seat 8c.

[0028] More preferably, the water inlet end of the guide vane housing 8a is fixedly installed with the inlet horn tube 12, and the water outlet end of the guide vane housing 8a is fixedly installed with the housing 1; the inner side of the inlet horn tube 12 may also be machined with a front guide vane blade 12a; the water outlet end of the guide vane bearing seat 8c is fixedly installed with the drive chamber 3.

[0029] More preferably, a slide rail is machined in the middle cavity of the drive chamber 3; a spring seat 4 is fixedly installed on the drive shaft 15, a slide groove 4a is machined on the outer side of the spring seat 4, and a spring 5 is installed between the spring seat 4 and the bottom of the middle cavity of the drive chamber 3.

[0030] The slide groove 4a, in conjunction with the slide rail, can restrict the tangential movement of the drive shaft 15. When the pressure of the medium inside the flushing valve decreases, the spring 5 will drive the spring seat 4 and the drive shaft 15 to return to their original positions, thereby opening the valve core 2.

[0031] Preferably, a valve seat 1a is machined on the housing 1 near the water outlet.

[0032] When the valve core 2 contacts the valve seat 1a under the drive of the drive shaft 15, the flushing valve reaches the closed state. The design rotational speed of the rotor 11 and the pitch of the spiral groove 15a will jointly affect the closing time of the valve core 2.

[0033] Preferably, a sealing seat 17, a driving chamber seal 16, and a sealing end cap 18 are installed at the central hole position of the end of the driving chamber 3 away from the bearing seat 8c.

[0034] The drive chamber seal 16 is connected to the drive chamber 3. The drive chamber seal 16 is also connected to the sealing seat 17 and the sealing end cover 18. The sealing end cover 18 is located at one end near the valve core 2. The sealing end cover 18 is used to prevent the medium from entering the interior of the drive chamber 3.

[0035] The spiral groove 15a can also be machined on the inner side of the spiral ring 6. In this case, the boss 6a needs to be machined on one end of the shaft 14.

[0036] Preferred, such as Figure 3 As shown, a damping adjustment assembly 19 is also installed inside the guide vane 8. The damping adjustment assembly 19 consists of a damping pad 19a, a damping adjustment rod 19b, and a damping adjustment disc 19c. The damping adjustment rod 19b is installed in the through hole of the guide vane 8, passes through the guide vane housing 8a, the guide vane blade 8b, and the bearing seat 8c in sequence, and connects the outer side of the guide vane housing 8a and the inner side of the bearing seat 8c.

[0037] More preferably, a damping pad 19a is installed at one end of the damping adjustment rod 19b on the inner side of the bearing housing 8c, close to the shaft 14; a damping adjustment disc 19c is installed at one end of the damping adjustment rod 19b on the outer side of the guide vane housing 8a; and threads are machined on the damping adjustment rod 19b.

[0038] The thread on the damping adjustment rod 19b engages with the thread machined in the through hole. When the damping adjustment rod 19b is rotated, the damping adjustment rod 19b will move along the axial direction of the damping adjustment rod 19b.

[0039] The installation method of the novel delayed-closing flushing valve in this embodiment is as follows:

[0040] First, the damping adjustment rod 19b is installed in the through hole on the guide vane 8. The through hole passes sequentially through the guide vane housing 8a, the guide vane blade 8b, and the bearing seat 8c. A damping pad 19a is installed on the inner end of the damping adjustment rod 19b on the bearing seat 8c, close to the shaft 14. A damping adjustment disc 19a is installed on the outer end of the damping adjustment rod 19b on the guide vane housing 8a. Next, bearings I7 and II9 are installed on the shaft 14 and fixed within the cavity of the bearing seat 8c. At this point, a rotating seal 10 and a rotating wheel 11 are sequentially installed at the water inlet end of the shaft 14, and a guide cone 13 is installed at the water inlet end of the rotating wheel 11. A spiral ring 6 is installed at the other end of the shaft 14.

[0041] After passing the drive shaft 15 through the sealing seat 17 and inserting it into the drive chamber seal 16, it is secured by the sealing end cover 18. Next, the spring seat 4 is installed on the drive shaft 15, and the spring 5 is fixed to the side of the spring seat 4 near the water inlet. The spring 5 is inserted into the central cavity of the drive chamber 3, aligning the slide rail machined inside the drive chamber 3 with the slide groove 4a machined on the outside of the spring seat 4. The other side of the spring is then fixed to the bottom of the drive chamber 3.

[0042] By rotating the rotating wheel 11, align the boss 6a on the spiral ring 6 with the spiral groove 15a and screw it in until the drive chamber 3 mates with the bearing seat 8c, thus fixing the drive chamber 3 and bearing seat 8c in place. Install the valve core 2 at the outlet end of the drive shaft 15. Then, fix the guide vane housing 8a to the inlet bell pipe 12 at the inlet end and fix the guide vane housing 8a to the housing 1 at the outlet end, completing the installation of the entire device.

[0043] The working principle of this novel delayed-closing flushing valve in this embodiment is as follows:

[0044] When the submersible pump is turned on, the impeller 11 begins to rotate under the impact of the fluid medium, driving the shaft 14 and the spiral ring 6 mounted on the shaft 14 to rotate. Since the slide groove 4a and the slide rail restrict the tangential movement of the drive shaft, when the spiral ring 6 rotates, it drives the spiral groove 15a to move axially. After the flushing valve has been running for a period of time, a delayed closure of the flushing valve can be achieved. When the valve is closed, the impeller no longer rotates. At this time, under the action of the pressure difference on both sides of the valve core, the flushing valve remains closed, such as... Figure 4 As shown.

[0045] When the submersible pump stops working, the pressure difference on both sides of the valve core gradually decreases, and the drive shaft 15 is reset under the action of the spring 5, thus opening the valve.

[0046] This invention allows for control of the valve core's closing time via the designed rotational speed of the rotor 11 and the pitch of the spiral groove 15a, reducing the design complexity of the flushing valve. Furthermore, the valve core's closing time can be controlled by adjusting the damping adjustment component 19, allowing for better adjustment of the flushing valve's closing time according to actual site requirements.

[0047] 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 preferred examples and are not intended to limit the 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 novel delayed-shutdown flushing valve, characterized in that: It includes a housing (1), a valve core (2), a drive chamber (3), a spiral ring (6), a guide vane (8), a rotor (11), a shaft (14), and a drive shaft (15); The housing (1) has a drive shaft (15) installed on its central axis. One end of the drive shaft (15) is fixedly installed with the valve core (2), and the other end is machined with a spiral groove (15a). One end of the shaft (14) is equipped with a rotating wheel (11), and the other end is equipped with a spiral ring (6). The inner side of the spiral ring (6) is machined with a boss (6a), and the end of the spiral ring (6) away from the drive shaft (15) is also connected to the shaft (14). The drive chamber (3) is connected to the drive shaft (15), and the guide vane (8) is connected to the shaft (14).

2. The novel delayed-closing flushing valve according to claim 1, characterized in that: The guide vane (8) also includes a guide vane housing (8a), a guide vane blade (8b), and a bearing housing (8c); the shaft (14) is fixed and supported by bearing I (7) and bearing II (9), which are installed in the cavity of the bearing housing (8c); a water guide cone (13) is installed at the water inlet end of the impeller (11), and an impeller seal (10) is installed between the impeller (11) and the bearing housing (8c).

3. A novel delayed-closing flushing valve according to claim 2, characterized in that: The inlet end of the guide vane housing (8a) is fixedly installed with the inlet horn tube (12), and the outlet end of the guide vane housing (8a) is fixedly installed with the housing (1); the inner side of the inlet horn tube (12) may also be machined with a front guide vane blade (12a); the outlet end of the guide vane bearing seat (8c) is fixedly installed with the drive chamber (3); a slide rail is machined in the middle cavity of the drive chamber (3); a spring seat (4) is fixedly installed on the drive shaft (15), a slide groove (4a) is machined on the outer side of the spring seat (4), and a spring (5) is installed between the spring seat (4) and the bottom of the middle cavity of the drive chamber (3).

4. A novel delayed-closing flushing valve according to claim 1, characterized in that: A valve seat (1a) is machined on the housing (1) near the water outlet.

5. A novel delayed-closing flushing valve according to claim 1, characterized in that: A sealing seat (17), a driving chamber seal (16), and a sealing end cap (18) are installed at the central hole of the end of the driving chamber (3) away from the bearing seat (8c).

6. A novel delayed-closing flushing valve according to claim 1, characterized in that: The guide vane (8) is also equipped with a damping adjustment assembly (19), which consists of a damping pad (19a), a damping adjustment rod (19b) and a damping adjustment disc (19c). The damping adjustment rod (19b) is installed in the through hole of the guide vane (8), and passes through the guide vane housing (8a), the guide vane blade (8b) and the bearing seat (8c) in sequence, connecting the outer side of the guide vane housing (8a) and the inner side of the bearing seat (8c).

7. A novel delayed-closing flushing valve according to claim 6, characterized in that: The damping adjustment rod (19b) has a damping pad (19a) installed at one end inside the bearing housing (8c), close to the shaft (14); the damping adjustment rod (19b) has a damping adjustment disc (19c) installed at one end outside the guide vane housing (8a); the damping adjustment rod (19b) has threads machined on it.

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