Improved full-automatic backwashing valve
Through the fully automatic backwash valve, it uses the return flow during pump start to form a rush flow dispersed solid material, which solves the problem of shutdown and cleaning of traditional sewage pump stations, realizes automatic cleaning, reduces operating costs and ensures stable operation of the pump.
Patent Information
- Application Number
- CN202421800876.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-29
AI Technical Summary
Traditional sewage pump stations require regular shutdowns to clean or maintain, resulting in increased operating costs, and grease solids in the water collection pit cause unpleasant odors and serious pump blockage problems.
An improved fully automatic backwash valve is designed to return part of the fluid to the collecting pit when the pump is started, forming a rush-dispersed solid matter, and the valve opening and closing is automatically controlled through the Venturi effect and pressure difference to avoid shutdown and cleaning.
It realizes automatic cleaning without shutdown, reduces operating costs, prevents settlement and formation of scum layers, and ensures stable operation of the pump.
Smart Images
Figure CN223076248U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-pressure cleaning of sewage pump pits, and specifically relates to an improved fully automatic backwashing valve. Background Art
[0002] Currently, the sewage in the sump is composed of sediment or scum layers, and the pumping station must be cleaned regularly. The reasons for these problems may be: the capacity of the sump in the pumping station is relatively large, resulting in insufficient inflow, so that there are a large amount of grease solids in the wastewater in the pool, thus forming a bad smell and causing the operating performance of the level switch to decline or the pump to be blocked. This requires shutdown for necessary cleaning or maintenance, thus greatly increasing the operating cost. Content of the Utility Model
[0003] The purpose of the utility model is to solve the above deficiencies and provide an improved fully automatic backwashing valve, which can avoid the problem that the traditional structure requires shutdown for necessary cleaning or maintenance, thus greatly increasing the operating cost.
[0004] To achieve the above purpose, an improved fully automatic backwashing valve is designed, which includes a valve body 1. A valve body cavity 1b is provided inside the valve body 1. On the upper part of the left and right sides of the valve body 1, a water outlet 1a and a water inlet are respectively provided. An elbow 11 is installed at the water outlet 1a of the valve body 1. A water inlet joint 2 is installed at the water inlet of the valve body 1. A upper valve cover 5 is installed at the bottom end of the valve body 1. A lower valve cover 7 is installed at the bottom end of the upper valve cover 5. An oil cavity 13 is formed between the upper valve cover 5 and the lower valve cover 7. An upper rubber diaphragm 14 is installed at the bottom of the valve body cavity 1b. A floating ball 15 is placed on the upper rubber diaphragm 14. A lower rubber diaphragm 12 is installed at the bottom of the oil cavity 13. An adjusting screw 10 is installed on the upper valve cover 5. A flow channel is provided inside the upper valve cover 5 and the adjusting screw 10. The valve body cavity 1b and the oil cavity 13 are communicated through the flow channel. The flow channel is arranged below the upper rubber diaphragm 14.
[0005] Further, the water inlet joint 2 includes an inlet nozzle 2a and a connecting thread 2c. The inlet nozzle 2a is arranged on one side of the water inlet joint 2 and extends into the valve body cavity 1b. The connecting thread 2c is arranged on the outer wall of the other side of the water inlet joint 2. The water inlet joint 2 is connected to the pump outlet through the connecting thread 2c.
[0006] Further, a protrusion is circumferentially arranged on the outer wall of the middle part of the water inlet joint 2. A sealing groove 2b is arranged at the protrusion. A sealing ring I 16 is installed in the sealing groove 2b. The water inlet joint 2 and the valve body 1 are sealed through the sealing ring I 16.
[0007] Further, a first counterbore 5a, a second counterbore 5b and a through hole 5c are provided on the upper valve cover 5. The through hole 5c is communicated with the oil chamber 13, the second counterbore 5b is communicated with the valve body chamber 1b, the first counterbore 5a is connected between the through hole 5c and the second counterbore 5b. A first hole 10a and a third hole 10c are provided on the adjusting screw 10. The third hole 10c is communicated with the through hole 5c, and the first hole 10a is connected between the third hole 10c and the first counterbore 5a. The through hole 5c, the third hole 10c, the first hole 10a, the first counterbore 5a and the second counterbore 5b form a flow channel.
[0008] Further, circumferentially distributed second holes 10b are provided on the adjusting screw 10. The second holes 10b are arranged between the adjusting screw 10 and the upper valve cover 5, and sealing rings II 17 are installed in the second holes 10b.
[0009] Further, third holes 10c with different sizes are provided at different positions on the adjusting screw 10, and the direction of the adjusting screw 10 is rotated to adjust the rising speed of the oil in the oil chamber 13, so as to control the time for the floating ball 15 to run to the water outlet 1a, and further control the working time of the valve.
[0010] Further, the longitudinal sections of the upper rubber diaphragm 14 and the lower rubber diaphragm 12 are both in an inverted Ω shape. The extending parts on the left and right sides of the upper rubber diaphragm 14 are arranged between the valve body 1 and the upper valve cover 5, and the extending parts on the left and right sides of the lower rubber diaphragm 12 are arranged between the upper valve cover 5 and the lower valve cover 7, so that the installation of the upper rubber diaphragm 14 and the lower rubber diaphragm 12 is more stable and reliable.
[0011] Further, a gland 9 is provided at the position of the adjusting screw 10, and the gland 9 is connected and pressed against the adjusting screw 10 by a fourth screw 8.
[0012] Further, the valve body 1 and the water inlet joint 2 are connected and assembled by a first screw 3, the valve body 1 and the upper valve cover 5 are connected and assembled by a second screw 4, and the upper valve cover 5 and the lower valve cover 7 are connected and assembled by a third screw 6.
[0013] Compared with the prior art, the utility model has a novel and simple structure and a reasonable design. As long as the flushing valve is installed at the pump outlet, when the pump is started, the valve is automatically started. A part of the fluid at the pump outlet will be sent back to the sump through the opened cleaning valve and form a surge in the pit. By adjusting the direction of the elbow, the solids in the medium near the pump suction port can be dispersed, making them easier to be discharged by the pump. When the pump runs stably, the valve automatically stops working, avoiding the problem that the traditional structure requires shutdown for necessary cleaning or maintenance, resulting in a significant increase in operating costs, and is worthy of popularization and application. [Description of the Drawings]
[0014] Figure 1It is a schematic structural diagram of the present utility model;
[0015] Figure 2 It is a schematic front sectional structure diagram of the present utility model;
[0016] Figure 3 It is a schematic side sectional structure diagram of the present utility model;
[0017] In the figure: 1. Valve body; 2. Water inlet joint; 3. Screw one; 4. Screw two; 5. Upper valve cover; 6. Screw three; 7. Upper valve cover; 8. Screw four; 9. Gland; 10. Adjusting screw; 11. Elbow; 12. Lower rubber diaphragm; 13. Oil chamber; 14. Upper rubber diaphragm; 15. Floating ball; 16. Seal ring one; 17. Seal ring two; 1a. Water outlet; 1b. Valve body cavity; 2a. Nozzle; 2b. Sealing groove; 2c. Connecting thread; 5a. Counterbore one; 5b. Counterbore two; 5c. Through hole; 10a. Hole one; 10b. Hole two; 10c. Hole three. [Specific implementation manner]
[0018] As shown in the attached Figure 1 to the attached Figure 3 As shown, the present utility model provides an improved fully automatic backwash valve, including a valve body 1. A valve body cavity 1b is provided inside the valve body 1. Water outlets 1a and a water inlet are respectively provided on the left and right sides of the upper part of the valve body 1. An elbow 11 is installed at the water outlet 1a of the valve body 1. A water inlet joint 2 is installed at the water inlet of the valve body 1. An upper valve cover 5 is installed at the bottom end of the valve body 1. A lower valve cover 7 is installed at the bottom end of the upper valve cover 5. An oil chamber 13 is formed between the upper valve cover 5 and the lower valve cover 7. An upper rubber diaphragm 14 is installed at the inner bottom of the valve body cavity 1b. A floating ball 15 is placed on the upper rubber diaphragm 14. A lower rubber diaphragm 12 is installed at the inner bottom of the oil chamber 13. An adjusting screw 10 is installed on the upper valve cover 5. A flow channel is provided inside the upper valve cover 5 and the adjusting screw 10. The valve body cavity 1b and the oil chamber 13 are communicated through the flow channel. The flow channel is arranged below the upper rubber diaphragm 14.
[0019] Among them, the water inlet joint 2 includes an inlet nozzle 2a and a connecting thread 2c. The inlet nozzle 2a is arranged on one side of the water inlet joint 2 and extends into the valve body cavity 1b. The connecting thread 2c is arranged on the outer wall of the other side of the water inlet joint 2. The water inlet joint 2 is connected to the pump outlet through the connecting thread 2c; a protrusion is circumferentially arranged on the outer wall of the middle part of the water inlet joint 2. A sealing groove 2b is arranged at the protrusion. A seal ring one 16 is installed in the sealing groove 2b. The water inlet joint 2 and the valve body 1 are sealed through the seal ring one 16.
[0020] The valve body 1 and the water inlet joint 2 are connected and assembled by the first screw 3. The valve body 1 and the upper valve cover 5 are connected and assembled by the second screw 4. The upper valve cover 5 and the lower valve cover 7 are connected and assembled by the third screw 6. A gland 9 is arranged at the adjusting screw 10. The gland 9 is connected and pressed against the adjusting screw 10 by the fourth screw 8. The longitudinal sections of the upper rubber diaphragm 14 and the lower rubber diaphragm 12 are both in an inverted Ω shape. The extending parts on the left and right sides of the upper rubber diaphragm 14 are arranged between the valve body 1 and the upper valve cover 5. The extending parts on the left and right sides of the lower rubber diaphragm 12 are arranged between the upper valve cover 5 and the lower valve cover 7, so that the upper rubber diaphragm 14 and the lower rubber diaphragm 12 are installed more stably and reliably.
[0021] The upper valve cover 5 is provided with a first counterbore 5a, a second counterbore 5b and a through hole 5c. The through hole 5c is communicated with the oil cavity 13. The second counterbore 5b is communicated with the valve body cavity 1b. The first counterbore 5a is connected between the through hole 5c and the second counterbore 5b. The adjusting screw 10 is provided with a first hole 10a and a third hole 10c. The third hole 10c is communicated with the through hole 5c. The first hole 10a is connected between the third hole 10c and the first counterbore 5a. The through hole 5c, the third hole 10c, the first hole 10a, the first counterbore 5a and the second counterbore 5b form a flow channel. The adjusting screw 10 is further provided with circumferentially distributed second holes 10b. The second holes 10b are arranged between the adjusting screw 10 and the upper valve cover 5. Sealing rings II 17 are installed in the second holes 10b. Further, different orientations of the adjusting screw 10 are provided with third holes 10c of different sizes, and the direction of the adjusting screw 10 is rotated to adjust the rising speed of the oil in the oil cavity 13, so as to control the time for the floating ball 15 to run to the water outlet 1a, and further control the working time of the valve.
[0022] The following further describes the present invention in conjunction with the drawings and specific embodiments:
[0023] The present invention provides a new type of fully automatic backwashing valve. When the pump is started, a part of the pumped fluid will be sent back to the sump through the opened cleaning valve, and a surge will be formed in the pit, and the solids in the medium near the pump suction port will be dispersed, making it easier for them to be pumped out by the pump.
[0024] The spraying direction of the nozzle of the cleaning valve can be directionally controlled, effectively preventing the occurrence of sedimentation at the bottom of the sump or the formation of a floating scum layer upwards, especially for liquids with a relatively high grease content. At the end, the bottom of the pool is pre-rinsed once, and the cleaning valve will automatically close and complete the rinsing process. The dispersed pollutants will be discharged along with the medium. During the pumping process, the rinsing valve will be opened again by the pump and the rinsing process will be automatically completed. The working principle of the rinsing valve is based on the Venturi effect and the pressure difference. Therefore, it does not require additional external control elements and power units.
[0025] Specifically, the fully automatic backwash valve includes a valve body 1, a water inlet joint 2, a first screw 3, a second screw 4, an upper valve cover 5, a third screw 6, a lower valve cover 7, a fourth screw 8, a gland 9, an adjusting screw 10, an elbow 11, a lower rubber diaphragm 12, an oil chamber 13, an upper rubber diaphragm 14, a floating ball 15, a first sealing ring 16 and a second sealing ring 17; a water outlet 1a and a valve body cavity 1b are provided on the valve body; an inlet nozzle 2a, a sealing groove 2b and a connecting thread 2c are provided on the water inlet joint; a first counterbore 5a, a second counterbore 5b and a through hole 5c are provided on the upper valve cover; a first hole 10a, a second hole 10b and a third hole 10c are provided on the adjusting screw.
[0026] As shown in the Figure 1 attachment, the valve body 1 and the water inlet joint 2 are connected and assembled by the first screw 3; the valve body 1 and the upper valve cover 5 are connected and assembled by the second screw 4; the upper valve cover 5 and the lower valve cover 7 are connected and assembled by the third screw 6; the gland 9 is connected and pressed against the adjusting screw 10 by the fourth screw 8.
[0027] As shown in the Figure 2 attachment, a water outlet 1a and a valve body cavity 1b are provided on the valve body 1; an inlet nozzle 2a, a sealing groove 2b and a connecting thread 2c are provided on the water inlet joint 2. The connecting thread 2c is connected to the pump outlet. When the pump starts, the backwash valve starts. The high-speed liquid at the pump outlet flows through the nozzle 2a and flows out from the water outlet 1a, and is diverted through the elbow 11 to wash and disperse the solids in the medium near the pump suction port. The oil chamber 13 is filled with oil. Due to the high-speed liquid flow at the nozzle 2a, a low-pressure area will be formed around here. The oil in the oil chamber 13 flows into the upper cavity through the through hole 5c, the third hole 10c, the first hole 10a, the first counterbore 5a and the second counterbore 5b shown in the Figure 3 attachment, causing the upper rubber diaphragm 14 to float upward, driving the floating ball 15 to move upward. After a period of time, the floating ball 15 will finally be in the position of the Figure 2 dotted line, closing the outlet valve to stop working. After the water pump stops, the oil in the upper cavity flows back into the oil chamber 13, and the floating ball 15 drops. When the water pump starts again next time, the backwash valve will automatically start to wash again, and so on in a cycle.
[0028] As shown in the Figure 3 attachment, different-sized third holes 10c are provided at different positions on the adjusting screw 10. By rotating the direction of the adjusting screw 10, the gland 9 is pressed tightly and sealed by the second sealing ring 17, and the rising speed of the oil in the oil chamber 13 can be controlled, so as to further control the time for the floating ball 15 to run to the water outlet 1a, and thus control the working time of the valve.
[0029] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The circuit connection adopts the conventional connection method in the prior art, and will not be elaborated here.
[0030] The present utility model is not limited by the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.
Claims
1. An improved fully automatic backwashing valve, comprising a valve body (1), wherein a valve body cavity (1b) is provided inside the valve body (1), and it is characterized in that: On the upper part of the valve body (1), a water outlet (1a) and a water inlet are respectively arranged on the left and right sides. A bend (11) is installed at the water outlet (1a) of the valve body (1), and a water inlet joint (2) is installed at the water inlet of the valve body (1). The bottom end of the valve body (1) is installed with an upper valve cover (5), and a lower valve cover (7) is installed at the bottom end of the upper valve cover (5). An oil chamber (13) is formed between the upper valve cover (5) and the lower valve cover (7). An upper rubber diaphragm (14) is installed at the inner bottom of the valve body chamber (1b), and a floating ball (15) is placed on the upper rubber diaphragm (14). A lower rubber diaphragm (12) is installed at the inner bottom of the oil chamber (13). An adjusting screw (10) is installed on the upper valve cover (5). A flow channel is arranged in the upper valve cover (5) and the adjusting screw (10). The valve body chamber (1b) is communicated with the oil chamber (13) through the flow channel, and the flow channel is arranged below the upper rubber diaphragm (14).
2. The improved fully automatic backwashing valve according to claim 1, wherein: The water inlet joint (2) includes an inlet nozzle (2a) and a connecting thread (2c). The inlet nozzle (2a) is arranged on one side of the water inlet joint (2) and extends into the valve body chamber (1b). The connecting thread (2c) is arranged on the outer wall of the other side of the water inlet joint (2). The water inlet joint (2) is connected to the pump outlet through the connecting thread (2c).
3. The improved fully automatic backwash valve according to claim 2, characterized in that: A protrusion is circumferentially arranged on the outer wall of the middle part of the water inlet joint (2). A sealing groove (2b) is arranged at the protrusion, and a first sealing ring (16) is installed in the sealing groove (2b). The water inlet joint (2) and the valve body (1) are sealed through the first sealing ring (16).
4. The improved fully automatic backwashing valve according to claim 1, 2 or 3, characterized in that: The upper valve cover (5) is provided with a first counterbore (5a), a second counterbore (5b) and a through hole (5c). The through hole (5c) is communicated with the oil chamber (13), the second counterbore (5b) is communicated with the valve body chamber (1b), and the first counterbore (5a) is connected between the through hole (5c) and the second counterbore (5b). The adjusting screw (10) is provided with a first hole (10a) and a third hole (10c). The third hole (10c) is communicated with the through hole (5c), and the first hole (10a) is connected between the third hole (10c) and the first counterbore (5a). The through hole (5c), the third hole (10c), the first hole (10a), the first counterbore (5a) and the second counterbore (5b) form a flow channel.
5. The improved fully automatic backwash valve according to claim 4, characterized in that: The adjusting screw (10) is provided with second holes (10b) distributed circumferentially. The second holes (10b) are arranged between the adjusting screw (10) and the upper valve cover (5), and second sealing rings (17) are installed in the second holes (10b).
6. The improved fully automatic backwashing valve according to claim 4, wherein: The adjusting screw (10) is provided with third holes (10c) of different sizes in different orientations, and the direction of the adjusting screw (10) is rotated to adjust the rising speed of the oil in the oil chamber (13).
7. The improved fully automatic backwashing valve according to claim 1, wherein: The longitudinal sections of the upper rubber diaphragm (14) and the lower rubber diaphragm (12) are both in an inverted Ω shape. The extending parts on the left and right sides of the upper rubber diaphragm (14) are arranged between the valve body (1) and the upper valve cover (5), and the extending parts on the left and right sides of the lower rubber diaphragm (12) are arranged between the upper valve cover (5) and the lower valve cover (7).
8. The improved fully automatic backwash valve according to claim 1, characterized in that: A gland (9) is provided at the adjusting screw (10), and the gland (9) is connected and pressed against the adjusting screw (10) by screw four (8).
9. The improved fully automatic backwash valve according to claim 1, wherein: The valve body (1) and the water inlet joint (2) are connected and assembled by screw one (3), the valve body (1) and the upper valve cover (5) are connected and assembled by screw two (4), and the upper valve cover (5) and the lower valve cover (7) are connected and assembled by screw three (6).