Multi-port non-return blow-down valve

Abstract

The utility model provides a multi-port non-return blow-down valve, and belongs to the technical field of valve manufacturing. The problem that an existing blow-down valve is high in use cost is solved. The multi-port check type blow-down valve comprises a valve body, a branch pipe is installed at the bottom of the valve body, check valve elements are installed in inner cavities of the valve body and the branch pipe, a ball valve element is installed in the inner cavity of the valve body, an overhaul pipe is installed at the top of the valve body, an overhaul cover is installed on the overhaul pipe, and a flow slowing assembly is installed at the bottom of the overhaul cover and comprises an electric push rod. The telescopic end of the electric push rod is connected with an upper sealing plate, the bottom of the upper sealing plate is connected with a waterproof shell, the center of the top of the upper sealing plate is connected with a small motor, and an output shaft of the small motor penetrates into an inner cavity of the waterproof shell and is connected with a first bevel gear. One end of the propeller penetrates into the waterproof shell and is connected with a second bevel gear, and the bottom of the waterproof shell is connected with a lower sealing plate. The utility model has the advantages of long service life and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve manufacturing technical field relates to a blowdown valve especially, relates to a kind of multi-port check type blowdown valve. BACKGROUND

[0002] The blowdown valve is a kind of valve for discharging sewage, waste water, impurities and other substances in the system of discharge pipeline, container, etc., and is widely used in water supply and drainage, building fire protection, boiler, chemical industry and other fields.

[0003] For example, a kind of blowdown valve is disclosed in Chinese patent literature [application number: 201920934902.0;authorized announcement number: CN210484660U], it includes valve body mechanism, valve body mechanism includes the lower valve body, rotating shaft, dynamic porcelain sheet, fixed porcelain sheet and upper valve body connected in sequence, rotating shaft inserts and connects rotating buckle, rotating buckle outer buckle connects inner rotating sleeve, inner rotating sleeve outer buckle connects outer rotating sleeve;Rotating buckle is positioned in the lower valve body groove and moves.

[0004] The above-mentioned blowdown valve increases the sealing and fastening of porcelain sheet, prolongs the service life of blowdown valve, but its valve body is single-port structure, when discharging sewage, usually need to connect multiple valve bodies to discharge sewage, the overall cost is higher, at the same time, multiple sewage discharges to the inside of blowdown valve, can cause the water flow speed inside valve body to be too fast, and then lead to higher pressure, prone to cause damage to valve body, reduces the service life of valve body. SUMMARY

[0005] The utility model aims at the above-mentioned problem existing in prior art, provides a kind of multi-port check type blowdown valve of slow flow pressure reduction.

[0006] The utility model discloses the purpose can be realized by the following technical scheme: a kind of multi-port check type blowdown valve, including valve body, the left side of the bottom of valve body is connected and is installed with branch pipe, the left side and the inner cavity of branch pipe of valve body inner cavity are all fixedly installed with check valve core, the right side of valve body inner cavity is fixedly installed with ball valve core, the top of valve body is connected and is installed with overhaul pipe, the surface of overhaul pipe is installed with overhaul cover, the bottom of overhaul cover is fixedly installed with slow flow component, slow flow component includes electric push rod, electric push rod is fixedly installed in the bottom of overhaul cover, the telescopic end of electric push rod is fixedly connected with upper sealing plate, the bottom of upper sealing plate is fixedly connected with waterproof shell, the top of upper sealing plate center is fixedly connected with small motor, the output shaft of small motor is penetrated to the inner cavity of waterproof shell and is fixedly connected with bevel gear one, the left side of waterproof shell is rotatably installed with propeller, one end of propeller is penetrated to the inside of waterproof shell and is fixedly connected with bevel gear two, the bottom of waterproof shell is fixedly connected with lower sealing plate.

[0007] This multi-port check valve uses a propeller structure to buffer the water flow collected inside the valve body, reducing the water flow speed and alleviating the water pressure inside the valve body. This ensures that the valve body will not be damaged and extends its service life.

[0008] In the aforementioned multi-port check valve, the upper and lower sealing plates are of the same size and both match the inner diameter of the inspection pipe. A one-way drain valve is installed on the left side of the bottom of the lower sealing plate. The arrangement of the upper and lower sealing plates ensures that water flow will not enter the inspection pipe, thereby effectively protecting the components inside the inspection pipe.

[0009] In the aforementioned multi-port check valve, the flow direction of the one-way drain valve is from top to bottom, and a groove is provided at the bottom of the valve body cavity to accommodate the one-way drain valve. The groove provides installation space for the one-way drain valve, ensuring that the lower sealing plate is not obstructed during descent.

[0010] In the aforementioned multi-port check valve, the left side of the waterproof housing has an inclined surface. The connection between the output shaft of the small motor and the waterproof housing, and the connection between the propeller and the waterproof housing, are both rotatably connected via sealed bearings. The sealed bearings ensure that water does not enter the interior of the waterproof housing, thus preventing corrosion of the bevel gears.

[0011] In the aforementioned multi-port check valve, bevel gear one and bevel gear two are meshed, and both ends of the waterproof housing are fixedly connected to the upper and lower sealing plates respectively via connecting rods. The connecting rods ensure the stable fixation of the waterproof housing without affecting the normal discharge of water.

[0012] In the aforementioned multi-port check valve, the flow direction of the check valve core is from the external check valve core to the inside of the valve body, and the propeller is located on the right side of the check valve core.

[0013] Compared with existing technologies, the advantages of this multi-port check valve are: by adding a branch pipe to the valve body and installing check valve cores inside both the valve body and the branch pipe, sewage can be discharged from two ports. At the same time, the check valve core's check-back characteristic prevents sewage from flowing back. When both ports are working simultaneously, the water flow converges inside the valve body, increasing the internal pressure. A small motor drives a propeller through bevel gear meshing, reducing the water flow velocity inside the valve body and achieving a slowing effect. This reduces the internal pressure of the valve body and extends its service life. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of a multi-port check valve.

[0015] Figure 2This is a schematic diagram of the cross-sectional structure of a multi-port check valve.

[0016] Figure 3 This is a schematic diagram of the structure of the slow-flow component of the multi-port check valve.

[0017] In the diagram: 1. Valve body; 2. Check valve core; 3. Branch pipe; 4. Flow control assembly; 41. Electric actuator; 42. Small motor; 43. Upper sealing plate; 44. Propeller; 45. Waterproof shell; 46. Bevel gear II; 47. Lower sealing plate; 48. Bevel gear I; 49. One-way drain valve; 5. Inspection cover; 6. Inspection pipe; 7. Ball valve core. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, this multi-port check valve includes a valve body 1. A branch pipe 3 is installed on the left side of the bottom of the valve body 1. Check valve cores 2 are fixedly installed on the left side of the inner cavity of the valve body 1 and the inner cavity of the branch pipe 3. A ball valve core 7 is fixedly installed on the right side of the inner cavity of the valve body 1. A maintenance pipe 6 is installed on the top of the valve body 1. A maintenance cover 5 is fitted on the surface of the maintenance pipe 6. A flow-slowing component 4 is fixedly installed at the bottom of the maintenance cover 5. The flow-slowing component 4 includes an electric push rod 41, which is fixedly installed at the bottom of the maintenance cover 5. The telescopic end of the moving push rod 41 is fixedly connected to an upper sealing plate 43. The bottom of the upper sealing plate 43 is fixedly connected to a waterproof shell 45. A small motor 42 is fixedly connected to the center of the top of the upper sealing plate 43. The output shaft of the small motor 42 passes through the inner cavity of the waterproof shell 45 and is fixedly connected to a bevel gear 48. A propeller 44 is rotatably installed on the left side of the waterproof shell 45. One end of the propeller 44 passes through the inside of the waterproof shell 45 and is fixedly connected to a bevel gear 46. The bottom of the waterproof shell 45 is fixedly connected to a lower sealing plate 47.

[0020] To elaborate further, the upper sealing plate 43 and the lower sealing plate 47 are the same size and both match the inner diameter of the inspection pipe 6. A one-way drain valve 49 is installed on the left side of the bottom of the lower sealing plate 47. The flow direction of the one-way drain valve 49 is from top to bottom, and a groove is provided at the bottom of the inner cavity of the valve body 1 to accommodate the one-way drain valve 49.

[0021] The waterproof housing 45 has an inclined surface on its left side. The connection between the output shaft of the small motor 42 and the waterproof housing 45, and the connection between the propeller 44 and the waterproof housing 45, are all rotatably connected via sealed bearings. Bevel gear 1 48 and bevel gear 2 46 are meshed. The upper and lower ends of the waterproof housing 45 are fixedly connected to the upper sealing plate 43 and the lower sealing plate 47 respectively via connecting rods. The flow direction of the check valve core 2 is from the external check valve core 2 to the interior of the valve body 1. The propeller 44 is located on the right side of the check valve core 2.

[0022] In practical applications, the left side of valve body 1 and the lower end of branch pipe 3 are connected to the sewage pipe. When sewage flows into valve body 1 from both ends, the electric push rod 41 and the small motor 42 are activated. The electric push rod 41 pushes the upper sealing plate 43 down until it is flush with the lower opening of the inspection pipe 6 of valve body 1. Figure 1 As shown, the output shaft of the small motor 42 drives the first bevel gear 48 to rotate, and through its meshing with the second bevel gear 46, it drives the propeller 44 to rotate, causing the propeller 44 to agitate the collected water flow, thereby reducing the sewage flow rate and causing it to slowly discharge from the ball valve core 7. When sewage is discharged into only one port, the electric push rod 41 is activated to reset, causing it to drive the propeller 44 to rise until the lower sealing plate 47 is flush with the lower opening of the inspection pipe 6 of the valve body 1. After the sewage is discharged, the sewage above the lower sealing plate 47 is discharged into the valve body 1 through the one-way drain valve 49.

[0023] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A multi-port check valve, comprising a valve body (1), characterized in that: A branch pipe (3) is connected to the left side of the bottom of the valve body (1). Check valve cores (2) are fixedly installed on the left side of the inner cavity of the valve body (1) and the inner cavity of the branch pipe (3). A ball valve core (7) is fixedly installed on the right side of the inner cavity of the valve body (1). A maintenance pipe (6) is connected to the top of the valve body (1). A maintenance cover (5) is fitted on the surface of the maintenance pipe (6). A flow-slowing assembly (4) is fixedly installed at the bottom of the maintenance cover (5). The flow-slowing assembly (4) includes an electric push rod (41). The electric push rod (41) is fixedly installed at the bottom of the maintenance cover (5). The telescopic end of the waterproof housing (45) is fixedly connected to an upper sealing plate (43). The bottom of the upper sealing plate (43) is fixedly connected to a waterproof shell (45). A small motor (42) is fixedly connected to the center of the top of the upper sealing plate (43). The output shaft of the small motor (42) passes through the inner cavity of the waterproof shell (45) and is fixedly connected to a bevel gear (48). A propeller (44) is rotatably installed on the left side of the waterproof shell (45). One end of the propeller (44) passes through the inside of the waterproof shell (45) and is fixedly connected to a bevel gear (46). The bottom of the waterproof shell (45) is fixedly connected to a lower sealing plate (47).

2. The multi-port check valve according to claim 1, characterized in that: The upper sealing plate (43) and the lower sealing plate (47) are the same size and are matched with the inner diameter of the inspection pipe (6). A one-way drain valve (49) is connected to the left side of the bottom of the lower sealing plate (47).

3. The multi-port check valve according to claim 2, characterized in that: The flow direction of the one-way drain valve (49) is from top to bottom, and the bottom of the inner cavity of the valve body (1) is provided with a groove for the one-way drain valve (49) to be accommodated.

4. The multi-port check valve according to claim 1, characterized in that: The waterproof shell (45) has an inclined surface on its left side. The connection between the output shaft of the small motor (42) and the waterproof shell (45), and the connection between the propeller (44) and the waterproof shell (45) are all rotatably connected by sealed bearings.

5. The multi-port check valve according to claim 1, characterized in that: The first bevel gear (48) and the second bevel gear (46) are meshed. The upper and lower ends of the waterproof shell (45) are fixedly connected to the upper sealing plate (43) and the lower sealing plate (47) respectively by connecting rods.

6. The multi-port check valve according to claim 1, characterized in that: The flow direction of the check valve core (2) is from the external check valve core (2) to the inside of the valve body (1), and the propeller (44) is located on the right side of the check valve core (2).

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