Water stop valve for underground drainage engineering of construction engineering

Abstract

The utility model discloses a water stop valve used for construction engineering underground drainage engineering, and particularly relates to the technical field of water stop valves, the water stop valve comprises a valve body and two connecting pipes, the inner cavity of the valve body is divided into a water stop cavity and an air cavity, and the side surfaces, far away from each other, of the outer surfaces of the two connecting pipes are respectively provided with a fixing assembly. A sealing assembly communicated with the air cavity is arranged at the top end of the valve body, and a valve clack is installed in an inner cavity of the water stop cavity. According to the water stop valve used for the underground drainage engineering of the construction engineering, the connecting pipes at the two ends of the valve body are connected with drainage pipes with different calibers in a clamped mode through the fixing assemblies, and then gaps between the drainage pipes and the two connecting pipes are sealed through the sealing assemblies; in this way, when drain pipes with different calibers can be clamped and installed through the device, potential fault hazards such as water leakage and loosening can be avoided, and the adaptability of the device to building of complex drain pipelines is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water stop valve, especially to a water stop valve for construction engineering underground drainage engineering. BACKGROUND

[0002] Water stop valve is also called check valve and one-way valve, which is a device for controlling one-way flow of fluid and preventing backflow, and is widely used in fields of water supply and drainage, heating and ventilation, fire protection and industrial pipeline. The working principle of water stop valve is to use the force generated by the flow of medium to automatically open and close the valve, so that the valve disc is pushed open by the forward water flow, and the valve disc is reset to cut off the water flow when the water flow is reversed. Common types include swing type, in which the valve disc rotates around the pin shaft to open and close, the flow resistance is small, and it is suitable for large-diameter pipelines, but the sealing performance is slightly weak. There is also a lifting type, in which the valve disc vertically lifts along the center line, and the valve disc is lifted upward in the forward direction and falls downward in the reverse direction to seal the passage, and the sealing performance is better.

[0003] The Chinese patent with the authorization announcement number CN218543289U discloses a water stop valve for construction engineering underground drainage engineering, which relates to the technical field of underground drainage engineering and comprises a valve body, an annular hole block fixedly connected inside the valve body, fixed blocks fixedly connected to the front and rear sides above the upper surface of the annular hole block, a fixed rod fixedly connected to the opposite side surfaces of the two fixed blocks, connecting plates rotatably connected to the front and rear sides of the rod wall of the fixed rod, a circular valve disc fixedly connected to the lower surfaces of the two connecting plates, a rotary spring sleeved on the rod wall of the fixed rod, connecting discs fixedly connected to the left and right sides of the valve body, and sealing grooves formed in the opposite side surfaces of the two connecting discs. The device can prevent the bolts at the connection position of the water stop valve and the underground drainage pipe from loosening under the impact of discharging sewage, avoid the leakage at the connection position of the water stop valve and the underground drainage pipe, prevent the sewage from polluting the soil, prevent the surface of the water stop valve from being corroded by the sewage, and improve the service life of the water stop valve.

[0004] When the water stop valve is connected with the underground drainage pipe, the size of the water stop valve needs to be selected according to the size of the drainage pipe. The device cannot be adapted to drainage pipes with different wall diameters in actual use, so the device has high limitations in actual use. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a water stop valve for construction engineering underground drainage engineering, which can effectively solve the problems mentioned above.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] The utility model provides a stop valve for construction engineering underground drainage engineering, including valve body and two connecting pipes, the valve body inner chamber is divided into two parts of water stop chamber and air chamber, two connecting pipes are symmetrically installed two ends of valve body height direction, two connecting pipes all are linked with water stop chamber, two connecting pipes outer surfaces are away from each other's side respectively is provided with fixed component, the valve body top is provided with sealing assembly linked with air chamber, the water stop chamber inner chamber is installed with valve clack.

[0008] Preferably, the sealing assembly includes a gas cylinder and two air bags, the two air bags are respectively glued and installed on the inner surface of the two connecting pipes, the outer surface of the two air bags is respectively connected with two air tubes, and the one end of the two air tubes away from the two air bags is connected into the inner cavity of the air chamber.

[0009] Preferably, the gas cylinder is installed through the top end of the valve body, the inner cavity bottom end of the gas cylinder is provided with an air outlet hole communicated with the air chamber, and the outer surface lower side of the gas cylinder is provided with a one-way air valve communicated with the inner cavity thereof.

[0010] Preferably, the inner cavity upper end of the gas cylinder is fixedly provided with a stop ring, the inner cavity surface of the stop ring is slidably connected with a push rod, the top end of the push rod is fixedly connected with a push handle, the bottom end of the push rod is fixedly connected with a piston slidably connected with the inner cavity of the gas cylinder, and a spring is arranged in the inner cavity of the gas cylinder, and the first end and the second end of the spring are respectively abutted between the piston and the inner cavity bottom end of the gas cylinder.

[0011] Preferably, the fixed component includes two threaded sleeves and a plurality of wedge-shaped blocks, the two threaded sleeves are symmetrically installed on the outer surfaces of the two connecting pipes away from each other, the outer surfaces of the two threaded sleeves are respectively provided with external threads, and the outer surfaces of the two threaded sleeves are respectively provided with two threaded rings threadedly connected with the two external threads.

[0012] Preferably, a plurality of through grooves are annularly and arrayed on the outer surfaces of the two threaded sleeves, and the front sides of the vertical ends of the inner cavities of the plurality of through grooves are symmetrically provided with hinge holes.

[0013] Preferably, the plurality of wedge-shaped blocks are rotatably arranged in the inner cavities of the plurality of through grooves, the front sides of the vertical ends of the plurality of wedge-shaped blocks are respectively provided with hinge rods rotatably connected with the hinge holes, and the end faces of the plurality of wedge-shaped blocks close to each other are respectively fixedly provided with a plurality of metal springs.

[0014] Compared with the prior art, the utility model has following beneficial effects: the utility model discloses through setting up fixed assembly makes the connecting pipe of valve body both ends respectively with the drainage pipe of different caliber clamping link, then through sealing assembly to the gap between drainage pipe and two connecting pipes seal, so that this device can clamping install the drainage pipe of different caliber, can also avoid appearing the leakage, the loosening and so on fault hidden danger, greatly promoted the adaptability of device to complex drainage pipeline construction. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is whole structure schematic diagram of the utility model;

[0016] Figure 2 It is whole cross section structure schematic diagram of the utility model;

[0017] Figure 3 It is cross section connection structure schematic diagram of valve body and sealing assembly in the utility model;

[0018] Figure 4 It is local cross section structure schematic diagram of connecting pipe and fixed assembly in the utility model;

[0019] Figure 5 It is cross section structure schematic diagram of fixed assembly in the utility model.

[0020] In the drawing: 1, valve body;2, connecting pipe;3, fixed assembly;31, threaded sleeve;311, outer convex thread;312, hinged hole;313, through slot;32, wedge block;321, metal elastic sheet;322, hinged rod;33, threaded ring;4, sealing assembly;41, air cylinder;411, stop ring;412, push rod;413, push handle;414, piston;42, air pipe;43, one-way air valve;44, spring;45, air bag;47, air outlet hole;5, water stop cavity;6, air cavity;7, valve flap. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0022] As Figures 1-5 Shown, a kind of water stop valve used in construction engineering underground drainage engineering, including valve body 1 and two connecting pipes 2, valve body 1 inner cavity is divided into water stop cavity 5 and air cavity 6 two parts, two connecting pipes 2 are symmetrically installed at both ends of valve body 1 height direction, two connecting pipes 2 are all communicated with water stop cavity 5, two connecting pipes 2 outer surfaces are respectively provided with fixed assembly 3 on mutually far side, valve body 1 top end is provided with sealing assembly 4 communicated with air cavity 6, water stop cavity 5 inner cavity is installed with valve flap 7;

[0023] The utility model discloses a valve body 1 both ends of the connecting pipe 2 is connected with the drainage pipe of different caliber respectively through setting fixed component 3, and then the gap between the drainage pipe and two connecting pipes 2 is sealed through sealing component 4, so that the device can be clamped and installed the drainage pipe of different caliber, and the leakage, loosening and other hidden troubles can be avoided.

[0024] When the water flow passes through the connecting pipe 2 and flows into the water stop cavity 5, the water flow pushes the valve disc 7 to lift up, and the water flow passes through the valve smoothly.

[0025] Specifically, the sealing component 4 includes a gas cylinder 41 and two air bags 45, the two air bags 45 are respectively glued and installed on the inner cavity surfaces of the two connecting pipes 2, the outer surfaces of the two air bags 45 are respectively connected with two air tubes 42, and the ends, away from the two air bags 45, of the two air tubes 42 are connected into the inner cavity of the air cavity 6.

[0026] The gas cylinder 41 is installed through the top end of the valve body 1, the inner cavity bottom end of the gas cylinder 41 is connected with the air outlet hole 47 in the air cavity 6, and the outer surface lower side of the gas cylinder 41 is connected with the one-way air valve 43 in the inner cavity.

[0027] The stop ring 411 is fixedly installed at the upper end of the inner cavity of the gas cylinder 41, the push rod 412 is slidably connected to the inner cavity surface of the stop ring 411, the top end of the push rod 412 is fixedly connected with the push handle 413, the bottom end of the push rod 412 is fixedly connected with the piston 414 which is slidably connected to the inner cavity of the gas cylinder 41, and the spring 44 is arranged in the inner cavity of the gas cylinder 41.

[0028] After the drainage pipe is inserted into the inner cavity of the connecting pipe 2, the push handle 413 is pressed down, the push handle 413 pushes the piston 414 down through the push rod 412, so that the piston 414 pushes the air in the inner cavity of the gas cylinder 41 into the air cavity 6, and as the air pressure in the air cavity 6 increases, the high pressure in the air cavity 6 is introduced into the two air bags 45 through the two air tubes 42, so that the two air bags 45 increase the volume in the two connecting pipes 2, thereby clamping the drainage pipe and avoiding the gap between the drainage pipe and the inner wall of the connecting pipe 2.

[0029] The piston 414 is reset by the tension of the spring 44, and when the piston 414 is reset, the negative pressure is generated in the piston 414, so that the external air is sucked into the inner cavity of the gas cylinder 41 through the one-way air valve 43 for the next work.

[0030] Specifically, the fixing assembly 3 comprises two threaded sleeves 31 and a plurality of wedge blocks 32, the two threaded sleeves 31 are symmetrically installed on the outer surfaces of the two connecting pipes 2 away from each other, the outer surfaces of the two threaded sleeves 31 are provided with external convex threads 311, and the outer surfaces of the two threaded sleeves 31 are respectively provided with two threaded rings 33 which are threadedly connected with the two external convex threads 311;

[0031] A plurality of through grooves 313 are annularly arranged on the outer surfaces of the two threaded sleeves 31, and hinge holes 312 are symmetrically arranged on the front sides of the vertical ends of the inner cavities of the plurality of through grooves 313;

[0032] The plurality of wedge blocks 32 are respectively rotationally arranged in the inner cavities of the plurality of through grooves 313, hinge rods 322 are respectively arranged on the front sides of the height direction ends of the plurality of wedge blocks 32 and are rotatable with the hinge holes 312, and a plurality of metal springs 321 are respectively fixedly arranged on the end faces of the plurality of wedge blocks 32 which are close to each other;

[0033] When the drain pipe is inserted into the inner cavity of the connecting pipe 2, the threaded ring 33 which is threadedly installed on the outer surface of the threaded sleeve 31 is rotated, the threaded ring 33 is slid towards the valve body 1, the inclined surfaces of the plurality of wedge blocks 32 are pushed, the bottom ends of the plurality of wedge blocks 32 are rotated towards the axial center of the inner cavity of the threaded sleeve 31, and thus the plurality of metal springs 321 of the bottom ends of the plurality of wedge blocks 32 clamp the outer surface of the drain pipe.

[0034] It should be particularly pointed out that the one-way air valve 43 used in the utility model is of the DXF6-G type, and the specific installation mode, connection mode and control method are all conventional designs, and the utility model will not be described in detail.

[0035] The basic principles and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A stop valve for use in a construction project underground drainage project, comprising a valve body (1) and two connecting pipes (2), characterized in that: The valve body (1) is divided into two parts of water stop cavity (5) and air cavity (6), two connecting pipes (2) are symmetrically installed on both ends of the valve body (1) in the height direction, both connecting pipes (2) are communicated with the water stop cavity (5), both connecting pipes (2) are respectively provided with a fixed assembly (3) on the side away from each other, the top of the valve body (1) is provided with a sealing assembly (4) communicated with the air cavity (6), and the water stop cavity (5) is provided with a valve (7) in the cavity.

2. A stopcock for use in a building engineering underground drainage system according to claim 1, characterised in that: The sealing assembly (4) comprises a gas cylinder (41) and two air bags (45), two air bags (45) are respectively glued and installed on the inner surface of the connecting pipe (2), and two air tubes (42) are respectively connected to the outer surface of the air bag (45).

3. A stopcock for use in a building engineering underground drainage system according to claim 2, characterised in that: The gas cylinder (41) is installed through the top of the valve body (1), the gas cylinder (41) is provided with an air outlet (47) communicated with the air cavity (6) at the bottom of the inner cavity, and a one-way air valve (43) is installed through the lower side of the outer surface of the gas cylinder (41) and communicated with the inner cavity.

4. A stopcock for use in a building engineering underground drainage system according to claim 3, characterised in that: The gas cylinder (41) is fixedly installed at the upper end of the inner cavity, the inner surface of the stop ring (411) is slidably connected with a push rod (412), the top of the push rod (412) is fixedly connected with a push handle (413), the bottom of the push rod (412) is fixedly connected with a piston (414) which is slidably connected with the inner cavity of the gas cylinder (41), and a spring (44) is arranged in the inner cavity of the gas cylinder (41). The first end and the second end of the spring (44) are respectively abutted between the piston (414) and the bottom of the inner cavity of the gas cylinder (41).

5. A stopcock for use in a building engineering underground drainage system according to claim 2, characterised in that: The fixed assembly (3) comprises two threaded sleeves (31) and a plurality of wedge blocks (32), two threaded sleeves (31) are symmetrically installed on the outer surfaces of two connecting pipes (2) away from each other, threaded sleeves (31) are provided with external threads (311) on the outer surface, and two threaded rings (33) are respectively installed on the outer surface of the threaded sleeve (31) and screwed with the external threads (311).

6. A stopcock for use in a building engineering underground drainage system according to claim 5, characterised in that: A plurality of through grooves (313) are arranged in the inner cavity of the threaded sleeve (31) in a ring array, and a hinge hole (312) is symmetrically arranged on the front side of the vertical end of the through groove (313).

7. A stopcock for use in a building engineering underground drainage system according to claim 6, characterised in that: A plurality of wedge blocks (32) are respectively arranged in the inner cavity of the through groove (313), a hinge rod (322) is arranged on the front side of the end of the wedge block (32) in the height direction and rotatably connected with the hinge hole (312), and a plurality of metal springs (321) are respectively arranged on the end face of the wedge block (32) and fixedly connected with the hinge rod (322).

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