Embedded PVC (polyvinyl chloride) direct pipe fitting

Abstract

The utility model belongs to the technical field of building drainage, and particularly relates to a pre-embedded PVC direct pipe fitting which comprises a pipe barrel, an insertion stop ring is arranged in the pipe barrel and divides the pipe barrel into an upper bell and spigot and a lower bell and spigot, and the two axial sides of the insertion stop ring are used for being connected with drainage pipelines respectively. The upper bell-and-spigot is used for bell-and-spigot connection with a drainage pipeline above the insertion ring, and the lower bell-and-spigot is used for bell-and-spigot connection with a drainage pipeline below the insertion ring; the thickness of the insertion ring is greater than or equal to that of the drainage pipeline; and a cover plate covers the top of the pipe barrel. According to the utility model, objects can be prevented from falling from the pre-embedded PVC direct pipe fitting and in the pipe fitting, the pipe opening of the pipe barrel does not need to be bound by an adhesive tape independently when the pipe barrel is used, impurities such as concrete are prevented from entering the pipe barrel, and meanwhile, an opening protection effect can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building drainage, and in particular relates to a pre-buried PVC direct pipe fitting. Background Art

[0002] When installing drainage pipes for sanitary appliances in traditional buildings, holes are reserved in the floor slabs, and the holes are sealed with mortar after the pipes are installed. This method makes the overall pipe installation process cumbersome and it is very easy for water to leak in the holes. In recent years, the embedded casings that have appeared on the market have complex structures and there is a reduction in the diameter in the middle of the casing. After use, sanitary appliances generally have poor drainage and are prone to blockage. Utility Model Content

[0003] The problem to be solved by the utility model is that objects will inevitably fall from the traditional reserved holes, which affects the construction safety.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A pre-buried PVC direct pipe fitting comprises a pipe barrel, wherein a stop ring is arranged inside the pipe barrel, the stop ring divides the pipe barrel into an upper socket and a lower socket, and the axial sides of the stop ring are respectively used to connect drainage pipes; the upper socket is used for socket connection to the drainage pipe above the stop ring, and the lower socket is used for socket connection to the drainage pipe below the stop ring; the thickness of the stop ring is greater than or equal to the wall thickness of the drainage pipe; and a cover plate is covered on the top of the pipe barrel.

[0006] Furthermore, the inner diameters of the upper and lower ends of the pipe barrel are the same, and are 0.3 to 0.5 mm larger than the outer diameter of the drainage pipe.

[0007] Furthermore, the inner wall of the pipe barrel is a straight pipe, the thickness of the stop ring is equal to the wall thickness of the drainage pipe, and after the pipe barrel is connected to the drainage pipe, the inner wall of the pipe barrel is flush with the inner wall of the stop ring.

[0008] Furthermore, the stop ring is a raised ring arranged on the inner wall of the tube barrel.

[0009] Furthermore, a base is provided at the bottom of the pipe barrel, and the base is fixed on a template provided on a floor slab, and the floor slab is a place for pre-buried PVC direct pipe fittings.

[0010] Furthermore, a nail hole reinforcement block is provided on the base, and the base is fixed on the formwork of the floor slab after iron nails are passed through the nail holes in the nail hole reinforcement block.

[0011] Furthermore, four nail hole reinforcement blocks are evenly distributed on the base, and the nail hole reinforcement blocks protrude from the base to strengthen the strength of the base at the nail holes.

[0012] Furthermore, a water stop ring is provided on the outer wall of the tube barrel.

[0013] Furthermore, the water stop ring is a circular ring arranged on the outer wall of the tube barrel and protruding from the outer wall of the tube barrel. The edge of the water stop ring is turned up, and the water stop ring and the outer wall of the tube barrel form a groove.

[0014] Furthermore, the drainage pipe is a PVC drainage pipe, and the outer diameter of the PVC drainage pipe is 32mm-200mm.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is used for the drainage pipe of sanitary appliances to pass through the floor slab instead of the traditional reserved hole. When the main body of the embedded PVC direct pipe fitting is embedded, the cover plate is covered on the upper mouth of the pipe barrel to seal the pipe mouth of the embedded PVC direct pipe fitting, which can prevent objects from falling from the embedded PVC direct pipe fitting after concrete pouring, thereby reducing the safety hazard on the construction site; when in use, there is no need to wrap the pipe mouth of the pipe barrel with tape separately to prevent concrete and other debris from entering, and at the same time, it can play a role in protecting the hole of the pipe barrel, with the characteristics of simple, safe and reliable construction, and can effectively reduce the cost of drainage pipe construction, and has great promotion and application value.

[0017] 2. The pre-buried PVC direct pipe fittings of the utility model can be directly pre-buried in the floor slab, without the need to reserve holes or seal the hanging holes later. The built-in water stop ring can avoid water leakage on the contact surface between the pipe fittings and the concrete, and there is no reduction in diameter inside the pipe fittings, which avoids the problem of poor drainage or blockage of sanitary appliances in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the pre-buried PVC direct pipe fitting of the utility model.

[0019] Reference numerals:

[0020] 1-cover plate, 2-pipe barrel, 3-water stop ring, 4-insert stop ring, 5-base, 6-nail hole reinforcement block. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of the utility model.

[0022] It should be noted that the terms "center", "up", "down", "horizontal", "left", "right", "front", "back", "lateral", "longitudinal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] The utility model provides a pre-buried PVC direct pipe fitting, with an outer pipe diameter of 32mm-200mm, which is used for sanitary ware drainage pipes to pass through the floor slab instead of the traditional reserved hole. It includes:

[0024] The pipe barrel 2 is used for socket-and-spigot connection of the PVC drainage pipe. The inner diameters of the upper and lower ends of the pipe barrel 2 are the same, which is 0.3 to 0.5 mm larger than the outer diameter of the PVC drainage pipe, so as to facilitate insertion into the PVC drainage pipe.

[0025] A plug-in stop ring 4 is arranged inside the pipe barrel 2, and the plug-in stop ring 4 divides the pipe barrel 2 into an upper socket and a lower socket. The upper socket is used for a socket connection to the PVC drainage pipe above the plug-in stop ring 4, and the lower socket is used for a socket connection to the PVC drainage pipe below the plug-in stop ring 4.

[0026] The insertion stop ring 4 is used to limit the insertion depth of the PVC drainage pipe connected to the upper and lower sockets respectively into the pipe barrel 2, and plays the role of connecting the PVC drainage pipes in the upper and lower sockets.

[0027] The thickness of the insertion stop ring 4 is the same as the wall thickness of PVC drainage pipes of various specifications, which can limit the insertion depth of the PVC drainage pipe and connect the PVC drainage pipes at both ends.

[0028] The structure of the insertion stop ring 4 is a raised ring arranged on the inner wall of the pipe barrel 2. Its function is to prevent the PVC drainage pipe from being further inserted when the PVC drainage pipe is inserted into the upper and lower openings of the pipe barrel, effectively distributing the length of the pipe inserted into the upper and lower openings of the pipe barrel; at the same time, the insertion stop ring 4 can be in close contact with the pipe opening of the PVC drainage pipe to prevent water leakage from the gap between the pipe openings of the upper and lower sections of the pipe.

[0029] The inner wall of the pipe barrel 2 is a straight pipe without a reduced diameter. After the pipe barrel 2 is connected to the PVC drainage pipe, the inner wall of the pipe barrel 2 is flush with the inner wall of the insertion stop ring 4 to ensure smooth water flow.

[0030] A base 5 is provided at the bottom of the pipe barrel 2, and the base 5 is fixed on a template set on the floor. The floor is used for pre-buried PVC direct pipe fittings. The base 5 is used to increase the contact surface between the pre-buried PVC direct pipe fittings and the template, and plays a role in stabilizing the pre-buried PVC direct pipe fittings, so that the pre-buried PVC direct pipe fittings can be stable and not prone to skew after being fixed.

[0031] The formwork is a supporting structure at the bottom of the floor slab.

[0032] A nail hole reinforcement block 6 is provided on the base 5. After an iron nail passes through the nail hole in the nail hole reinforcement block 6, the iron nail is nailed into the template, thereby fixing the embedded PVC direct pipe fitting on the template.

[0033] Four nail hole reinforcement blocks 6 are evenly distributed on the base 5 . The nail hole reinforcement blocks 6 protrude from the base 5 and are used to strengthen the strength of the base 5 at the nail holes to prevent the base 5 from being damaged after the nails are driven in.

[0034] A water stop ring 3 is provided on the outer wall of the pipe barrel 2, which is used to increase the contact surface between the outer part of the pre-buried PVC direct pipe and the concrete, and at the same time plays a water stop role to avoid water seepage and leakage.

[0035] The water stop ring 3 is a circular ring arranged on the outer wall of the pipe barrel and protruding from the outer wall of the pipe barrel. The edge of the water stop ring 3 is turned up, and the whole presents a shallow groove, which fits tightly with the poured concrete, preventing water from seeping into the structural plate or finished floor during construction through the outer wall of the embedded PVC direct pipe fitting and the concrete joint surface, avoiding water seepage in the structure behind the embedded PVC direct pipe fitting.

[0036] A matching cover plate 1 is provided on the top of the pipe barrel 2 for plugging the embedded PVC direct pipe fittings. When in use, there is no need to wrap the pipe opening of the pipe barrel 2 with tape separately to prevent concrete and other debris from entering, and at the same time, it can play a protective role in the hole of the pipe barrel.

[0037] Installation process:

[0038] First, install the cover plate 1 on the upper opening of the pipe barrel 2 to prevent objects from falling from the pipe fitting;

[0039] When the main structure floor of the building is constructed, the pre-buried PVC direct pipe fittings are placed at the position where the PVC drainage pipe passes through the floor, and the pre-buried PVC direct pipe fittings are fixed to the template with iron nails passing through the nail holes in the nail hole reinforcement block 6, so that the base 5 is close to the template;

[0040] Concrete pouring: After the concrete is poured, the water stop ring 3 is fully combined with the concrete to avoid water seepage from the periphery of the pipe barrel 2;

[0041] Remove the cover plate 1 and install the PVC drainage pipe, insert the PVC drainage pipe into the upper socket and the lower socket separated by the plug-stop ring 4 in the pipe barrel 2 respectively, and insert it to the plug-stop ring 4 to complete the socket connection between the PVC drainage pipes at both ends of the pipe barrel 2. The plug-stop ring can be made flush with the inner wall of the pipe to ensure smooth drainage.

[0042] The above technical features constitute the best implementation example of the present utility model, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the needs of different situations.

[0043] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A pre-buried PVC direct pipe fitting, comprising a pipe barrel, characterized in that: A plug-in stop ring is arranged inside the pipe barrel, which divides the pipe barrel into an upper socket and a lower socket. The axial sides of the plug-in stop ring are respectively used to connect the drainage pipe; the upper socket is used for the socket connection of the drainage pipe above the plug-in stop ring, and the lower socket is used for the socket connection of the drainage pipe below the plug-in stop ring; the thickness of the plug-in stop ring is greater than or equal to the wall thickness of the drainage pipe; and a cover plate is covered on the top of the pipe barrel.

2. The pre-buried PVC direct pipe fitting according to claim 1, characterized in that: The inner diameters of the upper and lower ends of the pipe barrel are the same, which is 0.3 to 0.5 mm larger than the outer diameter of the drainage pipe.

3. The pre-buried PVC direct pipe fitting according to claim 1, characterized in that: The inner wall of the pipe barrel is a straight pipe, and the thickness of the stop ring is equal to the wall thickness of the drainage pipe. After the pipe barrel is connected to the drainage pipe, the inner wall of the pipe barrel is flush with the inner wall of the stop ring.

4. The pre-buried PVC direct pipe fitting according to claim 1, characterized in that: The stop ring is a raised ring arranged on the inner wall of the tube barrel.

5. The pre-buried PVC direct pipe fitting according to claim 1, characterized in that: A base is arranged at the bottom of the tube barrel.

6. The pre-buried PVC direct pipe fitting according to claim 5, characterized in that: A nail hole reinforcement block is provided on the base, and the base is fixed on the formwork of the floor slab after iron nails pass through the nail holes in the nail hole reinforcement block.

7. The pre-buried PVC direct pipe fitting according to claim 6, characterized in that: Four nail hole reinforcement blocks are evenly distributed on the base, and the nail hole reinforcement blocks protrude from the base to strengthen the base strength at the nail holes.

8. The pre-buried PVC direct pipe fitting according to any one of claims 1 to 7, characterized in that: A water stop ring is arranged on the outer wall of the pipe barrel.

9. The pre-buried PVC direct pipe fitting according to claim 8, characterized in that: The water stop ring is a circular ring arranged on the outer wall of the pipe barrel and protruding from the outer wall of the pipe barrel. The edge of the water stop ring is turned up, and the water stop ring and the outer wall of the pipe barrel form a groove.

10. The pre-buried PVC direct pipe fitting according to any one of claims 1 to 7, characterized in that: The drainage pipe is a PVC drainage pipe, and the outer pipe diameter of the PVC drainage pipe is 32mm-200mm.

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