Height adjusting device for floor drain

Abstract

The utility model discloses a height adjusting device for a floor drain, which belongs to the technical field of floor drains, and adopts the technical scheme that the height adjusting device comprises a mounting pipe, a positioning pipe and a floor drain core, a water inlet runner is arranged in the mounting pipe, and a plurality of positioning grooves are distributed in the water inlet runner along the height direction; the positioning pipe is arranged in the mounting pipe in a sliding manner, a central flow channel communicated with the water inlet flow channel is formed in the positioning pipe, positioning parts matched with the positioning grooves are arranged on the positioning pipe, and the positioning parts can enter the positioning grooves with different heights under the action of external force, so that the water accumulation height in the water inlet flow channel and the central flow channel is adjusted; the floor drain core is connected to the lower end of the positioning pipe and can seal and open the central flow channel. The height of the positioning pipe in the water inlet flow channel can be changed by pressing or lifting the positioning pipe, so that the water storage height in the water inlet flow channel and the central flow channel can be adjusted, the floor drain core can be easily opened, the adjusting mode is convenient, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of floor drains, and particularly relates to a height adjusting device for floor drains. Background Art

[0002] The floor drain is an important interface between the drainage pipe system and the indoor floor. It is installed on the floor of various places such as the kitchen, bathroom and balcony. Although the floor drain is small in size, as an important part of the drainage system in the house, its performance directly affects the quality of indoor air and is very important for odor control in the bathroom.

[0003] For example, a Chinese patent with the announcement number CN206308789U discloses a magnetic suspension floor drain core, which includes a cylindrical body, a cylindrical inner shell connected to the body, and a seal. The lower end of the body is connected to a bracket. The seal includes a rod-shaped rod and a seal fixed to the upper end of the rod. The rod is inserted into the bracket. A reset mechanism is provided between the seal and the bracket to reset the seal upward after the seal moves downward. The seal can abut against the lower end of the inner shell and seal under the action of the reset mechanism. The middle part of the seal bulges upward and forms a drainage surface including a curved surface or several inclined planes on the upper side of the seal. The drainage surface of the seal also has several guide grooves extending from the middle part of the seal to the edge. The side wall of the guide groove has a guide surface arranged obliquely or curvedly and the guide surface can be subjected to the force of the water flow and cause the seal to rotate around the axis of the rod. It solves the problem of automatic sealing of floor drains in the prior art.

[0004] The above technical solution has the following defects: the floor drain core is installed at the entrance of the sewer pipe. When draining, the water on the floor can flow from the cylinder and the inner shell to the seal. The water flow presses the seal down under its own gravity and overcomes the force of the reset mechanism to open the floor drain core, so that the water flow in the cylinder is discharged into the sewer pipe. When not draining, the seal moves upward under the action of the reset mechanism until the sealing part abuts against the lower end of the inner shell, thereby achieving sealing. An S-shaped or U-shaped water seal section is generally set in the sewer pipe to prevent the odor inside the sewer from rising back into the room. The accumulated water inside the water seal section will divide the sewer pipe into two sections, and the floor drain core will separate the water seal section from the ground. The sewer pipe located between the sealing part and the water seal section is called the sealing section. The external air pressure (at the ground) is easily affected by conditions such as altitude and temperature. For example, when the seasons change or it rains, the external atmospheric pressure decreases, while the atmospheric pressure in the sealing section is not affected under the sealed state. In this case, the atmospheric pressure in the sealing section is higher than the external atmospheric pressure. Under the action of the air pressure difference, the air in the sealing section will exert a supporting force on the seal in the direction of the cylinder, while the space above the seal is limited, and the seal cannot be opened normally by the weight of the accumulated water. That is, the accumulated water cannot push the seal downward and open the floor drain core, resulting in the accumulated water above the floor drain core not being able to be smoothly discharged into the sewer pipe. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the prior art and to propose a height adjustment device for a floor drain. The technical problem to be solved by the utility model is: how to open the floor drain core more conveniently so that the water on the floor can be discharged smoothly.

[0006] The above technical objectives of the utility model can be achieved through the following technical solutions:

[0007] A height adjustment device for a floor drain comprises a mounting tube, a positioning tube and a floor drain core, wherein the mounting tube has a water inlet channel, and the water inlet channel has a plurality of positioning grooves distributed along the height direction; the positioning tube is slidably arranged in the mounting tube, and the positioning tube has a central channel connected to the water inlet channel, and the positioning tube is provided with a positioning portion adapted to the positioning groove, and the positioning portion can enter the positioning grooves at different heights under the action of external force, so as to adjust the water accumulation height in the water inlet channel and the central channel; the floor drain core is connected to the lower end of the positioning tube, and can seal and open the central channel.

[0008] In the above-mentioned height adjustment device, each of the positioning grooves can cooperate with the positioning portion to limit the positioning tube.

[0009] In the above-mentioned height adjustment device, the outer wall of the positioning tube is provided with a flange, the flange is provided with an assembly groove, and the positioning portion includes a clamping ring arranged in the assembly groove.

[0010] In the above-mentioned height adjustment device, the clamping ring and the positioning groove are interference fit.

[0011] In the above-mentioned height adjustment device, the side wall of the positioning groove has a guide surface for guiding the positioning portion.

[0012] In the above-mentioned height adjustment device, the lower end of the mounting tube has a boss, and the boss can limit the axial position of the flange.

[0013] In the above-mentioned height adjustment device, the boss and the outer wall of the positioning tube are sealed by a sealing ring.

[0014] In the above-mentioned height adjustment device, a pull ring is hinged on the upper end of the mounting tube, and the pull ring can limit the upper end of the positioning tube.

[0015] In the above-mentioned height adjustment device, the lower end of the positioning tube is detachably connected to the floor drain core, and the lower end of the mounting tube can limit the axial position of the floor drain core.

[0016] In the above-mentioned height adjustment device, the floor drain core includes a bracket, a support and a sealing cover, the bracket is connected to the positioning tube, the bracket has a water outlet that can be connected to the central flow channel, the support is arranged on the bracket, the sealing cover is located at the lower end of the positioning tube, a guide rod is arranged at the lower end of the sealing cover, the guide rod is slidably connected to the support, a valve flap is arranged at the lower end of the positioning tube, and the sealing cover and the valve flap are pressed tightly by a reset assembly.

[0017] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0018] 1. If the floor drain core below the central flow channel cannot be opened normally due to the pressure difference, the water inlet flow channel and the central flow channel can store accumulated water. Pressing the positioning tube increases the water storage volume in the water inlet flow channel and the central flow channel, and the weight of the accumulated water above the floor drain core increases accordingly. After the vertical force of the accumulated water on the floor drain core increases, the floor drain core can be opened more easily, thereby draining the accumulated water on the floor into the sewer pipe;

[0019] 2. Press or lift the positioning tube to change the height of the positioning tube in the water inlet channel. Even if the device has been installed at the sewer pipe outlet, the height of the positioning tube can be adjusted through the space of the water inlet channel, thereby changing the water volume above the floor drain core. The adjustment method is convenient and easy to operate;

[0020] 3. The structure is reasonably designed, easy to assemble and use, can be used on floors of different heights, and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the external structure of the embodiment.

[0022] Figure 2 for Figure 1 Schematic cross-sectional view of .

[0023] Figure 3 A cross-sectional schematic diagram of the installation pipe.

[0024] Figure 4 It is a cross-sectional schematic diagram of the cooperation between the installation tube and the positioning tube.

[0025] Figure 5 It is a partial cross-sectional schematic diagram of an embodiment.

[0026] Reference numerals: 100, mounting pipe; 110, water inlet channel; 120, positioning groove; 121, guide surface; 130, boss; 131, sealing groove; 132, sealing ring; 140, pull ring;

[0027] 200, positioning tube; 210, central flow channel; 220, flange; 221, assembly groove; 230, valve disc;

[0028] 300, floor drain core; 310, bracket; 311, water outlet; 320, support; 330, sealing cover; 331, guide rod; 340, connecting piece; 350, reset assembly; 351, magnetic block 1; 352, magnetic block 2;

[0029] 400, positioning portion; 410, snap ring. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] A height adjustment device for a floor drain, such as Figure 1-Figure 5 As shown, it includes an installation tube 100, a positioning tube 200 and a floor drain core 300. The installation tube 100 has a water inlet channel 110, and the water inlet channel 110 has a plurality of positioning grooves 120 distributed along the height direction; the positioning tube 200 is slidably arranged in the installation tube 100, and the positioning tube 200 has a central channel 210 connected to the water inlet channel 110, and the positioning tube 200 is provided with a positioning portion 400 adapted to the positioning groove 120, and the positioning portion 400 can enter the positioning grooves 120 of different heights under the action of external force, so as to adjust the height of water accumulation in the water inlet channel 110 and the central channel 210; the floor drain core 300 is connected to the lower end of the positioning tube 200, and can seal and open the lower end of the central channel 210. After the lower end of the central channel 210 is sealed by the floor drain core 300, the water in the water inlet channel 110 and the central channel 210 can be stored.

[0032] Preferably, each positioning groove 120 can cooperate with the positioning portion 400 to limit the positioning tube 200 .

[0033] The outer wall of the positioning tube 200 is provided with a flange 220, and a mounting groove 221 is provided on the flange 220. The positioning portion 400 includes a clamping ring 410 disposed in the mounting groove 221. The clamping ring 410 can be made of a hard material or a soft material; in some embodiments, when the clamping ring 410 is a hard clamping ring 410, the mounting tube 100 is made of a soft material, and the mounting tube 100 can be elastically deformed to ensure that the clamping ring 410 can be moved to the positioning grooves 120 at different heights.

[0034] like Figure 3 , Figure 4 As shown, the snap ring 410 is interference fit with the positioning groove 120 , and the side wall of the positioning groove 120 has a guide surface 121 for guiding the positioning portion 400 , and the guide surface 121 can be a curved surface or an inclined surface.

[0035] The lower end of the water inlet channel 110 has a boss 130, which is located within the sliding stroke of the positioning tube 200, and the boss 130 can axially limit the flange 220. According to some embodiments, the boss 130 can be an integral ring, or a plurality of limit blocks distributed at intervals in the circumferential direction, as long as it can ensure that the boss 130 can limit the flange 220 and assist in guiding when the positioning tube 200 slides.

[0036] The boss 130 and the outer wall of the positioning tube 200 are sealed by a sealing ring 132 . In some embodiments, a sealing groove 131 is opened on the boss 130 , and the sealing ring 132 is arranged in the sealing groove 131 . The inner circle of the sealing ring 132 abuts against the outer wall of the positioning tube 200 .

[0037] A pull ring 140 is hinged on the upper end of the installation tube 100 . When the upper end of the positioning tube 200 moves to the pull ring 140 , the pull ring 140 can limit the upper end of the positioning tube 200 .

[0038] In some embodiments, the lower end of the positioning tube 200 is detachably connected to the floor drain core 300. Furthermore, when the positioning tube 200 moves up to the end of the stroke, the lower end of the installation tube 100 can abut against the floor drain core 300 and limit the latter axially, thereby limiting the sliding stroke of the positioning tube 200, and then omitting the pull ring 140. In some embodiments, the outer wall of the floor drain core 300 is flush with the outer wall of the positioning tube 200, and the sliding stroke of the positioning tube 200 is limited only by the cooperation of the pull ring 140 and the boss 130; that is, the pull ring 140 and the lower end of the installation tube 100 can limit the positioning tube 200 after it moves up, and all or one of them can be set.

[0039] like Figure 2 , Figure 5 As shown, the floor drain core 300 includes a bracket 310, a support 320 and a sealing cover 330. The bracket 310 is snap-fitted or threadedly connected to the positioning tube 200. The bracket 310 has a water outlet 311 that can be connected to the central flow channel 210. The support 320 is connected to the bracket 310 through a connecting piece 340. The sealing cover 330 is located at the lower end of the positioning tube 200. A guide rod 331 is provided at the lower end of the sealing cover 330. The guide rod 331 is slidably connected to the support 320. A valve flap 230 is provided at the lower end of the positioning tube 200. The sealing cover 330 and the valve flap 230 are pressed tightly together by a reset assembly 350.

[0040] The reset assembly 350 includes a magnet 351 and a magnet 352. The magnet 351 is disposed in the support 320, and the magnet 352 is disposed in the guide rod 331. The magnetic force between the magnet 351 and the magnet 352 is a repulsive force, which causes the sealing cover 330 to press against the valve flap 230.

[0041] The working principle of the utility model is as follows:

[0042] This height adjustment device is installed at the entrance of the sewer pipe. The accumulated water on the ground can enter the top of the sealing cover 330 from the water inlet channel 110 and the central channel 210. When the weight of the accumulated water is greater than the supporting force of the reset component 350 on the sealing cover 330, the accumulated water pushes the sealing cover 330 downward, so that the water outlet 311 is connected to the central channel 210, and the accumulated water can be discharged into the sewer pipe from the water outlet 311.

[0043] When the floor drain core 300 does not drain water, the force exerted by the reset component 350 on the sealing cover 330 will cause the sealing cover 330 to press against the valve disc 230, thereby isolating the central flow channel 210 from the water outlet 311, and the floor drain core 300 is in a closed state; if the sealing cover 330 is affected by the air pressure difference and cannot be opened normally after being closed, the accumulated water on the ground cannot be discharged from the water outlet 311. It is only necessary to press the positioning tube 200 to lower the height of the positioning tube 200 in the water inlet channel 110, so that the water storage height in the water inlet channel 110 and the central flow channel 210 increases, that is, the weight of the accumulated water above the floor drain core 300 is increased, and the force of the accumulated water on the sealing cover 330 in the vertical direction is increased, and the accumulated water can smoothly press the sealing cover 330 downward, and the accumulated water on the ground can be smoothly discharged into the sewer pipe.

[0044] Alternatively, before the device is installed in the sewer pipe, the height of the positioning tube 200 in the water inlet channel 110 is manually lowered according to the current floor level, so that the water storage height in the water inlet channel 110 and the central channel 210 is increased to ensure that the seal can be opened smoothly every time, thereby avoiding the need to adjust the height of the positioning tube 200 later.

[0045] The specific embodiments described in this article are merely examples of the spirit of the utility model; technicians in the technical field to which the utility model belongs can make various modifications or additions to the described specific embodiments or replace them in a similar manner, but will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A height adjustment device for a floor drain, characterized in that: The invention comprises a mounting tube (100), a positioning tube (200) and a floor drain core (300); the mounting tube (100) has a water inlet channel (110), and the water inlet channel (110) has a plurality of positioning grooves (120) distributed along the height direction; the positioning tube (200) is slidably arranged in the mounting tube (100); the positioning tube (200) has a central channel (210) connected to the water inlet channel (110), and the positioning tube (200) is provided with a positioning portion (400) adapted to the positioning groove (120); the positioning portion (400) can enter the positioning groove (120) at different heights under the action of an external force, thereby adjusting the water accumulation height in the water inlet channel (110) and the central channel (210); the floor drain core (300) is connected to the lower end of the positioning tube (200) and can seal and open the central channel (210).

2. The height adjustment device according to claim 1, characterized in that: Each of the positioning grooves (120) can cooperate with the positioning portion (400) to limit the position of the positioning tube (200).

3. The height adjustment device according to claim 1, characterized in that: The outer wall of the positioning tube (200) is provided with a flange (220), a mounting groove (221) is provided on the flange (220), and the positioning portion (400) includes a clamping ring (410) arranged in the mounting groove (221).

4. The height adjustment device according to claim 3, characterized in that: The snap ring (410) is interference fit with the positioning groove (120).

5. The height adjustment device according to claim 4, characterized in that: The side wall of the positioning groove (120) has a guide surface (121) for guiding the positioning portion (400).

6. The height adjustment device according to claim 3, characterized in that: The lower end of the mounting tube (100) is provided with a boss (130), and the boss (130) can limit the axial position of the flange (220).

7. The height adjustment device according to claim 6, characterized in that: The boss (130) and the outer wall of the positioning tube (200) are sealed via a sealing ring (132).

8. The height adjustment device according to claim 1, characterized in that: A pull ring (140) is hingedly connected to the upper end of the installation tube (100), and the pull ring (140) can limit the upper end of the positioning tube (200).

9. The height adjustment device according to any one of claims 1 to 8, characterized in that: The lower end of the positioning tube (200) is detachably connected to the floor drain core (300), and the lower end of the installation tube (100) can limit the axial position of the floor drain core (300).

10. The height adjustment device according to claim 9, characterized in that: The floor drain core (300) comprises a bracket (310), a support (320) and a sealing cover (330); the bracket (310) is connected to the positioning tube (200); the bracket (310) is provided with a water outlet (311) capable of communicating with the central flow channel (210); the support (320) is arranged on the bracket (310); the sealing cover (330) is located at the lower end of the positioning tube (200); a guide rod (331) is arranged at the lower end of the sealing cover (330); the guide rod (331) is slidably connected to the support (320); a valve flap (230) is arranged at the lower end of the positioning tube (200); the sealing cover (330) and the valve flap (230) are pressed against each other via a reset assembly (350).

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