Tunnel drainage transition box

Abstract

The utility model discloses a tunnel drainage transition box which comprises a box body provided with a transition cavity, and the upper end of the transition cavity is provided with a water inlet; the water inlet pipe is connected with the box body and communicated with the water inlet; the coarse filtering cylinder extends into the box body and is communicated with the lower end of the water inlet pipe, filtering holes are formed in the peripheral wall, and an end sealing plate is arranged at the bottom, so that a sediment collecting space is formed at the bottom of the coarse filtering cylinder; a siphon; and the filtering enclosure surrounds one end, extending into the transition cavity, of the siphon. According to the utility model, the coarse filter cartridge is used for filtering water flow entering the box body, and filtered particles stay in the sediment collection space, so that subsequent pipelines are prevented from being influenced; when the water flow is large, the siphon effect of the siphon can be utilized to accelerate the rapid drainage of the water flow and improve the transverse drainage capacity of a tunnel hole body, so that the precipitation of calcified substances in the water flow is reduced, and the maintenance frequency of a tunnel drainage system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel structures, in particular to a tunnel drainage transition box. Background Art

[0002] With the development of transportation, more and more roads and railways are being built. When transportation is built in mountainous areas, tunnels are usually required.

[0003] During tunnel construction, since the tunnel is underground, drainage issues need to be considered to avoid poor drainage in the tunnel. The water in the tunnel soil may contain solid particles or block particles, which can easily lead to pipe blockage, resulting in erosion of the tunnel lining, damage to the supporting structure, and cause engineering accidents such as tunnel deformation, water gushing, and landslides. Therefore, the tunnel drainage system often needs to be maintained. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a tunnel drainage transition box, which can filter and block particles and reduce the maintenance frequency of the tunnel drainage system.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A tunnel drainage transition box comprises: a box body, having a transition cavity, wherein the upper end of the transition cavity has a water inlet; a water inlet pipe, connected to the box body and communicated with the water inlet; a coarse filter cartridge, extending into the box body and communicated with the lower end of the water inlet pipe, with filter holes provided on the peripheral wall and an end sealing plate provided on the bottom, wherein the filter holes are arranged vertically, and the lowest filter hole is higher than the end sealing plate, so as to form a sediment collection space at the bottom of the coarse filter cartridge; a siphon tube, one end of which extends into the transition cavity and opens downward, and the other end extends out of the transition cavity; a filter enclosure, connected to the bottom wall of the transition cavity and arranged around the end of the siphon tube extending into the transition cavity.

[0007] Furthermore, the siphon tube includes an upper vertical tube, a horizontal tube, a lower vertical tube and an extension tube, and the upper vertical tube, the horizontal tube, the lower vertical tube and the extension tube are connected in sequence. The upper vertical tube is arranged in the transition chamber and the lower end is opened downward. There is a distance between the lower end of the upper vertical tube and the bottom of the transition chamber; one end of the extension tube extends into the transition chamber and is connected with the lower end of the lower vertical tube, and the other end extends out of the transition chamber; the upper end of the upper vertical tube is connected with the upper end of the lower vertical tube through the horizontal tube.

[0008] Furthermore, the upper end of the filter enclosure is flush with the lower end of the upper vertical tube.

[0009] Furthermore, a connecting portion extending upward is provided at the upper end of the upper vertical tube, and the upper end of the connecting portion contacts and is connected and fixed to the top wall of the transition chamber.

[0010] Furthermore, a water hole is provided on the peripheral wall of the coarse filter cartridge, and the water hole is located above the filter hole.

[0011] Furthermore, a vertical shaft that can rotate along its own axis is installed in the lower vertical tube, an impeller is installed on the vertical shaft, a horizontal shaft is rotatably installed in the horizontal tube, a scraper is installed on the circumferential wall of the horizontal shaft, and the upper end of the vertical shaft is transmission-connected to the horizontal shaft. The water flow in the lower vertical tube can drive the impeller and the vertical shaft to rotate, thereby driving the horizontal shaft to rotate.

[0012] Furthermore, a first bevel gear is disposed at the upper end of the vertical shaft, and a second bevel gear matched with the first bevel gear is disposed at one end of the horizontal shaft.

[0013] Furthermore, two shaft seats which are arranged horizontally and spaced apart are arranged in the horizontal tube, and shaft holes for installing the horizontal shaft are arranged in the shaft seats.

[0014] Furthermore, a first connecting flange is provided at the upper end of the coarse filter cartridge, the outer diameter of the first connecting flange is larger than the water inlet, the coarse filter cartridge is inserted into the water inlet and the first connecting flange is attached to the outer top wall of the box body, and the first connecting flange and the box body are provided with corresponding holes for connection and fixation by fasteners.

[0015] Furthermore, a second connecting flange is provided at the bottom of the water inlet pipe, the second connecting flange is attached to the upper end of the first connecting flange, and the second connecting flange, the first connecting flange and the box body are provided with corresponding holes for connection and fixation by fasteners.

[0016] The utility model has the following beneficial effects:

[0017] A coarse filter cartridge is used to filter the water flow entering the box, and the filtered particles remain in the sediment collection space to avoid affecting the subsequent pipelines; the filter enclosure is then used to filter the water flow that is about to enter the siphon pipe, so that the particles will not be blocked at the inlet of the siphon pipe, affecting the water flow entering the siphon pipe, so that the waterway is unobstructed, and when the water flow is large, the siphon effect of the siphon pipe can be used to accelerate the rapid discharge of the water flow, increase the lateral drainage capacity of the tunnel body, thereby reducing the precipitation of calcification in the water flow, avoiding the precipitation of calcium carbonate in the pipe, and avoiding the blockage of the drainage pipeline; the utility model can filter and block particles, delay and reduce the degree and risk of subsequent pipeline blockage, and reduce the maintenance frequency of the tunnel drainage system.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a cross-sectional view of an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A magnified view of point A;

[0022] Figure 3 yes Figure 1 A magnified view of point B;

[0023] Figure 4 It is a schematic diagram of the structure of the coarse filter cartridge.

[0024] Legend:

[0025] Box body 100, transition chamber 110, water inlet 120, bottom plate 130, cover shell 140;

[0026] Water inlet pipe 200, second connecting flange 210;

[0027] Coarse filter cartridge 300, filter hole 310, end sealing plate 320, sediment collection space 330, water hole 340, first connection flange 350;

[0028] Siphon pipe 400, upper vertical pipe 410, horizontal pipe 420, lower vertical pipe 430, extension pipe 440, connecting portion 450, vertical shaft 460, impeller 470, first bevel gear 480, shaft seat 490;

[0029] Filter enclosure 500;

[0030] Horizontal shaft 600 , scraper 610 , second bevel gear 620 , and limiting head 630 . DETAILED DESCRIPTION

[0031] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] Please refer to Figure 1 and Figure 2 A tunnel drainage transition box in a preferred embodiment of the present invention includes a box body 100, a water inlet pipe 200, a coarse filter cartridge 300, a siphon 400 and a filter enclosure 500.

[0036] The box body 100 has a transition chamber 110, and the upper end of the transition chamber 110 has a water inlet 120; the water inlet pipe 200 is connected to the box body 100 and communicates with the water inlet 120; the water inlet pipe 200 is used to connect the longitudinal blind pipe installed in the side wall of the tunnel, so as to guide the water received by the longitudinal blind pipe into the transition chamber 110.

[0037] The coarse filter cartridge 300 extends into the housing 100, and is connected to the lower end of the water inlet pipe 200. The coarse filter cartridge 300 is provided with filter holes 310 on the peripheral wall, and an end sealing plate 320 is provided at the bottom of the coarse filter cartridge 300. The filter holes 310 are arranged vertically, and the lowest filter hole 310 is higher than the end sealing plate 320, so as to form a sediment collection space 330 at the bottom of the coarse filter cartridge 300, that is, the end sealing plate 320 and the peripheral wall of the bottom of the coarse filter cartridge 300 form a sediment collection space 330. One end of the siphon tube 400 extends into the transition chamber 110 and opens downward, and the other end extends out of the transition chamber 110, so that when the water flow is large, the water in the transition chamber 110 is quickly discharged by using the siphon effect. The filter enclosure 500 is connected to the bottom wall of the transition chamber 110, and the filter enclosure 500 is arranged around one end of the siphon tube 400 extending into the transition chamber 110.

[0038] The utility model provides a tunnel drainage transition box, which utilizes a coarse filter cartridge 300 to filter the water flow entering the box body 100, and the larger particles filtered out remain in the sediment collection space 330 to avoid affecting the subsequent pipeline; and then utilizes the filter enclosure 500 to filter the water flow to enter the siphon 400, so that the particles will not be blocked at the inlet of the siphon 400, affecting the water flow entering the siphon 400, so that the waterway is unobstructed, and when the water flow is large, the siphon effect of the siphon 400 can be utilized to accelerate the rapid discharge of the water flow, increase the lateral drainage capacity of the tunnel body, thereby reducing the precipitation of calcification in the water flow, avoiding the precipitation of calcium carbonate in the pipe, and avoiding the blockage of the drainage pipeline; the utility model can filter and block particles, and reduce the maintenance frequency of the tunnel drainage system.

[0039] Reference Figure 1 In some embodiments of the utility model, the siphon 400 of the utility model includes an upper vertical pipe 410, a horizontal pipe 420, a lower vertical pipe 430 and an extension pipe 440. The upper vertical pipe 410, the horizontal pipe 420, the lower vertical pipe 430 and the extension pipe 440 are connected in sequence, and the water flow in the transition chamber 110 passes through the upper vertical pipe 410, the horizontal pipe 420, the lower vertical pipe 430 and the extension pipe 440 in sequence, thereby being discharged from the transition chamber 110. The upper vertical pipe 410 is disposed in the transition chamber 110 and the lower end thereof opens downward. There is a gap between the lower end of the upper vertical pipe 410 and the bottom of the transition chamber 110, so that water can flow into the upper vertical pipe 410 through the gap. One end of the extension pipe 440 extends into the transition chamber 110 and communicates with the lower end of the lower vertical pipe 430, and the other end extends out of the transition chamber 110. The upper end of the upper vertical pipe 410 is communicated with the upper end of the lower vertical pipe 430 through the horizontal pipe 420. Thus, the U-shaped pipe structure formed by the upper vertical pipe 410, the horizontal pipe 420, and the lower vertical pipe 430 is used to realize siphon drainage.

[0040] At the beginning of drainage, the transition chamber 110 is used to store water. When the water level in the transition chamber 110 reaches the low position of the horizontal pipe 420, the water begins to flow into the horizontal pipe 420 and is finally discharged from the extension pipe 440. At this time, there is only water flow at the bottom of the horizontal pipe 420, and the water flow does not occupy the entire cross-section of the horizontal pipe 420. The water flow is a non-full pipe flow, and the system is in a gravity flow state. As the amount of water increases, the water depth in the transition chamber 110 gradually increases, the water level gradually rises, and the height of the water flow in the horizontal pipe 420 gradually rises. The water flow gradually transitions from a non-full pipe flow to a piston flow and a foam flow, and intermittently generates a siphon full pipe flow state, forming a relatively obvious negative pressure. The formation of the siphon suddenly increases the drainage capacity of the system, and the water depth of the water collection tank will fall back, and the system returns to the gravity flow mode. This change will continue for a period of time until the amount of water entering the water collection tank further increases, the water depth of the water collection tank tends to be stable, and the system gas volume decreases, and finally a stable siphon full pipe flow is formed. Specifically, the horizontal pipe 420 extends in the left-right direction, and the extension pipe 440 extends in the front-back direction.

[0041] As mentioned above, during the dry season, when the drainage volume in the tunnel is small, this system uses traditional gravity drainage. There is a certain amount of accumulated water in the water collection tank, and the physical environment in the water tank is constant, which can reduce karst crystallization. During the flood season, when the drainage volume in the tunnel is large, the system uses siphon drainage, which not only greatly improves the drainage capacity compared to gravity drainage, but also can enhance the erosion effect, remove the debris in the system, and effectively solve the problem of lateral drainage blockage.

[0042] Reference Figure 1 In some embodiments of the present invention, the upper end of the filter enclosure 500 is flush with the lower end of the upper vertical pipe 410, thereby blocking the particles in the water flow from entering the lower part of the upper vertical pipe 410 as much as possible.

[0043] Reference Figure 1 In a further embodiment of the utility model, a connection portion 450 extending upward is provided at the upper end of the upper vertical tube 410, and the upper end of the connection portion 450 contacts and is connected and fixed to the top wall of the transition chamber 110, and the connection and fixation between the upper end of the connection portion 450 and the top wall of the transition chamber 110 can be achieved by fasteners or welding. Thus, the upper vertical tube 410 is stably installed and will not be easily deformed and damaged due to the suspended bottom.

[0044] Reference Figure 1 and Figure 4 In some embodiments of the present invention, a water hole 340 is provided on the peripheral wall of the coarse filter cartridge 300. The water hole 340 is located above the filter hole 310. The diameter of the water hole 340 is larger than the filter hole 310. Therefore, when the sediment collection space 330 collects a large number of particles and gradually blocks the filter hole 310, water can also flow into the transition chamber 110 through the water hole 340 to avoid blockage. The coarse filter cartridge 300 can delay the blockage of subsequent pipelines while ensuring that it will not be easily blocked. The diameter of the water hole 340 can be 0.6 times the inner diameter of the coarse filter cartridge 300, thereby ensuring that the diameter of the water hole 340 is large enough and will not be blocked by small particles. The inner diameter of the coarse filter cartridge 300 can be 100mm-150mm.

[0045] Reference Figure 2In a further embodiment of the utility model, a vertical shaft 460 that can rotate along its own axis is installed in the lower vertical tube 430, and an impeller 470 is installed on the vertical shaft 460. A horizontal shaft 600 is rotatably installed in the horizontal tube 420, and a scraper 610 is installed on the peripheral wall of the horizontal shaft 600. The upper end of the vertical shaft 460 is transmission-connected to the horizontal shaft 600. The water flow in the lower vertical tube 430 can drive the impeller 470 and the vertical shaft 460 to rotate, thereby driving the horizontal shaft 600 to rotate. The scraper 610 can rotate with the horizontal shaft 600 to scrape or scrape the particles accumulated on the peripheral wall of the horizontal tube 420 to avoid the horizontal tube 420 being blocked by the deposition of particles. Since the horizontal tube 420 extends horizontally, particles are easily accumulated at the bottom, causing gradual blockage. The impeller 470 and the vertical shaft 460 are driven to rotate by the water flow, thereby driving the horizontal shaft 600 and the scraper 610 to rotate, so that the scraper 610 scrapes off the particles adhered to the inner wall of the horizontal pipe 420, realizing automatic cleaning of the pipeline without the need for a driving mechanism to achieve power output, and the structure is sophisticated.

[0046] Reference Figure 2 In a further embodiment of the utility model, a first bevel gear 480 is provided at the upper end of the vertical shaft 460, and a second bevel gear 620 adapted to the first bevel gear 480 is provided at one end of the horizontal shaft 600, and the transmission connection between the vertical shaft 460 and the horizontal shaft 600 is realized by meshing the second bevel gear 620 with the first bevel gear 480. The first bevel gear 480 and the second bevel gear 620 can be installed on the vertical shaft 460 and the horizontal shaft 600 by an integral connection or fasteners.

[0047] Reference Figure 2 In a further embodiment of the utility model, two shaft seats 490 are arranged horizontally and spaced apart in the horizontal tube 420. The shaft seats 490 are provided with shaft holes for installing the horizontal shaft 600. The horizontal shaft 600 is inserted into the shaft holes of the shaft seats 490. In order to reduce the rotation resistance, a bearing can be installed between the horizontal shaft 600 and the shaft holes. A stopper 630 is provided at the end of the horizontal shaft 600 facing away from the second bevel gear 620. The diameter of the stopper 630 is larger than the shaft hole of the shaft seat 490, so as to achieve axial limit.

[0048] Reference Figure 3 and Figure 4In a further embodiment of the utility model, a first connecting flange 350 is provided at the upper end of the coarse filter cartridge 300, and the outer diameter of the first connecting flange 350 is larger than the water inlet 120. The coarse filter cartridge 300 is inserted into the water inlet 120 and the first connecting flange 350 is in contact with the outer top wall of the box body 100. The first connecting flange 350 and the box body 100 are provided with corresponding holes to be connected and fixed by fasteners. During installation, the coarse filter cartridge 300 is inserted into the water inlet 120 until the first connecting flange 350 is in contact with the outer top wall of the box body 100. The first connecting flange 350 plays the role of inserting and limiting. In addition, the holes on the first connecting flange 350 are used to install fasteners (such as screws), thereby realizing the installation and fixation of the coarse filter cartridge 300.

[0049] Reference Figure 3 In a further embodiment of the utility model, a second connection flange 210 is provided at the bottom of the water inlet pipe 200, and the second connection flange 210 is attached to the upper end of the first connection flange 350. The second connection flange 210, the first connection flange 350 and the box body 100 are provided with corresponding holes to be connected and fixed by fasteners. That is, the holes on the second connection flange 210 correspond to the holes set in the first connection flange 350 and the box body 100, so that the holes on the second connection flange 210, the first connection flange 350 and the box body 100 can all be connected and fixed by using the same set of fasteners, reducing the use of fasteners.

[0050] It is understandable that the box 100 can be assembled from multiple parts, such as Figure 1 As shown, the box body 100 includes a bottom plate 130 and a cover shell 140 covering the bottom plate 130 . The cover shell 140 and the bottom plate 130 can be fixed by fasteners or welding.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel drainage transition box, characterized in that: include: The box body (100) has a transition chamber (110), and the upper end of the transition chamber (110) has a water inlet (120); A water inlet pipe (200) connected to the housing (100) and in communication with the water inlet (120); A coarse filter cartridge (300) extends into the box body (100) and is in communication with the lower end of the water inlet pipe (200). The peripheral wall is provided with filter holes (310) and the bottom is provided with an end sealing plate (320). The filter holes (310) are arranged in a vertical direction, and the lowest filter hole (310) is higher than the end sealing plate (320) to form a sediment collection space (330) at the bottom of the coarse filter cartridge (300); A siphon tube (400), one end of which extends into the transition chamber (110) with its opening facing downward, and the other end of which extends out of the transition chamber (110); The filtering enclosure (500) is connected to the bottom wall of the transition chamber (110) and is arranged around one end of the siphon tube (400) extending into the transition chamber (110).

2. The tunnel drainage transition box according to claim 1, characterized in that: The siphon pipe (400) comprises an upper vertical pipe (410), a horizontal pipe (420), a lower vertical pipe (430) and an extension pipe (440); the upper vertical pipe (410), the horizontal pipe (420), the lower vertical pipe (430) and the extension pipe (440) are connected in sequence; the upper vertical pipe (410) is arranged in the transition chamber (110) and the lower end is opened downward; there is a distance between the lower end of the upper vertical pipe (410) and the bottom of the transition chamber (110); one end of the extension pipe (440) extends into the transition chamber (110) and is connected with the lower end of the lower vertical pipe (430), and the other end extends out of the transition chamber (110); the upper end of the upper vertical pipe (410) is connected with the upper end of the lower vertical pipe (430) through the horizontal pipe (420).

3. The tunnel drainage transition box according to claim 2, characterized in that: The upper end of the filtering enclosure (500) is flush with the lower end of the upper vertical pipe (410).

4. The tunnel drainage transition box according to claim 2, characterized in that: The upper end of the upper vertical tube (410) is provided with a connecting portion (450) extending upward, and the upper end of the connecting portion (450) is in contact with and connected and fixed to the top wall of the transition chamber (110).

5. The tunnel drainage transition box according to claim 1 or 2, characterized in that: The peripheral wall of the coarse filter cartridge (300) is provided with a water passage hole (340), and the water passage hole (340) is located above the filter hole (310).

6. The tunnel drainage transition box according to claim 2, characterized in that: A vertical shaft (460) capable of rotating along its own axis is installed in the lower vertical tube (430), an impeller (470) is installed on the vertical shaft (460), a horizontal shaft (600) is rotatably installed in the horizontal tube (420), a scraper (610) is installed on the peripheral wall of the horizontal shaft (600), the upper end of the vertical shaft (460) is transmission-connected to the horizontal shaft (600), and the water flow in the lower vertical tube (430) can drive the impeller (470) and the vertical shaft (460) to rotate, thereby driving the horizontal shaft (600) to rotate.

7. The tunnel drainage transition box according to claim 6, characterized in that: A first bevel gear (480) is disposed at the upper end of the vertical shaft (460), and a second bevel gear (620) adapted to the first bevel gear (480) is disposed at one end of the horizontal shaft (600).

8. The tunnel drainage transition box according to claim 6, characterized in that: Two shaft seats (490) are arranged horizontally and spaced apart in a horizontal direction in the horizontal tube (420), and shaft holes for installing the horizontal shaft (600) are provided on the shaft seats (490).

9. The tunnel drainage transition box according to claim 1, characterized in that: A first connecting flange (350) is provided at the upper end of the coarse filter cartridge (300), the outer diameter of the first connecting flange (350) is larger than the water inlet (120), the coarse filter cartridge (300) is inserted into the water inlet (120) and the first connecting flange (350) is in contact with the outer top wall of the box body (100), and the first connecting flange (350) and the box body (100) are provided with corresponding holes so as to be connected and fixed by fasteners.

10. The tunnel drainage transition box according to claim 6, characterized in that: A second connecting flange (210) is provided at the bottom of the water inlet pipe (200), and the second connecting flange (210) is in contact with the upper end of the first connecting flange (350). The second connecting flange (210), the first connecting flange (350) and the box body (100) are provided with corresponding holes so as to be connected and fixed by fasteners.

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