A foundation pit drainage device for avoiding silt blockage

Abstract

The present invention relates to the technical field of foundation pit drainage, and discloses a foundation pit drainage device for avoiding silt blockage, including a drainage joint, a connecting ring is sleeved on the upper surface of the drainage joint, a connecting protrusion is provided on the inner wall of the connecting ring, the connecting protrusion is sleeved on a spiral strip, and the spiral strip is fixedly arranged on the outer surface of the drainage joint, and a first movable slide groove is provided on the top surface of the connecting ring. By arranging an extrusion plate inside the drainage joint, not only can the extrusion plate be moved downward, but also the groundwater inside the drainage joint can be reversely discharged from the filter hole opened on the filter baffle to the outside of the drainage joint, and the reverse and rapid discharge of groundwater outside the drainage joint can effectively flush impurities adhering to the filter hole of the filter baffle, thereby preventing the filter hole of the filter baffle from being blocked to a certain extent.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit drainage, in particular to a foundation pit drainage device for avoiding silt blockage. Background Art

[0002] Foundation pit drainage refers to the process of groundwater seeping into the pit during excavation because the groundwater level is higher than the bottom of the excavation. In order to ensure that the foundation pit can be constructed under dry conditions, prevent slope instability, foundation sand flow, pit bottom uplift, pit bottom pipe burst and reduced foundation bearing capacity, it is necessary to carry out precipitation work. Commonly used foundation pit drainage methods include open ditch drainage and well point precipitation.

[0003] In the prior art, the method for open ditch drainage is generally to directly place the pumping end of the pump directly at the connection between the open ditch and the sump. Although this method can discharge the groundwater in the foundation pit, since the groundwater often moves a certain amount of silt when it flows, if the pump is used for a long time to directly pump, it is very likely that the silt in the groundwater will enter the inside of the pump, causing the pump to be blocked.

[0004] In this regard, we proposed a foundation pit drainage device that avoids silt blockage. Summary of the invention

[0005] The present invention provides a foundation pit drainage device that avoids silt clogging. The device has the feature that not only can the extrusion plate quickly and effectively squeeze the groundwater inside the drainage joint when it moves downward, so that the groundwater inside the drainage joint can reversely flow out of the drainage joint from the filter holes opened on the filter baffle, but also the reverse and rapid discharge of groundwater out of the drainage joint can effectively flush impurities adhered to the filter holes of the filter baffle, thereby solving the problems mentioned in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a foundation pit drainage device for avoiding silt blockage, comprising a drainage joint, a connecting collar is sleeved on the upper end surface of the drainage joint, two groups of connecting protrusions are arranged on the inner wall of the connecting collar, each group of the connecting protrusions is clamped between two adjacent spiral strips, and the spiral strips are fixedly arranged on the outer surface of the drainage joint, and a first movable slide groove is opened on the top surface of the connecting collar;

[0007] A mounting base is sleeved on the lower surface of the drainage joint, and a plurality of silt baffles are evenly arranged on the mounting base, each of which is connected to one end of a connecting scraper, and the connecting scraper is in contact with the outer surface of the drainage joint;

[0008] An extrusion plate is also provided inside the drainage joint, a fixed connection is formed between the top of the extrusion plate and an external hydraulic rod, and an embedded baffle is rotatably provided inside the extrusion plate.

[0009] As an optional solution of the foundation pit drainage device for avoiding silt blockage described in the present invention, one end of the first connecting rod is slidably arranged inside the first movable slide groove, and the other end of the first connecting rod is fixedly arranged on the external hydraulic rod.

[0010] As an optional solution for a foundation pit drainage device for avoiding silt clogging as described in the present invention, the bottom of the connecting ring is also connected to one end of a plurality of groups of second connecting rods, and the other end of each group of second connecting rods is fixedly set on the top surface of the extrusion moving block, and the extrusion moving block is set inside the silt baffle, and the extrusion moving block and the inner wall of the silt baffle are in contact with each other.

[0011] As an optional solution for a foundation pit drainage device for avoiding silt clogging described in the present invention, wherein: the bottom of each silt baffle is fixedly connected to a rotating block, the rotating block is rotatably arranged inside the mounting base, and a storage cavity is also opened inside each silt baffle, one end of a connecting spring is slidably arranged inside the storage cavity, and the other end of the connecting spring is fixedly arranged on the mounting base, and the drainage joint is further provided with a number of filter baffles corresponding to the number of silt baffles.

[0012] As an optional solution for a foundation pit drainage device for avoiding silt clogging as described in the present invention, the inner wall of the drainage joint is also provided with a first rotating groove, a second rotating groove, a first movable straight groove and a second movable straight groove, the first rotating groove is opened on the inner wall of the upper end of the drainage joint, and the second rotating groove is opened on the inner wall of the lower end of the drainage joint, and the first movable straight groove and the second movable straight groove are opened between the first rotating groove and the second rotating groove.

[0013] As an optional solution for a foundation pit drainage device that avoids silt blockage as described in the present invention, a limit stop block is provided at the bottom end of the first movable straight groove, the limit stop block is rotatably provided on the first movable straight groove, and a movable inclined surface is also provided at the connection between the first movable straight groove and the second rotating groove.

[0014] As an optional solution for a foundation pit drainage device for avoiding silt clogging described in the present invention, a first connecting through hole is provided on the upper surface and the lower surface of the extrusion plate, and a movable slide groove is also provided on the curved surface of the extrusion plate, and a second connecting through hole is provided on the upper surface and the lower surface of the embedded baffle, and the second connecting through hole is staggered with the first connecting through hole.

[0015] As an optional solution for a foundation pit drainage device that avoids silt clogging as described in the present invention, one end of a third connecting rod is connected to the arc surface of the embedded baffle, and the other end of the third connecting rod is slidably arranged inside the first movable straight groove through a ball bearing, and the rod body of the third connecting rod is slidably arranged inside the movable slide groove.

[0016] As an optional solution for a foundation pit drainage device that avoids silt clogging as described in the present invention, a water outlet groove is also opened on the inner wall of the drainage joint, one end of the water outlet groove is connected to the inside of the drainage joint, and the other end of the water outlet groove is connected to the water outlet pipe.

[0017] As an optional solution for a foundation pit drainage device that avoids silt clogging as described in the present invention, one end of a movable slider is fixedly arranged at the bottom of the drainage joint, and the other end of the movable slider is slidably arranged inside a second movable slide groove, and the second movable slide groove is opened on the mounting base, and a fixing frame is also connected to the outer surface of the drainage joint, and the fixing frame is used to install and fix the drainage joint.

[0018] The present invention has the following beneficial effects:

[0019] The foundation pit drainage device for avoiding clogging with silt is provided with an extrusion plate inside the drainage joint, and the extrusion plate is fixedly connected to one end of an external hydraulic rod. When the extrusion plate moves downward, the groundwater inside the drainage joint can be effectively and quickly squeezed, so that the groundwater inside the drainage joint can reversely flow out of the drainage joint from the filter holes opened on the filter baffle. The reverse and rapid discharge of groundwater out of the drainage joint can effectively wash away impurities adhered to the filter holes of the filter baffle, thereby preventing the filter holes of the filter baffle from being blocked to a certain extent, which causes the problem of reduced filtering efficiency of the filter baffle.

[0020] 2. The foundation pit drainage device for avoiding silt clogging can not only effectively smooth and compact the silt on one side of the silt baffle by rotating the connecting ring, so that the silt baffle can block more silt, but also the silt baffle will rotate accordingly before the silt baffle is offset at an angle, so that the connecting scraper arranged on the silt baffle can complete the scraping effect of impurities or silt adhering to the outer surface of the drainage joint, so as to further improve the filtering effect of the upper filter baffle of the drainage joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the connection structure between the silt baffle and the connecting ring of the present invention.

[0023] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0024] Figure 4 It is a schematic diagram of the structure of the drainage joint of the present invention when viewed from above.

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the local drainage joint of the present invention.

[0026] Figure 6 It is a schematic diagram of the internal structure of the drainage joint of the present invention.

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0028] Figure 8 It is a schematic diagram of the structure of the extrusion disk of the present invention.

[0029] Fig. 9 It is a schematic diagram of the embedded baffle structure of the present invention.

[0030] In the figure: 1. Drainage joint;

[0031] 101, mounting base; 102, silt baffle; 103, connecting ring; 104, first moving chute; 105, filter baffle; 106, first connecting rod; 107, water outlet pipe; 108, second connecting rod; 109, spiral strip; 110, connecting protrusion; 111, extrusion moving block; 112, connecting scraper; 113, second moving chute; 114, moving slider; 115, first rotating groove; 116, first Two rotating grooves; 117, first movable straight groove; 118, second movable straight groove; 119, extrusion plate; 120, embedded baffle; 121, water outlet groove; 122, first connecting hole; 123, third connecting rod; 124, rotating block; 125, storage cavity; 126, connecting spring piece; 127, limit stop block; 128, second connecting hole; 129, movable groove; 130, movable inclined plane; 131, fixed frame. DETAILED DESCRIPTION

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

[0033] For example, see Figure 1-Figure 9 A foundation pit drainage device for avoiding silt blockage includes a drainage joint 1, a connecting ring 103 is sleeved on the upper end surface of the drainage joint 1, two groups of connecting protrusions 110 are arranged on the inner wall of the connecting ring 103, each group of connecting protrusions 110 is clamped between two adjacent spiral strips 109, and the spiral strips 109 are fixedly arranged on the outer surface of the drainage joint 1, and a first movable slide groove 104 is opened on the top surface of the connecting ring 103;

[0034] The lower surface of the drainage joint 1 is sleeved with a mounting base 101, and a plurality of silt baffles 102 are evenly arranged on the mounting base 101, and one end of a connecting scraper 112 is connected to each silt baffle 102, and the connecting scraper 112 is in contact with the outer surface of the drainage joint 1;

[0035] An extrusion plate 119 is also provided inside the drainage joint 1 , and a fixed connection is formed between the top of the extrusion plate 119 and the external hydraulic rod. An embedded baffle 120 is also rotatably provided inside the extrusion plate 119 .

[0036] The bottom of the connecting ring 103 is also connected to one end of several groups of second connecting rods 108, and the other end of each group of second connecting rods 108 is fixedly set on the top surface of the extrusion moving block 111, and the extrusion moving block 111 is set inside the silt baffle 102, and the extrusion moving block 111 and the inner wall of the silt baffle 102 are in contact with each other.

[0037] A first rotating groove 115, a second rotating groove 116, a first movable straight groove 117 and a second movable straight groove 118 are also provided on the inner wall of the drain joint 1. The first rotating groove 115 is provided on the inner wall of the upper end of the drain joint 1, and the second rotating groove 116 is provided on the inner wall of the lower end of the drain joint 1, and the first movable straight groove 117 and the second movable straight groove 118 are provided between the first rotating groove 115 and the second rotating groove 116.

[0038] A limit stopper 127 is disposed at the bottom end of the first movable straight groove 117 . The limit stopper 127 is rotatably disposed on the first movable straight groove 117 . A movable inclined surface 130 is also disposed at the connection between the first movable straight groove 117 and the second rotating groove 116 .

[0039] A first connecting hole 122 is provided on the upper and lower surfaces of the extrusion disk 119, and a movable groove 129 is also provided on the curved surface of the extrusion disk 119. A second connecting hole 128 is provided on the upper and lower surfaces of the embedded baffle 120, and the second connecting hole 128 is staggered with the first connecting hole 122.

[0040] One end of the third connecting rod 123 is connected to the arc surface of the embedded baffle 120, and the other end of the third connecting rod 123 is slidably arranged inside the first movable straight groove 117 through a ball, and the rod body of the third connecting rod 123 is slidably arranged inside the movable through groove 129.

[0041] A water outlet groove 121 is also provided on the inner wall of the drainage joint 1 , one end of the water outlet groove 121 is connected to the inside of the drainage joint 1 , and the other end of the water outlet groove 121 is connected to the water outlet pipe 107 .

[0042] One end of a movable slider 114 is fixedly set at the bottom of the drain connector 1, and the other end of the movable slider 114 is slidably set inside the second movable slot 113. The second movable slot 113 is opened on the mounting base 101. A fixing frame 131 is also connected to the outer surface of the drain connector 1. The fixing frame 131 is used to install and fix the drain connector 1.

[0043] In this embodiment, a drainage joint 1 is provided between the water pump and the drainage point of the foundation pit, so that the groundwater flowing inside the foundation pit will be filtered by the drainage joint 1 and then pumped out by the water pump.

[0044] Since a mounting base 101 is rotatably provided at the bottom of the drainage joint 1, and a plurality of silt baffles 102 are provided on the mounting base 101, and a filtering hole is provided on each silt baffle 102, it should be noted that the aperture of the filtering hole can be adjusted by the user according to his own needs and actual conditions. This means that even if the groundwater flowing inside the foundation pit contains silt, the filtering holes provided on the plurality of silt baffles 102 can effectively block the silt outside the silt baffle 102.

[0045] Since a plurality of filter baffles 105 are also provided on the drainage joint 1, and filter holes are also provided on the filter baffles 105, and the aperture of the filter holes provided on the filter baffles 105 is smaller than the aperture of the filter holes provided on the silt baffle 102, even after being filtered by the silt baffle 102, the groundwater still contains a certain amount of impurities, and a certain degree of filtration can be performed through the filter holes provided on the filter baffles 105. This arrangement also ensures to a certain extent that the impurity content of the groundwater entering the drainage joint 1 is low, so as to prevent the groundwater from containing too much impurities, thereby causing blockage inside the drainage joint 1.

[0046] Since a water outlet groove 121 is opened on the inner wall of the drainage joint 1, and the other end of the water outlet groove 121 is connected to the water outlet pipe 107, and the water outlet pipe 107 is connected to an external water pump, the groundwater inside the foundation pit will be pumped out of the foundation pit through the water outlet groove 121 and the water outlet pipe 107 after entering the drainage joint 1.

[0047] After the water pump has been pumping water for a period of time, even if the impurities in the groundwater are filtered through the filter holes on the filter baffle 105 and cannot enter the drainage joint 1 very well, some impurities with larger particle sizes will still remain in the filter holes. Over time, the filter holes on the filter baffle 105 will be blocked, resulting in the problem of reduced drainage efficiency of the drainage joint 1.

[0048] Therefore, by arranging a squeeze plate 119 inside the drain joint 1, and forming a fixed connection between the top of the squeeze plate 119 and the external hydraulic rod, after the water pump has been pumping water for a period of time, the user can control the movement of the hydraulic rod to drive the squeeze plate 119 to move inside the drain joint 1;

[0049] On the one hand, since the squeezing plate 119 is located above the water outlet groove 121 when it is in the initial position, when the squeezing plate 119 moves downward, the squeezing plate 119 will block the water inlet of the water outlet groove 121, and before the squeezing plate 119 is reset, the groundwater inside the drainage joint 1 will not be discharged from the drainage joint 1 through the water outlet groove 121. This arrangement is to allow the squeezing plate 119 to move downward, and the bottom surface of the squeezing plate 119 will squeeze the groundwater inside the drainage joint 1, thereby allowing the groundwater inside the drainage joint 1 to flow out of the drainage joint 1. The sewage can only be discharged from the drainage joint 1 through the filter holes opened in the filter baffle 105. In this way, the groundwater inside the drainage joint 1 can complete the backwashing of the filter holes on the filter baffle 105, so that to a certain extent, the relatively clean groundwater can complete the flushing effect of the impurities blocked inside the filter baffle 105, thereby solving the problem that some impurities with larger particle sizes will remain in the filter holes, which will cause the filter holes on the filter baffle 105 to be blocked over time, thereby causing the drainage efficiency of the drainage joint 1 to be reduced.

[0050] On the other hand, since an embedded baffle 120 is also provided inside the extrusion disc 119, the embedded baffle 120 is slidably arranged inside the extrusion disc 119, and the embedded baffle 120 is also slidably arranged inside the first movable straight groove 117 through the third connecting rod 123, and the extrusion disc 119 and the embedded baffle 120 are respectively provided with a first connecting through hole 122 and a second connecting through hole 128, but the first connecting through hole 122 and the second connecting through hole 128 are in a misaligned state in the initial state, which makes it possible for the extrusion disc 119 to effectively squeeze the groundwater inside the drainage joint 1 through this arrangement after the extrusion disc 119 moves downward, thereby completing the backwashing effect of the filter holes on the filter baffle 105;

[0051] When the squeezing disc 119 moves to the maximum displacement, if the squeezing disc 119 is directly reset, the groundwater squeezed out of the drainage joint 1 by the squeezing disc 119 will be sucked back into the drainage joint 1 through the filter holes provided on the filter baffle 105. This arrangement may also cause impurities flushed out of the filter holes of the filter baffle 105 to return to the filter holes again.

[0052] Therefore, by setting a limit stopper 127 at the bottom end of the first movable straight groove 117, when the embedded baffle 120 follows the extrusion plate 119 to move to the bottom end of the first movable straight groove 117, the third connecting rod 123 will contact the limit stopper 127 and drive the limit stopper 127 to flip. It should be noted that the flipping method of the limit stopper 127 can only be flipped downward, and the limit stopper 127 is rotatably set at the bottom end of the first movable straight groove 117 by a rotating rod and a torsion spring. Therefore, when the third connecting rod 123 passes through the limit stopper 127, the limit stopper 127 will be reset under the reset elastic force of the torsion spring, so that the third connecting rod 123 can no longer be reset to the initial position from the first movable straight groove 117;

[0053] Since the first movable straight groove 117 and the second rotating groove 116 are interconnected, when the third connecting rod 123 connected to the embedded baffle 120 cannot be reset to the initial position from the first movable straight groove 117, the embedded baffle 120 needs to be moved upward and reset under the drive of the extrusion plate 119, the third connecting rod 123 connected to the embedded baffle 120 will be reset and moved upward accordingly via the second rotating groove 116.

[0054] It should be noted that since the movable inclined surface 130 is provided at the bottom end of the first movable straight groove 117 and on the limit stopper 127 , when the third connecting rod 123 is reset and moved upward, the movable inclined surface 130 can also smoothly allow the third connecting rod 123 to enter the second rotating groove 116 .

[0055] Since the second rotating groove 116 is spirally arranged, when the third connecting rod 123 enters the second rotating groove 116, the third connecting rod 123 will rotate accordingly, thereby driving the embedded baffle 120 to rotate synchronously. Since a movable through groove 129 is also provided on the extrusion disk 119, when the third connecting rod 123 rotates, it will not get stuck due to the setting of the movable through groove 129. Moreover, when the third connecting rod 123 rotates to the other end of the second rotating groove 116, the second connecting through hole 128 provided on the embedded baffle 120 coincides with the first connecting through hole 122 provided on the extrusion disk 119.

[0056] Since the first connecting through hole 122 and the second connecting through hole 128 are overlapped at this time, and the other end of the second rotating groove 116 is connected to the second movable straight groove 118, even if the extrusion plate 119 passes through the filter baffle 105 again, the groundwater entering the drainage joint 1 can pass through the connected first connecting through hole 122 and the second connecting through hole 128 and flow inside the drainage joint 1. Therefore, the reset of the extrusion plate 119 cannot generate negative pressure, effectively preventing the groundwater discharged from the drainage joint 1 from being quickly sucked back into the drainage joint 1 by the reset of the extrusion plate 119, and further preventing the impurities discharged from the filter hole of the filter baffle 105 from quickly returning to the filter hole again;

[0057] It should be noted that, after the third connecting rod 123 moves to the other end of the second rotating groove 116, since the other end of the second rotating groove 116 is connected to the second movable straight groove 118, as the extrusion plate 119 continues to reset, the third connecting rod 123 will also enter the second movable straight groove 118 from the second rotating groove 116, so that the second connecting through hole 128 on the embedded baffle 120 remains in a state of coincidence with the first connecting through hole 122 on the extrusion plate 119, so that when the extrusion plate 119 is reset, no corresponding negative pressure is generated, thereby preventing the groundwater discharged from the drainage joint 1 from quickly entering the drainage joint 1;

[0058] Furthermore, since the other end of the second movable straight groove 118 is connected to the first rotating groove 115, when the extrusion plate 119 is reset to the other end of the second movable straight groove 118, the third connecting rod 123 will slide from the second movable straight groove 118 into the first rotating groove 115. Since the first rotating groove 115 is also spirally arranged, when the third connecting rod 123 enters the first rotating groove 115, the third connecting rod 123 will reset and rotate, thereby allowing the second connecting through hole 128 on the embedded baffle 120 to be connected to the first connecting through hole 128 on the extrusion plate 119 again. The connecting through hole 122 is misaligned. At the same time, since the other end of the first rotating groove 115 is connected to the first movable straight groove 117, when the third connecting rod 123 moves to the other end of the first rotating groove 115, the third connecting rod 123 will re-enter the first movable straight groove 117. At this time, the extrusion plate 119 is also reset to its initial position. This setting also allows the subsequent extrusion plate 119 to move downward again, and the groundwater in the drainage joint 1 can still be squeezed, thereby completing the backwashing effect of impurities on the filter baffle 105.

[0059] It should be noted that since a limit stop 127 is also provided between the other end of the first rotating groove 115 and the end of the first movable straight groove 117, and a movable inclined surface 130 is also provided on the limit stop 127, before the third connecting rod 123 slides from the first rotating groove 115 into the end of the first movable straight groove 117, the third connecting rod 123 will contact the limit stop 127 provided inside the first rotating groove 115, and the limit stop 127 here can also only rotate in one direction, and the rotation direction is the direction of the first movable straight groove 117. Through this arrangement, the limit stop 127 provided inside the first rotating groove 115 will also effectively prevent the subsequent third connecting rod 123 from sliding from the first movable straight groove 117 into the first rotating groove 115 when it moves downward, thereby affecting the movement effect of the extrusion plate 119.

[0060] Through the above-mentioned arrangement, not only can the squeezing plate 119 be effectively and quickly squeezed against the groundwater inside the drainage joint 1 when it moves downward, but also the groundwater inside the drainage joint 1 can be reversely discharged from the filter holes opened on the filter baffle 105 to the outside of the drainage joint 1. This method of allowing the groundwater to be reversely and quickly discharged from the drainage joint 1 can effectively flush the impurities adhering to the filter holes of the filter baffle 105, thereby preventing the filter holes of the filter baffle 105 from being blocked to a certain extent, resulting in the problem of reduced filtering efficiency of the filter baffle 105. It should be noted that during the backwashing of the filter holes of the filter baffle 105, the water pump does not suck the inside of the drainage joint 1.

[0061] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. Figure 1-Figure 9 As shown, one end of a first connecting rod 106 is slidably disposed inside the first movable sliding groove 104, and the other end of the first connecting rod 106 is fixedly disposed on the external hydraulic rod.

[0062] The bottom of each silt baffle 102 is fixedly connected to a rotating block 124, which is rotatably set inside the mounting base 101, and each silt baffle 102 is also provided with a storage cavity 125, one end of a connecting spring 126 is slidably set inside the storage cavity 125, and the other end of the connecting spring 126 is fixedly set on the mounting base 101, and the drainage joint 1 is also provided with a number of filter baffles 105 corresponding to the number of silt baffles 102.

[0063] In this embodiment: after the water pump has been pumping water for a period of time, the silt baffle 102 will always keep the silt outside the silt baffle 102, so the silt accumulated outside the silt baffle 102 will become more and more. Although the height of the silt baffle 102 is only half of the position of the filter baffle 105, even if the silt accumulates outside the silt baffle 102, it will not cause the groundwater to be unable to flow into the drainage joint 1. However, if the silt baffle 102 is not processed in time, it is very likely that the groundwater containing a large amount of silt will pass through the silt baffle 102 and enter between the drainage joint 1 and the silt baffle 102, thereby causing the filter holes of the filter baffle 105 to be blocked.

[0064] Since one end of the first connecting rod 106 is fixedly connected to the hydraulic rod, and the other end of the first connecting rod 106 is set in the first movable slot 104 opened in the connecting ring 103 through a ball sliding, this arrangement is to prevent the first connecting rod 106 from getting stuck when the connecting ring 103 is subsequently rotated and moved through the opening of the first movable slot 104;

[0065] The connecting ring 103 is sleeved on the drainage joint 1, so when the hydraulic rod moves downward, the connecting ring 103 is squeezed by the first connecting rod 106, and the connecting ring 103 moves downward synchronously on the drainage joint 1;

[0066] It should be noted that, since the connection protrusion 110 provided on the connection ring 103 is clamped between the spiral strips 109 provided on the drainage joint 1, when the connection ring 103 moves downward, this arrangement can also effectively allow the connection ring 103 to perform a corresponding rotation effect during the downward movement;

[0067] Since the bottom of the connecting ring 103 is also connected to one end of a plurality of groups of second connecting rods 108, and the other end of each group of second connecting rods 108 is fixedly arranged on the corresponding extrusion moving block 111, when the connecting ring 103 moves downward and rotates, the extrusion moving block 111 also moves downward and rotates synchronously;

[0068] Since each extrusion moving block 111 is arranged inside the corresponding silt baffle 102, and one end of the extrusion moving block 111 is in contact with the inner wall of the silt baffle 102, when the extrusion moving block 111 moves downward and rotates, on the one hand, the extrusion moving block 111 will move to the edge of the silt baffle 102, and drive the silt baffle 102 to rotate synchronously with the extrusion moving block 111. After the silt baffle 102 rotates, since one end of the connecting scraper 112 is also connected to the silt baffle 102, and the other end of the connecting scraper 112 is in contact with the outer surface of the drainage joint 1, when the silt baffle 102 rotates, the connecting scraper 112 will move along the outer surface of the drainage joint 1, thereby completing the scraping effect of impurities or silt adhering to the outer surface of the drainage joint 1.

[0069] It should be noted that since there is a certain gap between the connecting scraper 112 and the silt baffle 102, when the extrusion moving block 111 rotates and moves downward, the extrusion moving block 111 will not contact the connecting scraper 112. This setting is also to avoid the extrusion moving block 111 from contacting the connecting scraper 112 when moving, thereby causing jamming.

[0070] It should be noted that, on the one hand, the drainage joint 1 is fixed on the ground of the foundation pit through the fixing frame 131; on the other hand, the silt baffle 102 is arranged on the mounting base 101, and the mounting base 101 is also provided with a second movable groove 113, and the lower end surface of the drainage joint 1 is also provided with a movable slider 114 slidably arranged in the second movable groove 113, so even if the silt baffle 102 rotates, it will only drive the mounting base 101 to rotate synchronously, and will not get stuck.

[0071] Since the bottom end of the silt baffle 102 is provided with an extrusion slope, when the extrusion moving block 111 rotates and descends to the bottom of the silt baffle 102, the extrusion moving block 111 will contact the extrusion slope provided on the silt baffle 102, and since the silt baffle 102 is also provided with a rotating block 124, and the rotating block 124 is rotatably connected to the mounting base 101 through a rotating rod and a torsion spring, when the silt baffle 102 is squeezed by the extrusion moving block 111, the silt baffle 102 will move away from the drainage joint 1. After the silt baffle 102 is offset by an angle, the silt blocked by the silt baffle 102 and accumulated on the other side of the silt baffle 102 will be squeezed by the silt baffle 102, and because the outer surface of the silt baffle 102 is an arc-shaped surface, the squeezed silt will not only be compacted downward by the silt baffle 102, but also be spread to both sides, and this setting also increases the accumulation of silt on one side of the silt baffle 102 to a certain extent, so that the silt baffle 102 can complete the blocking effect of more silt;

[0072] At the same time, since the movement of the extrusion moving block 111 is based on the movement of the hydraulic rod, when the sludge baffle 102 is offset at an angle, the groundwater inside the drainage joint 1 is also squeezed out of the drainage joint 1 by the extrusion disk 119, and this groundwater can not only backwash the filter baffle 105, but also wash away the sludge impurities between the sludge baffle 102 and the drainage joint 1.

[0073] It should be noted that since one end of the connecting spring piece 126 is slidably arranged inside the silt baffle 102, and the other end of the connecting spring piece 126 is fixedly arranged on the mounting base 101, when the silt baffle 102 is offset at an angle, even if a gap appears between the silt baffle 102 and the mounting base 101, it will be blocked by the connecting spring piece 126. This arrangement is to prevent impurities flowing between the silt baffle 102 and the drainage joint 1 from entering the bottom of the silt baffle 102 when the silt baffle 102 is offset at an angle, thereby causing the silt baffle 102 to be unable to be effectively reset.

[0074] When the hydraulic rod is moved upward and reset, the squeezing moving block 111 will also be moved upward and reset accordingly, so as to release the contact with the squeezing inclined surface set on the silt baffle 102. After the silt baffle 102 releases the contact with the squeezing moving block 111, the torsion spring connected to the rotating block 124 can also be quickly reset, so that when the hydraulic rod is subsequently moved downward, the silt baffle 102 can still effectively squeeze the silt on the other side, and at the same time, the squeezing moving block 111 is always in the silt baffle 102, and the two will not separate.

[0075] Through the above-mentioned arrangement, not only can the silt on one side of the silt baffle 102 be effectively smoothed and compacted, so that the silt baffle 102 can block more silt, but also before the silt baffle 102 is angularly offset, the silt baffle 102 will also rotate accordingly, thereby allowing the connecting scraper 112 arranged on the silt baffle 102 to complete the scraping effect of impurities or silt adhering to the outer surface of the drain joint 1, so as to further improve the filtering effect of the upper filter baffle 105 of the drain joint 1.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A foundation pit drainage device for avoiding silt blockage, comprising a drainage joint (1), characterized in that: The upper surface of the drainage joint (1) is sleeved with a connecting ring (103), and the inner wall of the connecting ring (103) is provided with two groups of connecting protrusions (110), and each group of the connecting protrusions (110) is clamped between two adjacent spiral strips (109), and the spiral strips (109) are fixedly arranged on the outer surface of the drainage joint (1), and the top surface of the connecting ring (103) is provided with a first movable sliding groove (104); A mounting base (101) is sleeved on the lower surface of the drainage joint (1), and a plurality of silt baffles (102) are evenly spaced on the mounting base (101), and one end of a connecting scraper (112) is connected to each silt baffle (102), and the connecting scraper (112) and the outer surface of the drainage joint (1) are in contact with each other; An extrusion plate (119) is also provided inside the drainage joint (1), a top of the extrusion plate (119) is fixedly connected to an external hydraulic rod, and an embedded baffle (120) is rotatably provided inside the extrusion plate (119); The inner wall of the drainage joint (1) is also provided with a first rotating groove (115), a second rotating groove (116), a first movable straight groove (117) and a second movable straight groove (118); the first rotating groove (115) is provided on the inner wall of the upper end of the drainage joint (1), the second rotating groove (116) is provided on the inner wall of the lower end of the drainage joint (1), and the first movable straight groove (117) and the second movable straight groove (118) are provided between the first rotating groove (115) and the second rotating groove (116); A limit stopper (127) is provided at the bottom end of the first movable straight groove (117), and the limit stopper (127) is rotatably disposed on the first movable straight groove (117); The upper surface and the lower surface of the extrusion plate (119) are both provided with a first connecting through hole (122), and the arc surface of the extrusion plate (119) is also provided with a moving through groove (129), and the upper surface and the lower surface of the embedded baffle (120) are both provided with a second connecting through hole (128); One end of a third connecting rod (123) is connected to the arc surface of the embedded baffle (120), and the other end of the third connecting rod (123) is slidably arranged inside the first movable straight groove (117) via a ball.

2. A foundation pit drainage device for avoiding silt blockage according to claim 1, characterized in that: One end of a first connecting rod (106) is slidably arranged inside the first movable sliding groove (104), and the other end of the first connecting rod (106) is fixedly arranged on an external hydraulic rod.

3. A foundation pit drainage device for avoiding silt blockage according to claim 2, characterized in that: The bottom of the connecting ring (103) is also connected to one end of a plurality of groups of second connecting rods (108), and the other end of each group of second connecting rods (108) is fixedly arranged on the top surface of an extrusion moving block (111), and the extrusion moving block (111) is arranged inside the silt baffle (102), and the extrusion moving block (111) and the inner wall of the silt baffle (102) are in contact with each other.

4. A foundation pit drainage device for avoiding silt blockage according to claim 1, characterized in that: The bottom of each sludge baffle (102) is fixedly connected to a rotating block (124), the rotating block (124) being rotatably arranged inside the mounting base (101), and each sludge baffle (102) is also provided with a storage cavity (125), one end of a connecting spring (126) being slidably arranged inside the storage cavity (125), and the other end of the connecting spring (126) being fixedly arranged on the mounting base (101), and a plurality of filter baffles (105) are also arranged at the position of the drainage joint (1) corresponding to the sludge baffle (102).

5. A foundation pit drainage device for avoiding silt blockage according to claim 1, characterized in that: A moving inclined surface (130) is also provided at the connection point between the first moving straight groove (117) and the second rotating groove (116).

6. A foundation pit drainage device for avoiding silt blockage according to claim 1, characterized in that: The second connecting through hole (128) is staggered with the first connecting through hole (122), and the rod body of the third connecting rod (123) is slidably arranged inside the moving through groove (129).

7. A foundation pit drainage device for avoiding silt blockage according to claim 1, characterized in that: A water outlet groove (121) is also provided on the inner wall of the drainage joint (1), one end of the water outlet groove (121) is connected to the interior of the drainage joint (1), and the other end of the water outlet groove (121) is connected to the water outlet pipe (107).

8. A foundation pit drainage device for avoiding silt blockage according to claim 1, characterized in that: One end of a movable slider (114) is fixedly disposed on the lower end surface of the drainage joint (1), while the other end of the movable slider (114) is slidably disposed inside a second movable slide groove (113), wherein the second movable slide groove (113) is provided on the mounting base (101), and a fixing frame (131) is also connected to the outer surface of the drainage joint (1), wherein the fixing frame (131) is used to mount and fix the drainage joint (1).

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