A sand water separator that is easy to maintain

Abstract

The utility model relates to the technical field of sewage treatment equipment, more particularly, disclose an easily maintained sand water separator, include: water tank, water inlet is located water tank's upside, baffle is located below water inlet, the filter screen of U type is set up in water tank, is between water inlet and baffle, screw conveyor, one end is immersed in water below baffle, the other end is inclined to horizontal plane and extends fixed length upwards, U type lining, set up between the U type groove of screw conveyor and the spiral blade of screw conveyor, a plurality of mounting nuts, fixedly installed in the inner wall surface of U type groove, a plurality of mounting blocks, fixedly set up on U type lining, a plurality of mounting screws, can pass through mounting block and be connected mounting nut through screw thread, overflow, open in the lateral wall surface of water tank, can release water flow impact force, sand water mixture evenly enters water tank, still can effectively prolong the service life of separator, is convenient for the maintenance of separator.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment equipment, and in particular to an easy-to-maintain sand-water separator. Background Technology

[0002] Spiral sand separators are suitable for grit chambers in wastewater treatment plants. They are integrated devices for separating and lifting organic sand from wastewater. The installation angle of the spiral sand separator is between 20° and 30°. The sand-water mixture enters the tank through the inlet pipe. Heavier particles (such as sand) in the mixture settle at the bottom of the spiral channel due to their own weight. Driven by the spiral blades, the material is lifted along the bottom of the inclined U-shaped channel. After leaving the liquid surface, it continues to move upwards for a distance. The water in the sand gradually flows back to the tank through the gaps in the spiral channel, and the sand gradually dries at the outlet, falling into other conveying devices by its own weight. The supernatant continuously flows out from the drain pipe, achieving the purpose of sand and water separation.

[0003] However, on the one hand, in existing spiral sand separators, the bottom of the U-shaped channel is prone to direct contact with the spiral blades. After long-term use, the bottom area of ​​the U-shaped channel will be worn through by the spiral blades, rendering the equipment unusable. On the other hand, the impact of the water flow directly into the water tank is relatively large. If the impact of the water flow is not effectively eliminated, it will easily lead to large fluctuations in the water in the tank and a low sedimentation rate of mud and sand. Utility Model Content

[0004] In view of the above problems, this utility model provides an easy-to-maintain sand-water separator, the purpose of which is to extend the service life of the separator and improve the convenience of separator maintenance.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A sand-water separator that is easy to maintain is provided, comprising: a water tank; an inlet located on the upper side of the water tank; a baffle plate located below the inlet; a U-shaped filter screen located inside the water tank, between the inlet and the baffle plate; a screw conveyor, one end of which is submerged in water below the baffle plate, and the other end extending upwards at an angle to a fixed length; a U-shaped liner plate located between the U-shaped groove of the screw conveyor and the screw blades of the screw conveyor; a plurality of mounting nuts fixedly installed on the inner wall of the U-shaped groove; a plurality of mounting blocks fixedly installed on the U-shaped liner plate; a plurality of mounting screws capable of passing through the mounting blocks and connecting to the mounting nuts via threads; and an overflow port located on the side wall of the water tank.

[0006] Furthermore, two oblong holes are symmetrically provided on one mounting block for mounting screws to pass through.

[0007] Furthermore, the separator also includes a press-fit screw and a press-fit nut connected by threads, the press-fit nut being fixedly mounted on the U-shaped groove, and one end of the press-fit screw being used to press against the U-shaped liner.

[0008] Furthermore, the separator also includes a guide block through which the press-fit nut passes, fixedly installed on the inner wall of the U-shaped groove, and positioned between the press-fit nut and the U-shaped liner.

[0009] Furthermore, the separator also includes a positioning hole, which is conical and located within the mounting block, for inserting one end of the press-fit screw.

[0010] Furthermore, the separator also includes a weir, which is located inside the water tank and connected to the overflow outlet, with a toothed overflow plate on one side of the weir.

[0011] The beneficial effects of this utility model are as follows: By setting a filter screen, the impact force of the water flow can be released, and the sand-water mixture can enter the water tank evenly, preventing excessive fluctuations in the water flow within the tank, which is conducive to the deposition of silt and improves the sedimentation efficiency. Furthermore, the filter screen can also intercept slag larger than the diameter of the screen holes, which can be manually cleaned later, preventing excessively large slag from entering the water tank and causing the separator to become unusable, thus effectively ensuring the normal operation of the separator.

[0012] In this invention, a U-shaped liner is detachably provided between the bottom of the U-shaped groove and the spiral blade; this facilitates the replacement of the U-shaped liner, avoids direct contact between the spiral blade and the bottom of the U-shaped groove, and prevents the bottom of the U-shaped groove from being worn through. The U-shaped liner can be replaced flexibly according to its actual wear condition, effectively extending the service life of the separator and facilitating the maintenance of the separator. Attached Figure Description

[0013] Figure 1 This is a front view of the internal structure of a sand-water separator provided in an embodiment of this application.

[0014] Figure 2 This is a three-dimensional schematic diagram of the internal structure of the sand-water separator provided in the embodiments of this application.

[0015] Figure 3 This is a schematic diagram of the installation of the U-shaped liner provided in the embodiments of this application.

[0016] Among them, 1. Water tank; 11. Inlet; 12. Overflow port; 2. Baffle plate; 3. Screw conveyor; 31. U-shaped liner; 32. Spiral blade; 33. U-shaped trough; 41. Mounting nut; 42. Mounting block; 43. Waist-shaped hole; 44. Press screw; 45. Press nut; 46. Guide block; 5. Filter screen; 6. Weir; 61. Overflow plate; 7. Motor; 8. Slag discharge port. Detailed Implementation

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] Reference Figure 1 and Figure 2 As shown, this utility model provides an easy-to-maintain sand-water separator, comprising: a water tank 1; an inlet 11 disposed on the upper side of the water tank 1; a partition 2 disposed below the inlet 11; a U-shaped filter screen 5 disposed inside the water tank 1, between the inlet 11 and the partition 2; a screw conveyor 3, one end of which is submerged in water below the partition 2, and the other end extending upwards at an angle to the horizontal plane for a fixed length; a U-shaped liner 31 disposed between the U-shaped groove 33 of the screw conveyor 3 and the screw blades 32 of the screw conveyor 3; a plurality of mounting nuts 41 fixedly installed on the inner wall of the U-shaped groove 33; a plurality of mounting blocks 42 fixedly disposed on the U-shaped liner 31; a plurality of mounting screws capable of passing through the mounting blocks 42 and connecting the mounting nuts 41 by thread; and an overflow port 12 opened on the side wall of the water tank 1.

[0019] In practical use, during sewage treatment, the sand-water mixture discharged from the sedimentation tank impacts the filter screen 5 through the inlet 11. The sand-water mixture falls into the water tank 1 through the sieve holes on the filter screen 5. Through the static treatment of the water flow by the baffle 2, the silt settles to the bottom of the U-shaped trough 33 under the action of gravity. Simultaneously, the motor 7 drives the spiral blade 32 to rotate, which drives the silt to rise until it reaches the sludge discharge port 8 for discharge. The settled water is discharged through the overflow port 12 and the drain pipe.

[0020] In this invention, by setting up a filter screen 5, the impact force of the water flow can be released, and the sand-water mixture can be evenly introduced into the water tank 1, preventing excessive fluctuations in the water flow within the water tank 1, which is conducive to the deposition of silt and improves the sedimentation efficiency. Furthermore, the filter screen 5 can also intercept slag larger than the diameter of the sieve holes, which can be manually cleaned later, preventing excessively large slag from entering the water tank 1 and causing the separator to become unusable, thus effectively ensuring the normal operation of the separator.

[0021] Reference Figure 3 As shown, in this utility model, the U-shaped liner 31 can be installed by passing the mounting screw (not shown in the figure) through the mounting block 42 and tightening it on the mounting nut 41. The U-shaped liner 31 is detachably provided between the bottom of the U-shaped groove 33 and the spiral blade 32. This facilitates the replacement of the U-shaped liner 31, avoids the spiral blade 32 from directly contacting the bottom of the U-shaped groove 33, and thus avoids the bottom of the U-shaped groove 33 from being worn through. It can be flexibly replaced according to the actual wear of the U-shaped liner 31, effectively extending the service life of the separator and facilitating the maintenance of the separator.

[0022] Preferably, two oblong holes 43 are symmetrically provided on a mounting block 42 for mounting screws to pass through, which can flexibly adjust the installation height of the U-shaped liner 31 and improve the installation stability of the U-shaped liner 31.

[0023] It is worth mentioning that, in order to improve the installation stability of the U-shaped liner 31, the number of mounting blocks 42 on a U-shaped liner 31 can be flexibly changed.

[0024] In this embodiment, the separator further includes a press-fit screw 44 and a press-fit nut 45 connected by threads. The press-fit nut 45 is fixedly disposed on the U-shaped groove 33, and one end of the press-fit screw 44 is used to press against the U-shaped liner 31.

[0025] Preferably, the separator further includes: a guide block 46 through which the press-fit nut 45 passes and is fixedly installed on the inner wall of the U-shaped groove 33, located between the press-fit nut 45 and the U-shaped liner 31; the separator further includes: a positioning hole, which is conical and opened in the mounting block 42 for one end of the press-fit screw 44 to be inserted.

[0026] Specifically, after placing the U-shaped liner 31 into the U-shaped groove 33, the worker installs the press-fit screw 44 onto the press-fit nut 45 via a threaded connection. The worker then tightens the press-fit screw 44, and one end of the press-fit screw 44 passes through the guide block 46 and is inserted into the positioning hole, thereby positioning and installing the U-shaped liner 31 into the U-shaped groove 33. The worker then aligns the waist-shaped hole 43 with the mounting nut 41, and finally tightens the mounting screw onto the mounting nut 41 to complete the installation of the U-shaped liner 31.

[0027] Preferably, the separator further includes: a weir 6, which is disposed in the water tank 1 and connected to the overflow port 12. A toothed overflow plate 61 is provided on one side of the weir 6. The water that has completed sedimentation passes through the toothed overflow plate 61 and enters the weir 6, and is discharged out through the overflow port 12.

[0028] It is worth mentioning that in this embodiment, the existing screw conveyor 3 on the market can be selected, and the screw blade 32 is the existing shaftless screw blade 32. One end of the shaftless screw blade 32 is connected to the output shaft of the motor 7 through a flange.

[0029] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the machine equivalents of the claims of the present invention, the present invention also intends to include these modifications and modifications.

Claims

1. An easy-to-maintain sand-water separator, characterized in that, include: Water tank (1); The water inlet (11) is located on the upper side of the water tank (1); A baffle (2) is provided below the inlet (11); A U-shaped filter screen (5) is installed inside the water tank (1), between the water inlet (11) and the baffle (2); The screw conveyor (3) has one end submerged in water below the partition (2), and the other end extends upwards at an angle to the horizontal plane for a fixed length. U-shaped liner (31) is disposed between the U-shaped groove (33) of the screw conveyor (3) and the screw blade (32) of the screw conveyor (3); Several mounting nuts (41) are fixedly installed on the inner wall of the U-shaped groove (33); Several mounting blocks (42) are fixedly mounted on the U-shaped liner (31); Several mounting screws can pass through the mounting block (42) and be threadedly connected to the mounting nut (41); An overflow outlet (12) is located on the side wall of the water tank (1).

2. The easy-to-maintain sand-water separator according to claim 1, characterized in that, Two oblong holes (43) are symmetrically provided on the left and right sides of a mounting block (42) for mounting screws to pass through.

3. The easy-to-maintain sand-water separator according to claim 1, characterized in that, Also includes: The press-fit screw (44) and press-fit nut (45) are connected by threads. The press-fit nut (45) is fixedly set on the U-shaped groove (33). One end of the press-fit screw (44) is used to press against the U-shaped liner (31).

4. The easy-to-maintain sand-water separator according to claim 3, characterized in that, Also includes: The guide block (46) is for the press-fit nut (45) to pass through and is fixedly installed on the inner wall of the U-shaped groove (33), between the press-fit nut (45) and the U-shaped liner (31).

5. The easy-to-maintain sand-water separator according to claim 3, characterized in that, Also includes: The positioning hole is conical and is located inside the mounting block (42) for inserting one end of the press-fit screw (44).

6. The easy-to-maintain sand-water separator according to claim 1, characterized in that, Also includes: A weir (6) is installed inside the water tank (1) and connected to the overflow port (12). A toothed overflow plate (61) is installed on one side of the weir (6).

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