A sand washing machine

Abstract

The present application relates to a sand washer, in which a drainage chamber, a separation chamber, and a sand discharge chamber are sequentially arranged in the cylinder from top to bottom, a conical separation partition is arranged between the drainage chamber and the separation chamber, a sand discharge partition is arranged between the separation chamber and the sand discharge chamber, and a through hole for fluid to pass through is opened in the center of the separation partition and the sand discharge partition, a central cylinder is arranged under the separation partition, an overflow pipe is connected to the drainage chamber, a water outlet pipe is connected to the separation chamber, and a sand discharge pipe is connected to the sand discharge chamber; a regulating mechanism for regulating and controlling the flow rate, residence time and pressure in the chamber is arranged in the through hole. Advantages: full hydraulic structure, no agitator, no moving parts, no aeration facilities, high-efficiency sand and water separation is achieved, and the preparation cost and maintenance cost of the structure are low.

Description

Technical Field

[0001] The present application belongs to the technical field of water-sand separation, and in particular, relates to a sand washer. Background Art

[0002] The main function of the sand-water separator is to be used in the grit chamber of a sewage treatment plant to separate sand-containing water into pure water and sand and gravel, thereby achieving water purification and effective utilization of water resources.

[0003] The sand-water separator achieves effective treatment of sand-containing water through different working principles and structures. It uses centrifugal force to separate water and sand, thereby achieving the purpose of purifying water quality. However, this structure often relies on an agitator, which requires a power device to drive it, resulting in a more complex structure, and high manufacturing and maintenance costs. Moreover, the existing structures are all fixed structures, and their fluid flow is not adjustable. It is not possible to adjust the corresponding control flow, residence time and cavity pressure according to the water flow to improve the sand-water separation efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sand washer to solve the deficiencies in the prior art that a stirrer and a power device are needed and the fluid flow cannot be adjusted.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A sand washer comprises a cylinder, wherein a drainage chamber, a separation chamber and a sand discharge chamber are arranged in sequence from top to bottom in the cylinder, a conical separation baffle is arranged between the drainage chamber and the separation chamber, the separation baffle is fixed in the cylinder, a sand discharge baffle is arranged between the separation chamber and the sand discharge chamber, the sand discharge baffle is fixed in the cylinder, through holes for fluid to pass through are opened in the centers of the separation baffle and the sand discharge baffle, a central cylinder is arranged below the separation baffle, the central cylinder is connected with the through hole of corresponding size, an overflow pipe, a water outlet pipe and a sand discharge pipe tangent to the cylinder are connected to the cylinder, the overflow pipe is connected with the drainage chamber, the water outlet pipe is connected with the separation chamber, the sand discharge pipe is connected with the sand discharge chamber, a three-chamber separation arrangement is adopted, the separation chamber is separated from the sand discharge chamber and the drainage chamber by the separation baffle and the sand discharge baffle, and there are no moving parts inside each cavity; an adjusting mechanism for adjusting and controlling the flow rate, the residence time and the pressure in the cavity is arranged in the through hole.

[0007] Furthermore, the adjusting mechanism includes a bolt bracket, a nut, an adjusting screw, and a lower cone plate. The bolt bracket is fixed to the upper end of the cylinder, and the nut is installed at the center of the screw bracket. The adjusting screw and the nut are threadedly connected. The lower end of the adjusting screw passes through the through holes of the separation baffle and the sand discharge baffle. The bottom end of the adjusting screw is provided with a lower cone plate. A gap for fluid to pass through is left between the lower cone plate and the sand discharge baffle. The adjusting screw is rotated to adjust the size of the gap between the lower cone and the sand discharge baffle, thereby adjusting the fluid flow rate, that is, changing the residence time of the fluid in the corresponding cavity and the pressure in the cylinder.

[0008] Furthermore, it also includes a flange plate provided at the upper end of the cylinder, a detachable top cover is provided in the flange plate, and an outlet for accommodating the top end of the bolt is provided on the top cover, so as to facilitate opening the top cover, inspecting the cylinder, and turning the adjusting screw.

[0009] Furthermore, a hand wheel is provided at the top end of the adjusting screw, and the hand wheel is located in the outlet. The setting of the hand wheel makes it easy to hold and turn the adjusting screw.

[0010] Furthermore, the lower end of the sand discharge chamber is conical, and the sand discharge pipe is connected to the bottom end of the sand discharge chamber, so that sand can be easily deposited and discharged.

[0011] The beneficial effects of the utility model are:

[0012] By arranging drainage chamber, separation chamber, sand discharge chamber, separation baffle, sand discharge baffle and central cylinder in the cylinder body, the full hydraulic structure, no agitator, no moving parts, no aeration facilities, sand and water separation is achieved, and the preparation cost and maintenance cost of the structure are low;

[0013] By turning the adjusting screw to change the size of the gap between the lower vertebral body and the sand discharge partition, the fluid flow rate is adjusted, that is, the residence time of the fluid in the corresponding cavity and the pressure in the cylinder are changed. It can be adjusted according to practical needs to increase the sand-water separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a sand washer of the present application;

[0016] Figure 2 It is a schematic diagram of the internal structure of an embodiment of a sand washer of the present application;

[0017] The reference numerals in the figure are:

[0018] 1. Cylinder, 2. Drainage chamber, 3. Separation chamber, 4. Sand discharge chamber, 5. Separation baffle, 6. Sand discharge baffle, 7. Through hole, 8. Center cylinder, 9. Overflow pipe, 10. Water outlet pipe, 11. Sand discharge pipe, 12. Bolt bracket, 13. Nut, 14. Adjusting screw, 15. Lower cone plate, 16. Gap, 17. Flange plate, 18. Top cover, 19. Outlet, 20. Handwheel. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0022] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] Example

[0024] The present embodiment provides a sand washer, comprising a cylinder 1 and a support column located outside the lower end of the cylinder 1, wherein a drainage chamber 2, a separation chamber 3, and a sand discharge chamber 4 are sequentially arranged in the cylinder 1 from top to bottom, a conical separation partition 5 is arranged between the drainage chamber 2 and the separation chamber 3, the separation partition 5 is fixed in the cylinder 1, a sand discharge partition 6 is arranged between the separation chamber 2 and the sand discharge chamber 4, the sand discharge partition 6 is fixed in the cylinder 1, and a through hole 7 for fluid to pass through is opened in the center of the separation partition 5 and the sand discharge partition 6, a central cylinder 8 is arranged below the separation partition 5, and the central cylinder 8 is connected to the through hole 7 of corresponding size;

[0025] The cylinder 1 is connected with an overflow pipe 9, a water outlet pipe 10, and a sand discharge pipe 11 which are tangential to the cylinder 1. The overflow pipe 9 is connected with the drainage chamber 2, the water outlet pipe 10 is connected with the separation chamber 3, and the sand discharge pipe 11 is connected with the sand discharge chamber 4. A three-chamber separation arrangement is adopted. The drainage chamber 2, the separation chamber 3, and the sand discharge chamber 4 are separated by separation baffles 5 and sand discharge baffles 6. The sand-water mixture enters the separation chamber 3 along the tangential water inlet of the sand washing cylinder 1 through the water outlet pipe 10. At this time, the water flow spirals upward, and a "shear zone" is formed at the interface between the upward and downward water flows. In this area, the flow velocity is zero, and the gravel with a larger specific gravity enters the sand discharge chamber 4 through the through hole 7 of the sand discharge baffle 6. The separated supernatant enters the drainage chamber 2 through the central cylinder 8, and finally flows out from the overflow pipe 9. There are no moving parts inside each cavity.

[0026] A regulating mechanism for adjusting and controlling the flow rate, residence time and pressure in the cavity is arranged in the through hole 7 .

[0027] The adjusting mechanism comprises a bolt bracket 12, a nut 13, an adjusting screw 14 and a lower cone plate 15. The bolt bracket 12 is fixed at the upper end of the cylinder 1, and the nut 13 is installed at the center of the screw bracket 12. The adjusting screw 14 is threadedly connected with the nut 13. The lower end of the adjusting screw 14 passes through the through hole 7 of the separation baffle 5 and the sand discharge baffle 6. The bottom end of the adjusting screw 14 is provided with a lower cone plate 15. A gap 16 for fluid to pass through is left between the lower cone plate 15 and the sand discharge baffle 6. The adjusting screw 14 is rotated to adjust the size of the gap between the lower cone 15 and the sand discharge baffle 6, thereby adjusting the fluid flow rate, that is, changing the residence time of the fluid in the corresponding cavity and the pressure in the cylinder.

[0028] A flange plate 17 is installed at the upper end of the cylinder 1, and a detachable top cover 18 is installed inside the flange plate 17. An outlet 19 for accommodating the top end of the adjusting screw 14 is opened on the top cover 18, so that the top cover 18 can be opened conveniently to inspect the cylinder 1 and turn the adjusting screw 14;

[0029] By rotating the adjusting screw 14 to control the distance between the lower cone plate 15 and the separation chamber and the sand discharge partition 6, the flow rate, the residence time and the pressure in the chamber are controlled to better remove organic matter on the surface of mud and sand and further concentrate the sand-water mixture.

[0030] A hand wheel 20 is provided at the top of the adjusting screw 14 , and the hand wheel 20 is located in the outlet 19 . The setting of the hand wheel 14 makes it easy to hold and turn the adjusting screw 14 .

[0031] The lower end of the sand discharge chamber 4 is conical, and the sand discharge pipe 11 is connected to the bottom end of the sand discharge chamber 4, which is easy to deposit and discharge sand.

[0032] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sand washer, comprising a cylinder, characterized in that: A drainage chamber, a separation chamber, and a sand discharge chamber are sequentially arranged in the cylinder from top to bottom, a conical separation partition is arranged between the drainage chamber and the separation chamber, a sand discharge partition is arranged between the separation chamber and the sand discharge chamber, through holes for fluid to pass through are opened in the centers of the separation partition and the sand discharge partition, a central cylinder is arranged under the separation partition, and the central cylinder is connected with the through hole accordingly, an overflow pipe, a water outlet pipe, and a sand discharge pipe tangent to the cylinder are connected with the cylinder, the overflow pipe is connected with the drainage chamber, the water outlet pipe is connected with the separation chamber, and the sand discharge pipe is connected with the sand discharge chamber; an adjusting mechanism for adjusting and controlling the flow rate, residence time and pressure in the chamber is arranged in the through hole.

2. A sand washer according to claim 1, characterized in that: The adjusting mechanism comprises a bolt bracket, a nut, an adjusting screw and a lower cone plate. The bolt bracket is fixed to the upper end of the cylinder, the nut is installed at the center of the screw bracket, the adjusting screw and the nut are threadedly connected, the lower end of the adjusting screw passes through the through holes of the separation baffle and the sand discharge baffle, the bottom end of the adjusting screw is provided with a lower cone plate, and a gap for fluid to pass through is left between the lower cone plate and the sand discharge baffle.

3. A sand washer according to claim 2, characterized in that: It also includes a flange plate provided at the upper end of the cylinder, a detachable top cover is provided inside the flange plate, and an outlet for accommodating the top end of the bolt is provided on the top cover.

4. A sand washer according to claim 3, characterized in that: A hand wheel is arranged at the top end of the adjusting screw rod, and the hand wheel is located in the outlet.

5. A sand washer according to any one of claims 1 to 4, characterized in that: The lower end of the sand discharge chamber is conical, and the sand discharge pipe is communicated with the bottom end of the sand discharge chamber.

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