High-precision multilayer hydraulic cyclone desanding device

Abstract

The invention relates to a high-precision multilayer hydraulic cyclone desanding device which comprises a concrete pool body and a water inlet, the water inlet is located in the concrete pool body, one end of the water inlet is fixedly connected with a water distribution port, the end, away from the water inlet, of the water distribution port is fixedly connected with stacked discs, and the stacked discs are connected through stacked disc fixing pieces. The side, far away from the stacked disc, of the stacked disc fixing piece is connected with a mounting frame, the top end of the mounting frame is fixedly connected with a mounting support, the mounting frame is provided with a flushing system, and automatic flushing is achieved: through real-time monitoring, operation faults can be found in time, and the flushing position can be flexibly adjusted, so that the stability and the treatment effect of the flushing system are improved; the check valve is arranged at the front end of the flushing flat nozzle to prevent the flushing flat nozzle and the flushing branch pipe from being blocked, so that the maintenance cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of sand removal devices, and in particular to a high-precision multi-layer hydrocyclone sand removal device. Background Art

[0002] In the process of sewage and wastewater treatment, grit chambers are used as one of the pretreatment measures, mainly to remove sand and gravel from sewage to prevent wear and damage to subsequent treatment facilities. Common types of grit chambers include mechanical cyclone grit chambers, aerated grit chambers, and horizontal grit chambers. These types of grit chambers have limited removal accuracy and particle size for grit. Most of them can remove grit with a particle size of 200μm and above, a specific gravity of 2.65, and a removal accuracy of about 75-85%. However, in actual sewage treatment projects, the proportion of grit smaller than 200μm can often reach more than 50%. This part of grit enters the subsequent sewage treatment facilities, which has a great impact on the wear of subsequent treatment facilities, deposition in the biochemical pool, resulting in a reduction in the volume of the biochemical pool, and affecting the cohesion of activated sludge.

[0003] In the existing sand removal device of the grit chamber, in order to improve the removal efficiency and accuracy of sand and gravel, a multi-layer stacked disc is set up by utilizing the principle of shallow sedimentation and vortex sweeping. The water distribution of the stacked disc is ensured to be uniform by setting the water inlet and water distribution port. The water inlet of each layer of the stacked disc is a tangential water inlet mode. At the same time, the water level difference is used to drive the water to swirl in the stacked disc. However, in actual use, it is found that during the operation of the high-efficiency hydraulic cyclone sand removal tank, the mud and sand in the equipment slide downward along the multi-layer stacked disc spiral and finally fall into the sand hopper. The nozzle of the existing multi-layer hydraulic cyclone sand removal device is set at the bottom of the multi-layer stacked disc, and flushing is carried out toward the upper part of the stacked disc, that is, the path of the mud and sand is opposite to the flushing path, so the flushing effect is poor, and the fan-shaped spray head is easy to be blocked. When the flushing system stops, negative pressure may be generated, and the sewage mud and sand in the grit chamber may enter the water spray pipe through the nozzle. Summary of the invention

[0004] In view of the above problems existing in the prior art, the main purpose of the present invention is to provide a high-precision multi-layer hydrocyclone sand removal device.

[0005] The technical solution of the present invention is as follows: a high-precision multi-layer hydrocyclone sand removal device, comprising a concrete tank body and a water inlet, wherein the water inlet is located inside the concrete tank body, one end of the water inlet is fixedly connected to a water diversion port, and one end of the water diversion port away from the water inlet is fixedly connected to a stacked disk, wherein the stacked disks are connected by stacked disk fixing members, wherein the stacked disk fixing members are connected to a mounting frame at a side away from the stacked disks, wherein the top end of the mounting frame is fixedly connected to a mounting bracket, and a flushing system is provided on the mounting frame;

[0006] The flushing system includes a flushing main pipe and a control box. One end of the flushing main pipe is connected to external high-pressure flushing water, and the other end is fixedly connected to a plurality of flushing branch pipes. The flushing branch pipes are sequentially provided with a solenoid valve, a pressure sensor, a water spray pipe, a check valve and a flushing flat nozzle. The water spray pipe, the check valve and the flushing flat nozzle constitute a water spray pipeline. The flushing branch pipe is provided with a plurality of water spray pipelines. The flushing flat nozzle is arranged at the top of the stacked plate. Liquid level differential meters are provided on the water inlet and outlet channels of the concrete pool body.

[0007] As a preferred embodiment, the number of the water spray pipelines is consistent with the number of stacked discs, and the water outlet direction of the flushing flat nozzle is toward the direction of water flow and mud and sand running in the stacked discs.

[0008] As a preferred implementation, the flushing branch pipe is a stainless steel pipe, and the flushing branch pipe also serves as a supporting vertical pipe of the installation frame.

[0009] As a preferred implementation manner, an exhaust pipe and a square hole are provided on the water inlet, a sealing gasket is provided on the square hole, and a cover plate is provided above the sealing gasket.

[0010] As a preferred embodiment, the water diversion port comprises a water diversion port water inlet fixing plate, a plurality of water diversion channels are arranged on one side of the water diversion port water inlet fixing plate, and a water diversion port water outlet fixing plate is arranged on the side of the water diversion channel away from the water diversion port water inlet fixing plate.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. Realize relatively uniform water distribution of multi-layer stacked discs: The sand removal device is provided with a water inlet and a water outlet. The water inlet is connected to the water outlet, and the water outlet is connected to the water inlet of the multi-layer stacked discs. The top elevation of the water inlet is higher than the upper edge of the top stacked disc by a certain height to ensure that the water inlet level is higher than the water outlet level of the stacked disc, so as to realize the operation of the hydraulic drive device;

[0013] 2. Automatic flushing: Through real-time monitoring, the present invention can timely discover operating faults and flexibly adjust the flushing position, thereby improving the stability and treatment effect of the flushing system;

[0014] 3. A check valve is set at the front end of the flushing nozzle to prevent the flushing nozzle and flushing branch pipe from being blocked, so the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention provides a schematic diagram of the overall structure of a high-precision multi-layer hydrocyclone sand removal device;

[0016] Figure 2 The present invention provides a schematic diagram of the stacked disc structure of a high-precision multi-layer hydrocyclone sand removal device;

[0017] Figure 3 The present invention provides a schematic diagram of the piping distribution of the flushing system of a high-precision multi-layer hydrocyclone sand removal device;

[0018] Figure 4 The present invention provides a schematic diagram of the water inlet structure of a high-precision multi-layer hydrocyclone sand removal device;

[0019] Figure 5 The present invention provides a schematic diagram of the water outlet structure of a high-precision multi-layer hydrocyclone sand removal device;

[0020] Figure 6 The present invention provides a schematic diagram of the stacked disc structure of a high-precision multi-layer hydrocyclone sand removal device.

[0021] Legend: 1. Water inlet; 2. Water diversion port; 21. Water diversion port water inlet fixing plate; 22. Water diversion channel; 23. Water diversion port water outlet fixing plate; 3. Stacking plate; 4. Mounting bracket; 5. Mounting frame; 6. Stacking plate fixing parts; 7. Flushing system; 71. Flushing main pipe; 72. Flushing branch pipe; 73. Solenoid valve; 74. Pressure sensor; 75. Spray pipe; 76. Check valve; 77. Flushing flat nozzle; 78. Control box; 79. Liquid level difference meter; 8. Concrete tank body. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 invention 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 present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Example

[0027] A high-precision multi-layer hydrocyclone sand removal device comprises a concrete tank body 8 and a water inlet 1, wherein the water inlet 1 is located inside the concrete tank body 8, one end of the water inlet 1 is fixedly connected to the water diversion port 2, and the end of the water diversion port 2 away from the water inlet 1 is fixedly connected to the stacked discs 3, and the stacked discs 3 are connected by stacked disc fixing members 6, and the number of stacked discs 3 is not less than 3, and the plurality of stacked discs 3 are sequentially arranged up and down along the longitudinal direction, and each upper and lower layer of stacked discs is connected and fixed by one end of the stacked disc fixing member 6, and the stacked disc fixing members 6 are not less than 4 and are evenly distributed around the stacked discs 3, and the stacked disc fixing member 6 is connected to the mounting frame 5 away from the side of the stacked disc 3, and the top of the mounting frame 5 is fixedly connected to the mounting bracket 4, and the mounting bracket 4 is connected and fixed to the concrete tank body 8 on all sides, and the mounting frame A flushing system 7 is provided on the frame 5, and the mounting frame 5 is a partial component of the flushing system 7; the stacking disc 3 in the present application is composed of a stacking disc water inlet, a stacking disc body, a fixing column, and a bolt. The outer plate of the stacking disc water inlet is tangentially connected with the outer plate of the stacking disc, and the inner plate of the stacking disc water inlet is tangentially connected with the inner plate of the stacking disc. An opening is set on the outer plate of the stacking disc between the two connection points, so that the incoming water can flow smoothly into the stacking disc body through the stacking disc water inlet, and the cross section of the flow channel does not change, which maximizes the stability of the flow state, is conducive to ensuring that the stacking disc forms a stable hydraulic cyclone, and ensures the removal efficiency and removal accuracy of the gravel. The stacking disc fixing member 6, the mounting frame 5 and the mounting bracket 4 in the present invention have been applied for related patents;

[0028] The flushing system 7 includes a flushing main pipe 71 and a control box 78. One end of the flushing main pipe 71 is connected to the external high-pressure flushing water, and the other end is fixedly connected to a plurality of flushing branch pipes 72. The flushing branch pipe 72 is provided with a solenoid valve 73, a pressure sensor 74, a water spray pipe 75, a check valve 76 and a flushing flat nozzle 77 in sequence. The water spray pipe 75, the check valve 76 and the flushing flat nozzle 77 constitute a water spray pipeline. The flushing branch pipe 72 is provided with a plurality of water spray pipelines. The flushing flat nozzle 77 is arranged at the top of the stacking plate 3. The opening quantity and order of the flushing branch pipe 72 are controlled by the solenoid valve 73, and the flushing method is more flexible. The pressure value is fed back in real time by the pressure sensor 74. When the pressure is 0MPa, the flushing system 7 is currently in a stopped state. When the pressure is between 0-0.4MPa, the flushing system 7 is It is currently in the operating state. When the pressure is ≥0.5MPa, the flushing system 7 is currently in a blocked state. The control system can prompt an alarm and needs to be unblocked. A liquid level difference meter 79 is provided on the inlet and outlet channels of the concrete tank body 8 to measure the operating liquid level difference of the high-precision multi-layer hydraulic cyclone sand removal device. When the liquid level difference is greater than or equal to the set value, it is considered that the multi-layer stacked discs 3 are silted up, and the flushing system 7 can automatically run the flushing program; the automatic flushing program is to open a group of solenoid valves 73 on the flushing branch pipe 72, and the number of solenoid valves 73 in each group is not less than 1, and connect high-pressure flushing water to realize automatic flushing. After flushing for a certain period of time, open the next group of unopened solenoid valves 73, close the first group of solenoid valves 73, repeat the flushing program, and cycle in sequence until all flushing is completed.

[0029] The number of water spray pipes is consistent with the number of stacking discs 3. The water outlet direction of the flushing flat nozzle 77 is toward the direction of water flow and mud and sand running in the stacking discs, thereby enhancing the flushing effect. The flushing branch pipe 72 is a stainless steel pipe, and the flushing branch pipe 72 also serves as a supporting vertical pipe for the installation frame 5, thereby achieving multiple uses of one pipe and reducing the cost of equipment installation.

[0030] An exhaust pipe and a square hole are provided on the water inlet 1, a sealing gasket is provided on the square hole, and a cover plate is provided above the sealing gasket. When the inlet flow is unstable and there is turbulence causing air to enter the water inlet, the exhaust pipe can be discharged through the exhaust pipe to ensure that the inlet flow rate and flow state are not affected. When the inlet flow rate exceeds the processing capacity of a high-precision multi-layer hydrocyclone sand removal device, the sealing gasket and the cover plate can be removed to achieve overflow;

[0031] The water diversion port 2 comprises a water diversion port water inlet fixing plate 21, a plurality of water diversion channels 22 are arranged on one side of the water diversion port water inlet fixing plate 21, the number of the water diversion channels 22 is consistent with the number of stacked plates, a water diversion port water outlet fixing plate 23 is arranged on the side of the water diversion channel 22 away from the water diversion port water inlet fixing plate 21, and the upper edge of each water diversion channel 22 is kept inclined upward and consistent with the water inlet path, so as to reduce the resistance loss of the water inlet and maintain a smooth flow state, without generating eddy currents and turbulence, and the water distribution is more uniform.

[0032] Working principle: When flushing, the flushing point, flushing intensity, flushing frequency and flushing duration of the stacked disc 3 are determined by the number and order of opening of the solenoid valve 73. The flushing point is achieved by the number and position of the flushing branch pipes 72 opened, and the flushing intensity can be achieved by the number of flushing branch pipes 72 opened. The flushing frequency and flushing duration can be achieved by the automatic control program setting of the control box 78, which is more adaptable to the actual flushing requirements; the pressure value is fed back in real time by the pressure sensor 74. When the pressure is 0MPa, the flushing system 7 is currently in a stopped state; when the pressure is between 0-0.4MPa, the flushing system 7 is currently in a running state; when the pressure is ≥0.5MPa, the flushing system 7 is currently in a blocked state, and the control system can prompt an alarm; the pressure value can be adjusted according to the actual flushing pressure;

[0033] When the water outlet direction of the flushing flat nozzle 77 is toward the direction of the water flow of the stacked disc and the running direction of the mud and sand, the washed mud and sand spirally fall along the surface of the stacked disc 3 to the sand hopper, which can achieve three beneficial effects. First, the flushing effect is enhanced. Second, it does not affect the original flow state in the stacked disc 3, and thus does not affect the sand and gravel removal accuracy and removal rate of the high-precision multi-layer hydraulic cyclone sand removal device. Third, the flow state in the flushing branch pipe 72 and the water spray pipe 75 is smooth, the resistance loss is small, and the flushing intensity is guaranteed.

[0034] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-precision multi-layer hydrocyclone sand removal device, comprising a concrete tank body (8) and a water inlet (1), characterized in that: The water inlet (1) is located inside the concrete tank body (8); one end of the water inlet (1) is fixedly connected to the water diversion port (2); one end of the water diversion port (2) away from the water inlet (1) is fixedly connected to the stacked disc (3); the stacked discs (3) are connected to each other via stacked disc fixing members (6); the stacked disc fixing member (6) is connected to a mounting frame (5) on a side away from the stacked disc (3); the top end of the mounting frame (5) is fixedly connected to a mounting bracket (4); and a flushing system (7) is provided on the mounting frame (5); The flushing system (7) comprises a flushing main pipe (71) and a control box (78). One end of the flushing main pipe (71) is connected to external high-pressure flushing water, and the other end is fixedly connected to a plurality of flushing branch pipes (72). The flushing branch pipes (72) are provided with a solenoid valve (73), a pressure sensor (74), a water spray pipe (75), a check valve (76) and a flushing flat nozzle (77) in sequence. The water spray pipe (75), the check valve (76) and the flushing flat nozzle (77) constitute a water spray pipeline. The flushing branch pipe (72) is provided with a plurality of water spray pipelines. The flushing flat nozzle (77) is arranged at the top of the stacked plate (3). A liquid level differential meter (79) is provided on the water inlet and outlet channels of the concrete tank body (8).

2. A high-precision multi-layer hydrocyclone sand removal device according to claim 1, characterized in that: The number of the water spray pipelines is consistent with the number of the stacked discs (3), and the water outlet direction of the flushing flat nozzle (77) is toward the direction of the water flow and mud and sand running in the stacked discs.

3. A high-precision multi-layer hydrocyclone sand removal device according to claim 1, characterized in that: The flushing branch pipe (72) is a stainless steel pipe and also serves as a vertical support pipe for the installation frame (5).

4. The high-precision multi-layer hydrocyclone sand removal device according to claim 1 is characterized in that: The water inlet (1) is provided with an exhaust pipe and a square hole, the square hole is provided with a sealing gasket, and a cover plate is provided above the sealing gasket.

5. The high-precision multi-layer hydrocyclone sand removal device according to claim 1 is characterized in that: The water diversion port (2) comprises a water diversion port water inlet fixing plate (21), a plurality of water diversion channels (22) are provided on one side of the water diversion port water inlet fixing plate (21), and a water diversion port water outlet fixing plate (23) is provided on the side of the water diversion channel (22) away from the water diversion port water inlet fixing plate (21).

Images