First-stage desanding and filtering device of water taking head

Abstract

The invention relates to the technical field of water taking and filtering, in particular to a first-stage desanding and filtering device of a water taking head. The supporting mechanism comprises a water inlet barrel; the flow dividing mechanism comprises a conical guide assembly fixedly arranged at the top of the water inlet barrel and seepage holes formed in the outer walls of the water inlet barrel and the conical guide assembly, a closed sleeve is fixedly arranged at the bottom of the water inlet barrel, and a water inlet pipe is fixedly connected into the closed sleeve. The top conical guide assembly can play a role in shunting mud and sand in water and has better impact resistance, a section of high-position water inlet pipe is arranged in the rectangular porous water inlet barrel, inflowing river water can flow into the bottom water inlet pipe after preliminary deposition and overflow, and as a first-stage filtering device, the sand content in the water can be reduced to a great extent.

Description

Technical Field

[0001] The invention relates to the technical field of water intake filtration, in particular to a first-stage sand removal and filtration device at a water intake head. Background Art

[0002] In the existing water intake process, the original groundwater intake method was changed to surface water intake from the Hailar River. Since the surface water flow fluctuates greatly with the seasons and weather in the Hailar area, during the flood season in summer, the water volume in the river is abundant and the flow increases significantly, causing a large amount of floating debris and large river pebbles in the river to enter the water intake head with the river water. Since the existing water intake head has no effective filtering device (it can only filter large debris through the trash screen), some debris enters the water intake well through the water intake pipeline. Since the water intake well is equipped with four long-axis deep well submersible pumps, debris enters the pump suction port and the inside of the motor, causing frequent damage to the equipment and an increase in the failure rate. During the operation of the equipment, the rotating parts in the pump and the motor bearings have been worn many times. The winter heating period in Hailar District is as long as 7 months, and the outdoor climate is cold. If there is a water supply interruption caused by equipment problems, it will have a great impact on the operation of the unit and the safety of heating.

[0003] The temperature in Hailar area is extremely low in winter, and ice will accumulate on the surface of the upper reaches of the river. Every year in early spring, when the ice in the upper reaches of the river melts, a large number of ice floes float with the river water and are easy to collide with the equipment. Severe collisions will cause deformation or even damage to the equipment.

[0004] Therefore, a first-stage sand removal and filtration device with a simple structure that can effectively separate silt and reduce the sand content in the river water in the sedimentation tank after entering the water intake head and can effectively mitigate the impact and improve the reliability of the plant water replenishment system equipment is needed to meet the existing environmental needs. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above-mentioned prior art, there is a problem that the existing water intake head has no effective filtering device, and debris enters the water intake well through the water intake pipeline, resulting in frequent damage to the equipment and increased failure rate, which has a great impact on the operation of the unit and the safety of heating.

[0007] Therefore, the technical problem to be solved by the present invention is to design a first-stage sand removal and filtering device with a simple structure that can effectively separate mud and sand, reduce the sand content in the river water in the sedimentation tank after entering the water intake head, and improve the reliability of the plant water replenishment system equipment to meet the existing environmental needs.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a first-stage sand removal and filtering device for a water intake head, comprising:

[0009] a support mechanism, including a water inlet bucket;

[0010] The flow dividing mechanism comprises a conical guide assembly fixedly arranged on the top of the water inlet bucket, and seepage holes opened on the outer walls of the water inlet bucket and the conical guide assembly.

[0011] As an improvement of the present invention, the conical guide assembly includes a conical drainage cover, and the conical drainage cover is fixedly located above the water inlet bucket.

[0012] As an improvement of the present invention, the conical guide assembly further includes a drainage diagonal brace, which is fixedly arranged on the side wall of the water inlet bucket and is located below the conical drainage cover.

[0013] As an improvement of the present invention, a maintenance window is hinged on the side wall of the water inlet barrel, and the diameter of the seepage hole is 20-25 mm.

[0014] As an improvement of the present invention, a sedimentation port is fixedly provided on the drainage diagonal support toward the water inlet bucket, and the sedimentation port is in contact with the side wall of the water inlet bucket.

[0015] As an improvement of the present invention, a closed sleeve is fixedly provided at the bottom of the water inlet bucket, and a water inlet pipe is fixedly connected to the inside of the closed sleeve.

[0016] As an improvement of the present invention, the top of the water inlet pipe is higher than the bottom plate of the closed sleeve, the bottom of the water inlet pipe passes through the bottom plate of the closed sleeve, and the top of the water inlet pipe faces the water inlet bucket.

[0017] As an improvement of the present invention, a water retaining cover is fixedly provided above the water inlet pipe, and an overflow cavity is provided between the water inlet pipe and the closed sleeve.

[0018] The beneficial effects of the present invention are as follows: the top conical guide assembly can divert mud and sand in the water and has better impact resistance. A high-position water inlet pipe is provided in the rectangular porous water inlet barrel. The inflowing river water can flow into the bottom water inlet pipe after initial sedimentation and overflow. As a first-stage filtering device, it can greatly reduce the sand content in the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 It is a three-dimensional schematic diagram of the operation scene of the first-stage sand removal and filtering device at the water intake head in the present invention.

[0021] Figure 2 It is a front schematic diagram of the first-stage sand removal and filtering device at the water intake head of the present invention.

[0022] Figure 3 It is a structural layout diagram of the first-stage sand removal and filtering device at the water intake head in the present invention.

[0023] Figure 4 It is a three-dimensional schematic diagram of the front end portion of the first-stage sand removal and filtering device of the water intake head in the present invention.

[0024] Figure 5 It is a cross-sectional view of the internal structure of the control mechanism 100 of the first-stage sand removal and filtering device at the water intake head of the present invention. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] Reference Figure 1 , this embodiment provides a first-stage sand removal and filtering device for a water intake head.

[0028] The existing water intake pollution interception device is simple in design and has poor pollution interception effect, which easily causes floating debris and large river pebbles and other debris to enter. After the addition of this device, it can be used in conjunction with the sand settling tank before entering the water intake well as its first-level filtering device, which can achieve better filtering and pollution interception effects, and to a certain extent reduce the number of floating debris and large river pebbles and other debris entering the sand settling tank, and reduce the probability of wear, jamming and burning of the sand pump in the sand settling tank and the long-axis deep well pump in the water intake well.

[0029] The support mechanism 100 supports the structure of the entire first-stage sand removal and filtration device and belongs to the outer wall structure of the device. The water inlet bucket 101 belongs to the core water guide part of the entire device. The first-stage sand removal and filtration device is directly inserted into the existing river water intake through the water inlet bucket 101. The water flow of the Hailar River is transferred into the water inlet bucket 101 through the diversion mechanism 200 above the water inlet bucket 101 by its own flow rate and pressure, and reaches the subsequent pipeline part through the water inlet bucket 101 for people to take.

[0030] The conical guide assembly 201 is fixedly arranged on the top of the water inlet bucket 101, and a plurality of seepage holes 202 are arranged in an array, penetrating the outer wall of the water inlet bucket 101 and the conical guide assembly 201, so as to separate large particles of sediment. The conical setting of the conical guide assembly 201 can guide the water flow to flow upward, reduce the impact of the water flow on the bottom sediment, and thus reduce the suspended concentration of the sediment. The conical guide assembly 201 can also make the water flow form a vortex effect inside the bucket, further promoting the sedimentation of the sediment.

[0031] Example 2

[0032] Reference Figures 1 to 5 This embodiment is based on the previous embodiment, and is different from the previous embodiment in that:

[0033] The existing water intake pollution interception device is unable to perform preliminary filtration of mud and sand, resulting in a high sand content in the river water entering the sedimentation tank at the back. The conical guide assembly 201 of the device can divert the mud and sand in the water, and a high-position water inlet pipe is provided at the bottom of the water inlet bucket 101. The inflowing river water can flow into the bottom water inlet pipe after preliminary sedimentation and overflow. As a first-stage sand removal and filtration device, it can greatly reduce the sand content in the water.

[0034] The conical guide assembly 201 includes a conical drainage cover 201a at the top, which is also fixed above the water inlet bucket 101. The outer wall of the conical drainage cover 201a is also penetrated by an array of seepage holes 202. The conical guide assembly 201 also includes a drainage brace 201b, which is fixedly arranged below the conical drainage cover 201a and fixedly connected to the side wall of the water inlet bucket 101. The drainage brace 201b has a sedimentation port 201b-1 fixedly opened on one side of the water inlet bucket 101. The sedimentation port 201b-1 is fitted with the side wall of the water inlet bucket 101 and is inclined. No seepage holes 202 are arranged at the bottom of the sedimentation port 201b-1 to ensure the sedimentation of silt.

[0035] The temperature in Hailar is extremely low in winter, and ice will accumulate on the surface of the upstream river. In early spring every year, when the ice in the upstream river melts, a large number of ice floes float with the river water and are easy to collide with this device. Severe collisions may cause deformation or even damage to the device. The conical design of the conical guide assembly 201 can reduce the force area during the collision process, thereby minimizing the impact of ice floe collision damage.

[0036] The conical drainage cover 201a can guide the water to flow upward and form a vortex effect inside the bucket. This vortex effect can make the water flow velocity distribution more uniform, reduce the scouring effect of high-speed water flow on the bottom sediment, and thus reduce the suspended concentration of sediment. Under the action of the diagonal drainage support 201b, the river water entering the bucket needs to flow upward for a distance before entering the bottom water inlet pipe. In this process, the heavier sediment particles gradually settle under the action of gravity, and some of the heavier sediment gathers at the sedimentation port 201b-1, thereby reducing the sediment content entering the bottom water inlet pipe.

[0037] The side wall of the water inlet bucket 101 is hingedly provided with a maintenance window 101a, which can be rotated open to facilitate the staff to directly observe and maintain the internal structure of the water inlet bucket 101. The diameter of the seepage hole 202 is controlled at 20-25mm to better control the diversion of sediment.

[0038] Example 3

[0039] Reference Figures 1 to 5 This embodiment is based on the previous embodiment, and is different from the previous embodiment in that:

[0040] A closed sleeve 301 is fixedly arranged at the bottom of the water inlet bucket 101, and a water inlet pipe 302 is fixedly connected inside the closed sleeve 301. The fixed connection mode of the water inlet pipe 302 and the closed sleeve 301 is high-position installation. The top height of the water inlet pipe 302 should exceed the bottom of the closed sleeve 301. The bottom of the water inlet pipe 302 penetrates the bottom plate of the closed sleeve 301 and is located outside the closed sleeve 301 to connect with the water well. An overflow cavity 303 is arranged between the water inlet pipe 302 and the closed sleeve 301. The overflow cavity 303 is used to temporarily store the preliminary filtered water entering from the water inlet bucket 101.

[0041] A water retaining cover 302a is fixedly provided above the water inlet pipe 302. The water retaining cover 302a is used to prevent the preliminary filtered water from directly passing through the water inlet pipe 302. After being blocked by the water retaining cover 302a, the preliminary filtered water will fall into the overflow cavity 303 between the water inlet pipe 302 and the closed sleeve 301 for temporary storage. As the preliminary filtered water in the overflow cavity 303 increases, some residual sediment will still settle in the overflow cavity 303, and purer filtered water will overflow the overflow cavity 303 to reach the water inlet pipe 302, which reduces the sand content for a second time and improves the water quality entering the water intake well.

[0042] If the water flow rate is reduced due to the blockage of the seepage hole 202 during the water intake process, the first-stage sand removal and filtration device can be pulled out and cleaned in the center of the river, which is convenient for cleaning and maintenance.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A first-stage sand removal and filtering device for a water intake head, characterized in that: include, The supporting mechanism (100) comprises a water inlet bucket (101); The flow dividing mechanism (200) comprises a conical guide assembly (201) fixedly arranged on the top of the water inlet bucket (101), and seepage holes (202) opened on the outer walls of the water inlet bucket (101) and the conical guide assembly (201).

2. The first-stage sand removal and filtering device of the water intake head according to claim 1 is characterized in that: The conical guide assembly (201) comprises a conical drainage cover (201a), and the conical drainage cover (201a) is fixedly located above the water inlet bucket (101).

3. The first-stage sand removal and filtering device of the water intake head according to claim 2 is characterized in that: The conical guide assembly (201) further comprises a drainage diagonal brace (201b), wherein the drainage diagonal brace (201b) is fixedly arranged on the side wall of the water inlet bucket (101), and the drainage diagonal brace (201b) is located below the conical drainage cover (201a).

4. The first-stage sand removal and filtering device of the water intake head according to claim 3 is characterized in that: A maintenance window (101a) is hingedly connected to the side wall of the water inlet bucket (101), and the seepage hole (202) has a diameter of 20-25 mm.

5. The first-stage sand removal and filtering device of the water intake head according to claim 4 is characterized in that: A deposition port (201b-1) is fixedly provided on the side of the drainage diagonal support (201b) facing the water inlet bucket (101), and the deposition port (201b-1) is in contact with the side wall of the water inlet bucket (101).

6. The first-stage sand removal and filtering device of the water intake head according to any one of claims 1 to 5, characterized in that: A closed sleeve (301) is fixedly arranged at the bottom of the water inlet bucket (101), and a water inlet pipe (302) is fixedly connected inside the closed sleeve (301).

7. The first-stage sand removal and filtering device of the water intake head according to claim 6 is characterized in that: The top of the water inlet pipe (302) is higher than the bottom plate of the closed sleeve (301), the bottom of the water inlet pipe (302) passes through the bottom plate of the closed sleeve (301), and the top of the water inlet pipe (302) faces the water inlet bucket (101).

8. The first-stage sand removal and filtering device of the water intake head according to claim 7 is characterized in that: A water retaining cover (302a) is fixedly arranged above the water inlet pipe (302), and an overflow cavity (303) is arranged between the water inlet pipe (302) and the closed sleeve (301).

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