Sewage treatment desilting equipment

Abstract

The utility model discloses sewage treatment desilting equipment which comprises a desilting box, supports are arranged at the two ends of the bottom of the desilting box, a sedimentation cavity is formed in the bottom end of the desilting box, a partition plate is arranged on the inner side of the desilting box, and an opening is formed in the bottom of the partition plate so that the inner space of the desilting box can be communicated. The bottom end of the precipitation cavity is connected with a screw conveying assembly, and the screw conveying assembly is used for discharging settled sand in the precipitation cavity; a dosing tank is arranged at the top end of the sand settling box, an inner cavity of the dosing tank is communicated with the interior of the sand settling box, and an electromagnetic valve is arranged at the discharging end of the dosing tank and used for controlling opening and closing of the dosing tank. The sand settling box is arranged, the partition plate is arranged in the sand settling box, and the space of the sand settling box is communicated along the bottom of the partition plate; in this way, sewage can be buffered by the partition plate after entering the sediment box, then the water level rises slowly, sediment can be precipitated slowly in the water level rising process, the sediment can be precipitated to the bottom of the sediment box, and the sediment can be discharged smoothly through the screw conveying assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely is a sewage treatment desilting equipment. BACKGROUND

[0002] In the sewage treatment process, it is a crucial preliminary step to remove the particles such as silt in the sewage. There are many kinds of silt removal devices for sewage treatment on the market. For example, the utility model patent with the patent publication number CN221471194U discloses a sewage treatment desilting device, which comprises a treatment box, the inner wall of the treatment box is fixedly connected with an inclined filter plate one, the bottom of the inclined filter plate one is fixedly connected with a cylinder top plate, the bottom of the cylinder top plate is fixedly connected with an annular filter plate, the bottom of the annular filter plate is fixedly connected with a cylinder bottom plate, the inner wall of the treatment box is fixedly connected with an inclined filter plate two, and the bottom of the inclined filter plate two is fixedly connected with a connecting pipe. By setting the filter screen pipe, specifically by setting the inclined filter plate one, the annular filter plate and the inclined filter plate two, the silt is filtered and concentrated multiple times, the filter screen pipe can prolong the distance of the sewage flow, and then enough time is provided for the sewage to drop out, the silt mixed with a small amount of water flow is discharged through the silt discharge pipe, and the sewage can be discharged through the sewage outlet. This design can improve the effect of treating the sewage, reduce the content of the sewage in the discharged silt, and improve the utilization rate of resources.

[0003] The sewage treatment desilting device provided by the above patent has a desilting effect, which improves the effect of treating the sewage to a certain extent. However, this desilting device is prone to blockage when discharging silt, and it is not convenient to add medicine to the silted sewage, which is not conducive to efficient desilting treatment of the sewage. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a sewage treatment desilting equipment, which aims at improving the problem that the existing desilting device is prone to blockage when discharging silt, and it is not convenient to add medicine to the silted sewage, which is not conducive to efficient desilting treatment of the sewage.

[0005] The utility model is implemented in this way:

[0006] A sewage treatment desilting equipment, which comprises a desilting box, the bottom of the desilting box is provided with a support at both ends, the bottom end of the desilting box is provided with a sedimentation cavity, and the inner side of the desilting box is provided with a partition plate, the bottom of the partition plate is provided with an opening to make the internal space of the desilting box communicate; the bottom end of the sedimentation cavity is connected with a screw rod conveying assembly, the screw rod conveying assembly is used for discharging the silt in the sedimentation cavity; the top end of the desilting box is provided with a dosing tank, the inner cavity of the dosing tank communicates with the interior of the desilting box, and the discharge end of the dosing tank is provided with an electromagnetic valve for controlling the opening and closing of the dosing tank.

[0007] Preferably, the sand box bottom surface is provided with a connecting table near the front and rear ends, and the sand box bottom end is provided with a sand discharge pipe, and the bottom of the sand discharge pipe is provided with a first flange plate; the bottom of one end of the sand box is provided with a water inlet pipe, and the top of the other end is provided with a drain pipe, and the end of the water inlet pipe and the drain pipe is provided with a second flange plate; the top end of the sand box is provided with a dosing pipe, the dosing pipe is of T-shaped structure, and the top end of the dosing pipe is provided with a connecting pipe, and the end of the connecting pipe is provided with a third flange plate.

[0008] Preferably, the bracket top and bottom are uniformly provided with a plurality of bolt holes, and the bracket top end and the sand box are fixedly connected through bolts.

[0009] Preferably, the screw conveying assembly comprises a conveying cylinder, a conveying screw and a driving motor, one end of the conveying cylinder close to the driving motor is provided with a bearing, the conveying screw is rotatably connected with the bearing, the driving motor is provided with a fixing foot on one end of the conveying cylinder, the fixing foot is connected with the conveying cylinder through bolts, and the output end of the driving motor is connected with the conveying screw, the top end of the side surface of the conveying cylinder is provided with a sand inlet pipe, and the top end of the sand inlet pipe is provided with a fourth flange plate.

[0010] Preferably, the dosing tank top end is provided with a dosing opening, and the dosing opening is threadedly connected with a cover; the dosing tank discharge end is provided with a dosing pipe, the solenoid valve is arranged on the dosing pipe, and the bottom end of the dosing pipe is provided with a fifth flange plate, and the fifth flange plate is connected with the third flange plate through bolts.

[0011] Preferably, it further comprises a flow slowing sleeve and a cover plate, the bottom end of the flow slowing sleeve is connected with the water inlet end of the sand box, and the cover plate is arranged at the top opening of the flow slowing sleeve.

[0012] Preferably, the bottom end of the flow slowing sleeve is provided with an elbow pipe, and the end of the elbow pipe is provided with a sixth flange plate, and the sixth flange plate is connected with the water inlet end of the sand box.

[0013] Preferably, the bottom end of the cover plate is provided with an adapter ring, the top end of the cover plate is provided with an external connecting pipe, and the top end of the external connecting pipe is provided with a seventh flange plate.

[0014] Preferably, it further comprises a filter basket, the inside of the flow slowing sleeve is provided with a limiting ring, the filter basket abuts against the top of the limiting ring, and the bottom of the filter basket is provided with a filter screen, and the two sides of the filter basket are symmetrically provided with pull openings.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. This utility model incorporates a sedimentation tank with internal partitions, the space of which is interconnected along the bottom of the partitions. When wastewater enters the sedimentation tank, it is buffered by the partitions, causing the water level to rise slowly. During this rise, sediment settles gradually, reaching the bottom of the sedimentation tank. A screw conveyor assembly at the bottom of the sedimentation tank smoothly discharges the sediment, preventing blockages and greatly facilitating wastewater sedimentation treatment. A chemical dosing tank is located at the top of the sedimentation tank, connected to it. A solenoid valve at the bottom of the dosing tank allows for the addition of chemicals to the sedimentation tank by controlling its opening and closing. The operation is simple, convenient, and easy to use.

[0017] 2. This utility model features a flow-damping sleeve at the water inlet. This sleeve effectively buffers the dynamics of the water flow, preventing excessive kinetic energy from the water entering the sedimentation tank and thus avoiding the scattering of the settled sand.

[0018] 3. This utility model has a filter basket inside the slow-flow sleeve, which can trap large particles of impurities in the sewage and prevent them from entering the sedimentation tank. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the sedimentation tank of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the bracket of this utility model;

[0022] Figure 4 This is a schematic diagram of the screw conveyor assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the dosing tank of this utility model from a front-end oblique downward view;

[0024] Figure 6 This is a schematic diagram of the structure of the dosing tank of this utility model from a front-end oblique upward view;

[0025] Figure 7 This is a schematic diagram of the structure of the slow-flow sleeve of this utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the filter basket of this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the cover plate of this utility model.

[0028] In the figure: 1, sand trap; 11, sedimentation chamber; 12, connecting table; 13, sand discharge pipe; 14, first flange plate; 15, drain pipe; 16, second flange plate; 17, water inlet pipe; 18, dosing pipe; 19, connecting pipe; 191, third flange plate; 2, support; 21, bolt hole; 3, screw conveying assembly; 31, conveying cylinder; 311, sand inlet pipe; 312, fourth flange plate; 313, bearing; 32, conveying screw; 33, drive motor; 331, fixing foot; 4, dosing tank; 41, dosing opening; 42, cover; 43, dosing pipe; 44, electromagnetic valve; 45, fifth flange plate; 5, slow flow sleeve; 51, limiting ring; 52, elbow; 53, sixth flange plate; 6, cover plate; 61, adapter ring; 62, external connecting pipe; 63, seventh flange plate; 7, filter basket; 71, pull opening; 72, filter screen. DETAILED DESCRIPTION

[0029] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] The following will be further described in combination with the drawings and specific embodiments:

[0031] Embodiment 1

[0032] As shown in Figure 1 and Figure 2 , a sewage treatment sand removal equipment, including sand trap 1, sand trap 1 bottom both ends are equipped with support 2, support 2 is convenient for supporting sand trap 1. The bottom end of the sand trap 1 is provided with a sedimentation chamber 11, which is convenient for sedimentation of sand, so as to facilitate the discharge of sand. And the inner side of the sand trap 1 is provided with a partition, the bottom of the partition is provided with an opening, so that the internal space of the sand trap 1 is communicated; this structure is convenient for buffering the sewage entering the sand trap 1 through the partition. The bottom end of the sedimentation chamber 11 is connected with the screw conveying assembly 3, which is used for discharging the sand in the sedimentation chamber 11. The top end of the sand trap 1 is provided with a dosing tank 4, the inner cavity of which is communicated with the inside of the sand trap 1, which is convenient for adding sewage into the sand trap 1. The discharge end of the dosing tank 4 is provided with an electromagnetic valve 44 for controlling the opening and closing of the dosing tank 4.

[0033] As shown in Figure 2As shown, the bottom of the sand box 1 is provided with a connecting table 12 near the front and rear ends, which is convenient for connecting the sand box 1 with the support 2. The bottom end of the sand box 1 is provided with a sand discharge pipe 13, which is convenient for discharging the sand deposited in the sand box 1. The bottom of the sand discharge pipe 13 is provided with a first flange plate 14; the first flange plate 14 is convenient for connecting the sand box 1 with the screw conveying assembly 3. The bottom of one end of the sand box 1 is provided with a water inlet pipe 17, and the top of the other end is provided with a water discharge pipe 15; the water inlet pipe 17 is convenient for injecting sewage into the sand box 1, and the water discharge pipe 15 is convenient for discharging the deposited sewage. The end of the water inlet pipe 17 and the water discharge pipe 15 is provided with a second flange plate 16; the second flange plate 16 is convenient for connecting with the pipeline conveying sewage. The top end of the sand box 1 is provided with a dosing pipe 18, which is T-shaped structure; the dosing pipe 18 is convenient for injecting reagent into the sand box 1. The top end of the dosing pipe 18 is provided with a connecting pipe 19, and the end of the connecting pipe 19 is provided with a third flange plate 191; the connecting pipe 19 and the third flange plate 191 are convenient for connecting with the dosing tank 4.

[0034] As shown in Figure 3 The top and bottom of the support 2 are uniformly provided with a plurality of bolt holes 21; the top end of the support 2 is connected and fixed with the sand box 1 through bolts, which is convenient for stably supporting the sand box 1.

[0035] As shown in Figure 4 The screw conveying assembly 3 includes a conveying cylinder 31, a conveying screw 32 and a driving motor 33; one end of the conveying cylinder 31 close to the driving motor 33 is provided with a bearing 313, and the conveying screw 32 is rotationally connected with the bearing 313; the bearing 313 is convenient for rotating the conveying screw 32, thereby conveniently discharging the sand in the sand box 1. The driving motor 33 is provided with a fixed foot 331 on one end of the conveying cylinder 31; the fixed foot 331 is connected with the conveying cylinder 31 through bolts, which is convenient for fixing the position of the driving motor 33 through bolts. The output end of the driving motor 33 is connected with the conveying screw 32, which is convenient for rotating the conveying screw 32. The top end of the side surface of the conveying cylinder 31 is provided with a sand inlet pipe 311, and the top end of the sand inlet pipe 311 is provided with a fourth flange plate 312; the sand inlet pipe 311 is convenient for connecting the conveying cylinder 31 with the sand box 1.

[0036] As shown in Figure 5 and Figure 6 The top end of the dosing tank 4 is provided with a dosing opening 41, and a cover 42 is threadedly connected at the dosing opening 41; the dosing opening 41 is convenient for injecting reagent into the dosing tank 4. The discharge end of the dosing tank 4 is provided with a reagent discharge pipe 43, which is convenient for discharging reagent. An electromagnetic valve 44 is arranged on the reagent discharge pipe 43, which is convenient for controlling the opening and closing of the reagent discharge pipe 43. The bottom end of the reagent discharge pipe 43 is provided with a fifth flange plate 45, which is connected with the third flange plate 191 through bolts.

[0037] Example 2

[0038] As shown in Figure 1 and Figure 2 A sewage treatment sand removal device, comprising a sand removal tank 1, both ends of the bottom of the sand removal tank 1 are provided with supports 2, the supports 2 are convenient for supporting the sand removal tank 1. The bottom end of the sand removal tank 1 is provided with a sedimentation cavity 11, which is convenient for sedimentation of sand, thereby facilitating the discharge of sand. And the inside of the sand removal tank 1 is provided with a partition, the bottom of the partition is provided with an opening to make the internal space of the sand removal tank 1 communicate; this structure is convenient for buffering the sewage entering the inside of the sand removal tank 1 through the partition. The bottom end of the sedimentation cavity 11 is connected with a screw conveyor assembly 3, which is used for discharging the sand in the inside of the sedimentation cavity 11; the top end of the sand removal tank 1 is provided with a dosing tank 4, the inner cavity of the dosing tank 4 communicates with the inside of the sand removal tank 1, which is convenient for adding sewage to the inside of the sand removal tank 1. The discharge end of the dosing tank 4 is provided with an electromagnetic valve 44 for controlling the opening and closing of the dosing tank 4.

[0039] As shown in Figure 2 The bottom surface of the sand removal tank 1 is provided with a connecting table 12 near the front and rear ends, which is convenient for connecting the sand removal tank 1 with the support 2. And the bottom end of the sand removal tank 1 is provided with a sand discharge pipe 13, which is convenient for discharging the sand deposited in the inside of the sand removal tank 1. The bottom of the sand discharge pipe 13 is provided with a first flange plate 14; the first flange plate 14 is convenient for connecting the sand removal tank 1 with the screw conveyor assembly 3. The bottom of one end of the sand removal tank 1 is provided with a water inlet pipe 17, and the top of the other end is provided with a water discharge pipe 15; the water inlet pipe 17 is convenient for injecting sewage into the inside of the sand removal tank 1, and the water discharge pipe 15 is convenient for discharging the sedimented sewage. The end of the water inlet pipe 17 and the water discharge pipe 15 is provided with a second flange plate 16; the second flange plate 16 is convenient for connecting with the pipeline for conveying sewage. The top end of the sand removal tank 1 is provided with a dosing pipe 18, which is T-shaped structure; the dosing pipe 18 is convenient for injecting reagent into the inside of the sand removal tank 1. And the top end of the dosing pipe 18 is provided with a connecting pipe 19, the end of the connecting pipe 19 is provided with a third flange plate 191, the connecting pipe 19 and the third flange plate 191 are convenient for connecting with the dosing tank 4.

[0040] As shown in Figure 3 The top and bottom of the support 2 are uniformly provided with a plurality of bolt holes 21, the top end of the support 2 is connected and fixed with the sand removal tank 1 through bolts, which is convenient for the support 2 to stably support the sand removal tank 1.

[0041] As shown in Figure 4As shown, the screw conveying assembly 3 includes a conveying cylinder 31, a conveying screw 32 and a driving motor 33, the conveying cylinder 31 is provided with a bearing 313 at one end close to the driving motor 33, the conveying screw 32 is rotationally connected with the bearing 313, the bearing 313 is convenient for the rotation of the conveying screw 32, thereby facilitating the discharge of sand inside the sand sink 1. The driving motor 33 is provided with a fixing foot 331 at one end close to the conveying cylinder 31, the fixing foot 331 is connected with the conveying cylinder 31 through bolts, the fixing foot 331 is convenient for fixing the position of the driving motor 33 through bolts. And the output end of the driving motor 33 is connected with the conveying screw 32, the driving motor 33 is convenient for driving the rotation of the conveying screw 32. The conveying cylinder 31 is provided with an inlet pipe 311 at the top of the side surface, the top of the inlet pipe 311 is provided with a fourth flange plate 312, the inlet pipe 311 is convenient for connecting the conveying cylinder 31 with the sand sink 1.

[0042] As shown in Figure 5 and Figure 6 , the top of the medicine adding tank 4 is provided with a medicine adding opening 41, and a cover 42 is threadedly connected at the medicine adding opening 41; the medicine adding opening 41 is convenient for injecting the medicine into the medicine adding tank 4. The medicine adding tank 4 is provided with a medicine discharging pipe 43 at the discharge end, the medicine discharging pipe 43 is convenient for discharging the medicine. An electromagnetic valve 44 is arranged on the medicine discharging pipe 43, the electromagnetic valve 44 is convenient for controlling the opening and closing of the medicine discharging pipe 43. And the bottom end of the medicine discharging pipe 43 is provided with a fifth flange plate 45, the fifth flange plate 45 is connected with the third flange plate 191 through bolts.

[0043] As shown in Figure 1 , it further includes a slow flow sleeve 5 and a cover plate 6, the bottom end of the slow flow sleeve 5 is connected with the water inlet end of the sand sink 1, and the cover plate 6 is arranged at the top opening of the slow flow sleeve 5, the slow flow sleeve 5 cooperates with the cover plate 6 to facilitate the slow flow of sewage, so as to avoid the excessive scouring kinetic energy of the sewage to cause the deposited sand to be washed away.

[0044] As shown in Figure 7 , the bottom end of the slow flow sleeve 5 is provided with an elbow pipe 52, the end of the elbow pipe 52 is provided with a sixth flange plate 53, and the sixth flange plate 53 is connected with the water inlet end of the sand sink 1; this structure is convenient for connecting the slow flow sleeve 5 with the sand sink 1.

[0045] As shown in Figure 8 , the bottom end of the cover plate 6 is provided with an adapter ring 61, the adapter ring 61 is convenient for being threadedly connected with the slow flow sleeve 5. The top end of the cover plate 6 is provided with an external connection pipe 62, the top end of the external connection pipe 62 is provided with a seventh flange plate 63, and the external connection pipe 62 and the seventh flange plate 63 are convenient for connecting the cover plate 6 with the sewage conveying pipe.

[0046] Example 3

[0047] As shown in Figure 1 and Figure 2As shown, a sewage treatment sand setting equipment, including sand setting tank 1, sand setting tank 1 bottom both ends are provided with support 2, support 2 is convenient for sand setting tank 1 is supported. Sand setting tank 1 bottom end is provided with sedimentation chamber 11, the sedimentation chamber 11 is convenient for sedimentation sand, so as to facilitate the discharge of sand. And sand setting tank 1 inside is provided with a partition, the partition bottom is provided with an opening so that the sand setting tank 1 internal space is communicated;This structure is convenient for entering the sand setting tank 1 inside sewage through the partition is buffered. Sedimentation chamber 11 bottom end is connected with screw conveyor assembly 3, screw conveyor assembly 3 is used for discharging the sand setting in the sedimentation chamber 11 inside;Sand setting tank 1 top end is provided with dosing tank 4, dosing tank 4 inner cavity is communicated with the sand setting tank 1 inside, it is convenient to add sewage to the sand setting tank 1 inside. Dosing tank 4 discharge end is provided with electromagnetic valve 44, for controlling the opening and closing of dosing tank 4.

[0048] As shown in the figure, Figure 2 Sand setting tank 1 bottom surface near the position of the front and rear ends is provided with connecting table 12, connecting table 12 is convenient for sand setting tank 1 and support 2 is connected. And sand setting tank 1 bottom end is provided with sand discharge pipe 13, sand discharge pipe 13 is convenient for discharging the sand setting in the sand setting tank 1 inside. Sand discharge pipe 13 bottom is provided with first flange plate 14;First flange plate 14 is convenient for sand setting tank 1 and screw conveyor assembly 3 is connected. Sand setting tank 1 one end bottom is provided with water inlet pipe 17, the other end top is provided with drain pipe 15, water inlet pipe 17 is convenient for injecting sewage into the sand setting tank 1 inside, drain pipe 15 is convenient for discharging the sewage after sedimentation. Water inlet pipe 17 and drain pipe 15 end are provided with second flange plate 16;Second flange plate 16 is convenient for connecting with the pipeline conveying sewage. Sand setting tank 1 top end is provided with dosing pipe 18, dosing pipe 18 is T-shaped structure, dosing pipe 18 is convenient for injecting reagent into the sand setting tank 1 inside. And dosing pipe 18 top end is provided with connecting pipe 19, connecting pipe 19 end is provided with third flange plate 191, connecting pipe 19 and third flange plate 191 are convenient for connecting with dosing tank 4.

[0049] As shown in the figure, Figure 3 Support 2 top and bottom are uniformly provided with a plurality of bolt holes 21, support 2 top end and sand setting tank 1 are connected and fixed by bolts, which is convenient for support 2 to stably support sand setting tank 1.

[0050] As shown in the figure, Figure 4As shown, the screw conveying assembly 3 includes a conveying cylinder 31, a conveying screw 32 and a driving motor 33, the conveying cylinder 31 is provided with a bearing 313 at one end close to the driving motor 33, the conveying screw 32 is rotationally connected with the bearing 313, the bearing 313 is convenient for the rotation of the conveying screw 32, thereby facilitating the discharge of sand inside the sand sink 1. The driving motor 33 is provided with a fixed foot 331 at one end close to the conveying cylinder 31, the fixed foot 331 is connected with the conveying cylinder 31 through bolts, the fixed foot 331 is convenient for fixing the position of the driving motor 33 through bolts. And the output end of the driving motor 33 is connected with the conveying screw 32, the driving motor 33 is convenient for driving the rotation of the conveying screw 32. The conveying cylinder 31 is provided with a sand inlet pipe 311 at the top of the side surface, the top of the sand inlet pipe 311 is provided with a fourth flange plate 312, the sand inlet pipe 311 is convenient for connecting the conveying cylinder 31 with the sand sink 1.

[0051] As shown in Figure 5 and Figure 6 shown, the top of the dosing tank 4 is provided with a dosing opening 41, the dosing opening 41 is threadedly connected with a cover 42; the dosing opening 41 is convenient for injecting medicament into the inside of the dosing tank 4. The dosing tank 4 is provided with a discharge pipe 43 at the discharge end, the discharge pipe 43 is convenient for discharging medicament. The electromagnetic valve 44 is arranged on the discharge pipe 43, the electromagnetic valve 44 is convenient for controlling the opening and closing of the discharge pipe 43. And the bottom end of the discharge pipe 43 is provided with a fifth flange plate 45, the fifth flange plate 45 is connected with the third flange plate 191 through bolts.

[0052] As shown in Figure 1 shown, it further includes a slow flow sleeve 5 and a cover plate 6, the bottom end of the slow flow sleeve 5 is connected with the water inlet end of the sand sink 1, the cover plate 6 is arranged at the top opening of the slow flow sleeve 5, the slow flow sleeve 5 cooperates with the cover plate 6 to facilitate the slow flow of sewage, so as to avoid the scouring kinetic energy of the sewage being too large to cause the deposited sand to be washed away.

[0053] As shown in Figure 7 shown, the bottom end of the slow flow sleeve 5 is provided with an elbow pipe 52, the end of the elbow pipe 52 is provided with a sixth flange plate 53, the sixth flange plate 53 is connected with the water inlet end of the sand sink 1; this structure is convenient for connecting the slow flow sleeve 5 with the sand sink 1.

[0054] As shown in Figure 8 shown, the bottom end of the cover plate 6 is provided with an adapter ring 61, the adapter ring 61 is convenient for being threadedly connected with the slow flow sleeve 5. The top end of the cover plate 6 is provided with an external connection pipe 62, the top end of the external connection pipe 62 is provided with a seventh flange plate 63, the external connection pipe 62 and the seventh flange plate 63 are convenient for connecting the cover plate 6 with the sewage conveying pipe.

[0055] As shown in Figure 1 and Figure 9As shown, it also includes a filter basket 7, which facilitates the filtration of large particles of impurities in sewage. The slow flow sleeve 5 is provided with a limiting ring 51, the filter basket 7 is abutted on the top of the limiting ring 51, and the filter basket 7 is provided with a filter screen 72 at the bottom, which is convenient and effective for filtering sewage. The filter basket 7 is provided with a pull opening 71 on both sides, which is convenient for disassembling the filter basket 7.

[0056] Working principle: in use, according to the use requirement, the sand trap 1 is installed at the specified position, and the sewage conveying pipeline is connected with the water inlet pipe 17 and the drain pipe 15; then the appropriate amount of medicament is injected into the dosing tank 4, and the electromagnetic valve 44 and the screw conveying assembly 3 are connected with the control system; the sewage is buffered by the baffle after being discharged into the sedimentation tank, so that the kinetic energy of the sewage is weakened, and the water level in the sand trap 1 is slowly raised, and the sand in the sewage is deposited into the sedimentation cavity 11 during the process of the water level rising, when the sand accumulates to a certain amount, the control system controls the screw conveying assembly 3 to discharge the sand from the sand trap 1. When the medicament needs to be added, the control system controls the electromagnetic valve 44 to open, so that the medicament enters the sewage to accelerate the sand precipitation.

[0057] In summary, compared with the prior art, the sand trap 1 is provided, the sand trap 1 is provided with a baffle, the space of the sand trap 1 is communicated along the bottom of the baffle; in this way, the sewage entering the sand trap 1 is buffered by the baffle, and then the water level is slowly raised, and the mud and sand are slowly deposited during the process of the water level rising, and the mud and sand are deposited at the bottom of the sand trap 1, the screw conveying assembly 3 is arranged at the bottom of the sand trap 1, and the mud and sand can be smoothly discharged through the screw conveying assembly 3, so that the problem of blockage is avoided, and the sand treatment of the sewage is greatly facilitated; the dosing tank 4 is arranged at the top of the sand trap 1, the dosing tank 4 is communicated with the sand trap 1, the electromagnetic valve 44 is arranged at the bottom of the dosing tank 4, and the medicament can be added in the sand trap 1 by controlling the opening and closing of the electromagnetic valve 44, which is simple and convenient to operate and easy to use.

[0058] The preferred embodiments of the utility model have been described above, and are not used to limit the utility model. For those skilled in the art, the utility model can be changed and varied. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sewage treatment sand separation device comprising a sand separation tank (1), characterized in that, The sand box (1) bottom both ends are provided with support (2), the sand box (1) bottom end is provided with sedimentation chamber (11), and the sand box (1) inside is provided with a partition, the partition bottom is provided with an opening to make the sand box (1) internal space communicate;The sedimentation chamber (11) bottom end is connected with screw conveyor assembly (3), the screw conveyor assembly (3) is used to discharge the sand inside the sedimentation chamber (11) side;The sand box (1) top end is provided with dosing tank (4), the dosing tank (4) inner cavity communicates with the sand box (1) inside, the dosing tank (4) discharge end is provided with electromagnetic valve (44), is used to control dosing tank (4) open and close.

2. A sewage treatment sand separation apparatus according to claim 1, wherein The sand box (1) bottom surface is close to the position of both ends and is provided with connecting table (12), and the sand box (1) bottom end is provided with sand discharge pipe (13), the sand discharge pipe (13) bottom is provided with first flange (14);The sand box (1) one end bottom is provided with water inlet pipe (17), the other end top is provided with drain pipe (15), the water inlet pipe (17) and drain pipe (15) end are provided with second flange (16);The sand box (1) top end is provided with dosing pipe (18), the dosing pipe (18) is T-shaped structure, and the dosing pipe (18) top end is provided with connecting pipe (19), the connecting pipe (19) end is provided with third flange (191).

3. The sewage treatment sand removal device according to claim 1, characterized in that, The support (2) top and bottom are uniformly provided with a plurality of bolt holes (21), the support (2) top end and the sand box (1) are fixed by bolt connection.

4. The sewage treatment sand removal device according to claim 1, characterized in that, The screw conveyor assembly (3) includes conveying cylinder (31), conveying screw (32) and drive motor (33), one end of the conveying cylinder (31) close to the drive motor (33) is provided with bearing (313), the conveying screw (32) is rotatably connected with the bearing (313), the drive motor (33) is provided with fixed foot (331) on one end of the conveying cylinder (31), the fixed foot (331) is connected with the conveying cylinder (31) by bolt, and the output end of the drive motor (33) is connected with the conveying screw (32), the top end of the conveying cylinder (31) side is provided with sand inlet pipe (311), the top end of the sand inlet pipe (311) is provided with fourth flange (312).

5. The sewage treatment sand removal device according to claim 2, characterized in that, The dosing tank (4) top end is provided with dosing port (41), the dosing port (41) is threadedly connected with cover (42);The dosing tank (4) discharge end is provided with dosing pipe (43), the electromagnetic valve (44) is arranged on the dosing pipe (43), and the dosing pipe (43) bottom end is provided with fifth flange (45), the fifth flange (45) and the third flange (191) are connected by bolt.

6. The sewage treatment sand removal device according to any one of claims 1-5, characterized in that, It also includes slow flow sleeve (5) and cover plate (6), the slow flow sleeve (5) bottom end is connected with the sand box (1) water inlet end, the cover plate (6) is arranged at the top opening of the slow flow sleeve (5).

7. A sewage treatment grit removal apparatus according to claim 6, wherein The slow flow sleeve (5) bottom end is provided with elbow (52), the elbow (52) end is provided with sixth flange (53), the sixth flange (53) is connected with the sand box (1) water inlet end. The slow flow sleeve (5) bottom end is provided with elbow (52), the elbow (52) end is provided with sixth flange (53), the sixth flange (53) is connected with the sand box (1) water inlet end.

8. A sewage treatment grit removal apparatus according to claim 6, wherein The bottom end of the cover plate (6) is provided with an adapter ring (61), the top end of the cover plate (6) is provided with an external connecting pipe (62), and the top end of the external connecting pipe (62) is provided with a seventh flange plate (63).

9. The sewage treatment sand removal device according to claim 6, characterized in that, A filter basket (7) is further included, the inside of the slow flow sleeve (5) is provided with a limiting ring (51), the filter basket (7) abuts against the top of the limiting ring (51), and the bottom of the filter basket (7) is provided with a filter screen (72), and the two sides of the filter basket (7) are symmetrically provided with pull openings (71).

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