阅读说明：本技术 一种污水旋流器的防堵塞装置 (Anti-blocking device of sewage swirler ) 是由 潘志成 高亚琳 牟菁 钟亚萍 张慧敏 钟铭 于 2019-12-17 设计创作，主要内容包括：本发明公开了一种污水旋流器的防堵塞装置,属于污水旋流器防堵塞技术领域,包括顶部敞开的箱体以及分别设置在箱体前端和后端的入口、出口,所述出口与污水旋流器连接,所述箱体内设有包括多个过滤网的滤网单元,所述箱体的两侧分别设置有与箱体连通的辅助过滤单元,所述辅助过滤单元的进水口连通于滤网单元的前侧,所述辅助过滤单元的出水口连通于滤网单元的后侧；所述辅助过滤单元的杂质排出口连通有杂质处理箱；在滤网单元中位于最前端的过滤网靠近箱体侧壁的两端,具有与辅助过滤单元的进水口相邻近的导向部。本发明能够在对箱体内废水通过过滤网进行过滤的同时进行辅助过滤,减小第一个过滤网的过滤压力,有效的减小了堵塞的发生率。(The invention discloses an anti-clogging device of a sewage cyclone, which belongs to the technical field of sewage cyclone anti-clogging, and comprises a box body with an open top, and an inlet and an outlet which are respectively arranged at the front end and the rear end of the box body, wherein the outlet is connected with the sewage cyclone; the impurity discharge port of the auxiliary filtering unit is communicated with an impurity treatment box; the filter screen at the foremost end of the filter screen units is provided with guide parts adjacent to the water inlet of the auxiliary filter unit at two ends close to the side wall of the box body. The invention can filter the wastewater in the tank body through the filter screens and simultaneously perform auxiliary filtration, thereby reducing the filtration pressure of the first filter screen and effectively reducing the occurrence rate of blockage.)

1. The utility model provides a sewage cyclone's anti-clogging device, includes open box (1) in top and sets up respectively in entry (2), export (3) of box (1) front end and rear end, export (3) are connected its characterized in that with sewage cyclone: a filter screen unit comprising a plurality of filter screens (10) is arranged in the box body (1), auxiliary filter units communicated with the box body (1) are respectively arranged on two sides of the box body (1), a water inlet (16) of each auxiliary filter unit is communicated with the front side of the corresponding filter screen unit, and a water outlet of each auxiliary filter unit is communicated with the rear side of the corresponding filter screen unit; the impurity discharge port of the auxiliary filtering unit is communicated with an impurity treatment box (5); the filter screen (10) at the foremost end of the filter screen units is provided with guide parts (14) close to the water inlet (16) of the auxiliary filter unit at two ends close to the side wall of the box body (1).

2. The anti-clogging device for a sewage cyclone according to claim 1, wherein: the auxiliary filtering unit comprises a return pipe (4) and a Y-shaped filter (8), at least one Y-shaped filter (8) is arranged in the middle of the return pipe (4), a storage tank end of the Y-shaped filter (8) is communicated with an impurity treatment tank (5), a filter cover (6) is arranged at a water outlet at the inner bottom end of the impurity treatment tank (5), and a water outlet of the impurity treatment tank (5) is communicated with a box body (1) at the rear side of the filter screen unit through a water outlet pipe connected with a water pump (9).

3. The anti-clogging device for a sewage cyclone according to claim 2, wherein: the number of the Y-shaped filters (8) is two, and the filtering pore size of the Y-shaped filter (8) close to the water inlet (16) of the auxiliary filtering unit is larger than that of the other Y-shaped filter (8); a flow-limiting electromagnetic valve (7) is arranged on the return pipe (4) between the Y-shaped filter with larger filter pore diameter and the water inlet (16) of the auxiliary filter unit.

4. The anti-clogging device for a sewage cyclone according to claim 3, wherein: and a water inlet (16) of the auxiliary filtering unit is arranged in the middle of the inner wall of the box body (1).

5. An anti-clogging device for a sewage cyclone according to any of claims 1-4, characterized in that: two ends of a filter screen (10) of the filter screen unit are respectively connected between the inner side walls of the box body (1) through a mounting seat (11), a plurality of parallel transverse sliding grooves (17) are longitudinally formed in the inner side wall of the box body (1) positioned on one side of the mounting seat (11), sliding blocks fixedly connected with the mounting seat (11) are connected in the transverse sliding grooves (17) in a sliding mode, and buffer springs (18) are respectively arranged between the sliding blocks and the side walls of the two ends of the transverse sliding grooves (17); and shielding plates (12) which are used for shielding the transverse sliding grooves (17) and are in sliding connection with the inner side wall of the box body (1) are arranged on two sides of the mounting seat (11).

6. The anti-clogging device for a sewage cyclone according to claim 5, wherein: the transverse sliding groove (17) comprises a first sliding groove (171) positioned on the outer side and a second sliding groove (172) arranged at the bottom of the first sliding groove (171), a step structure is formed between the first sliding groove (171) and the second sliding groove (172), the sliding blocks are convex sliding blocks (20), the convex ends of the convex sliding blocks (20) are connected in the second sliding groove (172) in a sliding mode, and the convex ends of the convex sliding blocks (20) are connected in the first sliding groove (171) in a sliding mode; the buffer spring (18) is clamped in the second sliding groove (172).

7. The anti-clogging device for a sewage cyclone according to claim 6, wherein: spacing hole (21) have been seted up respectively to coaxial on the both ends lateral wall of second spout (172), the both sides of the protruding end of convex slider (20) are fixed with spacing axle (22) with spacing hole (21) assorted, spacing axle (22) pass buffer spring (18) back and stretch into in spacing hole (21), spacing hole (21) and spacing axle (22) sliding connection.

8. The anti-clogging device for a sewage cyclone according to claim 7, wherein: the thickness of the shielding plate (12) is gradually reduced from one side close to the mounting seat (11) to the other side.

9. The anti-clogging device for a sewage cyclone according to claim 5, wherein: the filter screen is characterized in that a longitudinal sliding groove (19) which is connected with the filter screen (10) in a sliding mode is formed in one side, close to the filter screen (10), of the mounting seat (11) along the longitudinal direction, and an opening is formed in the top end of the longitudinal sliding groove (19).

10. The anti-clogging device for a sewage cyclone according to claim 5, wherein: the bottom of a filter screen (10) of the filter screen unit is fixedly connected with a vertical filter plate (13), the filter plate (13) is provided with uniformly distributed filter holes, and two ends of the filter plate (13) are provided with vertical baffles (15); the filter pore diameters of a plurality of filter screens (10) of the filter screen unit are sequentially decreased progressively from the inlet (2) to the outlet (3) of the box body (1).

Technical Field

The invention relates to the technical field of blockage prevention of a sewage cyclone, in particular to a blockage prevention device of a sewage cyclone.

Background

In wet desulphurization, a wastewater cyclone belongs to the most terminal cyclone equipment of a wastewater system, and foreign matters in the system can pass through the equipment, such as lining rubber falling off due to the abrasion of a lining rubber pipeline, scale falling off from an absorption tower, a lining plate abraded by a mill, wood chips carried by limestone and the like. The caliber of the sand settling nozzle at the bottom of the wastewater cyclone is generally 6-10 mm, and the foreign matters can be blocked when passing through the wastewater cyclone, so that the wastewater system stops running and the safe and stable running of the system is influenced. The existing solution is to install a Y-type filter between the outlet of the gypsum cyclone and the inlet of the sewage cyclone, and the filter screen of the Y-type filter filters the foreign matters in the waste water and stores the foreign matters in the storage tank. The disadvantages are that: 1. because the totally-enclosed Y-shaped filter is adopted, the blockage is not easy to be found, and the slurry of the gypsum cyclone is easy to overflow; 2. because the structure of storage tank is reasonable inadequately, be difficult to by the clearance, the mediation time is longer after Y type filter blocks up, and need stop the waste water system operation during the mediation, influences the continuity of operation. Reference is made to the prior art as retrieved by the applicant:

Disclosure of Invention

The invention aims to solve the technical problems and provides an anti-blocking device of a sewage cyclone, which can filter the waste water in a box body through filter screens and simultaneously perform auxiliary filtration, reduce the filtration pressure of a first filter screen, effectively reduce the occurrence rate of blockage, and is convenient for cleaning impurities after auxiliary filtration, so that the filter screens are basically not required to be blocked.

The invention is realized by the following technical scheme:

an anti-blocking device of a sewage cyclone comprises a box body with an open top, and an inlet and an outlet which are respectively arranged at the front end and the rear end of the box body, wherein the outlet is connected with the sewage cyclone; the impurity discharge port of the auxiliary filtering unit is communicated with an impurity treatment box; the filter screen at the foremost end of the filter screen units is provided with guide parts adjacent to the water inlet of the auxiliary filter unit at two ends close to the side wall of the box body.

In order to better realize the invention, the auxiliary filtering unit comprises a return pipe and a Y-shaped filter, at least one Y-shaped filter is arranged in the middle of the return pipe, a storage tank end of the Y-shaped filter is communicated with the impurity treatment tank, a filtering cover is arranged at a water outlet at the bottom end of the inner side of the impurity treatment tank, and a water outlet of the impurity treatment tank is communicated with a tank body at the rear side of the filtering screen unit through a water outlet pipe connected with a water pump.

In order to better realize the invention, the number of the Y-shaped filters is two, and the filtering pore size of the Y-shaped filter close to the water inlet of the auxiliary filtering unit is larger than that of the other Y-shaped filter; a flow-limiting electromagnetic valve is arranged on a return pipe between the Y-shaped filter with larger filter pore diameter and the water inlet of the auxiliary filter unit.

In order to better implement the invention, further, the water inlet of the auxiliary filtering unit is arranged in the middle of the inner wall of the box body.

In order to better realize the invention, two ends of a filter screen of the filter screen unit are respectively connected between the inner side walls of the box body through a mounting seat, a plurality of parallel transverse sliding grooves are longitudinally formed in the inner side wall of the box body positioned on one side of the mounting seat, sliding blocks fixedly connected with the mounting seat are slidably connected in the transverse sliding grooves, and buffer springs are respectively arranged between the sliding blocks and the side walls of the two ends of the transverse sliding grooves; and shielding plates which are used for shielding the transverse sliding grooves and are in sliding connection with the inner side wall of the box body are arranged on two sides of the mounting seat.

In order to better realize the invention, further, the transverse sliding groove comprises a first sliding groove positioned at the outer side and a second sliding groove arranged at the bottom of the first sliding groove, a step structure is formed between the first sliding groove and the second sliding groove, the sliding block is a convex sliding block, the convex end of the convex sliding block is connected in the second sliding groove in a sliding manner, and the convex end of the convex sliding block is connected in the first sliding groove in a sliding manner; the buffer spring is clamped in the second sliding groove.

In order to better realize the invention, the side walls of the two ends of the second chute are coaxially and respectively provided with a limiting hole, the two sides of the convex end of the convex sliding block are fixedly provided with a limiting shaft matched with the limiting hole, the limiting shaft penetrates through the buffer spring and then extends into the limiting hole, and the limiting hole is in sliding connection with the limiting shaft.

In order to better implement the invention, further, the thickness of the shielding plate is gradually reduced from one side close to the mounting seat to the other side.

In order to better realize the invention, a longitudinal sliding groove connected with the filter screen in a sliding manner is further formed in one side, close to the filter screen, of the mounting seat along the longitudinal direction, and an opening is formed in the top end of the longitudinal sliding groove

In order to better realize the invention, furthermore, the bottom of the filter screen unit is fixedly connected with a vertical filter plate, the filter plate is provided with uniformly distributed filter holes, and two ends of the filter plate are provided with vertical baffles; the filter apertures of a plurality of filter screens of the filter screen unit are decreased progressively from the inlet to the outlet of the box body.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) according to the invention, the auxiliary filtering unit is arranged, wastewater entering the box body can enter the auxiliary filtering unit through the guide part for filtering, the filtered wastewater can flow back into the box body without being filtered by the filtering net unit, so that the filtering pressure of the filtering net unit can be effectively reduced, the blocking frequency of the filtering net unit is greatly reduced, impurities filtered by the auxiliary filtering unit can be collected and treated by the impurity treatment box, the filter net does not need to be detached and the water is discharged in the filtering process of the box body wastewater frequently, and a stable and continuous working environment can be provided for filtering the box body wastewater, so that the box body wastewater is more practical and convenient.

(2) According to the invention, the Y-shaped filter and the return pipe are arranged, so that the wastewater entering the return pipe can be effectively filtered, the filtered impurities are conveyed into the impurity treatment box, the impurities can be conveniently treated through the impurity treatment box, the accumulation of the impurities in the box body is effectively slowed down, the wastewater in the impurity treatment box can be effectively conveyed into the box body after being filtered through the water pump and the filter cover, the waste of the wastewater and the discharge without treatment are avoided, the wastewater quantity in the impurity treatment box is reduced, the structure is simple, and the device is practical.

(3) The invention can carry out graded treatment on the wastewater by arranging the Y-shaped filter with larger and smaller filter pore diameters, reduces the mutual filter pressure, and effectively filters the wastewater in the return pipe.

(4) According to the invention, by arranging the plurality of transverse sliding grooves, the sliding blocks, the buffer springs, the shielding plates and the mounting seat, when the flow rate of wastewater entering the box body is high, the wastewater can be buffered through the transverse sliding grooves, the sliding blocks and the buffer springs, so that the rigid impact of high-speed water flow on the filter screen is avoided, and the service life of the filter screen is prolonged; and because when impurity is more in the box, through carrying out round trip movement under hydraulic effect, the hindrance impurity that can the certain degree adheres on the filter screen for the jam probability of filter screen is littleer, and is practical convenient.

(5) According to the invention, through the first sliding chute, the second sliding chute and the corresponding convex sliding block, the sliding connection structure of the convex sliding block and the first sliding chute and the second sliding chute is more stable, the sliding connection structure can better cope with larger water pressure or larger impact, and the structure is simple and more practical.

(6) The invention further improves the reliability and stability of the sliding of the convex sliding block in the first sliding chute and the second sliding chute by arranging the limiting shaft and the limiting hole.

(7) According to the invention, by arranging the shielding plate, wastewater and impurities can be effectively prevented from entering the first sliding chute and the second sliding chute to influence the sliding of the convex sliding block, and the wastewater can be effectively prevented from rusting the components in the convex sliding block; through progressively decreasing the setting to the thickness of sheltering from the dog for frictional force between shielding plate and the waste water reduces, can prevent through the inclined plane moreover that waste water from getting into horizontal spout, simple structure, practicality.

(8) According to the invention, the longitudinal sliding groove and the opening are arranged on the mounting seat, so that the filter screen can be conveniently dismounted and mounted during replacement and blockage treatment, and the mounting seat is more convenient.

(9) According to the invention, the filter plate is arranged at the bottom of the filter screen and the filter holes are formed in the filter plate, so that a part of impurities in the box body can be conveniently cleaned by taking out the filter screen plate, the cleaning is more convenient, and the resistance generated when the filter screen is lifted can be reduced by the arranged filter holes.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic view of a connection structure between the mounting base and the inner sidewall of the box body according to the present invention;

FIG. 3 is a schematic view of the present invention after the shutter is installed on the mounting seat;

fig. 4 is a schematic structural view of a portion a in fig. 2.

Wherein: 1-a box body; 2-an inlet; 3-an outlet; 4-a return pipe; 5-impurity treatment box; 6-a filter cover; 7-a current-limiting solenoid valve; an 8-Y filter; 9-a water pump; 10-a filter screen; 11-a mounting seat; 12-a shutter; 13-filter plate; 14-a guide; 15-a baffle; 16-a water inlet; 17-a transverse chute; 171-a first chute; 172-a second runner; 18-a buffer spring; 19-longitudinal sliding chute; 20-a male slider; 21-a limiting hole; 22-limiting shaft.

Detailed Description

Referring to the attached drawing 1, the anti-blocking device for the sewage cyclone comprises a box body 1 with an open top, and an inlet 2 and an outlet 3 which are respectively arranged at the front end and the rear end of the box body 1, wherein the outlet 3 is connected with the sewage cyclone, a filter screen unit comprising a plurality of filter screens 10 is arranged in the box body 1, auxiliary filter units communicated with the box body 1 are respectively arranged at two sides of the box body 1, a water inlet 16 of each auxiliary filter unit is communicated with the front side of the filter screen unit, and a water outlet of each auxiliary filter unit is communicated with the rear side of the filter screen unit; the impurity discharge port of the auxiliary filtering unit is communicated with an impurity treatment box 5; the filtering net 10 positioned at the foremost end among the filtering net units is provided with a guide portion 14 adjacent to the water inlet 16 of the auxiliary filtering unit near both ends of the side wall of the cabinet 1.

The box body 1 is open at the top and is in a cubic shape, so that the filtering condition in the box body 1 can be visually observed conveniently, and the blockage can be found and foreign matters in the box body can be cleaned conveniently in time; the anti-blocking device is provided with the filter screen unit and the auxiliary filter unit, can be suitable for a wastewater treatment system with larger wastewater treatment capacity, and can be set according to the actual wastewater treatment capacity; an inlet 2 at the front end of the box body 1 is connected with a gypsum cyclone, and an outlet 3 is connected with a sewage cyclone; the filter screen unit filters the wastewater in the box body 1, the auxiliary filter unit can perform auxiliary filtering on the wastewater in the box body 1, and the filter pressure of the filter screen unit is reduced, so that the efficiency of cleaning the interior of the box body 1 can be effectively reduced, the interior of the box body 1 can be cleaned by blocking with lower frequency, and a stable and continuous treatment environment can be provided for wastewater treatment; the number of the filter screen units can be multiple, preferably 2, and the guide parts 14 are arranged at two ends of the front filter screen 10 in the filter screen units, the guide parts 14 are formed by bending the two ends of the filter screen 10 towards the rear side, the extension direction of the inclined plane is the direction of the water inlet 16 of the return pipe 4, so that the waste water in the box body 1 can better enter the auxiliary filter unit, and the width of the guide parts 14 is preferably 1/3 occupying the width of the middle part without bending, so that the auxiliary filter unit can be well matched with the filter screen units for filtering; the filter screen 10 of the filter screen unit is preferably made of acid-base corrosion-resistant material; specifically, the inlet 2 is located at the upper end of the front end wall of the box body 1, and the outlet 3 is located at the bottom end of the rear end wall of the box body 1.

In waste water backward flow to box 1 after supplementary filter unit filtration treatment, and need not pass through the filtration of filter screen 10 unit, make can effectually alleviate filter screen unit's filtration pressure, great reduction the frequency that filter screen unit blockked up, and can collect and handle the impurity after supplementary filter unit filters through impurity treatment case 5, and do not need frequent in 1 waste water filtration process of box to filter screen 10 tear open get with the row of having gone up the back and handle, make and to provide comparatively stable and continuous operational environment for 1 waste water filtration of box, and is more practical convenient.

Further, as a preferred option of different embodiments, as shown in fig. 1, the auxiliary filtering unit includes a return pipe 4 and a Y-type filter 8, the middle part of the return pipe 4 is provided with at least one Y-type filter 8, the tank end of the Y-type filter 8 is communicated with the impurity treatment tank 5, a filter cover 6 is arranged at a water outlet at the bottom end inside the impurity treatment tank 5, and a water outlet of the impurity treatment tank 5 is communicated with the tank 1 at the rear side of the filtering net unit through a water outlet pipe connected with a water pump 9.

The return pipe 4 comprises a transition section and a straight line section, wherein the two ends of the transition section are respectively connected with the water inlet 16 and the water outlet of the auxiliary filtering unit, the straight line section is arranged between the two filtering ends, at least one filter or two or 3 filters are arranged on the straight line section, and the filtering pore diameters are sequentially decreased according to the sewage treatment sequence, so that the filtered sewage can be directly discharged to the rear side of the filter screen unit, and the filtering pressure of the filter screen unit is reduced; the Y-shaped filter 8 adopts the conventional Y-shaped filter 8, but the storage tank end of the Y-shaped filter 8 is connected with the impurity treatment box 5 in a manner of being directly communicated, so that impurities and a small part of sewage filtered by the Y-shaped filter 8 enter the impurity treatment box 5, and the impurities in the impurities can be conveniently cleaned through the impurity treatment box 5, so that the cleaning of a filter screen assembly is reduced, and the cleaning is more convenient; when the sewage is filtered by the Y-shaped filter 8, a small part of sewage enters the impurity treatment box 5, impurities are separated from the sewage by the filter cover 6, and the separated water is conveyed into the box body 1 by the water outlet pipe communicated with the water outlet under the conveying action of the water pump 9, so that the impurity sewage amount in the impurity treatment box 5 is increased, and the impurities can be better cleaned; the filtering aperture of the filtering cover 6 is preferably consistent with the diameter of the filtering aperture of the second filtering net 10 of the filtering net unit.

Further, as a preference of different embodiments, two Y-shaped filters 8 are provided, and the filtering pore size of the Y-shaped filter 8 close to the water inlet 16 of the auxiliary filtering unit is larger than that of the other Y-shaped filter 8; a flow-limiting electromagnetic valve 7 is arranged on the return pipe 4 between the Y-shaped filter with larger filter pore diameter and the water inlet 16 of the auxiliary filter unit.

Through setting up a great, a less Y type filter 8 in filtration pore diameter, can carry out stage treatment to waste water, reduce filtering pressure each other for can carry out effectual filtration to the waste water in the back flow 4, through setting up current-limiting solenoid valve 7, can be convenient for when needing to maintain supplementary filter unit and carry out selectivity control to sewage filterable work load according to the reality.

Further, as a preference of the different embodiment, as shown in fig. 2, the water inlet 16 of the auxiliary filter unit is provided at the middle of the inner wall of the case 1.

The filtering function of the auxiliary filtering unit is inferior to that of the filter screen unit, and the auxiliary filtering unit is in an auxiliary matching relationship; the water inlet 16 of the auxiliary filtering unit is arranged in the middle of the inner wall of the box body 1, so that when the waste water in the box body 1 is less, the water level of the auxiliary filtering unit does not reach the water level of the water inlet 16 of the auxiliary filtering unit, the water can be filtered only by the filter screen unit, and the resources can be reasonably utilized; whether the water level of the water inlet 16 is reached or not can be detected through the water level detection sensor, when the water level of the water inlet 16 of the auxiliary filtering unit is reached, the flow-limiting electromagnetic valve 7 is controlled to be opened through the background controller, the water pump 9 is enabled to operate, and the auxiliary filtering unit is enabled to be matched with the filter screen unit to carry out filtering operation.

Further, as shown in fig. 2 and fig. 3, preferably, as for different embodiments, two ends of the filter screen 10 of the filter screen unit are respectively connected between the inner side walls of the box body 1 through the mounting seat 11, and a plurality of parallel transverse sliding grooves 17 are longitudinally formed in the inner side wall of the box body 1 on one side of the mounting seat 11, a sliding block fixedly connected with the mounting seat 11 is slidably connected in the transverse sliding grooves 17, and a buffer spring 18 is respectively arranged between the sliding block and the side wall at two ends of the transverse sliding groove 17; and shielding plates 12 which are used for shielding the transverse sliding grooves 17 and are in sliding connection with the inner side wall of the box body 1 are arranged on two sides of the mounting seat 11.

Each filter screen 10 of the filter screen unit is connected to the inner side wall of the box body 1 through a mounting seat 11, two ends of each filter screen 10 correspond to one mounting seat 11 respectively, the mounting seats 11 are used for mounting the filter screens 10, the mounting seats 11 are preferably made of corrosion-resistant metal materials, and the mounting seats 11 and the filter screens 10 can be connected in a clamping and bolt mode, and other connection modes can be adopted; the installation seat 11 is in slidable elastic connection with the inner side wall of the box body 1, and is realized through a transverse sliding groove 17, a sliding block and a buffer spring 18, the transverse sliding grooves 17 are arranged on the inner side wall of the box body 1 provided with the installation seat 11 at intervals, preferably 2, and are respectively positioned at the upper end position and the lower end position of the installation seat 11, so that the stress can be uniform, and a plurality of the transverse sliding grooves 17 can be arranged according to the actual wastewater treatment amount; the transverse sliding groove 17 is transversely arranged, so that the mounting seat 11 can elastically slide along the length direction of the inner side wall of the box body 1, and the buffer springs 18 are respectively arranged between the sliding block and the side walls at two ends of the transverse sliding groove 17, so that the filter screen 10 can be effectively buffered under the action of large water pressure or loss, the acting force applied by waste water can be better borne, and the mounting seat 11 can move back and forth to a certain extent under the action of waste water flow, so that impurities can be prevented from being fixedly adhered to the filter screen 10 to a certain extent, the blocking probability of the filter screen 10 is smaller, and the mounting seat is practical and convenient; through setting up shielding plate 12, can effectually prevent that waste water and impurity from getting into first spout 171 and second spout 172, influencing convex slider 20's slip, can effectually prevent moreover that waste water from to the corrosion of its parts, of course, can adopt sliding seal between shielding plate 12 and the horizontal spout 17 of box 1.

Further, as shown in fig. 4, preferably, the transverse sliding groove 17 includes a first sliding groove 171 located at the outer side and a second sliding groove 172 opened at the bottom of the first sliding groove 171, and a step structure is provided between the first sliding groove 171 and the second sliding groove 172, the sliding blocks are male sliding blocks 20, the male sliding blocks 20 have their male ends slidably connected in the second sliding groove 172, and the male sliding blocks 20 have their male ends slidably connected in the first sliding groove 171; the buffer spring 18 is clamped in the second sliding groove 172.

Through the first sliding groove 171, the second sliding groove 172 and the corresponding convex sliding block 20, the sliding connection structure of the convex sliding block 20 and the first sliding groove 171 and the second sliding groove 172 is more stable, the large water pressure or large impact can be better handled, and the structure is simple and more practical; of course, there is another implementation structure in which the buffer spring 18 is disposed in the first slide groove 171 and the diameter of the buffer spring 18 is larger than the width of the second slide groove 172, so that the boss end of the male slider 20 is connected with the buffer spring 18.

Further, as a preferred option of different embodiments, the side walls of the two ends of the second sliding chute 172 are coaxially and respectively provided with a limiting hole 21, two sides of the protruding end of the convex sliding block 20 are fixed with a limiting shaft 22 matched with the limiting hole 21, the limiting shaft 22 penetrates through the buffer spring 18 and then extends into the limiting hole 21, and the limiting hole 21 is slidably connected with the limiting shaft 22.

By providing the stopper shaft 22 and the stopper hole 21, the reliability and stability of the sliding of the male slider 20 in the first and second sliding grooves 171 and 172 are further improved.

Further, as shown in fig. 3, the thickness of the shielding plate 12 is gradually decreased from one side close to the mounting seat 11 to the other side.

Through progressively decreasing the setting to the thickness of shielding plate 12 for frictional force between shielding plate and the waste water reduces, can prevent through the inclined plane moreover that waste water from getting into horizontal spout 17, can cooperate mount pad 11 to carry out cushioning effect, simple structure, practicality.

Further, as a preferred option of different embodiments, a longitudinal sliding groove 19 slidably connected with the filter screen 10 is formed in one side of the mounting seat 11 close to the filter screen 10 along the longitudinal direction, and an opening is formed at the top end of the longitudinal sliding groove 19.

Through set up vertical spout 19 and opening on mount pad 11, can be convenient for when filter screen 10 changes and blocks up the dismouting of handling, and is more convenient.

Further, as shown in fig. 1, as a preferred option of different embodiments, a vertical filter plate 13 is fixedly connected to the bottom of the filter screen 10 of the filter screen unit, the filter plate 13 is provided with uniformly distributed filter holes, and two ends of the filter plate 13 are provided with vertical baffles 15; the filter aperture of a plurality of filter screens 10 of the filter screen unit is gradually reduced from the inlet 2 to the outlet 3 of the box body 1.

Through set up filter plate 13 and the filtration pore of seting up on filter plate 13 in filter screen 10 bottom, can be convenient for clear up some impurity in box 1 through taking out filter screen 10 board for it is more convenient to clear up, and the filtration pore of setting can reduce the resistance that produces when filter screen 10 lifts up.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.