CN217794855U - Broken type pretreatment of hospital sewage device - Google Patents

Abstract

The utility model provides a crushing type pretreatment device for hospital domestic sewage, which comprises a separation box and a press-cutting box arranged on one side of the separation box side by side, wherein the separation box and the press-cutting box are communicated through three through openings, namely a feed inlet, a slag feeding opening and a discharge opening, from top to bottom; the top of the separation box is provided with a water inlet, the bottom of the separation box is provided with a water outlet, and the middle part of the separation box is provided with an inverted U-shaped waterproof cover; a first filter plate is arranged above the water-proof cover; the slag conveying port is arranged below the water-proof cover, and a crushing mechanism for crushing hard solid impurities is also arranged below the water-proof cover; and a second filter plate, a pressure cutting plate and a slag pushing mechanism are arranged in the pressure cutting box. The utility model discloses a mode that multi-stage separation, multiple crushing method combined together separates solid-liquid earlier, handles respectively according to two kinds of different forms of solid-state impurity again, has realized the effective breakage of solid-state debris, is difficult for blockking up the sewage pump, ensures domestic sewage's long-time orderly emission.

Description

Broken type hospital domestic sewage pretreatment device

Technical Field

The utility model relates to a sewage treatment technical field, in particular to broken type hospital domestic sewage pretreatment device.

Background

Domestic sewage in hospital outpatient buildings and sickrooms of all floors is collected by pipelines and flows into a sewage lifting well under the medical ward buildings, and then is lifted to a hospital drainage pipe network by a sewage pump and sent to a sewage treatment station for treatment. However, the domestic sewage is often mixed with solid garbage which has a large volume and cannot be dissolved, such as sanitary napkins, plastic bags, hard chopsticks, instant noodle boxes and the like, besides conventional food residues, feces, sewage and the like, and the solid garbage easily blocks a sewage pump, so that sewage overflows, generates foul smell, affects air cleanness, affects visual effect, is not beneficial to maintaining good sanitary conditions of hospitals, and is not beneficial to development of building intelligent hospitals.

In order to solve the problem, a hospital tries to additionally arrange a filter box on a pipeline at the front end of a sewage pump, a flat filter screen is arranged in the filter box for filtering impurities, but solid impurities are easy to block after being accumulated on the flat filter screen, so that the flow resistance of sewage is increased, and the normal discharge of the sewage is influenced; moreover, the sundries accumulated on the flat filter screen often contain solid garbage and excrement, and the sundries are difficult to find out to be handled by a unit, so that the problem which is difficult to solve by the environmental protection department of hospitals is formed.

Therefore, how to ensure the smooth discharge of the domestic sewage in hospitals becomes a problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that prior art exists, the utility model aims to provide a broken type hospital domestic sewage pretreatment device separates and is broken with the debris in the domestic sewage.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a crushing type pretreatment device for hospital domestic sewage comprises a separation box and press-cutting boxes arranged on one side of the separation box side by side, wherein the separation box is communicated with the press-cutting boxes through three through holes, namely a feed inlet, a slag feed port and a discharge port, from top to bottom; the top of the separation box is provided with a water inlet, the bottom of the separation box is provided with a water outlet, the middle part of the separation box is provided with an inverted U-shaped water-proof cover, and a flume for sewage to flow into the bottom of the separation box is formed between the left side wall and the right side wall of the water-proof cover and the corresponding side wall of the separation box; a first filter plate is arranged above the water-proof cover, and the tail end of the first filter plate penetrates through the feed inlet; the slag conveying port is arranged below the water-proof cover, and a crushing mechanism for crushing hard solid impurities is also arranged below the water-proof cover;

a second filter plate is arranged in the press-cutting box, one side of the second filter plate close to the separation box is communicated with a slag feeding port, a press-cutting plate capable of being pressed and cut up and down in a reciprocating manner under the driving of a press-cutting cylinder is arranged above the second filter plate, and the second filter plate and the press-cutting plate are both grid plates; and a slag pushing mechanism for pushing hard solid impurities into the crushing mechanism is also arranged in the pressing and cutting box.

The utility model discloses a further improvement lies in: the first filter plate is a grid plate or a grid plate which is obliquely arranged, the high end of the first filter plate is correspondingly arranged below the water inlet, and the low end of the first filter plate penetrates through the feed inlet.

The utility model discloses a further improvement lies in: the front end of the first filter plate is provided with a bent filter plate slightly inclined upwards.

The utility model discloses a further improvement lies in: the crushing mechanism comprises a large tooth crushing roller set and a small tooth crushing roller set arranged below the large tooth crushing roller set, and the transverse total width of the small tooth crushing roller set is not less than that of the large tooth crushing roller set.

The utility model discloses a further improvement lies in: the slag pushing mechanism comprises a pushing plate with the bottom abutted to the upper end face of the second filter plate, the rear end of the pushing plate is connected with a pushing rod, and the pushing rod penetrates through the side wall of the pressing and cutting box and then is connected with a slag pushing cylinder.

The utility model discloses a further improvement lies in: the bottom of the pressing and cutting box is in an inclined shape pointing to the discharge hole.

Since the technical scheme is used, the utility model discloses the technological progress who gains is:

the utility model provides a broken type hospital domestic sewage pretreatment device guides domestic sewage's flow path through separator box and crush-cut case, separates sewage and debris wherein to the different nature of debris, adopts different methods to make its breakage become the particle that is no longer than 1cm, can directly discharge along with sewage, unblock sewage pump and reduced the preliminary treatment degree of difficulty at follow-up sewage treatment station, can make the domestic sewage pipe network of hospital keep smoothly discharging for a long time.

The utility model discloses carry out the multi-stage filtration separation to domestic sewage, handle solid-state debris according to the nature of difference again, soft debris such as excrement and urine, food waste pass through the second filter plate under the pressure of pressure cutting plate and fall down, and the stereoplasm impurity that can't pass through the second filter plate is sent into the crushing roller and is carried out the two-stage and cut up, through the mode that this kind of categorised breakage, multistage breakage combined together, ensures that domestic sewage's debris is whole by thoroughly broken suitable size.

Because the utility model discloses a mode that multi-stage separation, multiple crushing method combined together separates solid-liquid earlier, handles respectively according to two kinds of different forms of solid-state impurity again, and every debris all can realize its self breakage at specific process, and every stage is difficult for taking place the jam, has effectively prolonged the utility model discloses a long during the operation need not frequent maintenance and clearance.

Drawings

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

FIG. 2 isbase:Sub>A schematic sectional view taken along line A-A in FIG. 1;

FIG. 3 is a schematic view of an included angle between the first filter plate and the bent filter plate and the horizontal direction;

fig. 4 is a schematic view of the direction of rotation of the crushing roller set.

In the figure, 1, a separation box, 2, a press cutting box, 3, a feeding hole, 4, a slag feeding hole, 5, a discharging hole, 6, a water discharging pipe, 7, a water inlet, 8, a water isolating cover, 9, a first filter plate, 10, a bent filter plate, 11, a large tooth crushing roller set, 12, a small tooth crushing roller set, 13, a diversion trench, 14, a second filter plate, 15, a push plate, 16, a push rod, 17, a slag pushing cylinder, 18, a press cutting plate, 19, a transmission rod, 20 and a press cutting cylinder.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

A crushing type pretreatment device for hospital domestic sewage, which comprises a separation box 1 and a pressing and cutting box 2, as shown in figures 1-4. The press-cutting box 2 is arranged on one side of the separation box 1, and the separation box 1 is communicated with the press-cutting box 2 through three through holes from top to bottom; specifically, the upper parts of the separation box 1 and the press-cutting box 2 are communicated through a feeding hole 3, the middle parts of the separation box 1 and the press-cutting box 2 are communicated through a slag feeding hole 4, and the bottom parts of the separation box 1 and the press-cutting box 2 are communicated through a discharging hole 5. Domestic sewage of a hospital firstly enters a separation box 1 for preliminary separation, solid waste enters a press-cutting box 2 for press-cutting through a feeding hole 3, soft sundries are returned to the bottom of the separation box 1 through a discharging hole 5 after being press-cut, hard solid sundries which cannot be cut are returned to the separation box 1 through a slag sending hole 4 to be broken and then fall into the bottom of the separation box 1, and the hard solid sundries are discharged through a drain pipe 6 after being converged and then lifted to a hospital drain pipe 6 net for treatment through a sewage pump.

The separator box 1 is a rectangular box body, as shown in fig. 1, a water inlet 7 is arranged at the top of the separator box 1, a water outlet is arranged at the bottom of the separator box 1, the water inlet 7 is communicated with a sewage lifting and conveying pipeline, the water outlet is communicated with a drain pipe 6, and a sewage pump is arranged at the downstream of the drain pipe 6. The middle part of separator 1 sets up the water proof cover 8 of an inversion U type, both ends are fixed respectively on the antetheca of separator 1 and back wall around water proof cover 8, form the tye that can supply sewage to flow into separator 1 bottom between the lateral wall of controlling of water proof cover 8 and the corresponding lateral wall of separator 1. The separation box 1 is divided into a separation cavity at the upper part and a crushing cavity at the lower part by a water-proof cover 8.

The water inlet 7 of the separation box 1 is arranged on one side far away from the press-cutting box 2, and the first filter plate 9 is correspondingly arranged below the water outlet. The first filter plate 9 is a grid plate or a grid plate which is obliquely arranged, the high end of the first filter plate is correspondingly arranged below the water inlet 7, and the low end of the first filter plate penetrates through the feed inlet 3 and is inserted into the press-cutting box 2. After entering from the water inlet 7, the hospital domestic sewage slowly descends along the first filter plate 9 in an inclined manner under the action of gravity, most of the liquid sewage leaks through the grids or the grids, and flows to the bottom of the separation box 1 after converging into the water flowing groove along the outer wall of the water isolating cover 8; the unseparated solid sundries and part of the liquid sewage are pushed into the pressing and cutting box 2 under the action of gravity for further treatment.

The width of the first filter plate 9 is consistent with that of the separation box 1, the high end and two side ends of the first filter plate 9 are fixed on the inner wall of the corresponding side of the separation box 1, and the bottom end of the first filter plate 9 is suspended.

Preferably, the front end of the first filter plate 9 is provided with a bent filter plate 10 slightly inclined upwards, and the bent filter plate 10 can generate certain resistance to sewage flowing downwards, so that the retention time of the sewage on the first filter plate 9 and the filtering and separating effects are increased, liquid sewage is separated as much as possible, and the amount of the liquid sewage brought into the crush-cutting box 2 is reduced.

As shown in fig. 3, an included angle α between the first filter plate 9 and the horizontal direction is 12 ° to 30 °, and a gentle slope can increase the retention and filtration time of the sewage on the first filter plate 9. The included angle between the bent filter plate 10 and the horizontal direction is 5-10 degrees, and smooth conveying of solid sundries is not influenced.

And a crushing mechanism for crushing hard solid impurities is arranged below the waterproof cover. The crushing mechanism comprises a large-tooth crushing roller group 11 arranged above and a small-tooth crushing roller group 12 arranged below the large-tooth crushing roller group 11, the large-tooth crushing roller group 11 and the small-tooth crushing roller group 12 are arranged along the length direction of the separation box 1, the large-tooth crushing roller group 11 comprises a plurality of large-tooth crushing rollers which are transversely arranged, the small-tooth crushing roller group 12 comprises a plurality of small-tooth crushing rollers which are transversely arranged, and adjacent crushing rollers rotate reversely (as shown in fig. 4), so that hard solid sundries can be crushed. Hard solid impurities which are not easy to crush are crushed twice, so that the hard solid impurities can be crushed into hard solid particles of about 1cm, and the hard solid particles fall into the bottom of the separation box 1 and are discharged together with liquid sewage.

The inlet end of the large-tooth crushing roller group 11 is lower than the slag feeding port 4 and is used for receiving hard solid impurities from the pressing and cutting box 2.

The transverse total width of the small tooth crushing roller group 12 is not less than that of the large tooth crushing roller group 11, so that hard solid impurities subjected to primary crushing are enabled to completely enter the small tooth crushing roller group 12 for secondary crushing.

In order to facilitate the smooth outflow of sewage from the separator 1, the bottom of the separator 1 is provided with a diversion trench 13 gradually contracted to the drain pipe 6, and the surface of the diversion trench 13 is smooth, so that the deposition of solid sundry particles is avoided. The bottom of the pressing and cutting box 2 is arranged to be inclined towards the discharge hole 5.

The inside of the press-cutting box 2 is provided with a second filter plate 14, a press-cutting plate 18 and a slag pushing mechanism. The second filter plates 14 are horizontally arranged in the middle of the pressing and cutting box 2, and the height of the second filter plates 14 is slightly higher than that of the large-tooth crushing roller group 11; the second filter plate 14 is a grid plate, and the inner diameter of the grid is about 2 cm. The slag pushing mechanism is used for pushing hard solid impurities left on the second filter plate 14 into the crushing mechanism. The slag pushing mechanism comprises a push plate 15 which is vertically arranged, the width of the push plate 15 is consistent with that of the second filter plate 14, and the bottom of the push plate 15 is abutted against the upper end surface of the second filter plate 14; the rear end of the push plate 15 is connected with a push rod 16, and the push rod 16 penetrates through the side wall of the pressing and cutting box 2 and then is connected with a slag pushing cylinder 17; when the slag pushing cylinder 17 works, the push rod 16 drives the push plate 15 to push out, and hard solid impurities on the second filter plate 14 are pushed into the large-tooth crushing roller set 11 through the slag conveying port 4 to be crushed.

A press-cutting plate 18 is arranged above the second filter plate 14, the press-cutting plate 18 is also a grid plate, and the grids of the press-cutting plate 18 and the grids of the second filter plate 14 are arranged in a staggered manner. One side of the pressure cutting plate 18, which is close to the push plate 15, is provided with a gap for accommodating the push plate 15, and one side of the pressure cutting plate 18, which is close to the feed port 3, is provided with a feed gap, so that solid impurities can be ensured to fall onto the second filter plate 14 through the feed port 3. The pressure cutting plate 18 is in transmission connection with a pressure cutting cylinder 20 positioned at the top of the pressure cutting box 2 through a transmission rod 19, the pressure cutting cylinder 20 drives the pressure cutting plate 18 to move up and down when doing work, so as to extrude solid impurities on the second filter plate 14, and soft solid impurities deform under the extrusion action, fall into the bottom of the pressure cutting box 2 along the grids of the second filter plate 14 and then return to the bottom of the separation box 1 through a discharge hole 5; hard solid impurities cannot be deformed under the extrusion action and remain on the second filter plate 14.

The connection mode of the second filter plate 14 and the press-cutting box 2 can be selected according to the actual condition of sewage, for example, welding, fixing through a corner support welded on the inner wall of the press-cutting box 2, or installing by forming a step groove on the inner wall of the press-cutting box 2.

In order to facilitate the soft solid sundries to return to the bottom of the separation box 1 from the bottom of the press-cutting box 2, the bottom of the press-cutting box 2 is arranged to be inclined towards the discharge hole 5.

The start and stop of the pressure cutting cylinder 20, the slag pushing cylinder 17, the power motor of the large tooth crushing roller group 11 and the power motor of the small tooth crushing roller group 12 can be controlled manually or automatically or in other control modes as long as the start or stop can be realized. Generally, the pressure cutting cylinder 20, the large tooth crushing roller group 11 and the small tooth crushing roller group 12 are continuously started to operate, and the slag pushing cylinder 17 is intermittently started to operate; or the press-cutting cylinder 20 can be continuously opened to operate, a window is formed in the press-cutting box 2 corresponding to the second filter plate 14, when a large amount of sundries are accumulated on the second filter plate through manual observation, the slag pushing cylinder 17, the large tooth crushing roller group 11 power motor and the small tooth crushing roller group 12 power motor are manually opened, and hard solid sundries are returned to the separation box 1 to be crushed.

The utility model discloses a working process does:

after the domestic sewage of the hospital is converged into the sewage extraction well, the domestic sewage is firstly separated and crushed in the pretreatment device, and then is lifted to a drainage pipe network of the hospital through a sewage pump and sent to a sewage treatment station for treatment.

Domestic sewage enters the separation box from the water inlet, falls into the first filter plate under the action of gravity, slowly inclines and descends along the first filter plate, most of liquid sewage leaks through the grids or the grids, and flows to the bottom of the separation box after converging into the launder along the outer wall of the water-proof cover; the unseparated solid sundries and part of liquid sewage are pushed into the press-cutting box under the action of gravity and fall onto the second filter plate.

The press-cutting cylinder continuously applies work to drive the press-cutting plate to move up and down repeatedly to extrude solid sundries on the second filter plate, and soft solid sundries deform under the extrusion action, fall into the bottom of the press-cutting box along the grids of the second filter plate and then return to the bottom of the separation box through the discharge hole; hard solid sundries cannot be deformed under the extrusion action and are left on the second filter plate, the hard solid sundries are pushed to a crushing mechanism in the separation box in batches through a slag pushing mechanism doing work in a gap mode, the hard solid sundries are crushed in a double mode on the crushing mechanism to be crushed into hard solid particles about 1cm, the hard solid particles also fall into the bottom of the separation box and are mixed with liquid sewage and soft solid particles, and the mixture is discharged after entering a drain pipe along a guide groove under the action of a sewage pump.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims (6)

1. The utility model provides a broken type hospital domestic sewage pretreatment device which characterized in that: the device comprises a separation box (1) and a press-cutting box (2) which is arranged on one side of the separation box (1) side by side, wherein the separation box (1) is communicated with the press-cutting box (2) through three through openings, namely a feed inlet (3), a slag feed opening (4) and a discharge opening (5), from top to bottom; a water inlet (7) is formed in the top of the separation box (1), a water outlet is formed in the bottom of the separation box, an inverted U-shaped water-proof cover (8) is arranged in the middle of the separation box (1), and a water flowing groove for sewage to flow into the bottom of the separation box (1) is formed between the left side wall and the right side wall of the water-proof cover (8) and the corresponding side wall of the separation box (1); a first filter plate (9) is arranged above the water-proof cover (8), and the tail end of the first filter plate (9) penetrates through the feed port (3); the slag conveying opening (4) is arranged below the water-proof cover (8), and a crushing mechanism for crushing hard solid impurities is also arranged below the water-proof cover (8);

a second filter plate (14) is arranged in the press-cutting box (2), one side, close to the separation box (1), of the second filter plate (14) is communicated with the slag feeding port (4), a press-cutting plate (18) capable of being pressed and cut up and down in a reciprocating manner under the driving of a press-cutting cylinder (20) is arranged above the second filter plate (14), and the second filter plate (14) and the press-cutting plate (18) are both grid plates; and a slag pushing mechanism for pushing hard solid impurities into the crushing mechanism is also arranged in the pressing and cutting box (2).

2. The crushing type pretreatment device for hospital domestic sewage according to claim 1, wherein: the first filter plate (9) is a grid plate or a grid plate which is obliquely arranged, the high end of the first filter plate is correspondingly arranged below the water inlet (7), and the low end of the first filter plate penetrates through the feed inlet (3).

3. The crushing type pretreatment device for hospital domestic sewage according to claim 2, characterized in that: the front end of the first filter plate (9) is provided with a bent filter plate (10) which inclines upwards.

4. The crushing type pretreatment device for hospital domestic sewage according to claim 1, wherein: the crushing mechanism comprises a large-tooth crushing roller set (11) and a small-tooth crushing roller set (12) arranged below the large-tooth crushing roller set (11), and the transverse total width of the small-tooth crushing roller set (12) is not smaller than that of the large-tooth crushing roller set (11).

5. The crushing type pretreatment device for hospital domestic sewage according to claim 1, characterized in that: the slag pushing mechanism comprises a pushing plate (15) with the bottom abutted to the upper end face of the second filter plate (14), the rear end of the pushing plate (15) is connected with a pushing rod (16), and the pushing rod (16) penetrates through the side wall of the press-cutting box (2) and then is connected with a slag pushing cylinder (17).

6. The crushing type pretreatment device for hospital domestic sewage according to claim 1, wherein: the bottom of the pressing and cutting box (2) is in an inclined shape pointing to the discharge hole (5).

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