CN216778052U

CN216778052U - Sand removing filter

Info

Publication number: CN216778052U
Application number: CN202122863126.XU
Authority: CN
Inventors: 严家琪; 陈志平
Original assignee: Jiangsu Rongchuang Environmental Protection Technology Co ltd
Current assignee: Jiangsu Rongchuang Environmental Protection Technology Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-06-21
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a desanding filter, which comprises a shell, a cover plate, a partition plate, a primary sand filtering net and a secondary sand filtering net, wherein the cover plate is arranged on the shell; a cover plate is horizontally arranged on the upper surface of the shell, and the cover plate and the shell are connected into a hollow cuboid structure in a screwed mode; a partition plate is vertically and longitudinally arranged in the middle of the lower surface of the cover plate, and the inside of the shell is divided into a desanding chamber and a water outlet chamber from left to right through the partition plate; a water inlet pipe communicated with the desanding chamber is vertically arranged on the left side of the upper surface of the cover plate, and a water outlet pipe communicated with the water outlet chamber is vertically arranged on the right side of the upper surface of the cover plate; the horizontal parallel of interval level is equipped with one-level sand screen and second grade sand screen from top to bottom in the degritting room, and one-level sand screen and second grade sand screen are respectively with horizontal sliding connection of casing to support tightly respectively on the left surface of baffle, carry out the two-stage degritting to the fire water that gets into in the degritting room, the fire water after the degritting flows into out the hydroecium through the clearance between baffle and the casing bottom surface, discharges through the outlet pipe again. The utility model realizes two-stage desanding and effectively increases the filtering effect.

Description

Sand removing filter

Technical Field

The utility model relates to a filter, in particular to a sand removing filter.

Background

Fire control eliminates the prevention promptly and suffers from, prevents and solves people's artificial and natural, the general name of accidental calamities that meets in life, work, learning promptly, and fire engine or fire control pipeline are putting out the conflagration when putting out, usually will fire control rivers spray and put out a fire in the open fire region, for improving the scope that rivers sprayed, generally can install the fire-fighting lance on fire-fighting water pipe, improve the distance that rivers sprayed. At present, behind the fire water pipe that flows into from fire water pitcher or fire control water supply pipe, owing to lack necessary filtration equipment, lead to grit and impurity that mix with in the rivers can flow into the fire-fighting lance along with the rivers in, lead to the jam of fire-fighting lance easily, seriously influence the work of putting out of conflagration, cause loss of property's impaired or casualties of personnel. Therefore, the above problems need to be solved.

Disclosure of Invention

The utility model aims to provide a sand removing filter, which is used for removing sand in two stages by arranging a first-stage sand filtering net and a second-stage sand filtering net, thereby effectively increasing the filtering effect, preventing the fire water pipe from being blocked when in use and improving the working efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model discloses a desanding filter, which has the innovation points that: comprises a shell, a cover plate, a clapboard, a primary sand filtering net and a secondary sand filtering net; a cover plate is horizontally attached to the upper surface of the horizontally arranged shell, and the cover plate and the shell are connected into a hollow cuboid structure in a screwed mode; a partition board matched with the inside of the shell is vertically and longitudinally arranged in the middle of the lower surface of the cover plate, and the inside of the shell is divided into a desanding chamber and a water outlet chamber from left to right through the partition board; a water inlet pipe which is hermetically communicated with the desanding chamber is also vertically arranged on the left side of the upper surface of the cover plate, and a water outlet pipe which is hermetically communicated with the water outlet chamber is also vertically arranged on the right side of the upper surface of the cover plate; the horizontal parallel of intermediate position upper and lower interval about in the degritting room still is equipped with degritting room assorted one-level sand screen and second grade sand screen, one-level sand screen and second grade sand screen respectively with horizontal sliding connection of casing to support tightly respectively on the left surface of baffle, carry out the two-stage degritting to the fire water that gets into in the degritting room, the fire water after the degritting flows into out the water chamber through the clearance between baffle and the casing bottom surface, discharges through the outlet pipe again.

Preferably, the front end face and the rear end face of the partition plate are respectively in sealing fit with the corresponding inner side walls of the shell, the lower surface of the partition plate vertically extends downwards towards the inner bottom surface of the shell and is not in contact with the inner bottom surface of the shell, and a channel for communicating the desanding chamber with the water outlet chamber is formed.

Preferably, the lower end of the water inlet pipe vertically extends downwards to the inside of the shell and is communicated with the desanding chamber in a sealing way; the upper end of the water inlet pipe is also sleeved with a first connecting flange and is in sealed screwed connection and communication with a fire-fighting water tank or a fire-fighting water supply pipeline through the first connecting flange; the water inlet pipe is also fixedly provided with a first electromagnetic valve, and the first electromagnetic valve is arranged between the first connecting flange and the cover plate and controls the on-off of the water inlet pipe.

Preferably, the lower end of the water outlet pipe vertically extends downwards to the middle position inside the shell, and is communicated with the water outlet chamber in a sealing way, and a water pump is fixedly arranged in the middle of the water outlet pipe; the lower end of the water outlet pipe is also coaxially provided with a horn-shaped water inlet, the upper end of the water inlet is a small-diameter end and is hermetically communicated with the water outlet pipe through a flange, the lower end of the water inlet is a large-diameter end, and fire water subjected to sand removal and filtration in the water outlet chamber is pumped out through the water outlet pipe through a water pump; and the upper end of the water outlet pipe is also sleeved with a second connecting flange and is communicated with the fire-fighting lance in a sealing and screwed manner through the second connecting flange.

Preferably, the device further comprises a reinforcing plate; a reinforcing plate is horizontally arranged between the water outlet pipe and the partition plate, and the reinforcing plate and the water pump are arranged without mutual interference; the reinforcing plate is horizontally arranged in the water outlet chamber, and the two ends of the reinforcing plate are respectively fixed with the right side surface of the partition plate and the outer surface of the water outlet pipe in a sealing and screwed mode at corresponding positions, so that the water outlet pipe is reinforced and fixed.

Preferably, a liquid discharge pipe is further vertically embedded and communicated at the bottom end of the right outer side wall of the shell, and the left end of the liquid discharge pipe horizontally and vertically extends into the shell and is communicated with the water outlet chamber in a sealing manner; the right end of the liquid discharge pipe is also sleeved with a sealing cover, the sealing cover is matched with the liquid discharge pipe, and the sealing cover and the liquid discharge pipe are in sealing threaded connection; a second electromagnetic valve is fixedly arranged on the liquid discharge pipe, is arranged between the sealing cover and the shell and controls the on-off of the liquid discharge pipe; the inner bottom surface of the shell is also obliquely provided with guide plates matched with the shell, the guide plates are horizontally obliquely arranged below the partition plate at intervals, and the inclination angle of the guide plates is 3-5 degrees; the lower end of the guide plate is tightly abutted in a sealing manner at the lower port of the left end of the liquid discharge pipe, and the upper end of the guide plate extends upwards in an inclined manner in the direction far away from the liquid discharge pipe and is connected with the left inner side wall of the shell in a sealing manner after penetrating through the channel; the guide plate is arranged below the secondary sand filtering net, a filter screen is vertically and longitudinally arranged between the partition plate and the guide plate, the filter screen is matched with a space enclosed by the inner side wall of the shell, the partition plate and the guide plate, and the upper end of the filter screen is fixedly connected with the lower surface of the partition plate in a threaded manner; the lower extreme of filter screen vertical downwardly extending extremely the inside of guide plate, and with the sealed joint of guide plate is filtered once more to the fire water after the desanding that flows into out the hydroecium by the desanding room.

Preferably, the device also comprises a buffer tank and a transverse plate; a horn-shaped buffer box is further horizontally and fixedly attached to the left side of the lower surface of the cover plate, is arranged in the desanding chamber, is provided with a small-diameter end at the upper end, and is communicated with the lower end of the water inlet pipe in a sealing manner; a plurality of transverse plates are horizontally arranged in the buffer box in a staggered manner at intervals from top to bottom in parallel, each transverse plate is matched with the corresponding position in the buffer box, the length of each transverse plate is three fourths of the length of the corresponding position in the buffer box, the left end surface of each transverse plate arranged close to the left side is fixedly connected with the left inner side wall of the buffer box, and the right end surface of each transverse plate arranged close to the right side is fixedly connected with the right inner side wall of the buffer box; the buffer boxes are arranged right above the primary sand screen at intervals, and the large-diameter ends of the buffer boxes are arranged right opposite to the primary sand screen; fire water enters the buffer tank through the water inlet pipe, is buffered and decelerated through the transverse plate and then flows into the first-stage sand filtering net for sand removal.

Preferably, a first fixed block is horizontally arranged on the left side surface of the primary sand filtering net, and the first fixed block is of a cuboid structure matched with the primary sand filtering net; the right side surface of the first fixed block is fixedly connected with the left side surface of the primary sand filtering net, and the left side surface of the first fixed block horizontally extends out of the outer side surface of the shell; first limiting plates are horizontally and symmetrically arranged on the upper side and the lower side of the part, exceeding the shell, of the first fixing block, each first limiting plate is of a rectangular structure, and the right end face of each first limiting plate is fixedly connected with the outer side face of the shell; a first pin shaft is also vertically arranged in the middle of the upper surface of the upper first limiting plate, the lower end of the first pin shaft vertically and downwards sequentially penetrates through the upper first limiting plate, the first fixing block and the lower first limiting plate, and the primary sand screen is limited in the horizontal direction; a first sealing gasket is horizontally and fixedly arranged at the joint of the first fixing block and the shell, is of a hollow cuboid structure matched with the first fixing block, and is fixedly connected with the shell in an embedded manner; the left side face of the first fixing block is also vertically provided with a first handle, and the first handle and the two first limiting plates are arranged in a mutually-noninterfere mode.

Preferably, a second fixed block is horizontally arranged on the left side surface of the secondary sand filtering net, and the second fixed block is of a cuboid structure matched with the secondary sand filtering net; the right side surface of the second fixed block is fixedly connected with the left side surface of the secondary sand filtering net, and the left side surface of the second fixed block horizontally extends out of the outer side surface of the shell; second limiting plates are horizontally and symmetrically arranged on the upper side and the lower side of the part, exceeding the shell, of the second fixing block, each second limiting plate is of a rectangular structure, and the right end face of each second limiting plate is fixedly connected with the outer side face of the shell; a second pin shaft is also vertically arranged in the middle of the upper surface of the upper second limiting plate, the lower end of the second pin shaft vertically and downwards sequentially penetrates through the upper second limiting plate, the second fixing block and the lower second limiting plate, and the secondary sand screen is limited in the horizontal direction; a second sealing gasket is horizontally and fixedly arranged at the joint of the second fixing block and the shell, is of a hollow cuboid structure matched with the second fixing block, and is fixedly connected with the shell in an embedded manner; the left side of the second fixed block is also vertically provided with a second handle, and the second handle and the two second limiting plates are arranged without interfering with each other.

Preferably, the liquid level meter further comprises a first liquid level meter and a second liquid level meter; a first liquid level meter is further arranged on the upper portion of the left inner side wall of the shell, is arranged on the upper portion of the horizontal plane where the large-diameter end of the buffer box is located, and is electrically connected with the first electromagnetic valve; and a second liquid level meter is further arranged in the middle of the right inner side wall of the shell and is arranged at the upper position of the horizontal plane where the large-diameter end of the water inlet is located and electrically connected with the water pump.

The utility model has the beneficial effects that:

(1) the primary sand filtering net and the secondary sand filtering net are arranged to perform two-stage sand removal, so that the filtering effect is effectively increased, the phenomenon of blockage when the fire hose is used is prevented, and the working efficiency is improved;

(2) after the pin shaft is taken out, the sand screen can be pulled out of the shell through the handle, so that the sand screen is convenient to clean and replace, and the working efficiency is improved;

(3) according to the utility model, the guide plate is arranged, so that the fire water subjected to sand removal in the sand removal chamber can be conveniently drained to the water outlet chamber, and the fire water is filtered again in the drainage process, so that the working efficiency is improved;

(4) the utility model has good buffering effect on fire water entering the desanding chamber by matching the buffer box and the transverse plate, thereby avoiding the influence on the desanding effect of the sand screen due to larger impact force of the fire water.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a sand removing filter according to the present invention.

Wherein, 1-shell; 2-cover plate; 3-water inlet pipe; 4-a first solenoid valve; 5-a first connecting flange; 6-a buffer tank; 7-a transverse plate; 8-water outlet pipe; 9-a second connecting flange; 10-a separator; 11-a reinforcement plate; 12-a water pump; 13-a water inlet; 14-a filter screen; 15-a baffle; 16-a primary sand screen; 17-a first fixing block; 18-a first limiting plate; 19-a first pin; 20-a first handle; 21-a secondary sand filtering net; 22-a second fixed block; 23-a second limiting plate; 24-a second pin; 25-a second handle; 26-a drain pipe; 27-a second solenoid valve; 28-sealing cover; 29-self-locking rollers; 30-a first level gauge; 31-second level gauge.

Detailed Description

The technical solution of the present invention will be clearly and completely described by the following embodiments.

The utility model relates to a desanding filter, which comprises a shell 1, a cover plate 2, a partition plate 10, a primary sand filtering net 16 and a secondary sand filtering net 21, wherein the shell is provided with a plurality of through holes; the structure is as shown in figure 1, a cover plate 2 is horizontally attached to the upper surface of a horizontally arranged shell 1, and the cover plate and the shell are connected into a hollow cuboid structure in a screwed mode; a partition plate 10 matched with the interior of the shell 1 is vertically and longitudinally arranged in the middle of the lower surface of the cover plate 2, and the interior of the shell 1 is divided into a desanding chamber and a water outlet chamber from left to right through the partition plate 10; the front and rear end faces of the partition plate 10 are respectively in sealing fit with the corresponding inner side walls of the shell 1, the lower surface of the partition plate vertically extends downwards towards the inner bottom surface of the shell 1 and is not in contact with the inner bottom surface of the shell 1, and a channel for communicating the desanding chamber with the water outlet chamber is formed.

As shown in fig. 1, a water inlet pipe 3 which is hermetically communicated with the desanding chamber is also vertically arranged on the left side of the upper surface of the cover plate 2, and the lower end of the water inlet pipe 3 vertically extends downwards to the inside of the shell 1 and is hermetically communicated with the desanding chamber; the upper end of the water inlet pipe 3 is also sleeved with a first connecting flange 5 and is in sealed threaded connection with a fire-fighting water tank or a fire-fighting water supply pipeline through the first connecting flange 5; still be fixed on inlet tube 3 and be equipped with first solenoid valve 4, and first solenoid valve 4 locates between first flange 5 and the apron 2 to the break-make of control inlet tube 3.

As shown in fig. 1, a water outlet pipe 8 which is hermetically communicated with the water outlet chamber is vertically arranged on the right side of the upper surface of the cover plate 2, the lower end of the water outlet pipe 8 vertically extends downwards to the middle position in the shell 1 and is hermetically communicated with the water outlet chamber, and a water pump 12 is fixedly arranged in the middle of the water outlet pipe; a horn-shaped water inlet 13 is coaxially arranged at the lower end of the water outlet pipe 8, the upper end of the water inlet 13 is a small-diameter end and is hermetically communicated with the water outlet pipe 8 through a flange, the lower end of the water inlet 13 is a large-diameter end, and fire water subjected to sand removal and filtration in the water outlet chamber is pumped out through the water outlet pipe 8 through a water pump 12; the upper end of the water outlet pipe 8 is also sleeved with a second connecting flange 9 and is communicated with the fire-fighting lance in a sealing and screwed manner through the second connecting flange 9. Wherein, a reinforcing plate 11 is horizontally arranged between the water outlet pipe 8 and the partition plate 10, and the reinforcing plate 11 and the water pump 12 are arranged without mutual interference; the reinforcing plate 11 is horizontally arranged in the water outlet chamber, and two ends of the reinforcing plate are respectively fixed with the right side surface of the partition plate 10 and the outer surface of the water outlet pipe 8 in a sealing and screwed mode, so that the water outlet pipe 8 is reinforced and fixed.

The utility model also horizontally arranges a first-stage sand screen 16 and a second-stage sand screen 21 which are matched with the desanding chamber at the middle position in the desanding chamber at intervals up and down, the first-stage sand screen 16 and the second-stage sand screen 21 are respectively horizontally and transversely connected with the shell 1 in a sliding way and respectively tightly propped against the left side surface of the clapboard 10, so as to carry out two-stage desanding on the fire water entering the desanding chamber, and the desanded fire water flows into a water outlet chamber through a gap between the clapboard 10 and the inner bottom surface of the shell 1 and is discharged through a water outlet pipe 8; as shown in fig. 1, a first fixing block 17 is horizontally arranged on the left side surface of the primary sand screen 16, and the first fixing block 17 is a cuboid structure matched with the primary sand screen 16; the right side surface of the first fixed block 17 is fixedly connected with the left side surface of the first-stage sand filtering net 16, and the left side surface horizontally extends out of the outer side surface of the shell 1; first limiting plates 18 are horizontally and symmetrically arranged on the upper side and the lower side of the part, exceeding the shell 1, of the first fixing block 17, each first limiting plate 18 is of a rectangular structure, and the right end face of each first limiting plate 18 is fixedly connected with the outer side face of the shell 1; a first pin shaft 19 is also vertically arranged in the middle of the upper surface of the upper first limit plate 18, the lower end of the first pin shaft 19 vertically and downwards sequentially penetrates through the upper first limit plate 18, the first fixed block 17 and the lower first limit plate 18, and the first-stage sand screen 16 is limited in the horizontal direction;

as shown in fig. 1, a first sealing gasket is further horizontally and fixedly arranged at the joint of the first fixing block 17 and the housing 1, the first sealing gasket is of a hollow cuboid structure matched with the first fixing block 17 and is fixedly connected with the housing 1 in an embedded manner, so that the housing 1 is ensured not to leak water; the left side surface of the first fixing block 17 is also vertically provided with a first handle 20, and the first handle 20 and the two first limiting plates 18 are arranged without interfering with each other, so that the first-stage sand screen 16 can be conveniently pulled.

The left side surface of the secondary sand filtering net 21 is also horizontally provided with a second fixed block 22, and the second fixed block 22 is of a cuboid structure matched with the secondary sand filtering net 21; as shown in fig. 1, the right side surface of the second fixed block 22 is fixedly connected with the left side surface of the second-stage sand screen 21, and the left side surface horizontally extends out of the outer side surface of the housing 1; second limiting plates 23 are horizontally and symmetrically arranged on the upper side and the lower side of the part, exceeding the shell 1, of the second fixed block 22, each second limiting plate 23 is of a rectangular structure, and the right end face of each second limiting plate 23 is fixedly connected with the outer side face of the shell 1; a second pin shaft 24 is also vertically arranged in the middle of the upper surface of the upper second limiting plate 23, the lower end of the second pin shaft 24 vertically and downwards sequentially penetrates through the upper second limiting plate 23, the second fixing block 22 and the lower second limiting plate 23, and the secondary sand screen 21 is limited in the horizontal direction;

as shown in fig. 1, a second sealing gasket is further horizontally and fixedly arranged at the joint of the second fixing block 22 and the housing 1, and the second sealing gasket is of a hollow cuboid structure matched with the second fixing block 22 and fixedly connected with the housing 1 in an embedded manner, so that the housing 1 is ensured not to leak water; still be equipped with second handle 25 perpendicularly at the left surface of second fixed block 22, and second handle 25 and two second limiting plate 23 mutually noninterfere settings to be convenient for carry out the pull action to second grade sand screen 21.

The bottom end of the right outer side wall of the shell 1 is also vertically embedded and communicated with a liquid discharge pipe 26, and the left end of the liquid discharge pipe 26 horizontally and vertically extends into the shell 1 and is communicated with a water outlet chamber in a sealing way; as shown in fig. 1, a sealing cover 28 is sleeved at the right end of the drain pipe 26, the sealing cover 28 is matched with the drain pipe 26, and the sealing cover and the drain pipe are in threaded connection; a second solenoid valve 27 is also fixed to the drain pipe 26, and the second solenoid valve 27 is provided between the seal cap 28 and the housing 1 and controls the opening and closing of the drain pipe 26.

As shown in fig. 1, a guide plate 15 matched with the inner bottom surface of the shell 1 is further obliquely arranged on the inner bottom surface of the shell, the guide plate 15 is horizontally obliquely arranged below the partition plate 10 at intervals, and the inclination angle is 3-5 degrees; the lower end of the guide plate 15 is tightly propped against the lower port of the left end of the liquid discharge pipe 26 in a sealing manner, and the upper end of the guide plate extends upwards in an inclined manner in the direction away from the liquid discharge pipe 26 and is connected with the left inner side wall of the shell 1 in a sealing manner after penetrating through the channel; the guide plate 15 is arranged below the secondary sand filtering net 21, a filtering net 14 is vertically and longitudinally arranged between the partition plate 10 and the guide plate 15, the filtering net 14 is matched with a space defined by the inner side wall of the shell 1, the partition plate 10 and the guide plate 15, and the upper end of the filtering net 14 is fixedly connected with the lower surface of the partition plate 10 in a threaded manner; the lower end of the filter screen 14 vertically extends downwards to the inside of the guide plate 15, and is in sealing clamping connection with the guide plate 15, so that the fire water which flows into the water outlet chamber from the desanding chamber and is subjected to desanding is filtered again.

The left side of the lower surface of the cover plate 2 is also horizontally and fixedly provided with a horn-shaped buffer box 6 in an attaching manner, as shown in figure 1, the buffer box 6 is arranged in a desanding chamber, the upper end of the buffer box is a small-diameter end, and the buffer box is communicated with the lower end of a water inlet pipe 3 in a sealing manner; a plurality of transverse plates 7 are horizontally arranged in parallel from top to bottom at intervals in a staggered manner in the buffer box 6, each partition plate 10 is matched with the corresponding position in the buffer box 6, the length of each partition plate is three quarters of the length of the corresponding position in the buffer box 6, the left end surface of each partition plate 10 arranged close to the left side is fixedly connected with the left inner side wall of the buffer box 6, and the right end surface of each partition plate 10 arranged close to the right side is fixedly connected with the right inner side wall of the buffer box 6; wherein, the buffer boxes 6 are arranged above the first-stage sand screen 16 at intervals, and the large-diameter ends of the buffer boxes are arranged opposite to the first-stage sand screen 16; fire water enters the buffer tank 6 through the water inlet pipe 3, is buffered and decelerated through the transverse plate 7, and then flows into the first-stage sand filtering net 16 for sand removal, so that the sand removal effect of the sand filtering net is prevented from being influenced due to large impact force of the fire water.

As shown in fig. 1, a first liquid level meter 30 is further arranged on the upper portion of the left inner side wall of the shell 1, and the first liquid level meter 30 is arranged on the upper portion of the horizontal plane where the large-diameter end of the buffer tank 6 is located and is electrically connected with the first electromagnetic valve 4; when the first liquid level meter 30 detects fire water, it indicates that the first-stage sand screen 16 or the second-stage sand screen 21 cannot remove sand from the fire water in time and needs to be cleaned or replaced.

As shown in fig. 1, a second liquid level meter 31 is further disposed at a middle position of a right inner side wall of the housing 1, and the second liquid level meter 31 is disposed at a position above a horizontal plane where a large diameter end of the water inlet 13 is located and electrically connected to the water pump 12. When the second liquid level meter 31 detects fire water, it indicates that the fire water subjected to sand removal and filtration in the water outlet chamber can be used, and at the moment, the fire water subjected to sand removal and filtration is pumped out through the water outlet pipe 8 by the water pump 12.

As shown in fig. 1, self-locking rollers 29 are also vertically and symmetrically arranged at four right angles below the lower surface of the housing 1, so that the sand removing filter of the present invention can be conveniently moved to the corresponding fire-fighting water tank or fire-fighting water supply pipeline through the self-locking rollers 29.

The working principle of the utility model is as follows:

(1) firstly, a water inlet pipe 3 is in sealed screwed connection with a fire-fighting water tank or a fire-fighting water supply pipeline through a first connecting flange 5, and a water outlet pipe 8 is in sealed screwed connection with a fire-fighting water gun through a second connecting flange 9;

(2) then fire-fighting water enters a buffer tank 6 through a water inlet pipe 3, is buffered and decelerated through a transverse plate 7, then flows into a first-stage sand filtering net 16 and a second-stage sand filtering net 21 to perform two-stage sand removal, is then drained into a water outlet chamber through a guide plate 15, and is filtered again through a filter screen 14 in the process; when the second liquid level meter 31 detects fire water, the water pump 12 starts to work, and the fire water after sand removal and filtration is pumped out through the water outlet pipe 8;

(3) when the first liquid level meter 30 detects fire water, it indicates that the first-stage sand screen 16 or the second-stage sand screen 21 cannot remove sand from the fire water in time and needs to be cleaned or replaced; at this time, the first electromagnetic valve 4 is closed, the first pin shaft 19 and the second pin shaft 24 are respectively taken down, and the first-stage sand screen 16 and the second-stage sand screen 21 can be respectively pulled out for cleaning or replacement; at the same time, water is introduced from the water inlet pipe 3 to clean the interior of the housing 1, and waste water is discharged from the drain pipe 26.

The utility model has the beneficial effects that:

(1) the primary sand filtering net 16 and the secondary sand filtering net 21 are arranged to perform two-stage sand removal, so that the filtering effect is effectively increased, the phenomenon of blockage of the fire hose during use is prevented, and the working efficiency is improved;

(2) after the pin shaft is taken out, the sand screen can be pulled out of the shell 1 through the handle, so that the sand screen is convenient to clean and replace, and the working efficiency is improved;

(3) according to the utility model, the guide plate 15 is arranged, so that the fire water subjected to sand removal in the sand removal chamber can be conveniently drained to the water outlet chamber, and the fire water is filtered again in the drainage process, so that the working efficiency is improved;

(4) according to the utility model, the buffer tank 6 and the transverse plate 7 are matched for use, so that a good buffer effect is achieved on fire water entering a desanding chamber, and the desanding effect of the sand screen is prevented from being influenced by large impact force of the fire water.

The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.

Claims

1. A desanding filter is characterized in that: comprises a shell, a cover plate, a clapboard, a primary sand filtering net and a secondary sand filtering net; a cover plate is horizontally attached to the upper surface of the horizontally arranged shell, and the cover plate and the shell are connected into a hollow cuboid structure in a screwed mode; a partition board matched with the inside of the shell is vertically and longitudinally arranged in the middle of the lower surface of the cover plate, and the inside of the shell is divided into a desanding chamber and a water outlet chamber from left to right through the partition board; a water inlet pipe which is hermetically communicated with the desanding chamber is also vertically arranged on the left side of the upper surface of the cover plate, and a water outlet pipe which is hermetically communicated with the water outlet chamber is also vertically arranged on the right side of the upper surface of the cover plate; the horizontal parallel of intermediate position interval about still in the degritting room assorted one-level sand screen and second grade sand screen, one-level sand screen and second grade sand screen respectively with the horizontal sliding connection of casing to support tightly respectively on the left surface of baffle, carry out the two-stage degritting to the fire water that gets into in the degritting room, fire water after the degritting flows into out the water room through the clearance between baffle and the casing bottom surface, discharges through the outlet pipe again.

2. A sand removal filter as claimed in claim 1, wherein: the front end surface and the rear end surface of the partition plate are respectively in sealing fit with the corresponding inner side walls of the shell, the lower surface of the partition plate vertically extends downwards towards the inner bottom surface of the shell and is not in contact with the inner bottom surface of the shell, and a channel for communicating the desanding chamber with the water outlet chamber is formed.

3. A sand removal filter as claimed in claim 1, wherein: the lower end of the water inlet pipe vertically extends downwards to the inside of the shell and is communicated with the desanding chamber in a sealing way; the upper end of the water inlet pipe is also sleeved with a first connecting flange and is in sealed screwed connection and communication with a fire-fighting water tank or a fire-fighting water supply pipeline through the first connecting flange; the water inlet pipe is also fixedly provided with a first electromagnetic valve, and the first electromagnetic valve is arranged between the first connecting flange and the cover plate and controls the on-off of the water inlet pipe.

4. A sand removal filter as claimed in claim 3, wherein: the lower end of the water outlet pipe vertically extends downwards to the middle position inside the shell, and is communicated with the water outlet chamber in a sealing way, and a water pump is fixedly arranged in the middle of the water outlet pipe; the lower end of the water outlet pipe is also coaxially provided with a horn-shaped water inlet, the upper end of the water inlet is a small-diameter end and is hermetically communicated with the water outlet pipe through a flange, the lower end of the water inlet is a large-diameter end, and fire water subjected to sand removal and filtration in the water outlet chamber is pumped out through the water outlet pipe through a water pump; and the upper end of the water outlet pipe is also sleeved with a second connecting flange and is communicated with the fire-fighting lance in a sealing and screwed manner through the second connecting flange.

5. A sand removal filter as claimed in claim 4, wherein: the device also comprises a reinforcing plate; a reinforcing plate is horizontally arranged between the water outlet pipe and the partition plate, and the reinforcing plate and the water pump are arranged without mutual interference; the reinforcing plate is horizontally arranged in the water outlet chamber, and the two ends of the reinforcing plate are respectively fixed with the right side surface of the partition plate and the outer surface of the water outlet pipe in a sealing and screwed mode at corresponding positions, so that the water outlet pipe is reinforced and fixed.

6. A sand removal filter as claimed in claim 2, wherein: a liquid discharge pipe is also vertically embedded and communicated at the bottom end of the right outer side wall of the shell, and the left end of the liquid discharge pipe horizontally and vertically extends into the shell and is communicated with the water outlet chamber in a sealing way; the right end of the liquid discharge pipe is also sleeved with a sealing cover, the sealing cover is matched with the liquid discharge pipe, and the sealing cover and the liquid discharge pipe are in sealing threaded connection; a second electromagnetic valve is fixedly arranged on the liquid discharge pipe, is arranged between the sealing cover and the shell and controls the on-off of the liquid discharge pipe; the inner bottom surface of the shell is also obliquely provided with guide plates matched with the shell, the guide plates are horizontally obliquely arranged below the partition plate at intervals, and the inclination angle of the guide plates is 3-5 degrees; the lower end of the guide plate is tightly abutted in a sealing manner at the lower port of the left end of the liquid discharge pipe, and the upper end of the guide plate extends upwards in an inclined manner in the direction far away from the liquid discharge pipe and is connected with the left inner side wall of the shell in a sealing manner after penetrating through the channel; the guide plate is arranged below the secondary sand filtering net, a filter screen is vertically and longitudinally arranged between the partition plate and the guide plate, the filter screen is matched with a space enclosed by the inner side wall of the shell, the partition plate and the guide plate, and the upper end of the filter screen is fixedly connected with the lower surface of the partition plate in a threaded manner; the lower extreme of filter screen vertical downwardly extending extremely the inside of guide plate, and with the sealed joint of guide plate is filtered once more to the fire water after the desanding that flows into out the hydroecium by the desanding room.

7. A sand removal filter as claimed in claim 4, wherein: the device also comprises a buffer box and a transverse plate; a horn-shaped buffer box is horizontally and fixedly attached to the left side of the lower surface of the cover plate, is arranged in the desanding chamber, is provided with a small-diameter end at the upper end and is communicated with the lower end of the water inlet pipe in a sealing manner; a plurality of transverse plates are horizontally arranged in the buffer box in a staggered manner at intervals from top to bottom in parallel, each transverse plate is matched with the corresponding position in the buffer box, the length of each transverse plate is three fourths of the length of the corresponding position in the buffer box, the left end surface of each transverse plate arranged close to the left side is fixedly connected with the left inner side wall of the buffer box, and the right end surface of each transverse plate arranged close to the right side is fixedly connected with the right inner side wall of the buffer box; the buffer boxes are arranged right above the primary sand screen at intervals, and the large-diameter ends of the buffer boxes are arranged right opposite to the primary sand screen; fire water enters the buffer tank through the water inlet pipe, is buffered and decelerated through the transverse plate and then flows into the first-stage sand filtering net for sand removal.

8. A sand removal filter as claimed in claim 1, wherein: a first fixed block is horizontally arranged on the left side surface of the primary sand filtering net and is of a cuboid structure matched with the primary sand filtering net; the right side surface of the first fixed block is fixedly connected with the left side surface of the primary sand filtering net, and the left side surface of the first fixed block horizontally extends out of the outer side surface of the shell; first limiting plates are horizontally and symmetrically arranged on the upper side and the lower side of the part, exceeding the shell, of the first fixing block, each first limiting plate is of a rectangular structure, and the right end face of each first limiting plate is fixedly connected with the outer side face of the shell; a first pin shaft is also vertically arranged in the middle of the upper surface of the upper first limiting plate, the lower end of the first pin shaft vertically and downwards sequentially penetrates through the upper first limiting plate, the first fixing block and the lower first limiting plate, and the primary sand screen is limited in the horizontal direction; a first sealing gasket is horizontally and fixedly arranged at the joint of the first fixing block and the shell, is of a hollow cuboid structure matched with the first fixing block, and is fixedly connected with the shell in an embedded manner; the left side face of the first fixing block is also vertically provided with a first handle, and the first handle and the two first limiting plates are arranged in a mutually-noninterfere mode.

9. A sand removal filter as claimed in claim 1, wherein: a second fixed block is horizontally arranged on the left side surface of the secondary sand filtering net and is of a cuboid structure matched with the secondary sand filtering net; the right side surface of the second fixed block is fixedly connected with the left side surface of the secondary sand filtering net, and the left side surface of the second fixed block horizontally extends out of the outer side surface of the shell; second limiting plates are horizontally and symmetrically arranged on the upper side and the lower side of the part, exceeding the shell, of the second fixing block, each second limiting plate is of a rectangular structure, and the right end face of each second limiting plate is fixedly connected with the outer side face of the shell; a second pin shaft is vertically arranged in the middle of the upper surface of the upper second limiting plate, the lower end of the second pin shaft vertically and downwards sequentially penetrates through the upper second limiting plate, the second fixing block and the lower second limiting plate, and the secondary sand screen is limited in the horizontal direction; a second sealing gasket is horizontally and fixedly arranged at the joint of the second fixing block and the shell, is of a hollow cuboid structure matched with the second fixing block, and is fixedly connected with the shell in an embedded manner; the left surface of the second fixed block is also perpendicularly provided with a second handle, and the second handle and the two second limiting plates are arranged without interference.

10. A sand removal filter as claimed in claim 7, wherein: the liquid level meter also comprises a first liquid level meter and a second liquid level meter; a first liquid level meter is further arranged on the upper portion of the left inner side wall of the shell, is arranged on the upper portion of the horizontal plane where the large-diameter end of the buffer box is located, and is electrically connected with the first electromagnetic valve; and a second liquid level meter is further arranged in the middle of the right inner side wall of the shell and is arranged at the upper part of the horizontal plane where the large-diameter end of the water inlet is located and electrically connected with the water pump.