Device for diluting external sludge

Abstract

The utility model belongs to the technical field of sludge treatment, and particularly relates to an external sludge diluting device which comprises a tank body, a partition plate I and a partition plate II are vertically and fixedly connected in the tank body, and the tank body is sequentially divided into a sludge diluting tank, a sludge dispersing tank and a sludge homogenizing tank through the partition plate I and the partition plate II. The top end of the second partition plate is lower than the top end of the first partition plate, a water passing hole is formed in the bottom end of the first partition plate, the sludge diluting tank is communicated with the sludge dispersing tank through the water passing hole, a water injection port and a sludge inlet are formed in the top end of the sludge diluting tank, and a sludge outlet is formed in the bottom of the sludge homogenizing tank. A dispersing and stirring device is arranged in the sludge dispersing tank, and a homogenizing and stirring device is arranged in the sludge homogenizing tank. The sludge and water continuous diluting and mixing device is compact in structure, reduces the occupied area, can realize continuous diluting and mixing of sludge and water, and simultaneously improves the diluting and mixing effect of the sludge and the water.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and in particular relates to a device for diluting external sludge. Background Art

[0002] With the large-scale construction of sewage treatment facilities in my country, the resulting sludge has become a new source of environmental pollution. The conventional treatment method in Chinese sewage treatment plants is to mechanically dehydrate the sludge in the sludge collection tank to an 80% moisture content, followed by deep dehydration to reduce the moisture content to below 50%. Sludge with an 80% moisture content has poor fluidity and high damping, making it difficult to transport directly to deep dehydration equipment through pipelines. Furthermore, the deep dehydration process typically requires diluting the sludge to achieve better fluidity to facilitate process automation.

[0003] Therefore, in order to facilitate subsequent deep dehydration treatment, the sludge needs to be diluted. Patent CN104230128A discloses a sludge dilution mixing tank, which consists of a tank body, a sludge pump, an air pipe, a fan, an air collecting hood, a sludge pipe, a submersible mixer, a straight high-pressure nozzle, an inclined high-pressure nozzle, etc. The invention adopts a sludge pump and a sludge pipeline to form a circulating liquid flow injection system. The sludge is transported to the dilution mixing tank body by the sludge pump, and the sludge is diluted and mixed with the water flow ejected from the high-pressure nozzle under the stirring action of the mixer. The high-pressure impact of the device is bound to affect the sludge properties and the life of the device. In addition, during the dilution process, the previous batch of sludge must be completely diluted and discharged before the next batch of feed dilution can be carried out. The functions of continuous feeding and continuous discharging cannot be achieved, and the working efficiency is low. Utility Model Content

[0004] The purpose of the utility model is to provide a device for diluting external sludge to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides a device for diluting external sludge, including a tank body, wherein a partition 1 and a partition 2 are vertically fixedly connected inside the tank body, and the tank body is divided into a sludge dilution tank, a sludge dispersion tank and a sludge homogenization tank in sequence by the partition 1 and the partition 2, and the top of the partition 2 is lower than the top of the partition 1, and a water hole is provided at the bottom end of the partition 1, and the sludge dilution tank is connected with the sludge dispersion tank through the water hole, the top of the sludge dilution tank is provided with a water injection port and a mud inlet, the bottom of the sludge homogenization tank is provided with a mud outlet, a sludge dilution stirring device is provided in the sludge dilution tank, a dispersion stirring device is provided in the sludge dispersion tank, and a homogenization stirring device is provided in the sludge homogenization tank.

[0006] Preferably, the sludge dilution and stirring device includes a motor 1 fixedly installed in the middle of the top of the sludge dilution tank, the output end of the motor 1 is fixedly connected to a stirring shaft, the stirring shaft extends into the sludge dilution tank, and a spiral stirring blade is fixedly wound around the stirring shaft.

[0007] Preferably, the dispersing and stirring device includes a motor 2 fixedly installed in the middle of the top of the sludge dispersion tank, the output shaft of the motor 2 is fixedly connected to a rotating shaft 1, the rotating shaft 1 extends into the sludge dispersion tank, and a plurality of groups of straight stirring blades 1 are fixedly connected along the axial direction of the rotating shaft 1, the number of the straight stirring blades 1 in each group is not less than one, and the straight stirring blades 1 in the same group are arranged at equal intervals along the circumference of the rotating shaft 1.

[0008] Preferably, the homogenizing stirring device includes a motor three fixedly installed in the middle of the top of the sludge homogenizing tank, the output shaft of the motor three is fixedly connected to the rotating shaft two, the rotating shaft two extends into the sludge homogenizing tank, and several groups of straight stirring blades two are fixedly connected along the axial direction of the rotating shaft two, the number of the straight stirring blades two in each group is not less than one, and the straight stirring blades two in the same group are arranged at equal intervals along the circumference of the rotating shaft two.

[0009] Preferably, an overflow port is fixedly provided on the side wall of the sludge dilution tank, and the overflow port is provided above the partition plate 1.

[0010] Preferably, a drain port is fixedly provided at the bottom of the side wall of the sludge dilution tank, and the drain port is provided corresponding to the water hole.

[0011] Preferably, a level meter is provided in the sludge homogenization tank, the level meter is electrically connected to a controller, the mud outlet is connected to a mud discharge pump, the water injection port is connected to a water injection pump through a water pipe, a flow meter is provided on the water pipe, the mud inlet is connected to a sludge lifting pump, and the mud discharge pump, the water injection pump, the flow meter and the sludge lifting pump are all electrically connected to the controller.

[0012] Compared with the prior art, the present invention has the following advantages and technical effects:

[0013] The utility model provides a device for diluting external sludge, which injects sludge and water into the sludge dilution tank in proportion and fully stirs it through the sludge dilution and stirring device to initially form a mud-water mixture, and the mud-water mixture gradually enters the sludge dispersion tank through the water hole, is further stirred by the dispersion and stirring device to form a mud-water suspension, and overflows into the homogenization tank through the second partition and is stirred by the homogenization stirring device. On the one hand, the sludge and water are mixed more evenly, and on the other hand, the sludge particles are prevented from settling, and are discharged in time through the mud outlet for subsequent processing.

[0014] The utility model has a compact structure, reduces floor space, can realize continuous dilution and mixing of sludge and water, and simultaneously improves the dilution and mixing effect of sludge and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work:

[0016] Figure 1 This is a front view of a device for diluting external sludge proposed by the utility model;

[0017] Figure 2 This is a top view of a device for diluting external sludge proposed in the utility model;

[0018] Among them: 1. Tank body; 101. Horizontal support channel steel; 102. Longitudinal support channel steel; 103. Motor support frame 1; 104. Motor support frame 2; 105. Motor support frame 3; 201. Water inlet; 202. Mud inlet; 203. Motor 1; 204. Overflow port; 205. Vent; 206. Partition 1; 207. Water hole; 208. Stirring shaft; 209. Ribbon stirring blade; 301. Motor 2; 302. Partition 2; 303. Rotating shaft 1; 304. Straight stirring blade 1; 401. Motor 3; 402. Level meter; 403. Mud outlet; 404. Rotating shaft 2; 405. Straight stirring blade 2. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Reference Figures 1 to 2As shown, the utility model provides a device for diluting external sludge, including a tank body 1, wherein a partition 1 206 and a partition 2 302 are vertically fixedly connected inside the tank body 1, and the tank body 1 is divided into a sludge dilution tank, a sludge dispersion tank and a sludge homogenization tank in sequence by the partition 1 206 and the partition 2 302, and the top of the partition 2 302 is lower than the top of the partition 1 206, and a water hole 207 is provided at the bottom of the partition 1 206. The sludge dilution tank is connected with the sludge dispersion tank through the water hole 207, and a water injection port 201 and a mud inlet 202 are provided at the top of the sludge dilution tank, and a mud outlet 403 is provided at the bottom of the sludge homogenization tank. A sludge dilution stirring device is provided in the sludge dilution tank, a dispersion stirring device is provided in the sludge dispersion tank, and a homogenization stirring device is provided in the sludge homogenization tank.

[0022] In this embodiment, a support frame is fixedly provided on the outer wall of the pool body 1, and the support frame includes a plurality of transverse support channel steels 101 and a plurality of longitudinal support channel steels 102. The transverse support channel steels 101 and the longitudinal support channel steels 102 are detachably connected by fastening bolts to form a support frame to provide reinforced support for the pool body 1. The row spacing of the transverse support channel steels 101 is 700mm-1000mm, and the column spacing of the longitudinal support channel steels 102 is 1000mm-1500mm; the size of the pool body 1 is: 4500mm (L) × 1500mm (W) × 2700mm (H); the partition 2 302 is 200mm lower than the partition 1 206; the size of the water hole 207 is: 500mm × 500mm.

[0023] A sludge-water mixture is initially formed by injecting sludge and water into the sludge dilution tank in proportion and stirring it thoroughly through the sludge dilution and stirring device. The sludge-water mixture gradually enters the sludge dispersion tank through the water hole 207, and is further stirred by the dispersion and stirring device to form a sludge-water suspension. The suspension overflows through the partition 2 302 into the homogenization tank and is stirred by the homogenization stirring device. On the one hand, the sludge and water are mixed more evenly, and on the other hand, the sludge particles are prevented from settling and are discharged in time through the sludge outlet 403 for subsequent processing.

[0024] The utility model has a compact structure, reduces floor space, can realize continuous dilution and mixing of sludge and water, and simultaneously improves the dilution and mixing effect of sludge and water.

[0025] Furthermore, the sludge dilution and stirring device includes a motor 203 fixedly installed in the middle of the top of the sludge dilution tank. The motor 203 is installed and fixed through a motor support frame 103. The output end of the motor 203 is fixedly connected to a stirring shaft 208. The stirring shaft 208 extends into the sludge dilution tank. A spiral stirring blade 209 is fixedly wound around the stirring shaft 208.

[0026] Furthermore, the dispersing and stirring device includes a motor 2 301 fixedly installed in the middle of the top of the sludge dispersion tank. The motor 2 301 is installed and fixed by a motor support frame 2 104. The output shaft of the motor 2 301 is fixedly connected to a rotating shaft 1 303. The rotating shaft 1 303 extends into the sludge dispersion tank. Several groups of straight stirring blades 1 304 are fixedly connected along the axial direction of the rotating shaft 1 303. The number of straight stirring blades 1 304 in each group is not less than one, and the straight stirring blades 1 304 in the same group are arranged at equal intervals along the circumference of the rotating shaft 1 303.

[0027] Furthermore, the homogenizing stirring device includes a motor 3 401 fixedly installed in the middle of the top of the sludge homogenizing tank. The motor 3 401 is installed and fixed by a motor support frame 3 105. The output shaft of the motor 3 401 is fixedly connected to the rotating shaft 2 404. The rotating shaft 2 404 extends into the sludge homogenizing tank. Several groups of straight stirring blades 2 405 are fixedly connected along the axial direction of the rotating shaft 2 404. The number of straight stirring blades 2 405 in each group is not less than one, and the straight stirring blades 2 405 in the same group are arranged at equal intervals along the circumference of the rotating shaft 2 404.

[0028] Furthermore, an overflow port 204 is fixedly provided on the side wall of the sludge dilution tank, and the overflow port 204 is provided above the partition 1 206 .

[0029] In this embodiment, the axis of the overflow port 204 is 75 mm higher than the top of the partition 206. When the sludge is diluted, in order to prevent the liquid level in the sludge dilution tank from being too high and flowing out from the top of the tank, the excess mud and water mixture can be discharged and collected from the overflow port 204.

[0030] Furthermore, a drain port 205 is fixedly provided at the bottom of the side wall of the sludge dilution tank, and the drain port 205 is provided corresponding to the water hole 207 .

[0031] When the device of the present invention stops running, the mud-water mixture in the sludge dilution tank can be discharged through the provided vent 205 for easy cleaning.

[0032] Furthermore, a material level meter 402 is provided in the sludge homogenization tank, the material level meter 402 is electrically connected to the controller, the mud outlet 403 is connected to the mud discharge pump, the water injection port 201 is connected to the water injection pump through a water pipe, a flow meter is provided on the water pipe, the mud inlet 202 is connected to the sludge lifting pump, and the mud discharge pump, water injection pump, flow meter and sludge lifting pump are all electrically connected to the controller.

[0033] The flow meter is set up to facilitate the measurement of water injection volume during sludge dilution.

[0034] The liquid level of the sludge homogenization tank is monitored in real time by a level meter, and the monitored data is transmitted to the controller. The controller controls the operating power of the sludge discharge pump, the sludge feed pump, and the sludge lifting pump to realize continuous sludge dilution operation. It should be noted that in this embodiment, the sludge discharge pump, the sludge feed pump, and the sludge lifting pump all have variable frequency adjustment functions. The level meter 402 is used to set three liquid level monitoring points, namely low liquid level, middle liquid level, and high liquid level, from bottom to top along the vertical direction of the inner wall of the sludge homogenization tank, thereby realizing real-time monitoring of the liquid level of the sludge homogenization tank.

[0035] The utility model provides a device for diluting external sludge, and its working principle is as follows: before starting the sludge dilution device for the first time, ensure that all motors and valves at the vent 205 are in a closed state; since there is no material in the sludge dilution tank when the system is started for the first time, in order to prevent splashing when the sludge is introduced, it is necessary to start the water injection pump to perform water injection operation. When the water surface in the sludge dilution tank is submerged above the spiral ribbon stirring blade 209, start the motor 1 203, and the motor 1 203 drives the stirring shaft 208 and the spiral ribbon stirring blade 209 to stir. Start the sludge lifting pump to inject sludge with a water content of about 80% into the sludge dilution tank, control the ratio of injected sludge and injected water, and disperse the sludge under the high-speed stirring action of the sludge dilution and stirring device to form a mud-water mixture; the mud-water mixture enters the sludge dispersion tank through the water hole 207 at the bottom end of the partition 1 206, start the motor 2 301, and the motor 2 301 drives the rotating shaft 1 303 and the straight stirring blade 1 304 to further disperse and dilute the mud-water mixture. , after stirring, the sludge will not precipitate; with the continuous feeding, the liquid level of the sludge dispersion tank gradually rises, and the diluted sludge overflows from the top of the partition 2 302 into the sludge homogenization tank. When the liquid level in the sludge homogenization tank reaches the low liquid level, the motor 3 401 is started, and the motor 3 401 drives the rotating shaft 2 404 and the straight stirring blade 2 405 to stir, so that the sludge and water are mixed more evenly to form a suspension, and at the same time, the sedimentation of the diluted mud-water mixture is prevented. When the liquid level in the sludge homogenization tank reaches When the liquid level reaches the middle, the sludge discharge pump is started to discharge the sludge-water mixture; when the liquid level in the sludge homogenization tank reaches the high liquid level, the injection amount of sludge and water is reduced to achieve a rapid decrease in the liquid level of the sludge homogenization tank and prevent the sludge-water mixture from flowing out of the overflow port 204; the liquid level of the sludge homogenization tank is monitored in real time by a level meter, and the monitored data is transmitted to the controller, which controls the operating power of the sludge discharge pump, the sludge inlet pump, and the sludge lifting pump to achieve continuous sludge dilution operation.

[0036] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0037] The above are only preferred specific implementation methods of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.

Claims

1. A device for diluting external sludge, characterized in that: The invention comprises a tank body (1), wherein a partition plate 1 (206) and a partition plate 2 (302) are vertically fixedly connected inside the tank body (1), and the tank body (1) is divided into a sludge dilution tank, a sludge dispersion tank and a sludge homogenization tank in sequence by the partition plate 1 (206) and the partition plate 2 (302), and the top of the partition plate 2 (302) is lower than the top of the partition plate 1 (206), and a water hole (207) is provided at the bottom of the partition plate 1 (206), and the sludge dilution tank is connected to the sludge dispersion tank through the water hole (207), the top of the sludge dilution tank is provided with a water injection port (201) and a sludge inlet (202), the bottom of the sludge homogenization tank is provided with a sludge outlet (403), a sludge dilution stirring device is provided in the sludge dilution tank, a dispersion stirring device is provided in the sludge dispersion tank, and a homogenization stirring device is provided in the sludge homogenization tank.

2. The device for diluting external sludge according to claim 1, characterized in that: The sludge dilution and stirring device comprises a motor 1 (203) fixedly mounted in the middle of the top end of the sludge dilution tank, an output end of the motor 1 (203) is fixedly connected to a stirring shaft (208), the stirring shaft (208) extends into the sludge dilution tank, and a spiral-belt stirring blade (209) is fixedly wound around the stirring shaft (208).

3. The device for diluting external sludge according to claim 1, characterized in that: The dispersing and stirring device includes a second motor (301) fixedly installed in the middle of the top of the sludge dispersion tank, the output shaft of the second motor (301) is fixedly connected to a rotating shaft (303), the rotating shaft (303) extends into the sludge dispersion tank, and a plurality of groups of straight stirring blades (304) are fixedly connected along the axial direction of the rotating shaft (303), the number of the straight stirring blades (304) in each group is not less than one, and the straight stirring blades (304) in the same group are arranged at equal intervals along the circumference of the rotating shaft (303).

4. The device for diluting external sludge according to claim 1, characterized in that: The homogenizing stirring device includes a motor three (401) fixedly installed in the middle of the top of the sludge homogenizing tank, the output shaft of the motor three (401) is fixedly connected to the rotating shaft two (404), the rotating shaft two (404) extends into the sludge homogenizing tank, and a plurality of groups of straight stirring blades two (405) are fixedly connected along the axial direction of the rotating shaft two (404), the number of the straight stirring blades two (405) in each group is not less than one, and the straight stirring blades two (405) in the same group are arranged at equal intervals along the circumference of the rotating shaft two (404).

5. The device for diluting external sludge according to claim 1, characterized in that: An overflow port (204) is fixedly provided on the side wall of the sludge dilution tank, and the overflow port (204) is provided above the partition plate 1 (206).

6. The device for diluting external sludge according to claim 1, characterized in that: A drain port (205) is fixedly provided at the bottom of the side wall of the sludge dilution tank, and the drain port (205) is arranged corresponding to the water hole (207).

7. The device for diluting external sludge according to claim 1, characterized in that: A material level meter (402) is provided in the sludge homogenization tank, and the material level meter (402) is electrically connected to a controller. The sludge outlet (403) is connected to a sludge discharge pump, and the water injection port (201) is connected to a water injection pump via a water pipe, and a flow meter is provided on the water pipe. The sludge inlet (202) is connected to a sludge lifting pump, and the sludge discharge pump, the water injection pump, the flow meter, and the sludge lifting pump are all electrically connected to the controller.

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