CN116444121A - Heat pump sludge drying device for preventing sludge from agglomerating into large blocks - Google Patents

Abstract

The invention discloses a heat pump sludge drying device for preventing sludge from forming a large block, which comprises a drying box and a heating box, wherein the drying box is fixed on the ground through a supporting rod, the left side of the drying box is provided with a stirring box and a conveying pipe, the top end of the stirring box is provided with a feed hopper and a motor, the motor is connected with a stirring shaft, the outer end of the stirring shaft is fixedly provided with a first stirring rod, the outer end of the first stirring rod is fixedly provided with a first scraping plate, the bottom end of the stirring shaft is fixedly provided with a second scraping plate, the bottom end of the second scraping plate is contacted with the upper surface of a filter plate, the right side of the filter plate is provided with a material conveying opening, the stirring box is connected with the conveying pipe through the material conveying opening, and the conveying pipe is connected with the top end of the drying box through the material conveying pipe. This prevent heat pump sludge drying device of big piece of mud caking, conveniently carry out filtration to former mud, prevent the mud caking in the drying process, improve drying efficiency, be convenient for carry out cyclic utilization to the heat.

Description

A heat pump sludge drying device that prevents sludge from agglomerating

technical field

The invention relates to the technical field of sludge drying devices, in particular to a heat pump sludge drying device that prevents sludge from agglomerating into large pieces.

Background technique

During sludge treatment, the wet sludge is usually dehydrated and concentrated first, which can reduce the volume of the sludge and facilitate subsequent landfill or incineration treatment. Generally, a drying device is used to dry the sludge. Currently, heat pump sludge Drying device can meet people's different needs.

For example, the Chinese invention patent with the authorized notification number CN115626754A discloses a hot air circulation sludge heat pump drying device. By setting a first motor, the first motor drives the conveying shaft to rotate and then drives the conveying blade to rotate, so that the conveying blade can be rotated. Push the sludge to move, and cooperate with the transmission between the first driving gear, the first driven gear and the fixed gear ring to make the stirring shaft rotate, and then make the connecting sleeve and stirring rod stir the moving sludge, so that It dries more thoroughly and improves the drying effect of sludge; through the installation of the first circulation fan and the second circulation fan, the circulation of the hot air inside the drying box is completed, and the first ventilation hole and the second ventilation The hole is set to increase the flow speed of hot air, so that the drying efficiency of sludge is higher; by setting up an air purification mechanism, the dust and impurities generated in the hot air during the drying process are absorbed by the impurity adsorption plate, and the moisture is used to The adsorption plate absorbs the moisture in it, and then uses the purification plate to absorb and purify the toxic gas in it to prevent it from affecting the drying effect. Decreases the drying effect. Another example is that the Chinese invention patent with the authorized announcement number CN104129896B discloses a sludge heat pump drying device, which uses a circulating sludge carrying belt to carry and transport sludge, and the sludge is evenly distributed on the sludge carrying belt, diluting the sludge The thickness of the sludge can effectively prevent the sludge from forming large clumps during the drying process, increase the contact area between the sludge and the hot air, increase the drying rate, and shorten the drying time.

However, in combination with the existing technology, the existing heat pump sludge drying device still has the following problems in the process of use:

1. The wet sludge before drying usually has a high moisture content, which is inconvenient to filter;

2. If the contact area between the sludge and the hot air is small during the drying process, the sludge will easily form large clumps, which is not conducive to the drying efficiency;

3. If the heat generated in the drying process is discharged directly, it will cause waste of resources and is inconvenient for recycling. Therefore, we propose a heat pump sludge drying device that prevents sludge from forming large pieces, so as to solve the problems raised above. .

Contents of the invention

The purpose of the present invention is to provide a heat pump sludge drying device that prevents the sludge from forming into large pieces, so as to solve the problem that the sludge drying device commonly used in the market currently proposed in the above background technology is inconvenient to filter the sludge and is easy to form Large lumps are not conducive to drying efficiency, and it is inconvenient to recycle heat.

In order to achieve the above object, the present invention provides the following technical solutions: a heat pump sludge drying device that prevents sludge from agglomerating, including a drying box and a heating box, the drying box is fixed on the ground through a support rod, and the drying box The left side of the box is provided with a stirring box and a feeding pipe. The top of the stirring box is provided with a feed hopper and a motor. The motor is connected to a stirring shaft, and the outer end of the stirring shaft is fixed with a first stirring rod. The outer end of the first stirring rod is fixed with a first scraper, the bottom end of the stirring shaft is fixed with a second scraper, and the bottom end of the second scraper is in contact with the upper surface of the filter plate. The right side of the plate is provided with a material transfer port, the mixing box is connected to the feeding pipe through the feeding port, and the feeding pipe is connected to the top of the drying box through the feeding pipe, and the top of the drying box is fixed with A motor, the motor is connected with a stirring shaft, the outer end of the stirring shaft is fixed with a second stirring rod and a third stirring rod with a "T" shape in longitudinal section, and the outer end of the second stirring rod is fixed with The third scraper, the fourth scraper is arranged below the third scraper, the fourth scraper is installed on the bottom of the stirring shaft, the bottom end of the stirring shaft is fixed with a fourth stirring rod, the first The bottom of the four stirring rods is provided with a discharge port, and the bottom of the discharge port is provided with a fixed ring. The connecting rod of the structure, the top of the connecting rod is rotatably connected with a rotating rod, and the rotating rod is installed on the outer wall of the drying box through a motor. The end of the air collecting pipe is connected with a connecting pipe through an air pump, and the connecting pipe is located inside the water tank, and the end of the connecting pipe runs through the water tank to connect with the heating box. The front end of the box is connected to the air pump through the air outlet pipe, and the air pump is connected to the first air port and the second air port through the air outlet pipe. The first air port is opened at the right end of the drying box, and the second air port is opened at the front end.

Preferably, the height position of the second air port is higher than that of the first air port.

Preferably, the longitudinal centerlines of the fixed ring and the outlet are coincident, the inner diameter of the fixed ring is larger than the inner diameter of the outlet, and the rotating rod, the connecting rod and the fixed ring form a transmission structure.

Preferably, the outer surface of the first scraper is in contact with the inner wall of the stirring box, and the outer surfaces of the third scraper and the fourth scraper are in contact with the inner wall of the drying box.

Preferably, crushing teeth are provided on the second stirring rod, the third stirring rod and the fourth scraper.

Preferably, the longitudinal section of the second scraper is in an "L" shape.

Preferably, the connecting pipe inside the water tank is in a spiral structure, and the filter, air pump, water tank and heating box form a thermal cycle structure.

Preferably, a water outlet is provided at the bottom of the stirring tank.

Compared with the prior art, the beneficial effects of the present invention are: the heat pump sludge drying device that prevents the sludge from agglomerating;

1. There is a second scraper and a filter screen, and the filter screen is used to filter the raw sludge. The longitudinal section of the second scraper is an "L"-shaped structure, which can press the sludge into the feeding pipe and rotate During the process, the sludge at the feed port can be stirred to avoid blockage of the feed port;

2. The second stirring rod, the third stirring rod and the fourth stirring rod are provided, and the sludge is stirred by using the second stirring rod, the third stirring rod and the fourth stirring rod to increase the contact area between the sludge and the hot air, Improve the drying rate and prevent the sludge from forming large clumps during the drying process;

3. Equipped with filter screen, connecting pipe and heating box, the filter screen is used to remove dust and impurities in the circulating airflow during the drying process. The filter screen, air pump, water tank and heating box form a thermal cycle structure, which is convenient for heat recycling.

Description of drawings

Fig. 1 is a schematic diagram of the cut-away structure of the present invention;

Fig. 2 is the structure schematic diagram of stirring box of the present invention;

Fig. 3 is a schematic view of the top view of the first scraper of the present invention;

Fig. 4 is a schematic diagram of a cut-away top view of a drying oven of the present invention;

Fig. 5 is a schematic diagram of the cut-away structure of the drying box of the present invention, viewed from the right side;

Fig. 6 is a schematic diagram of the structure of the fourth scraper of the present invention;

Fig. 7 is a schematic diagram of the left side view of the connection between the rotating rod and the connecting rod in the present invention;

Fig. 8 is a schematic diagram of the overall structure of the fixing ring of the present invention.

In the figure: 1. drying box; 2. mixing box; 3. feeding pipe; 4. feeding hopper; 5. motor; 6. stirring shaft; 7. first stirring rod; 8. first scraper; 9. The second scraper; 10, the filter plate; 11, the second stirring rod; 12, the third stirring rod; 13, the third scraper; 14, the fourth scraper; 15, the fourth stirring rod; 16, the outlet ; 17, fixed ring; 18, fixed rod; 19, connecting rod; 20, rotating rod; 21, air collecting pipe; 22, filter screen; 23, air pump; 24, connecting pipe; 25, water tank; 26, heating box; 27 , heating pipe; 28, outlet pipe; 29, the first air port; 30, the second air port.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-5, the present invention provides a technical solution: a heat pump sludge drying device that prevents sludge from agglomerating, including a drying box 1 and a heating box 26, and the drying box 1 is fixed on the ground through a support rod , the left side of the drying box 1 is provided with a stirring box 2 and a feeding pipe 3, the top of the mixing box 2 is provided with a feed hopper 4 and a motor 5, the motor 5 is connected with a stirring shaft 6, and the outer end of the stirring shaft 6 is fixed with a second A stirring rod 7, the outer end of the first stirring rod 7 is fixed with a first scraper 8, the bottom of the stirring shaft 6 is fixed with a second scraper 9, the bottom of the second scraper 9 is connected with the upper surface of the filter plate 10 In contact with each other, the right side of the filter plate 10 is provided with a feed port, the mixing box 2 is connected with the feed pipe 3 through the feed port, the feed pipe 3 is connected with the top of the drying box 1 through the feed pipe, and the dry box 1 A motor 5 is fixed on the top of the motor, and the motor 5 is connected to the stirring shaft 6. The outer end of the stirring shaft 6 is fixed with a second stirring rod 11 and a third stirring rod 12 with a "T"-shaped structure in the longitudinal section. The second stirring rod 11 The outer end of the third scraper 13 is fixed, and the fourth scraper 14 is arranged below the third scraper 13. The fourth scraper 14 is installed on the bottom of the stirring shaft 6, and the bottom end of the stirring shaft 6 is fixed with a fourth stirring Rod 15, the bottom of the fourth stirring rod 15 is provided with a discharge port 16, the below of the discharge port 16 is provided with a fixed ring 17, the upper end of the fixed ring 17 is fixed with a fixed rod 18, and the left end of the fixed ring 17 is connected with a longitudinal section. The connecting rod 19 of "L" font structure, the top of connecting rod 19 is connected with rotating rod 20, and rotating rod 20 is installed on the outer wall of drying box 1 by motor 5, and the top of drying box 1 is connected with collecting pipe 21, collects A filter screen 22 is fixed inside the air pipe 21, and the end of the gas collecting pipe 21 is connected to a connecting pipe 24 through an air pump 23. The connecting pipe 24 is located inside the water tank 25, and the end of the connecting pipe 24 runs through the water tank 25 and is connected to the heating box 26. The inside of the heating box 26 A heating pipe 27 is provided, and the front end of the heating box 26 is connected with the air pump 23 through the air outlet pipe 28, and the air pump 23 is connected with the first air port 29 and the second air port 30 through the air outlet pipe 28, and the first air port 29 is opened at the bottom of the drying box 1. At the right end, the second air port 30 is provided at the front end of the drying box 1;

The height position of the second air port 30 is higher than the height position of the first air port 29, which facilitates the multi-directional delivery of hot air to the drying box 1 and improves the drying efficiency;

The longitudinal centerlines of the fixed ring 17 and the discharge port 16 coincide, the internal diameter of the fixed ring 17 is greater than the internal diameter of the discharge port 16, the rotating rod 20, the connecting rod 19 and the fixed ring 17 form a transmission structure, and under the action of the motor 5 Make the fixed rod 18 on the fixed ring 17 knock the discharge port 16, so that the sludge on the inner wall of the discharge port 16 is shaken off and discharged conveniently;

The outer surface of the first scraper 8 is in contact with the inner wall of the mixing box 2, and the outer surfaces of the third scraper 13 and the fourth scraper 14 are in contact with the inner wall of the drying box 1, so as to facilitate the cleaning of the mixing box 2 and the inner wall of the drying box 1. Sludge scraping;

The second stirring rod 11, the third stirring rod 12 and the fourth scraper 14 are all equipped with crushing teeth, which are convenient to carry out a certain crushing effect on the dried sludge and prevent the sludge from agglomerating;

The longitudinal section of the second scraper 9 has an "L"-shaped structure, which can stir the sludge at the material transfer port during rotation to avoid blockage of the material transfer port;

The connecting pipe 24 inside the water tank 25 has a spiral structure, and the filter screen 22, the air pump 23, the water tank 25 and the heating box 26 form a thermal cycle structure, which is convenient for recycling the gas;

The bottom of the mixing box 2 is provided with a water outlet to facilitate the discharge of water in the sludge.

Working principle: the drying box 1 is fixed on the ground through a support rod, the left side of the drying box 1 is provided with a mixing box 2 and a feeding pipe 3, the mixing box 2 is connected with the feeding pipe 3 through the feeding port, and the feeding pipe 3 Connect with the top of drying box 1 through the material transfer port, motor 5 and screw rod are fixed inside feeding pipe 3, as shown in Figure 1, Figure 2 and Figure 3, the top of stirring box 2 is provided with feed hopper 4 and The motor 5 is connected to the stirring shaft 6, the outer end of the stirring shaft 6 is fixed with the first stirring rod 7, and the first stirring rod 7 is evenly equipped with crushing teeth, and the sludge enters the stirring box 2 from the feeding hopper 4, The first stirring rod 7 rotates under the action of the motor 5 to stir and crush the sludge, which is beneficial to the subsequent drying efficiency. 2 inner walls are in contact with each other to scrape off the sludge adhering to the inner wall of the mixing tank 2. A filter 22 is provided below the stirring shaft 6 to filter out some moisture contained in the sludge. The bottom of the mixing tank 2 is provided with a There is a water outlet, and the water outlet is located directly below the filter screen 22, which is convenient for water to discharge out of the box. The bottom end of the stirring shaft 6 is fixed with a second scraper 9, and the bottom end of the second scraper 9 is in contact with the upper surface of the filter plate 10. , and the longitudinal section of the second scraper 9 has an "L"-shaped structure, and the second scraper 9 is used to scrape the sludge into the feeding pipe 3 in time to prevent excessive accumulation at the feeding port and cause blockage;

As shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 6, the feed pipe 3 transmits the sludge to the drying box 1 through the feeding pipe, the right side of the drying box 1 is provided with a heating box 26, and the inside of the heating box 26 is provided with Heating pipe 27, the front end of heating box 26 is connected with air pump 23 by connecting pipe 24, and air pump 23 is connected with first air port 29 and second air port 30 by hot air pipe, and first air port 29 is offered at the right end of drying box 1, the second Two gas ports 30 are offered at the front end of drying box 1, and the height position of the second gas port 30 is higher than the height position of the first gas port 29, which is convenient for multi-directional delivery of hot gas in the drying box 1. The top of the drying box 1 is fixed with a motor 5, and the motor 5 is connected with a stirring shaft 6, the outer end of the stirring shaft 6 is fixed with a second stirring rod 11 and a third stirring rod 12 at an equal angle, the outer end of the second stirring rod 11 is fixed with a third scraper 13, and the third scraper 13 A fourth scraper 14 is provided below the motor 5, and the stirring shaft 6 rotates, and the second stirring rod 11 and the third stirring rod 12, the third scraper 13 and the fourth scraper 14 rotate thereupon, thereby the drying box 1 Fully stir the sludge, increase the contact area between the sludge and the hot air, prevent the sludge from forming large clumps, and improve the drying efficiency, and the second stirring rod 11, the third stirring rod 12 and the fourth scraper 14 There are crushing teeth on the top, which can crush the dried sludge to a certain extent, prevent the sludge from agglomerating, and facilitate the subsequent discharge of the dried sludge;

As shown in Fig. 1, Fig. 7 and Fig. 8, the bottom end of drying box 1 is provided with discharge port 16, and the outside of discharge port 16 is provided with fixed rod 18, and fixed rod 18 is fixed on the fixed ring 17, and the fixed ring 17 The left end is connected with a connecting rod 19, and the top of the connecting rod 19 is rotatably connected with a rotating rod 20. Under the action of the motor 5, the rotating rod 20, the connecting rod 19 and the fixed ring 17 form a transmission structure, so that the fixed ring 17 does a small lifting movement, Thereby make fixed rod 18 carry out impact vibration to discharge port 16, be convenient to shake off the sludge sticking on the discharge port 16 inner wall and shake off discharge, and discharge port 16 is provided with the 4th stirring rod 15, can prevent The sludge is agglomerated, which is convenient for smooth discharge;

As shown in Fig. 1, Fig. 4 and Fig. 5, the top of the drying box 1 is connected with an air collecting pipe 21, and a filter screen 22 is fixed inside the air collecting pipe 21, and the end of the air collecting pipe 21 is connected with a connecting pipe 24 through an air pump 23, and the connecting pipe 24 Located inside the water tank 25, the top of the water tank 25 is provided with ventilation holes, and the rear end of the water tank 25 is provided with a water inlet and a water outlet with a valve. Under the action of the air pump 23, the hot air in the drying box 1 enters the air collecting pipe 21 and passes through the filter screen 22 , use the filter screen 22 to remove dust and purify the dust and impurities in the hot air, and then the hot air enters the connecting pipe 24, and the connecting pipe 24 inside the water tank 25 has a spiral structure, which can increase the contact area between the hot air and the water body of the water tank 25, and facilitate heat dissipation. Recycling, the gas enters the inside of the heating box 26 through the connecting pipe 24, thereby being converted into hot gas, and under the action of the air pump 23, the hot gas enters the drying box 1 for drying, so that the filter screen 22, the air pump 23, the water tank 25 and the heating The box 26 constitutes a thermal cycle structure to achieve the purpose of recycling the gas. The above is the working process of the whole device, and the content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. A heat pump sludge drying device that prevents sludge from agglomerating, comprising a drying box (1) and a heating box (26), is characterized in that: the drying box (1) is fixed on the ground by a support rod, The left side of the drying box (1) is provided with a stirring box (2) and a feeding pipe (3), and the top of the stirring box (2) is provided with a feed hopper (4) and a motor (5), the The motor (5) is connected with a stirring shaft (6), the outer end of the stirring shaft (6) is fixed with a first stirring rod (7), and the outer end of the first stirring rod (7) is fixed with a first scraper (8), the bottom end of the stirring shaft (6) is fixed with a second scraper (9), and the bottom end of the second scraper (9) is in contact with the upper surface of the filter plate (10), the The right side of the filter plate (10) is provided with a feed port, and the stirring box (2) is connected with the feed pipe (3) through the feed port, and the feed pipe (3) is connected with the drying box through the feed pipe The top of (1) is connected, and the top of described drying box (1) is fixed with motor (5), and described motor (5) is connected with stirring shaft (6), and the outer end of described stirring shaft (6) is fixed with The second stirring rod (11) and the third stirring rod (12) whose longitudinal section is a "T" shape structure, the outer end of the second stirring rod (11) is fixed with a third scraper (13), and the second stirring rod (11) is fixed with a third scraper (13). The bottom of the third scraper (13) is provided with a fourth scraper (14), and the fourth scraper (14) is installed on the bottom of the stirring shaft (6), and the bottom end of the stirring shaft (6) is fixed with The fourth stirring rod (15), the bottom of the fourth stirring rod (15) is provided with a discharge port (16), and the below of the discharge port (16) is provided with a fixed ring (17), and the fixed ring The upper end of (17) is fixed with fixed rod (18), and the left end of described fixed ring (17) is connected with the connecting rod (19) that longitudinal section is " L " font structure, and the top end of described connecting rod (19) rotates A rotating rod (20) is connected, and the rotating rod (20) is installed on the outer wall of the drying box (1) through a motor (5), and the top of the drying box (1) is connected with a gas collecting pipe (21). A filter screen (22) is fixed inside the air collecting pipe (21), and the end of the air collecting pipe (21) is connected with a connecting pipe (24) through an air pump (23), and the connecting pipe (24) is located inside the water tank (25). The end of the connecting pipe (24) runs through the water tank (25) and is connected to the heating box (26). The inside of the heating box (26) is provided with a heating pipe (27), and the front end of the heating box (26) passes through the outlet Air pipe (28) is connected with air pump (23), and described air pump (23) is connected with first air port (29) and second air port (30) by outlet pipe (28), and described first air port (29) opens At the right end of the drying box (1), the second air port (30) is opened at the front end of the drying box (1). 2. A heat pump sludge drying device for preventing sludge from agglomerating according to claim 1, characterized in that: the height of the second air port (30) is higher than the height of the first air port (29) Location. 3. A heat pump sludge drying device for preventing sludge from forming large pieces according to claim 1, characterized in that: the longitudinal centerline of the fixed ring (17) and the discharge port (16) coincides, The inner diameter of the fixed ring (17) is larger than the inner diameter of the discharge port (16), and the rotating rod (20), the connecting rod (19) and the fixed ring (17) form a transmission structure. 4. A heat pump sludge drying device for preventing sludge from forming large pieces according to claim 1, characterized in that: the outer surface of the first scraper (8) is in contact with the inner wall of the stirring box (2), Both the outer surfaces of the third scraper (13) and the fourth scraper (14) are in contact with the inner wall of the drying box (1). 5. A heat pump sludge drying device for preventing sludge from agglomerating according to claim 1, characterized in that: the second stirring rod (11), the third stirring rod (12) and the fourth scraping rod Plates (14) are equipped with pulverizing teeth. 6. A heat pump sludge drying device for preventing sludge from agglomerating according to claim 1, characterized in that: the longitudinal section of the second scraper (9) has an "L"-shaped structure. 7. A heat pump sludge drying device for preventing sludge from agglomerating according to claim 1, characterized in that: the connecting pipe (24) inside the water tank (25) has a spiral structure, and the filter Net (22), air pump (23), water tank (25) and heating box (26) constitute heat circulation structure. 8. A heat pump sludge drying device for preventing sludge from agglomerating according to claim 1, characterized in that: a water outlet is provided at the bottom of the mixing box (2).