Coking coal heating, dehydrating and discharging device

Abstract

The utility model relates to a coking coal heating, dewatering and discharging device, and belongs to the technical field of coal humidity control equipment. According to the technical scheme, two pneumatic units (2) are arranged on a square tube heat exchanger (1), each pneumatic unit (2) is connected with a plurality of blanking units (3), and the blanking units (3) connected with different pneumatic units (2) are alternately arranged; each blanking unit (3) comprises a bottom plate (31) and unloading barbs (32), the bottom plates are connected with the pneumatic units, a plurality of unloading barbs are mounted on the bottom plates, the number of the unloading barbs is the same as that of the square tubes, the unloading barbs are arranged in the square tubes, and the plurality of blanking units are driven by the two pneumatic units to reciprocate in the square tube heat exchanger so as to take out pulverized coal on the inner wall of the square tube heat exchanger. The device has the beneficial effects that pulverized coal adhered to the inner wall of the square tube heat exchanger can be effectively removed, so that the blanking process is smooth and unobstructed, and the blanking efficiency is greatly improved; and the square tube heat exchanger provides a larger heat exchange area, so that a higher heating speed is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coke heating dehydration unloading device belongs to coal moisture control equipment technical field. BACKGROUND

[0002] The coal moisture control technology has strict water control measures, which can ensure the constancy of the moisture of the coke oven coal. The technology directly or indirectly heats to reduce and stably control the moisture contained in the coal entering the furnace, does not pursue the maximum removal of the moisture of the coke oven gas, but only stabilizes the moisture at a relatively low level, which can achieve the purpose of increasing the benefit, and will not cause the operation difficulty of the coke oven and the recovery system due to the too low moisture. In the coal moisture control process, when the pulverized coal is heated and dehydrated, if a heating pipe with a large size is used, the heating speed is slow, which is difficult to match the rhythm of efficient production. If a heating pipe with a small size, such as a square pipe, is selected to improve the heating speed, the pulverized coal will be adhered to the wall of the heat exchanger in the heating process, which causes the difficult or even impossible discharging, seriously restricts the production efficiency, and interferes with the normal operation of the equipment. The existing unloading device cannot properly solve this problem, and a new unloading device is urgently needed to reverse the situation. SUMMARY

[0003] The utility model aims at providing a coke heating dehydration unloading device, which can effectively remove the adhered pulverized coal on the wall of the heat exchanger, make the discharging process smooth and unobstructed, greatly improve the discharging efficiency, and realize efficient heating, thereby solving the problems in the background technology.

[0004] The technical scheme of the utility model is as follows:

[0005] A coke heating dehydration unloading device comprises a square tube heat exchanger, a pneumatic unit and a discharging unit. The square tube heat exchanger has a rectangular structure composed of multiple square tubes. The two sides of the square tube heat exchanger are respectively provided with a hot medium inlet and a hot medium outlet. The hot medium enters through the hot medium inlet, flows through the inside of the square tube heat exchanger, and flows out from the hot medium outlet to heat the pulverized coal in the square tube. Two pneumatic units are arranged on the square tube heat exchanger. Each pneumatic unit is connected with multiple discharging units. The discharging units connected with different pneumatic units are alternately arranged. The discharging unit comprises a bottom plate and a discharging barb. The bottom plate is connected with the pneumatic unit. Multiple discharging barbs are installed on the bottom plate. The number of the discharging barbs is the same as that of the square tubes. The discharging barbs are arranged in the square tubes. The multiple discharging units are driven by the two pneumatic units to make reciprocating motion in the square tube heat exchanger, so as to take out the pulverized coal on the inner wall of the square tube heat exchanger.

[0006] The pneumatic unit comprises a cylinder, a bottom plate connecting plate and a cylinder fixing rod. The top of the cylinder is fixedly connected with the square tube heat exchanger through the cylinder fixing rod. The push rod at the bottom of the cylinder is connected with the bottom plate of the discharging unit through the bottom plate connecting plate.

[0007] The number of the air cylinders is eight, which are air cylinder one, air cylinder two, air cylinder three, air cylinder four, air cylinder five, air cylinder six, air cylinder seven and air cylinder eight, the air cylinder one, the air cylinder three, the air cylinder five and the air cylinder seven are the same pneumatic unit, the air cylinder two, the air cylinder four, the air cylinder six and the air cylinder eight are another pneumatic unit, the number of the bottom plate connecting plates is four, which are bottom plate connecting plate one, bottom plate connecting plate two, bottom plate connecting plate three and bottom plate connecting plate four, the push rod of the air cylinder one and the air cylinder three is connected through the bottom plate connecting plate one, the push rod of the air cylinder two and the air cylinder four is connected through the bottom plate connecting plate two, the push rod of the air cylinder five and the air cylinder seven is connected through the bottom plate connecting plate three, and the push rod of the air cylinder six and the air cylinder eight is connected through the bottom plate connecting plate four.

[0008] The length of the bottom plate is greater than the width of the square tube heat exchanger, the length of the bottom plate of the blanking unit connected with the same pneumatic unit is the same, the length of the bottom plate of the blanking unit connected with different pneumatic units is different, the lengths of the bottom plates of the blanking units connected with two pneumatic units are bottom plate one and bottom plate two, the bottom plate one and the bottom plate two are alternately arranged, the bottom plate one and the bottom plate two are located in the same plane, the length of the bottom plate one is greater than that of the bottom plate two, the bottom plate connecting plate one and the bottom plate connecting plate three are connected with two ends of the bottom plate one respectively, and the bottom plate connecting plate two and the bottom plate connecting plate four are connected with two ends of the bottom plate two respectively.

[0009] The unloading barb is a fishbone-shaped structure.

[0010] The hot medium inlet and the hot medium outlet are arranged at the bottom of the left side and the top of the right side of the square tube heat exchanger respectively.

[0011] The blanking unit reciprocates under the driving of the pneumatic unit, can effectively remove the coal powder adhered to the inner wall of the square tube heat exchanger, makes the blanking process smooth and unobstructed, and greatly improves the blanking efficiency; the square tube heat exchanger provides a large heat exchange area and realizes a high heating speed; the structure is reasonable, convenient to install, maintain and overhaul, and effectively reduces the equipment operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is a side view of the utility model;

[0014] Figure 3 It is a top view of the utility model;

[0015] Figure 4 It is a perspective view of the utility model;

[0016] Figure 5The utility model discloses pneumatic unit structure schematic diagram shows that the utility model discloses pneumatic unit side view shows that the utility model discloses pneumatic unit plan view shows that the utility model discloses pneumatic unit perspective view shows that the utility model discloses blanking unit structure schematic diagram shows that the utility model discloses blanking unit plan view shows that the utility model discloses blanking unit perspective view.

[0017] Figure 6 The utility model discloses pneumatic unit side view shows that the utility model discloses pneumatic unit plan view shows that the utility model discloses pneumatic unit perspective view shows that the utility model discloses blanking unit structure schematic diagram shows that the utility model discloses blanking unit plan view shows that the utility model discloses blanking unit perspective view.

[0018] Figure 7 The utility model discloses pneumatic unit plan view shows that the utility model discloses pneumatic unit perspective view shows that the utility model discloses blanking unit structure schematic diagram shows that the utility model discloses blanking unit plan view shows that the utility model discloses blanking unit perspective view.

[0019] Figure 8 The utility model discloses pneumatic unit perspective view shows that the utility model discloses blanking unit structure schematic diagram shows that the utility model discloses blanking unit plan view shows that the utility model discloses blanking unit perspective view.

[0020] Figure 9 The utility model discloses blanking unit structure schematic diagram shows that the utility model discloses blanking unit plan view shows that the utility model discloses blanking unit perspective view.

[0021] Figure 10 The utility model discloses blanking unit plan view shows that the utility model discloses blanking unit perspective view.

[0022] In the drawing: square tube heat exchanger 1, square tube 11, hot medium import 12, hot medium export 13, pneumatic unit 2, pneumatic cylinder 21, pneumatic cylinder one 211, pneumatic cylinder two 212, pneumatic cylinder three 213, pneumatic cylinder four 214, pneumatic cylinder five 215, pneumatic cylinder six 216, pneumatic cylinder seven 217, pneumatic cylinder eight 218, bottom plate connecting plate 22, bottom plate connecting plate one 221, bottom plate connecting plate two 222, bottom plate connecting plate three 223, bottom plate connecting plate four 224, pneumatic cylinder fixed rod 23, blanking unit 3, bottom plate 31, bottom plate one 311, bottom plate two 312, unloading barb 32. DETAILED DESCRIPTION

[0023] The utility model is further explained by example in combination with the drawings.

[0024] A coking coal heating dehydration unloading device, contain square tube heat exchanger 1, pneumatic unit 2 and blanking unit 3, square tube heat exchanger 1 is by multiple square tube 11 the rectangular structure of composition, and the two sides of square tube heat exchanger 1 are equipped with hot medium import 12 and hot medium export 13 respectively, and hot medium passes through hot medium import 12 and enters, flows through square tube heat exchanger inside, and flows from hot medium export 13, heats the coal powder in square tube;Square tube heat exchanger 1 is provided with two pneumatic units 2, and each pneumatic unit 2 is connected with multiple blanking units 3, and the blanking unit 3 connected by different pneumatic units 2 is alternately arranged;Blanking unit 3 contains bottom plate 31 and unloading barb 32, and bottom plate 31 is connected with pneumatic unit 2, and multiple unloading barbs 32 are installed on bottom plate 31, and the number of unloading barb is same with square tube, and unloading barb is arranged in square tube, and multiple blanking units 3 make reciprocating motion in square tube heat exchanger 1 by the drive of two pneumatic units 2, and take out the coal powder on the inner wall of square tube heat exchanger 1.

[0025] The pneumatic unit 2 comprises a cylinder 21, a bottom plate connecting plate 22 and a cylinder fixing rod 23, the top of the cylinder 21 is fixedly connected with the square tube heat exchanger 1 through the cylinder fixing rod 23, and the push rod at the bottom of the cylinder 21 is connected with the bottom plate 31 of the blanking unit 3 through the bottom plate connecting plate 22.

[0026] The number of the cylinders 21 is eight, which are cylinder one 211, cylinder two 212, cylinder three 213, cylinder four 214, cylinder five 215, cylinder six 216, cylinder seven 217 and cylinder eight 218, the cylinder one 211, the cylinder two 212, the cylinder three 213 and the cylinder four 214 are arranged on the front side of the square tube heat exchanger 1, the cylinder five 215, the cylinder six 216, the cylinder seven 217 and the cylinder eight 218 are arranged on the rear side of the square tube heat exchanger 1, the cylinder one 211, the cylinder three 213, the cylinder five 215 and the cylinder seven 217 are in the same pneumatic unit, the cylinder two 212, the cylinder four 214, the cylinder six 216 and the cylinder eight 218 are in another pneumatic unit, the number of the bottom plate connecting plates 22 is four, which are bottom plate connecting plate one 221, bottom plate connecting plate two 222, bottom plate connecting plate three 223 and bottom plate connecting plate four 224, the push rods of the cylinder one 211 and the cylinder three 213 are connected through the bottom plate connecting plate one 221, the push rods of the cylinder two 212 and the cylinder four 214 are connected through the bottom plate connecting plate two 222, the push rods of the cylinder five 215 and the cylinder seven 217 are connected through the bottom plate connecting plate three 223, and the push rods of the cylinder six 216 and the cylinder eight 218 are connected through the bottom plate connecting plate four 224.

[0027] The length of the bottom plate 31 is greater than the width of the square tube heat exchanger 1, the length of the bottom plate 31 of the blanking unit 3 connected with the same pneumatic unit is the same, the length of the bottom plate 31 of the blanking unit 3 connected with different pneumatic units is different, the bottom plates 31 of the blanking units 3 connected with two pneumatic units are bottom plate one 311 and bottom plate two 312 respectively, the bottom plate one 311 and the bottom plate two 312 are arranged alternately, the bottom plate one 311 and the bottom plate two 312 are located in the same plane, the length of the bottom plate one 311 is greater than the length of the bottom plate two 312, the bottom plate connecting plate one 221 and the bottom plate connecting plate three 223 are respectively connected with the two ends of the bottom plate one 311, and the bottom plate connecting plate two 222 and the bottom plate connecting plate four 224 are respectively connected with the two ends of the bottom plate two 312.

[0028] The unloading barb 32 is in the shape of a fish spine.

[0029] The hot medium inlet 12 and the hot medium outlet 13 are respectively arranged at the bottom of the left side and the top of the right side of the square tube heat exchanger 1.

[0030] The cylinder fixing rod 23 has a proper length according to the distance between each cylinder and the square tube heat exchanger.

[0031] In this embodiment, the square tube heat exchanger 1 is built by multiple square tubes 11. The heat medium enters the square tube heat exchanger through the heat medium inlet 12, flows through the gaps between the square tubes inside the square tube heat exchanger, and flows out from the heat medium outlet 13. With the large heat exchange area of the square tube, the pulverized coal in each square tube is rapidly heated, meeting the demand for efficient heating. Four air cylinders 21 are arranged on the front and back sides of the square tube heat exchanger 1, a total of eight air cylinders. Air cylinder one 211 and air cylinder three 213 are connected by bottom plate connecting plate one 221, and air cylinder five 215 and air cylinder seven 217 are connected by bottom plate connecting plate three 223, forming a pneumatic unit; air cylinder two 212 and air cylinder four 214 are connected by bottom plate connecting plate two 222, and air cylinder six 216 and air cylinder eight 218 are connected by bottom plate connecting plate four 224, forming another pneumatic unit, a total of two pneumatic units, which can realize alternating reciprocating motion and cooperatively complete the unloading task. The number of the discharging unit 3 is multiple, and each discharging unit includes a bottom plate 31 and a discharging barb 32. The bottom plate is connected to the push rod of the air cylinder through the bottom plate connecting plate and moves reciprocally in the heat exchanger under the drive of the air cylinder; the discharging barb is installed on the bottom plate, and its fishbone-like structure can carry out the pulverized coal adhering to the wall of the heat exchanger. The bottom plate connecting plate plays a key role in connecting one end of the air cylinder to the other end of the multiple discharging units, ensuring stable power transmission; the air cylinder fixing rod is used to stabilize the air cylinder push rod to ensure the stability of its movement. In this way, multiple discharging units can more comprehensively and efficiently perform unloading operations on the pulverized coal in the square tube heat exchanger under the drive of the air cylinder.

[0032] Installation and debugging: Install the square tube heat exchanger at the appropriate location according to the design requirements, and make sure that the heat medium inlet and outlet are connected accurately. Then install the air cylinders on both sides and connect them with multiple discharging units through the bottom plate connecting plate. Carefully adjust the position of the air cylinder fixing rod to ensure smooth movement of the air cylinder push rod. After installation, carry out debugging work to check whether the air cylinder is in coordination and whether the movement of the multiple discharging units is normal.

[0033] Working process: When the device is running, the heat medium flows into the gaps between the square tubes of the square tube heat exchanger to heat the pulverized coal in the square tubes. When the heating temperature reaches the standard, the control system starts the air cylinder. One set of pneumatic units reciprocate, and the four air cylinders on both sides simultaneously push multiple discharging units to move up and down reciprocally. The discharging barb reciprocates in the pulverized coal, scraping and carrying out the pulverized coal adhering to the inner wall of the square tube heat exchanger, and completing the unloading. The other set of air cylinders then repeat the same action, and the cycle is repeated to ensure the continuity of the unloading.

[0034] Maintenance and maintenance: regular inspection of the sealing performance of the cylinder, prevent gas leakage and affect the action effect. Check the bottom plate and unloading barb of multiple blanking units, replace in time once found wear. Clean the inside of the square tube heat exchanger to prevent impurities from accumulating and affecting heat exchange efficiency. At the same time, tighten all connecting parts to ensure stable operation of the device.

[0035] The advantages of the utility model are:

[0036] 1. Solve the problem of discharging: multiple blanking units reciprocate under the drive of pneumatic units, and cooperate with the unique structural design of the unloading barb, which can effectively remove the coal powder adhered to the inner wall of the square tube heat exchanger, so that the discharging process is smooth and unobstructed, greatly improves the discharging efficiency, and significantly reduces the production interruption caused by discharging problems;

[0037] 2. Efficient heating: the square tube heat exchanger composed of multiple square tubes provides a large heat exchange area, realizes a high heating speed, and effectively improves the efficiency of the whole coal moisture control process;

[0038] 3. Reasonable structure: the overall structure is compact, the components are connected tightly, the cylinder in the pneumatic unit cooperates with multiple blanking units, the action is accurate, and it is convenient to install, maintain and overhaul, which effectively reduces the equipment operation cost.

Claims

1. A coking coal heating, dehydration, and unloading device, characterized in that: The device includes a square tube heat exchanger (1), a pneumatic unit (2), and a material feeding unit (3). The square tube heat exchanger (1) is a rectangular structure composed of multiple square tubes (11). The square tube heat exchanger (1) has a heat medium inlet (12) and a heat medium outlet (13) on both sides. The heat medium enters through the heat medium inlet (12), flows through the inside of the square tube heat exchanger, and flows out from the heat medium outlet (13) to heat the pulverized coal in the square tubes. Two pneumatic units (2) are installed on the square tube heat exchanger (1), and each pneumatic unit (2) is connected to multiple material feeding units. Unit (3) is connected, and different pneumatic units (2) are connected to the material dropping units (3) alternately arranged; the material dropping unit (3) includes a base plate (31) and a discharge barb (32). The base plate (31) is connected to the pneumatic unit (2). Multiple discharge barbs (32) are installed on the base plate (31). The number of discharge barbs is the same as that of the square tube. The discharge barbs are set inside the square tube. Multiple material dropping units (3) are driven by two pneumatic units (2) to reciprocate in the square tube heat exchanger (1) and carry out the coal powder on the inner wall of the square tube heat exchanger (1).

2. The coking coal heating, dehydration, and unloading device according to claim 1, characterized in that: The pneumatic unit (2) includes a cylinder (21), a base plate connecting plate (22) and a cylinder fixing rod (23). The top of the cylinder (21) is fixedly connected to the square tube heat exchanger (1) through the cylinder fixing rod (23), and the push rod at the bottom of the cylinder (21) is connected to the base plate (31) of the material dropping unit (3) through the base plate connecting plate (22).

3. The coking coal heating, dehydration, and unloading device according to claim 2, characterized in that: The number of cylinders (21) is eight, namely cylinder one (211), cylinder two (212), cylinder three (213), cylinder four (214), cylinder five (215), cylinder six (216), cylinder seven (217), and cylinder eight (218). Cylinder one (211), cylinder two (212), cylinder three (213), and cylinder four (214) are located on the front side of the square tube heat exchanger (1), and cylinder five (215), cylinder six (216), cylinder seven (217), and cylinder eight (218) are located on the rear side of the square tube heat exchanger (1). Cylinder one (211), cylinder three (213), cylinder five (215), and cylinder seven (217) are the same pneumatic unit, and cylinder two (212), cylinder three (213), cylinder five (215), and cylinder seven (217) are the same pneumatic unit. Cylinder 4 (214), Cylinder 6 (216) and Cylinder 8 (218) are another pneumatic unit; there are four base plate connecting plates (22), namely base plate connecting plate 1 (221), base plate connecting plate 2 (222), base plate connecting plate 3 (223) and base plate connecting plate 4 (224). The push rods of Cylinder 1 (211) and Cylinder 3 (213) are connected through base plate connecting plate 1 (221), the push rods of Cylinder 2 (212) and Cylinder 4 (214) are connected through base plate connecting plate 2 (222), the push rods of Cylinder 5 (215) and Cylinder 7 (217) are connected through base plate connecting plate 3 (223), and the push rods of Cylinder 6 (216) and Cylinder 8 (218) are connected through base plate connecting plate 4 (224).

4. The coking coal heating, dehydration, and unloading device according to claim 3, characterized in that: The length of the base plate (31) is greater than the width of the square tube heat exchanger (1). The base plate (31) of the material dropping unit (3) connected to the same pneumatic unit has the same length, while the base plate (31) of the material dropping unit (3) connected to different pneumatic units has different lengths. The base plates (31) of the material dropping unit (3) connected to two pneumatic units are base plate one (311) and base plate two (312), respectively. Base plate one (311) and base plate two (312) are arranged alternately. Base plate one (311) and base plate two (312) are located in the same plane. The length of base plate one (311) is greater than the length of base plate two (312). Base plate connecting plate one (221) and base plate connecting plate three (223) are connected to the two ends of base plate one (311), respectively. Base plate connecting plate two (222) and base plate connecting plate four (224) are connected to the two ends of base plate two (312), respectively.

5. A coking coal heating, dehydration, and unloading device according to claim 1 or 2, characterized in that: The unloading barbs (32) have a fishbone-like structure.

6. The coking coal heating, dehydration, and unloading device according to claim 3, characterized in that: The heat medium inlet (12) and heat medium outlet (13) are respectively located at the bottom of the left side and the top of the right side of the square tube heat exchanger (1).

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