Hot melting tank

Abstract

The utility model relates to a hot melting tank which comprises a tank body (1), a stirring device and a sealing device, and a stirring opening (11) is formed in the top of the tank body. The sealing device comprises a sealing box (3) and two sealing pieces (4), the sealing box is fixedly arranged on the top of the tank body, a sealing cover (6) is arranged on the upper portion of the sealing box, a first through hole is formed in a bottom plate of the sealing box, and a second through hole (63) is formed in the sealing cover. The sealing piece is arranged in the sealing box and comprises a telescopic structure and a flame-retardant rock wool block (47), one end of the telescopic structure is fixedly connected with the inner side wall of the sealing box, and the other end of the telescopic structure is fixedly connected with the flame-retardant rock wool block (47). The flame-retardant rock wool blocks (47) on the two sealing pieces abut against each other. The upper end of the stirring rod (22) is fixedly connected with a rotating shaft of the motor, and the lower end of the stirring rod (22) penetrates through the first through hole (34), the second through hole (63) and the stirring opening (11) and extends into the hot melting cavity. According to the utility model, the gap at the stirring port of the hot melting tank can be sealed, so that steam leakage is prevented.

Description

Technical Field

[0001] The utility model relates to a hot melt tank, in particular to the structure of the hot melt tank. Background Art

[0002] The hot dissolution tank is the equipment where the main reaction of the hot dissolution cold crystallization process for producing potassium chloride occurs. The sylvite material is added to the fresh water in the hot dissolution tank and steam is introduced for heating. Since the solubility of potassium chloride and sodium chloride is different under different temperature conditions, the solubility of potassium chloride increases with increasing temperature. On the contrary, the solubility of sodium chloride decreases with increasing temperature and exists as a solid phase in the saturated potassium chloride solution, thereby separating potassium chloride and sodium chloride.

[0003] In order to make the solution in the tank of the hot melt tank heated evenly, speed up the heating rate and accelerate the dissolution of solid materials, a stirring device is usually provided on the tank body. The stirring rod of the stirring device is inserted into the tank body from the stirring port on the top of the tank body. The motor arranged on the top of the tank body drives the stirring rod to rotate, and the blades on the stirring rod stir the solution in the tank body to achieve rapid dissolution of the material.

[0004] The connection between the stirring port and the stirring rod on the top of the existing tank body is not tight, resulting in steam leakage in the gap of the stirring port on the top of the tank body during operation. In addition, the stirring port is worn by the stirring rod due to long-term rotation, which further increases the gap between the stirring port and the stirring rod, further aggravating the steam leakage. Steam leakage will lead to a decrease in heat exchange efficiency, resulting in insufficient solution temperature in the tank body, so that the potassium chloride in the sylvite cannot be fully dissolved into the liquid phase, affecting the smooth operation of the production process and affecting the output and quality of the product.

[0005] In addition, after the steam and solution are mixed for heat exchange, chloride ions in the solution will be entrained in the steam, and the leaked steam will permeate the workshop. The chloride ions in the steam will cause serious corrosion to the equipment and steel structures in the workshop, affecting their service life.

[0006] The utility model aims to solve the problem that steam leaks from the gap between the stirring rod and the tank body of the existing hot dissolving tank, resulting in incomplete dissolution of potassium chloride and corrosion of equipment. Utility Model Content

[0007] In order to solve the above problems, the utility model provides a hot melt tank, including a tank body 1, a stirring device 2 and a sealing device. The tank body 1 is arranged vertically, a stirring port 11 is arranged on the top, and a hot melt cavity 12 is formed inside. The stirring device 2 includes a motor 21 and a stirring rod 22, and the motor 21 is arranged above the tank body 1. The sealing device includes a sealing box 3 and two sealing members 4. The sealing box 3 is fixedly arranged on the top of the tank body 1 by a fastener 5, and the upper part is open. A sealing cover 6 is arranged at the opening, and a sealing cavity 33 is formed inside. A first through hole 34 matching the stirring rod 22 is arranged on the bottom plate of the sealing box 3, and a second through hole 63 matching the stirring rod 22 is arranged on the sealing cover 6.

[0008] The seal 4 is arranged in the sealing box 3, and includes a telescopic structure 41 and a flame retardant rock wool block 47. One end of the telescopic structure 41 is fixedly connected to the inner wall of the sealing box 3, and the other end extends toward the middle of the sealing cavity 33. The flame retardant rock wool block 47 matches the sealing cavity 33, and can be slidably arranged in the sealing cavity 33, and is fixedly connected to one end of the telescopic structure 41 facing the middle of the sealing cavity 33. The flame retardant rock wool blocks 47 on the two seals 4 abut against each other. The stirring rod 22 is arranged vertically, and the upper end is fixedly connected to the rotating shaft of the motor 21, and the lower end passes through the first through hole 34, the second through hole 63 and the stirring port 11 to extend into the hot dissolution cavity 12, and a stirring blade 23 is arranged at the end.

[0009] The utility model sets a sealing device on the top of the tank body 1, wherein the sealing device includes a sealing box 3 and two sealing members 4 relatively arranged in the sealing box 3, and the sealing box 3 is fixedly set on the top of the tank body 1. The sealing member 4 includes a telescopic structure 41 and a flame retardant rock wool block 47, and one end of the telescopic structure 41 is fixedly connected to the inner wall of the sealing box 3, and the other end is fixedly connected to the flame retardant rock wool block 47. The flame retardant rock wool block 47 on the sealing plate 45 can be pushed to move toward the middle of the sealing cavity 33 by the telescopic structure 41, so that the flame retardant rock wool blocks 47 on the two sealing members 4 clamp the stirring rod 22, and seal the gap between the stirring rod 22 and the stirring port 11 and the first connecting port bracket to prevent steam leakage. The problem of steam leakage in the gap between the stirring rod 22 and the tank body 1 of the existing hot dissolution tank, resulting in incomplete dissolution of potassium chloride and corrosion of equipment can be solved.

[0010] Preferably, the telescopic structure 41 includes a connecting plate 42, a positioning rod 43, a sealing spring 44 and a sealing plate 45. The connecting plate 42 is fixedly connected to the inner wall of the sealing box 3 through a connecting block 46. The positioning rod 43 includes a fixed tube 431 and a telescopic rod 432. The fixed tube 431 is horizontally arranged, one end of which is fixedly connected to the connecting plate 42, and the other end extends toward the middle of the sealing cavity 33. The telescopic rod 432 matches the fixed tube 431, one end of which can be slidably inserted into the fixed tube 431, and the other end extends to the outside of the fixed tube 431. The sealing plate 45 is fixedly arranged at the other end of the telescopic rod 432, and the sealing spring 44 is sleeved on the positioning rod 43, and the two ends are respectively abutted against the connecting plate 42 and the sealing plate 45.

[0011] The positioning rod 43 includes a fixed tube 431 and a telescopic rod 432. The fixed tube 431 is fixedly connected to the connecting plate 42. The telescopic rod 432 can be slidably inserted into the fixed tube 431. The sealing spring 44 is sleeved on the positioning rod 43, and its two ends are respectively abutted against the connecting plate 42 and the sealing plate 45. The sealing spring 44 can be positioned by the positioning rod 43 to prevent the sealing spring 44 from twisting and tilting. The elastic force of the sealing spring 44 can push the flame-retardant rock wool block 47 on the sealing plate 45 to move toward the middle of the sealing cavity 33, so that the flame-retardant rock wool blocks 47 on the two sealing components 4 clamp the stirring rod 22, and seal the gap between the stirring rod 22 and the stirring port 11 and the first through hole 34 to prevent steam leakage.

[0012] Preferably, the fastener 5 comprises a fastening plate 51, a fastening screw 52 and a fastening nut 53. The fastening plate 51 is horizontally arranged on the outer wall of the sealing box 3, and a fastening hole is arranged on the fastening plate 51. The fastening screw 52 is vertically arranged on the top of the tank body 1, the lower end of which is fixedly connected to the tank body 1, and the upper end of which passes through the fastening hole and extends to the top of the fastening plate 51. The fastening nut 53 is sleeved on the upper end of the fastening screw 52 to press the fastening plate (51) downward.

[0013] The fastener 5 includes a fastening plate 51, a fastening screw 52 and a fastening nut 53. The fastening plate 51 is arranged on the outer wall of the sealing box 3, and the fastening screw 52 is vertically arranged on the top of the tank body 1. The fastening nut 53 is inserted through the fastening hole and sleeved on the upper end of the fastening screw 52. The fastening nut 53 can be screwed to press the fastening plate 51 downward, so that the sealing box 3 can be fixed to the top of the tank body 1, so that the bottom surface of the sealing box 3 and the top surface of the tank body 1 are pressed and sealed.

[0014] Preferably, the sealing box 3 is square, and a square sealing cavity 33 is formed inside. Setting the sealing box 3 to be square can improve the sealing between the sealing box 3 and the tank body 1, and is convenient for installation. The square sealing cavity 33 formed inside can facilitate the sliding of the flame-retardant rock wool block 47, thereby clamping the stirring rod 22.

[0015] Preferably, the sealed box 3 is composed of a left box body 31 and a right box body 32 which are relatively connected, and the left box body 31 and the right box body 32 have the same structure, and the left box body 31 and the right box body 32 are connected by a connector 7. The sealed cover 6 includes a left cover body 61 and a right cover body 62, and the left cover body 61 and the right cover body 62 have the same structure. The left side of the left cover body 61 is hinged to the left side wall of the left box body 31, and the right side of the right cover body 62 is hinged to the right side wall of the right box body 32.

[0016] The sealing box 3 is composed of a left box body 31 and a right box body 32 connected relatively to each other, so that the sealing box 3 can be conveniently installed on the tank body 1, and the sealing box 3 can be conveniently disassembled to repair and replace the internal sealing member 4.

[0017] Preferably, the connecting member 7 includes a connecting bolt 71 and two connecting plates 72, the connecting plates 72 are provided with connecting holes, and the two connecting plates 72 are respectively arranged on the left box body 31 and the right box body 32. The connecting bolt 71 passes through the connecting holes on the two connecting plates 72 to fix the left box body 31 and the right box body 32 together.

[0018] The connecting member 7 includes a connecting bolt 71 and a connecting plate 72. The two connecting plates 72 are respectively arranged on the left box body 31 and the right box body 32. The left box body 31 and the right box body 32 are fixedly connected by passing the connecting bolt 71 through the two connecting plates 72. This can not only make the connection between the left box body 31 and the right box body 32 more firmly, but also facilitate the disassembly and assembly of the sealed box 3.

[0019] Preferably, a flame retardant rock wool layer 35 is provided on the inner wall of the sealed box 3 .

[0020] Preferably, both the left cover 61 and the right cover 62 are provided with a handle 64. The handle 64 can be used to conveniently open the left cover 61 and the right cover 62.

[0021] Preferably, a sealing gasket 36 is provided between the bottom of the sealing box 3 and the top of the tank body 1. The sealing gasket 36 can make the sealing between the sealing box 3 and the tank body 1 more tightly, preventing steam from leaking from the gap between the sealing box 3 and the tank body 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 .Schematic diagram of the overall structure of the hot melt tank;

[0023] Figure 2 . Schematic diagram of the internal structure of the tank;

[0024] Figure 3 . Figure 2 The enlarged schematic diagram at A in the middle;

[0025] Figure 4 .Schematic diagram of the front structure of the sealing device;

[0026] Figure 5 .Schematic diagram of the top structure of the sealing device;

[0027] Figure 6 .Schematic diagram of the internal structure of the box.

[0028] In the figure, 1. tank body, 11. stirring port, 12. hot dissolving chamber, 13. feed port, 14. liquid inlet, 15. steam pipe, 16. overflow pipe, 17. discharge port, 18. support leg, 19. air outlet, 2. stirring device, 21. motor, 22. stirring rod, 23. stirring blade, 3. sealing box, 31. left box body, 32. right box body, 33. sealing chamber, 34. first through hole, 35. flame retardant rock wool layer, 36. sealing pad, 4. sealing member, 4 1. Telescopic structure, 42. Connecting plate, 43. Positioning rod, 431. Fixed cylinder 431, 432. Telescopic rod 432, 44. Sealing spring, 45. Sealing plate, 46. Connecting block, 47. Flame retardant rock wool block, 5. Fastener, 51. Fastening plate, 52. Fastening screw, 53. Fastening nut, 6. Sealing cover, 61. Left cover body, 62. Right cover body, 63. Second through hole, 64. Handle, 7. Connector, 71. Connecting bolt, 72. Connecting piece. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] like Figure 1 and Figure 2 As shown, the hot melt tank includes a tank body 1, a stirring device 2 and a sealing device. The tank body 1 is vertically arranged, and a stirring port 11, a feed port 13, a liquid inlet 14 and an air outlet 19 are arranged on the top, and a discharge port 17, a steam pipe 15, an overflow pipe 16 and a supporting leg 18 are arranged on the bottom, and a hot melt cavity 12 is formed inside.

[0031] The stirring port 11 is arranged at the center of the top of the tank body 1. The feed port 13 is used to add potassium salt material into the hot dissolving chamber 12. The liquid inlet 14 is used to connect with the fresh water pipe to add fresh water into the hot dissolving chamber 12.

[0032] The gas outlet 19 is used to communicate with the condensate tank to discharge the remaining steam after heat exchange with the solution for recycling. The discharge port 17 is used to discharge the waste residue at the bottom of the hot dissolving chamber 12. One end of the steam pipe 15 is inserted into the bottom of the hot dissolving chamber 12, and a steam nozzle is provided at the end, and the steam pipe 15 is connected.

[0033] The overflow pipe 16 is vertically arranged, with one end located in the hot dissolving chamber 12 and the other end passing through the tank body 1 and extending to the outside of the tank body 1 for communicating with the thickener and discharging the solution after the potassium salt is dissolved into the thickener.

[0034] The stirring device 2 includes a motor 21 and a stirring rod 22. The motor 21 is arranged above the tank body 1. The stirring rod 22 is arranged vertically. The upper end is fixedly connected to the rotating shaft of the motor 21, and the lower end passes through the sealing device and the stirring port 11 to extend into the hot melting chamber 12. A stirring blade 23 is arranged at the lower end.

[0035] When the hot dissolving tank is working, sylvite enters the hot dissolving chamber 12 from the feed port 13, and fresh water enters the hot dissolving chamber 12 from the liquid inlet 14. The steam in the steam pipe 15 is evenly sprayed into the solution in the hot dissolving chamber 12 through the steam nozzle for heating. Under the stirring action of the stirring device 2, potassium chloride in the sylvite is dissolved in the fresh water, and sodium chloride exists in the saturated potassium chloride solution as a solid phase. The saturated potassium chloride solution in the upper layer overflows into the thickener from the overflow pipe 16, and the steam after heat exchange is discharged from the gas outlet 19 and recovered.

[0036] like Figure 3 and Figure 5 As shown, the sealing device includes a sealing box 3 and two sealing members 4 arranged in the sealing box 3. The sealing box 3 is fixed to the top of the tank body 1 by a fastener 5. The sealing box 3 is square, with an upper opening, and the opening is sealed by a sealing cover 6. A square sealing cavity 33 is formed inside. A first through hole 34 matching the stirring rod 22 is arranged on the bottom plate of the sealing box 3, and a second through hole 63 matching the stirring rod 22 is arranged on the sealing cover 6. A flame-retardant rock wool layer 35 is arranged on the side wall of the sealing cavity 33.

[0037] A first through hole 34 matching with the stirring rod 22 is provided on the bottom plate of the sealing box 3, wherein matching means that the diameter of the first through hole 34 is equal to or slightly larger than the diameter of the stirring rod 22, so that the stirring rod 22 can pass through the first through hole 34 and can rotate freely along the axis.

[0038] The sealing cover 6 is provided with a second through hole 63 matching with the stirring rod 22 , wherein matching means that the diameter of the second through hole 63 is equal to or slightly larger than the diameter of the stirring rod 22 , so that the stirring rod 22 can pass through the second through hole 63 and can rotate freely along the axis.

[0039] A sealing pad 36 is provided between the bottom of the sealed box 3 and the top of the tank body 1. The sealing pad 36 can make the sealing between the sealed box 3 and the tank body 1 more tight, preventing steam from leaking from the gap between the sealed box 3 and the tank body 1.

[0040] The upper end of the stirring rod 22 is fixedly connected to the rotating shaft of the motor 21 , and the lower end thereof passes through the first through hole 34 and the second through hole 63 of the sealing device and extends into the hot dissolving chamber 12 .

[0041] The sealing member 4 is arranged in the sealing box 3 , and comprises a telescopic structure 41 and a flame retardant rock wool block 47 . One end of the telescopic structure 41 is fixedly connected to the inner wall of the sealing box 3 , and the other end extends toward the middle of the sealing cavity 33 .

[0042] The flame retardant rock wool block 47 matches the sealed cavity 33 and can be slidably disposed in the sealed cavity 33 . The bottom surface of the flame retardant rock wool block 47 is in contact with the bottom surface of the sealed cavity 33 .

[0043] One end of the telescopic structure 41 facing the middle of the sealing cavity 33 is fixedly connected. The flame retardant rock wool blocks 47 on the two sealing members 4 abut against each other.

[0044] The flame retardant rock wool block 47 matches the sealed cavity 33, where matching means that the cross section of the flame retardant rock wool block 47 is the same shape and size as the cross section of the sealed cavity 33, so that after the sealing cover 6 is covered on the upper end of the box body, the flame retardant rock wool block 47 can slide in the sealed cavity 33, and the bottom surface of the flame retardant rock wool block 47 fits with the bottom surface of the sealed cavity 33 to seal the gap between the stirring rod 22 and the first through hole 34.

[0045] like Figure 3 and Figure 6 As shown, the telescopic structure 41 includes a connecting plate 42 , a positioning rod 43 , a sealing spring 44 and a sealing plate 45 . The connecting plate 42 is fixedly connected to the inner wall of the sealing box 3 via a connecting block 46 .

[0046] The positioning rod 43 includes a fixed tube 431431 and a telescopic rod 432432. The fixed tube 431 is horizontally arranged and extends in the left-right direction. One end of the fixed tube 431 is fixedly connected to the connecting plate 42 and the other end extends toward the middle of the sealing cavity 33.

[0047] The telescopic rod 432 matches the fixed tube 431 , one end of which can be slidably inserted into the fixed tube 431 , and the other end of which extends to the outside of the fixed tube 431 .

[0048] The telescopic rod 432 matches with the fixed tube 431 , wherein matching means that the diameter of the telescopic rod 432 is equal to or slightly smaller than the inner diameter of the fixed tube 431 , so that the telescopic rod 432 can be inserted into the fixed tube 431 and slide inside the fixed tube 431 .

[0049] The sealing plate 45 is fixedly arranged at one end of the telescopic rod 432 located outside the fixing tube 431. The sealing spring 44 is sleeved on the positioning rod 43, and its two ends are respectively in contact with the connecting plate 42 and the sealing plate 45.

[0050] Therefore, the sealing spring 44 can be positioned by the positioning rod 43 to prevent the sealing spring 44 from twisting and tilting, and the elastic force of the sealing spring 44 can push the flame retardant rock wool block 47 on the sealing plate 45 to move toward the middle of the sealing chamber 33, so that the flame retardant rock wool blocks 47 on the two sealing components 4 clamp the stirring rod 22, and seal the gap between the stirring rod 22 and the stirring port 11 and the first through hole 34, thereby preventing steam from leaking through the stirring port 11 and the first through hole 34.

[0051] like Figure 4 and Figure 5 As shown, the sealed box 3 is composed of a left box body 31 and a right box body 32 which are relatively connected. The left box body 31 and the right box body 32 have the same structure. Connectors 7 are provided on the front and rear sides of the left box body 31 and the right box body 32, and are connected through the connector 7.

[0052] A sealing member 4 is disposed in each of the left box body 31 and the right box body 32 .

[0053] The sealing box 3 is composed of a left box body 31 and a right box body 32 which are relatively connected. The sealing box 3 can be conveniently installed on the top of the tank body 1 and wrapped around the outer periphery of the stirring rod 22. The sealing box 3 can also be conveniently disassembled to repair and replace the seal 4 inside the sealing box 3.

[0054] The sealing cover 6 includes a left cover body 61 and a right cover body 62. The left cover body 61 and the right cover body 62 have the same structure. The left side of the left cover body 61 is hinged to the left side wall of the left box body 31, and the right side of the right cover body 62 is hinged to the right side wall of the right box body 32.

[0055] The left cover body 61 and the right cover body 62 are fixedly connected by connecting devices such as latches and buckles, which are not shown in the figure.

[0056] The left cover 61 and the right cover 62 are both provided with a handle 64. The left cover 61 and the right cover 62 can be opened conveniently by the handle 64.

[0057] The connecting member 7 includes a connecting bolt 71 and two connecting plates 72. The connecting plates 72 are provided with connecting holes. The two connecting plates 72 are respectively arranged on the left box body 31 and the right box body 32. The connecting bolt 71 passes through the connecting holes on the two connecting plates 72 to fix the left box body 31 and the right box body 32 together.

[0058] The connecting member 7 includes a connecting bolt 71 and a connecting plate 72. The two connecting plates 72 are respectively arranged on the left box body 31 and the right box body 32. The left box body 31 and the right box body 32 are fixedly connected by passing the connecting bolt 71 through the two connecting plates 72. This can not only make the connection between the left box body 31 and the right box body 32 more firmly, but also facilitate the disassembly and assembly of the sealed box 3.

[0059] like Figure 4 and Figure 5 As shown, the left box body 31 and the right box body 32 are fixedly connected to the top of the tank body 1 by two fasteners 5. The fastener 5 includes a fastening plate 51, a fastening screw 52 and a fastening nut 53. The fastening plate 51 is horizontally arranged on the outer side wall of the sealed box 3, and a fastening hole is arranged on the fastening plate 51.

[0060] The fastening screw 52 is vertically arranged on the top of the tank body 1 , with the lower end fixedly connected to the tank body 1 and the upper end extending through the fastening hole to above the fastening plate 51 . The fastening nut 53 is sleeved on the upper end of the fastening screw 52 .

[0061] The fastener 5 includes a fastening plate 51, a fastening screw 52 and a fastening nut 53. The fastening plate 51 is arranged on the outer wall of the sealing box 3, and the fastening screw 52 is vertically arranged on the top of the tank body 1. The fastening nut 53 is inserted through the fastening hole and is sleeved on the upper end of the fastening screw 52. The fastening nut 53 is screwed to press the fastening plate 51 downward, thereby fixing the sealing box 3 on the top of the tank body 1, so that the bottom surface of the sealing box 3 and the top surface of the tank body 1 are pressed and sealed.

[0062] The utility model sets a sealing device on the top of the tank body 1, and the flame-retardant rock wool block 47 on the sealing plate 45 can be pushed to move to the middle of the sealing cavity 33 through the telescopic structure 41, so that the flame-retardant rock wool blocks 47 on the two sealing members 4 clamp the stirring rod 22, and seal the gap between the stirring rod 22 and the stirring port 11 and the first connecting port bracket to prevent steam leakage. The problem of steam leakage in the gap between the stirring rod 22 and the tank body 1 of the existing hot dissolution tank, resulting in incomplete dissolution of potassium chloride and corrosion of equipment can be solved.

[0063] The positioning rod 43 includes a fixed tube 431 and a telescopic rod 432. The fixed tube 431 is fixedly connected to the connecting plate 42. The telescopic rod 432 can be slidably inserted into the fixed tube 431. The sealing spring 44 is sleeved on the positioning rod 43. The sealing spring 44 can be positioned by the positioning rod 43 to prevent the sealing spring 44 from twisting and tilting. The elastic force of the sealing spring 44 can push the flame-retardant rock wool block 47 on the sealing plate 45 to move toward the middle of the sealing cavity 33, so that the flame-retardant rock wool blocks 47 on the two sealing components 4 clamp the stirring rod 22, and seal the gap between the stirring rod 22 and the stirring port 11 and the first through hole 34 to prevent steam leakage.

[0064] The fastener 5 includes a fastening plate 51, a fastening screw 52 and a fastening nut 53. The fastening plate 51 is set on the outer wall of the sealing box 3, and the fastening screw 52 is vertically set on the top of the tank body 1. The fastening nut 53 is sleeved on the upper end of the fastening screw 52 through the fastening hole. The fastening plate 51 can be pressed downward by screwing the fastening nut 53, and the sealing box 3 can be fixed on the top of the tank body 1, so that the bottom surface of the sealing box 3 and the top surface of the tank body 1 are pressed and sealed. The sealing box 3 is composed of a left box body 31 and a right box body 32 connected relatively to each other, which can facilitate the installation of the sealing box 3 on the tank body 1, and the disassembly of the sealing box 3 can facilitate the maintenance and replacement of the internal seal 4.

[0065] The connecting member 7 includes a connecting bolt 71 and a connecting piece 72. The two connecting pieces 72 are respectively arranged on the left box body 31 and the right box body 32. The left box body 31 and the right box body 32 are fixedly connected by the connecting bolt 71 passing through the two connecting pieces 72, which not only makes the connection between the left box body 31 and the right box body 32 more firmly, but also facilitates the disassembly and assembly of the sealed box 3. A sealing gasket 36 is arranged between the bottom of the sealed box 3 and the top of the tank body 1, which can make the sealing between the sealed box 3 and the tank body 1 more tightly and prevent steam from leaking from the gap between the sealed box 3 and the tank body 1.

[0066] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A hot melt tank, characterized in that: It comprises a tank body (1), a stirring device (2) and a sealing device. The tank body (1) is arranged vertically, a stirring port (11) is arranged on the top, and a hot melting cavity (12) is formed inside; The stirring device (2) comprises a motor (21) and a stirring rod (22), and the motor (21) is arranged above the tank body (1); The sealing device comprises a sealing box (3) and two sealing members (4). The sealing box (3) is fixedly arranged on the top of the tank body (1) by means of a fastener (5), has an opening at the top, is provided with a sealing cover (6) at the opening, and has a sealing cavity (33) formed inside, and a first through hole (34) matching the stirring rod (22) is provided on the bottom plate of the sealing box (3); The sealing cover (6) is provided with a second through hole (63) matching the stirring rod (22); The sealing member (4) is arranged in the sealing box (3), and comprises a telescopic structure (41) and a flame-retardant rock wool block (47). One end of the telescopic structure (41) is fixedly connected to the inner wall of the sealing box (3), and the other end extends toward the middle of the sealing cavity (33); The flame retardant rock wool block (47) matches the sealed cavity (33), can be slidably disposed in the sealed cavity (33), and is fixedly connected to one end of the telescopic structure (41) facing the middle of the sealed cavity (33); The flame-retardant rock wool blocks (47) on the two sealing members (4) abut against each other; The stirring rod (22) is arranged vertically, with the upper end fixedly connected to the rotating shaft of the motor (21), the lower end extending through the first through hole (34), the second through hole (63) and the stirring port (11) to the hot melting chamber (12), and the end portion is provided with a stirring blade (23).

2. The hot melt tank according to claim 1, characterized in that: The telescopic structure (41) comprises a connecting plate (42), a positioning rod (43), a sealing spring (44) and a sealing plate (45). The connecting plate (42) is fixedly connected to the inner wall of the sealing box (3) via a connecting block (46); The positioning rod (43) comprises a fixing tube (431) and a telescopic rod (432). The fixed tube is arranged horizontally, one end of which is fixedly connected to the connecting plate (42), and the other end of which extends toward the middle of the sealing cavity (33); The telescopic rod (432) matches the fixed tube (431), one end of which can be slidably inserted into the fixed tube (431), and the other end of which extends to the outside of the fixed tube (431); The sealing plate (45) is fixedly arranged on the other end of the telescopic rod (432); The sealing spring (44) is sleeved on the positioning rod (43), and its two ends are respectively in contact with the connecting plate (42) and the sealing plate (45).

3. The hot melt tank according to claim 2, characterized in that: The fastener (5) comprises a fastening plate (51), a fastening screw (52) and a fastening nut (53). The fastening plate (51) is horizontally arranged on the outer side wall of the sealing box (3), and a fastening hole is arranged on the fastening plate (51); The fastening screw (52) is vertically arranged on the top of the tank body (1), with the lower end fixedly connected to the tank body (1) and the upper end extending through the fastening hole to above the fastening plate (51); The fastening nut (53) is sleeved on the upper end of the fastening screw rod (52) to press the fastening plate (51) downward.

4. The hot melt tank according to claim 3, characterized in that: The sealing box (3) is square in shape and has a square sealing cavity (33) formed inside.

5. The hot melt tank according to claim 4, characterized in that: The sealed box (3) is composed of a left box body (31) and a right box body (32) which are relatively connected. The left box (31) and the right box (32) have the same structure, and the left box (31) and the right box (32) are connected by a connecting piece (7); The sealing cover (6) comprises a left cover body (61) and a right cover body (62), and the left cover body (61) and the right cover body (62) have the same structure; The left side of the left cover (61) is hinged to the left side wall of the left box (31); The right side of the right cover body (62) is hinged to the right side wall of the right box body (32).

6. The hot melt tank according to claim 5, characterized in that: The connecting member (7) comprises a connecting bolt (71) and two connecting plates (72). The connecting piece (72) is provided with a connecting hole. The two connecting pieces (72) are respectively arranged on the left box body (31) and the right box body (32) in a relatively manner; The connecting bolts (71) pass through the connecting holes on the two connecting plates (72) to fix the left box body (31) and the right box body (32) together.

7. The hot melt tank according to claim 6, characterized in that: A flame-retardant rock wool layer (35) is provided on the inner wall of the sealed box (3).

8. The hot melt tank according to claim 7, characterized in that: The left cover body (61) and the right cover body (62) are both provided with handles (64).

9. The hot melt tank according to any one of claims 1 to 8, characterized in that: A sealing gasket (36) is provided between the bottom of the sealing box (3) and the top of the tank body (1).

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