Drum-type glyoxylic acid crystallization and granulation equipment

Abstract

The utility model discloses drum-type glyoxylic acid crystallization and granulation equipment which comprises a rack, the roller comprises a roller wall, and a roller cavity is formed in the roller wall; the driving mechanism is used for driving the roller to rotate around the axis of the roller; the feeding mechanism is arranged at one end of the roller in the axial direction of the roller; the discharging mechanism is arranged at the other end of the roller in the axial direction of the roller; the cooling mechanism is used for conveying cold air into the barrel cavity so as to cool the glyoxylic acid particles in the barrel cavity; a mixed crystallization area section, a material guide area section and a granulation cooling section are sequentially formed in the cylinder cavity from one end close to the feeding mechanism to one end close to the discharging mechanism, and a plurality of material raising plates are arranged on the inner side wall of the cylinder wall of the granulation cooling section. By applying the glyoxylic acid crystallization and granulation device, the problems of complex structure, multiple working procedures, low granulation efficiency and the like of the existing glyoxylic acid crystallization and granulation equipment can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization and molding of chemical products, in particular to crystallization and granulation equipment for chemical products, and more particularly to a drum-type glyoxylic acid crystallization and granulation equipment. Background Art

[0002] Glyoxylic acid is an important organic chemical intermediate and is widely used in the fields of spices, medicine, paint, papermaking, fine chemicals, etc.

[0003] In order to obtain glyoxylic acid crystalline particles, the prior art uses a drum granulation device, in which a glyoxylic acid solution and seed crystals are added to the drum granulation device, and the glyoxylic acid solution and seed crystals are gradually hardened and crystallized during the rotation of the drum. The crystallized particles are guided from the granulation device to a cooler for cooling, becoming hardened crystals, and then transported to a screening machine for screening.

[0004] The prior art uses a drum-type granulation device, which can achieve crystallization of glyoxylic acid in a short time. However, the crystallized particles need to be cooled in a cooler, which not only requires a cooler, but also makes the preparation equipment of glyoxylic acid particles complicated in structure and high in cost. In addition, the process is increased, which easily causes the glyoxylic acid particles to absorb moisture and volatilize. The increase in the process increases the turnover time and cost, and also reduces the amount of glyoxylic acid particles prepared, resulting in low granulation efficiency. Summary of the invention

[0005] The utility model aims to provide a drum type glyoxylic acid crystallization granulation device to solve the problems of the existing glyoxylic acid crystallization granulation device, such as complex structure, multiple processes, low granulation efficiency, etc.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A drum-type glyoxylic acid crystallization granulation device, comprising:

[0008] frame;

[0009] The drum comprises a drum wall, wherein a drum cavity is formed in the drum wall;

[0010] A driving mechanism, used for driving the drum to rotate around its axis;

[0011] A feeding mechanism, which is arranged at one end of the drum along the axial direction of the drum and is used to feed the crystallization and granulation materials into the drum cavity;

[0012] A discharging mechanism, which is arranged at the other end of the drum along the axial direction of the drum and is used to discharge the glyoxylic acid particles from the drum cavity;

[0013] A cooling mechanism, used for delivering cold air into the barrel cavity to cool the glyoxylic acid particles in the barrel cavity;

[0014] The barrel cavity sequentially forms a mixed crystallization section, a material guiding section and a granulation cooling section from one end close to the feeding mechanism to one end close to the discharging mechanism, and a plurality of lifting plates are arranged on the inner side wall of the barrel wall of the granulation cooling section.

[0015] In some embodiments of the present application, the cooling mechanism includes:

[0016] A cold air conveying device, which is arranged outside the drum;

[0017] A cold air input end, which is arranged on the discharge mechanism and is used to connect the cold air conveying device and the cylinder cavity;

[0018] The cold air output end is arranged on the feeding mechanism and is communicated with the cylinder cavity.

[0019] In some embodiments of the present application, an anti-sticking layer is provided on the inner side wall of the cylinder wall of the mixed crystallization zone.

[0020] In some embodiments of the present application, a spirally arranged material guide plate is provided on the inner side wall of the cylinder wall of the material guide zone section, and the material guide plate guides the crystallized material of the mixed crystallization zone section into the granulation cooling section.

[0021] In some embodiments of the present application, the feeding mechanism includes:

[0022] A feed box, which is slidably connected to the drum;

[0023] a seed crystal inlet formed on the feed box;

[0024] A seed feeding pipe, which extends from the seed inlet into the barrel cavity and does not contact the barrel wall, one end of which is connected to the seed inlet and the other end of which forms a seed feeding pipe outlet located in the mixed crystallization zone;

[0025] a solution inlet formed on the feed box;

[0026] A solution feed pipe extends from the solution inlet into the barrel cavity and does not contact the barrel wall. One end of the solution feed pipe is connected to the solution inlet, and the other end forms a closed end located in the mixed crystallization zone. A plurality of spray holes are formed on the wall of the solution feed pipe located in the barrel cavity.

[0027] In some embodiments of the present application, the discharging mechanism includes:

[0028] A discharge box, which is slidably connected to the drum;

[0029] A discharge port is formed on the bottom surface of the discharge box.

[0030] In some embodiments of the present application, the device further includes:

[0031] An operation port formed on a side of the discharge box;

[0032] An operating door, which is arranged on the operating opening and is used to open / close the operating opening;

[0033] A sight mirror is formed on the operating door.

[0034] In some embodiments of the present application, the device further includes:

[0035] A digging hopper is arranged in the cylinder cavity and close to the discharging mechanism.

[0036] In some embodiments of the present application, the driving mechanism includes:

[0037] A motor, which is arranged on the frame;

[0038] A reducer connected to the motor;

[0039] A gear connected to the reducer;

[0040] A gear ring is arranged on the outer side of the cylinder wall and meshes with the gear.

[0041] In some embodiments of the present application, the device further includes:

[0042] A supporting wheel assembly, which is arranged on the frame;

[0043] A rolling ring is arranged on the outer side of the cylinder wall and is matched with the supporting wheel assembly.

[0044] Compared with the prior art, the advantages and positive effects of the utility model are:

[0045] The utility model provides a drum type glyoxylic acid crystallization granulation device, which is provided with a drum and a cooling mechanism for conveying cold air into a drum cavity of the drum, wherein a mixed crystallization region section, a material guiding region section and a granulation cooling region are formed in the drum cavity of the drum, and a plurality of lifting plates are arranged on the inner wall of the drum wall of the granulation cooling region. After the crystallization granulation material enters the drum cavity, it is uniformly and rapidly mixed and crystallized in the mixed crystallization region section as the drum rolls, and the crystallized material is rapidly introduced into the granulation cooling region through the material guiding region section, and the material is sprinkled through the lifting plates in the granulation cooling region, and is further crystallized and solidified under the cooling of the cold air conveyed by the cooling mechanism, so as to form glyoxylic acid crystal particles with uniform size and shape and meeting the requirements, and are output from a discharging mechanism, and the outputted crystal particles can be directly screened without further cooling. By utilizing the cooperation of the lifting plate and the cooling mechanism in the drum granulating equipment, it is possible to obtain glyoxylic acid crystal particles that meet the requirements and can be directly screened and processed without the need for a cooler, thereby simplifying the structure of the glyoxylic acid crystal granulating equipment, reducing the process equipment, reducing the time and product loss caused by the circulation in the process equipment, and improving the efficiency of the glyoxylic acid crystal granulating.

[0046] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 This is one of the three-dimensional diagrams of an embodiment of the drum-type glyoxylic acid crystallization and granulation equipment of the utility model;

[0049] Figure 2 This is the second stereogram of an embodiment of the drum-type glyoxylic acid crystallization and granulation equipment of the utility model;

[0050] Figure 3 The utility model is a schematic diagram of the internal structure of an embodiment of the drum-type glyoxylic acid crystallization granulation equipment.

[0051] In the above figures, the reference numerals and their corresponding component names are as follows:

[0052] 1. Frame;

[0053] 2. Roller; 21. Mixing crystallization area; 22. Material guide area; 221. Material guide plate; 23. Granulation cooling section; 231. Material lifting plate;

[0054] 3. Driving mechanism; 31. Motor; 32. Speed ​​reducer; 33. Gear; 34. Ring gear;

[0055] 4. Feed mechanism; 41. Feed box; 42. Seed inlet; 43. Seed feed pipe; 431. Seed pipe outlet; 44. Solution inlet; 45. Solution feed pipe; 451. Closed end; 452. Spray hole;

[0056] 5. Discharging mechanism; 51. Discharging box; 52. Discharging port; 53. Operating door; 54. Viewing mirror;

[0057] 61. Cold air input terminal; 62. Cold air output terminal;

[0058] 7. Digging hopper;

[0059] 81. Support wheel assembly; 82. Roller ring. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0061] It should be noted that, in the description of the present invention, terms such as "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0064] Figures 1 to 3 An embodiment of the drum-type glyoxylic acid crystallization granulation equipment of the utility model is shown, wherein: Figure 1 and Figure 2 are two stereoscopic views of the embodiment, specifically, stereoscopic views of the embodiment viewed from the front and rear angles, Figure 3 It is a schematic diagram of part of the internal structure of this embodiment.

[0065] like Figures 1 to 3 As shown, the drum-type glyoxylic acid crystallization granulation equipment of this embodiment includes a frame 1, a drum 2, a driving mechanism 3, a feeding mechanism 4, a discharging mechanism 5 and a cooling mechanism.

[0066] The rack 1 serves as a supporting frame of the equipment and is used to support other mechanisms that need to be supported in the equipment.

[0067] The drum 2 is supported by the frame 1 and is disposed transversely, with its axis parallel to the ground or in an inclined shape with one end high and the other end low. The drum 2 includes a drum wall, and a drum cavity is formed in the drum wall.

[0068] The driving mechanism 3 is supported by the frame 1 and connected to the drum 2, and is used to drive the drum 2 to rotate around its own axis.

[0069] The feeding mechanism 4 is arranged at one end of the drum 2 along the circumferential direction of the drum 2, for example, Figure 1 In the view shown, the feeding mechanism 4 is located at the right end of the drum 2. The feeding mechanism 4 is connected to the barrel cavity of the drum 2, and the crystallization and granulation materials are fed into the barrel cavity through the feeding mechanism 4.

[0070] The discharging mechanism 5 is arranged at the other end of the drum 2 along the circumferential direction of the drum 2, specifically at the other end opposite to the feeding mechanism 4. Figure 1 In the view shown, the discharging mechanism 5 is located at the left end of the drum 2. The discharging mechanism 5 is connected to the cylinder cavity of the drum 2, and the glyoxylic acid particles after crystallization and granulation are discharged from the cylinder cavity through the discharging mechanism 5.

[0071] The cylinder cavity of the drum 2 sequentially forms a mixed crystallization section 21, a material guiding section 22 and a granulation cooling section 23 from one end close to the feeding mechanism 4 to one end close to the discharging mechanism 5, and a plurality of lifting plates 231 are arranged on the inner side wall of the cylinder wall of the granulation cooling section 23. The plurality of lifting plates 231 are dispersedly arranged, and each lifting plate 231 extends from the inner side wall of the cylinder wall toward the axis of the drum 2 in the width direction, and extends along the axis direction of the drum 2 in the length direction.

[0072] The cooling mechanism is used to deliver cold air into the cylinder cavity of the drum 2 to cool the glyoxylic acid particles in the cylinder cavity.

[0073] After the crystallization granulation material enters the barrel cavity through the feeding mechanism 4, it is uniformly and quickly mixed and crystallized in the mixed crystallization area 21 as the drum 2 rolls, and the crystallized material is quickly introduced into the granulation cooling section 23 through the material guide area 22. During the rotation of the drum 2, the lifting plate 231 rotates with the drum 2 to lift and sprinkle the material in the granulation cooling section 23, which can break up the material and make the size and shape of the material uniform. The broken material is easy to contact with the cold air delivered by the cooling mechanism uniformly and over a large area, so that it is further quickly crystallized and solidified under the cooling of the cold air, forming glyoxylic acid crystal particles of uniform size and shape that meet the requirements, and the particles are output from the discharging mechanism 5. The output crystal particles can be directly screened without further cooling. By utilizing the cooperation between the lifting plate 231 and the cooling mechanism in the drum granulating equipment, it is possible to obtain glyoxylic acid crystalline particles that meet the requirements and can be directly screened and processed without the need for a cooler, thereby simplifying the structure of the glyoxylic acid crystallization granulation equipment, reducing the process equipment, reducing the time and product loss caused by the circulation in the process equipment, and improving the efficiency of glyoxylic acid crystallization granulation.

[0074] In some embodiments, the cooling mechanism includes a cold air conveying device (not shown in the figure), a cold air input end 61 and a cold air output end 62. The cold air conveying device is arranged outside the drum 2, and is used to convey cold air to the cold air input end 61. The cold air input end 61 is arranged on the discharging mechanism 5, and is connected to the cold air conveying device and the barrel cavity, specifically directly connected to the granulation cooling section 23 of the barrel cavity. The cold air output end 62 is arranged on the feeding mechanism 4, and is connected to the barrel cavity, specifically directly connected to the mixed crystallization area section of the barrel cavity. By arranging the cold air input end 61 on the discharging mechanism 5 and the cold air output end 62 on the feeding mechanism 4, the cold air first enters the granulation cooling section 23, and the cold air with a lower temperature directly cools the crystallized material, thereby improving the cooling effect of the crystallized material; the cold air after heat exchange with the crystallized material passes through the material guide area section 22 and the mixed crystallization area section 21 before being discharged, and the residual cold in the cold air is used to further cool the material in the crystallization, so that the cold air can be fully utilized and the energy utilization rate can be improved. Moreover, during the rotation of the drum 2, the feeding mechanism 4 and the discharging mechanism 5 can be set not to rotate with the drum 2, so the cooling mechanism arranged on the feeding mechanism 4 and the discharging mechanism 5 will not rotate with the drum 2 either. Therefore, during the rotation of the drum 2, the normal delivery of cold air by the cooling mechanism is not affected, thereby ensuring the cooling of the material and further ensuring the production efficiency of the equipment.

[0075] In some embodiments, an anti-sticking layer (not marked in the figure) is provided on the inner side wall of the cylinder wall of the mixed crystallization zone 21 to prevent the glyoxylic acid solution in the material from sticking. In some embodiments, the anti-sticking layer is a silica gel plate.

[0076] In some other embodiments, a plurality of guide plates 221 are provided on the inner wall of the cylinder wall of the guide area section 22, and the plurality of guide plates 221 are arranged in a spiral manner. The setting direction of each guide plate 221 is suitable for smoothly and quickly introducing the material in the mixed crystallization area section 21 into the granulation cooling section 23.

[0077] In some other embodiments, a hopper 7 is further provided in the cylinder cavity near the discharging mechanism 5. During the rotation of the drum 2, the hopper 7 guides the cooled glyoxylic acid particles into the discharging mechanism 5, so as to realize the smooth discharge of the materials.

[0078] In some embodiments, the feeding mechanism 4 includes a feeding box 41, on which a seed inlet 42 and a solution inlet 44 are formed. The feeding box 41 is supported by the frame 1 and is slidably connected to the drum 2, so that when the drum 2 rotates, the position of the feeding box 41 is fixed, and it will not rotate with the drum 2, and will not affect the normal feeding process. The feeding mechanism 4 also includes a seed feeding pipe 43 and a solution feeding pipe 45. Among them, the seed feeding pipe 43 extends from the seed inlet 42 into the barrel cavity, and does not contact the barrel wall, and will not interfere when the drum 2 rotates. The seed feeding pipe 43 is connected to the seed inlet 42, and the other end thereof forms a seed feeding pipe outlet 431 located in the mixed crystallization area section 21. After the glyoxylic acid seed is put into the seed inlet 42, it enters the seed feeding pipe 43, and finally enters the mixed crystallization area section 21 from the seed feeding pipe outlet 431. The solution feed pipe 45 extends from the solution inlet 44 into the barrel cavity and does not contact the barrel wall, so there is no interference when the drum 2 rotates. One end of the solution feed pipe 45 is connected to the solution inlet 44, and the other end thereof forms a closed end 451 located in the mixed crystallization zone 21, and a plurality of spray holes 452 are formed on the tube wall of the solution feed pipe 45 located in the barrel cavity. The glyoxylic acid solution is fed from the solution inlet 44, enters the solution feed pipe 45, and finally sprayed from the spray holes 452 to the mixed crystallization zone 21, and then mixed with the seed crystals in the mixed crystallization zone 21 for crystallization. The seed crystal inlet 42 and the solution inlet 44 can be formed on the top surface of the feed box 41 for easy feeding.

[0079] The discharging mechanism 5 includes a discharging box 51, which is supported by the frame 1 and slidably connected to the drum 2. Therefore, when the drum 2 rotates, the discharging box 51 is fixed in position and does not rotate with the drum 2, thereby not affecting the normal discharging process. A discharging port 52 is formed on the bottom surface of the discharging box 51, so that the cooled glyoxylic acid particles can be discharged from the discharging port 52.

[0080] In some embodiments, an operation port is formed on the side of the discharge box 51, and an operation door 53 is provided on the operation port to open / close the operation port, and a viewing mirror 54 is provided on the operation door 53. The operation port and the operation door 53 are provided to facilitate cleaning and maintenance of the equipment; the viewing mirror 54 is provided to facilitate viewing the internal state of the equipment through the viewing mirror 54.

[0081] In some embodiments, the cold air input end 61 of the cooling mechanism is formed on the discharge box 51, specifically on the top surface of the discharge box 51, to facilitate the layout of other structures on the entire discharge box 51; and the cold air output end 62 of the cooling mechanism is formed on the feed box 41, specifically on the side of the feed box 41, to facilitate the layout of other structures on the entire feed box 41.

[0082] In some other embodiments, sealing members (not marked in the figure) are provided between the feed box 41 and the drum 2 and between the discharge box 51 and the drum 2 to seal between the feed box and the drum 2 to prevent air leakage and material leakage.

[0083] In some embodiments, the driving mechanism 3 includes a motor 31 disposed on the frame 1, a reducer 32 connected to the motor, a gear 33 connected to the reducer 32, and a ring gear 34 disposed on the outer side of the drum wall of the drum 2, the ring gear 34 meshing with the gear 33. By controlling the motor 31, the rotation of the drum 2 can be controlled.

[0084] In some other embodiments, the device also includes a support wheel group 81 arranged on the frame 1 and a roller ring 82 arranged on the outer side of the cylinder wall of the drum 2. The roller ring 82 is adapted to the support wheel group 81 to constitute an auxiliary rotation mechanism of the drum 2 to ensure stable rotation of the drum 2.

[0085] Combined with the structure of the above equipment, the working principle and process of the drum-type glyoxylic acid crystallization granulation equipment are further explained.

[0086] The drum 2 rotates at the required speed through the drive of the driving mechanism 3 and the assistance of the auxiliary rotating mechanism. The cold air enters the cylinder cavity of the drum 2 through the cold air input terminal 61 located on the discharge box 51, absorbs heat, and is discharged from the cold air output terminal 62 of the feed box 41. The discharged gas enters the cold air input terminal 61 again after heat exchange and condensation, realizing the recycling of the cold air.

[0087] The glyoxylic acid seeds enter the mixed crystallization section 21 from the seed inlet 42 and the seed feed pipe 43, the glyoxylic acid solution enters from the solution inlet 44 and the solution feed pipe 45, and is sprayed from the spray hole 452 to the mixed crystallization section 21. Following the rotation of the drum 2, the materials are uniformly mixed, rolled, and turned in the mixed crystallization section 21, and the mixture is crystallized quickly.

[0088] The material enters the material guide area 22 and is quickly introduced into the granulation cooling section 23 under the action of the material guide plate 221 .

[0089] In the granulation cooling section 23, the material is thrown and scattered by the lifting plate 231, and further crystallized and solidified under the cooling of the cold air input from the cold air input end 61, forming glyoxylic acid crystal particles of uniform size and shape.

[0090] The crystal particles enter the end of the drum 2 , are dug into the discharge box 51 through the digging hopper 7 , and are finally discharged from the discharge port 52 .

[0091] The exported crystal particles can be directly classified according to the particle size, and the products that meet the requirements will enter the next packaging process. Some products can be used as glyoxylic acid seeds for crystallization.

[0092] With the granulation equipment of the above structure, the glyoxylic acid solution and the seed crystal can be added automatically and continuously according to the control process, and the cold air can be automatically input as needed, and finally the glyoxylic acid granular finished product is directly produced, which improves the production efficiency. From the whole process of feeding to discharging, the materials are in a closed state, which reduces the turnover of the intermediate process and the material protection, reduces the product loss, and further improves the production efficiency.

[0093] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A drum type glyoxylic acid crystallization granulation equipment, characterized in that: include: frame; The drum comprises a drum wall, wherein a drum cavity is formed in the drum wall; A driving mechanism, used for driving the drum to rotate around its axis; A feeding mechanism, which is arranged at one end of the drum along the axial direction of the drum and is used to feed the crystallization and granulation materials into the drum cavity; A discharging mechanism, which is arranged at the other end of the drum along the axial direction of the drum and is used to discharge the glyoxylic acid particles from the drum cavity; A cooling mechanism, used for delivering cold air into the barrel cavity to cool the glyoxylic acid particles in the barrel cavity; The barrel cavity sequentially forms a mixed crystallization section, a material guiding section and a granulation cooling section from one end close to the feeding mechanism to one end close to the discharging mechanism, and a plurality of lifting plates are arranged on the inner side wall of the barrel wall of the granulation cooling section.

2. The drum type glyoxylic acid crystallization granulation equipment according to claim 1, characterized in that: The cooling mechanism comprises: A cold air conveying device, which is arranged outside the drum; A cold air input end, which is arranged on the discharge mechanism and is used to connect the cold air conveying device and the cylinder cavity; The cold air output end is arranged on the feeding mechanism and is communicated with the cylinder cavity.

3. The drum type glyoxylic acid crystallization granulation equipment according to claim 1 or 2, characterized in that: An anti-sticking layer is arranged on the inner side wall of the cylinder wall of the mixed crystallization zone.

4. The drum type glyoxylic acid crystallization granulation equipment according to claim 1 or 2, characterized in that: A spirally arranged material guide plate is provided on the inner side wall of the cylinder wall of the material guide zone section, and the material guide plate guides the crystallized material of the mixed crystallization zone section into the granulation cooling section.

5. The drum type glyoxylic acid crystallization granulation equipment according to claim 1 or 2, characterized in that: The feeding mechanism comprises: A feed box, which is slidably connected to the drum; a seed crystal inlet formed on the feed box; A seed feeding pipe, which extends from the seed inlet into the barrel cavity and does not contact the barrel wall, one end of which is connected to the seed inlet and the other end of which forms a seed feeding pipe outlet located in the mixed crystallization zone; a solution inlet formed on the feed box; A solution feed pipe extends from the solution inlet into the barrel cavity and does not contact the barrel wall. One end of the solution feed pipe is connected to the solution inlet, and the other end forms a closed end located in the mixed crystallization zone. A plurality of spray holes are formed on the wall of the solution feed pipe located in the barrel cavity.

6. The drum type glyoxylic acid crystallization granulation equipment according to claim 1 or 2, characterized in that: The discharging mechanism comprises: A discharge box, which is slidably connected to the drum; A discharge port is formed on the bottom surface of the discharge box.

7. The drum type glyoxylic acid crystallization granulation equipment according to claim 6, characterized in that: The device also includes: An operation port formed on a side of the discharge box; An operating door, which is arranged on the operating opening and is used to open / close the operating opening; A sight mirror is formed on the operating door.

8. The drum type glyoxylic acid crystallization granulation equipment according to claim 1 or 2, characterized in that: The device also includes: A digging hopper is arranged in the cylinder cavity and close to the discharging mechanism.

9. The drum type glyoxylic acid crystallization granulation equipment according to claim 1 or 2, characterized in that: The driving mechanism comprises: A motor, which is arranged on the frame; A reducer connected to the motor; A gear connected to the reducer; A gear ring is arranged on the outer side of the cylinder wall and meshes with the gear.

10. The drum type glyoxylic acid crystallization granulation equipment according to claim 1 or 2, characterized in that: The device also includes: A supporting wheel assembly, which is arranged on the frame; A rolling ring is arranged on the outer side of the cylinder wall and is matched with the supporting wheel assembly.

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