Fertilizer granulation equipment capable of pre-drying

Abstract

The utility model provides pre-drying fertilizer granulation equipment which comprises a charging barrel, an extrusion mechanism is arranged in the charging barrel, a forming plate is arranged at the end part of the charging barrel, a plurality of forming holes are formed in the forming plate, a material drying disc is arranged on one side of the forming plate, a plurality of temporary holes corresponding to the forming holes are formed in the material drying disc, and the temporary holes are communicated with the forming holes. The material drying disc is connected with a lifting driving mechanism, a cavity is formed in the material drying disc, and an air inlet and an air outlet which are communicated with the cavity are formed in the outer wall of the material drying disc. According to the utility model, high-temperature gas is injected into the cavity in the material drying disc, so that the temperature of the material drying disc is increased, and the heat of the material drying disc is transferred to the fertilizer particles in the holes through the temporary flow holes, so that the purpose of pre-drying the fertilizer particles is achieved. According to the utility model, the fertilizer particles which firstly enter the temporary retention holes can be slowly pushed out of the temporary retention holes by the later fertilizer particles, so that the temporary retention of the fertilizer particles in the temporary retention holes is realized, and the uniform and effective drying effect is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of fertilizer production equipment, and specifically relates to a pre-drying fertilizer granulation equipment. Background Technology

[0002] Fertilizers play a vital role in agricultural production. In modern fertilizer production, fertilizers are typically made into granules. This is primarily to improve fertilizer flowability, reduce fertilizer scattering and mixing, and allow for slower and more sustained nutrient release, minimizing nutrient loss. Furthermore, granular fertilizers facilitate mechanized handling, storage, and transportation, and are adaptable to various fertilization methods.

[0003] In the existing fertilizer production field, extrusion granulators are a common type of fertilizer granulation equipment. Their principle is to extrude and cut the fertilizer through forming holes, thereby forming granules. To ensure the integrity of the granules, the fertilizer is kept at a certain level of moisture during the granulation stage, and the freshly formed fertilizer granules also have a certain degree of stickiness. This leads to the problem of granules sticking together during the stacking process, affecting the quality of fertilizer granulation. Utility Model Content

[0004] To overcome the shortcomings and problems of existing technologies, improve the quality of fertilizer granulation, and reduce fertilizer particle sticking, this utility model provides a pre-drying fertilizer granulation equipment.

[0005] This utility model is achieved through the following technical solution:

[0006] A pre-dryable fertilizer granulation device includes a material cylinder, an extrusion mechanism inside the material cylinder, a forming plate at the end of the material cylinder with a plurality of forming holes on the forming plate, a drying tray on one side of the forming plate with a plurality of temporary holes corresponding to the forming holes, a lifting drive mechanism connected to the drying tray, a cavity inside the drying tray, and an air inlet and an air outlet communicating with the cavity on the outer wall of the drying tray.

[0007] The forming holes are arranged in multiple rows in parallel.

[0008] The temporary retention hole is a strip hole, and each temporary retention hole is set corresponding to a row of forming holes.

[0009] The lifting drive mechanism includes a second drive motor, which is connected to a cam. The outer wall of the drying tray is provided with an abutment portion, and the end of the abutment portion slides against the surface of the cam.

[0010] The extrusion mechanism includes an auger disposed inside the barrel, and one end of the auger is connected to a first drive motor.

[0011] The air volume at the outlet is less than the air volume at the inlet.

[0012] The material cylinder has a feed inlet at the upper part of the end away from the forming plate.

[0013] It also includes a mounting plate, the material cylinder is fixed on the mounting plate, the outer wall of the drying tray is provided with two support parts opposite to each other, the air inlet and air outlet are respectively provided on the two support parts, and a support rod is provided on one side of each of the two support parts. The end of the support rod passes through the mounting plate, and a spring is provided between the mounting plate and the end of the support rod. The spring is sleeved on the support rod, and a support cylinder for the support rod to pass through is provided on the mounting plate.

[0014] The beneficial effects of this utility model are as follows:

[0015] The drying tray of this invention is provided with a temporary retention hole. The inlet end of the temporary retention hole, when raised and lowered, can cooperate with the forming hole to cut the fertilizer extruded from the forming hole into granules. The drying tray also has a cavity. This invention raises the temperature of the drying tray by injecting high-temperature gas into the cavity, allowing the heat from the tray to be transferred to the fertilizer granules inside the cavity through the temporary retention hole, thereby achieving the purpose of pre-drying the fertilizer granules. In this invention, the fertilizer granules that enter the temporary retention hole first are gradually pushed out of the hole by the fertilizer granules that enter later. This method achieves temporary retention of the fertilizer granules within the retention hole, ensuring uniform and effective drying. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the material cylinder of this utility model;

[0018] Figure 3 This is a schematic diagram of the drying tray structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the drying tray of this utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the drying tray of this utility model.

[0021] In the diagram: 100-material cylinder, 101-feed inlet, 110-extrusion mechanism, 111-auger, 112-first drive motor, 120-forming plate, 121-forming hole, 130-drying tray, 131-temporary hole, 132-cavity, 133-air inlet, 134-air outlet, 135-support part, 136-support rod, 137-abutting part, 140-lifting drive mechanism, 141-second drive motor, 142-cam, 150-mounting plate, 151-support cylinder, 152-spring. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 , 2 As shown, a pre-dryable fertilizer granulation device includes a material cylinder 100 and a mounting plate 150. The material cylinder 100 is fixed to the mounting plate 150. A feed inlet 101 is provided at the upper part of the end of the material cylinder 100 away from the forming plate 120. An extrusion mechanism 110 is provided inside the material cylinder 100. The extrusion mechanism 110 includes an auger 111 disposed inside the material cylinder 100. One end of the auger 111 is connected to a first drive motor 112. After the material enters the material cylinder 100 through the feed inlet 101, the first drive motor 112 drives the auger 111 to rotate, thereby moving the material inside the material cylinder 100 and mixing it during the movement. The end of the material cylinder 100 is provided with a forming plate 120, and the forming plate 120 is provided with a plurality of forming holes 121. The forming holes 121 are arranged in multiple rows in parallel. When the extrusion mechanism 110 extrudes the material to the end of the material cylinder 100, the material will be squeezed out from the forming holes 121. At this time, the extruded material is in the shape of a thin strip, which is convenient for subsequent granulation work.

[0024] like Figure 2 , 3As shown, a drying tray 130 is provided on one side of the forming plate 120. The drying tray 130 has several temporary holes 131 corresponding to the forming holes 121. The temporary holes 131 are strip holes, and each temporary hole 131 is arranged corresponding to a row of forming holes 121. The slender strip-shaped fertilizer extruded from the forming holes 121 will enter the temporary holes 131. The drying tray 130 is connected to a lifting drive mechanism 140. The lifting drive mechanism 140 includes a second drive motor 141. The second drive motor 141 is connected to a cam 142. The outer wall of the drying tray 130 is provided with an abutment part 137. The end of the abutment part 137 slides against the surface of the cam 142. When the second drive motor 141 drives the cam 142 to rotate, the drying tray 130 is lifted by the cam 142, resulting in a lifting motion. During this motion, relative movement occurs between the temporary retention hole 131 and the forming hole 121. A shearing force is generated between the inlet edge of the temporary retention hole 131 and the outlet edge of the forming hole 121, cutting the slender strips of fertilizer into fertilizer granules. The granulation length can be adjusted by changing the extrusion speed of the extrusion mechanism 110 and the lifting frequency of the drying tray 130 to meet different production needs.

[0025] like Figure 4 , 5 As shown, the drying tray 130 has a cavity 132. The outer wall of the drying tray 130 has an air inlet 133 and an air outlet 134 that communicate with the cavity 132. High-temperature gas is added into the cavity 132 through the air inlet 133, and the heat of the high-temperature gas is conducted to the drying tray 130, causing the temperature of the drying tray 130 to rise and pre-dry the fertilizer granules in the temporary retention hole 131. By adjusting the air intake and air temperature, the temperature of the drying tray 130 can be controlled, thereby controlling the drying effect. The air outlet 134 works in conjunction with the air inlet 133 to refresh and circulate the gas in the cavity 132. The air output of the air outlet 134 is less than the air intake of the air inlet 133, which can prevent the temperature from dropping due to excessive air flow, maintain the temperature stability of the drying tray 130, and at the same time, create a certain positive pressure in the cavity 132, so that the high-temperature gas fills the cavity 132, ensuring the uniformity of drying. In this embodiment, the drying tray 130 has a certain width. The fertilizer particles that enter the temporary hole 131 first will not immediately fall out of the outlet end of the temporary hole 131, but will be slowly pushed out of the temporary hole 131 by the fertilizer particles that enter later. This allows each fertilizer particle to stay in the drying tray 130 for a period of time, ensuring that the fertilizer particles are effectively dried and improving the uniformity of drying.

[0026] like Figure 1 , 3As shown in Figure 4, the outer wall of the drying tray 130 is provided with two opposing support parts 135. The air inlet 133 and the air outlet 134 are respectively provided on the two support parts 135. Each of the two support parts 135 is provided with a support rod 136 on one side. The end of the support rod 136 passes through the mounting plate 150. A spring 152 is provided between the mounting plate 150 and the end of the support rod 136. The spring 152 is sleeved on the support rod 136. The spring 152 is used to provide the force for the drying tray 130 to return to its original position, ensuring that the drying tray 130 can quickly and accurately return to its original position after rising. The mounting plate 150 is provided with a support cylinder 151 for the support rod 136 to pass through. The support rod 136 and the support cylinder 151 cooperate to fix the drying tray 130. At the same time, the support cylinder 151 ensures that the drying tray 130 can only descend to a fixed height, preventing the drying tray 130 from descending too far and causing the temporary hole 131 to fail to align with the forming hole 121.

[0027] The above embodiments are preferred implementations of this utility model and are not intended to limit this utility model. Any obvious substitutions are within the protection scope of this utility model without departing from its inventive concept.

Claims

1. A pre-dryable fertilizer granulation device, comprising a material cylinder (100), characterized in that: The material cylinder (100) is provided with an extrusion mechanism (110). The end of the material cylinder (100) is provided with a forming plate (120). The forming plate (120) is provided with a plurality of forming holes (121). A drying tray (130) is provided on one side of the forming plate (120). The drying tray (130) is provided with a plurality of temporary holes (131) corresponding to the forming holes (121). The drying tray (130) is connected to a lifting drive mechanism (140). A cavity (132) is provided inside the drying tray (130). The outer wall of the drying tray (130) is provided with an air inlet (133) and an air outlet (134) communicating with the cavity (132).

2. The pre-dryable fertilizer granulation equipment according to claim 1, characterized in that: The forming holes (121) are arranged in multiple rows in parallel.

3. The pre-dryable fertilizer granulation equipment according to claim 2, characterized in that: The temporary hole (131) is a strip hole, and each temporary hole (131) is provided in correspondence with a row of forming holes (121).

4. The pre-dryable fertilizer granulation equipment according to claim 3, characterized in that: The lifting drive mechanism (140) includes a second drive motor (141), the second drive motor (141) is connected to a cam (142), and the outer wall of the drying tray (130) is provided with an abutment part (137), the end of the abutment part (137) slides against the surface of the cam (142).

5. The pre-dryable fertilizer granulation equipment according to claim 4, characterized in that: The extrusion mechanism (110) includes an auger (111) disposed in the barrel (100), and one end of the auger (111) is connected to a first drive motor (112).

6. The pre-dryable fertilizer granulation equipment according to claim 5, characterized in that: The air output of the outlet (134) is less than the air intake of the inlet (133).

7. The pre-dryable fertilizer granulation equipment according to claim 1, characterized in that: The material cylinder (100) has a feed inlet (101) at the upper part of one end away from the forming plate (120).

8. A pre-dryable fertilizer granulation device according to any one of claims 1-7, characterized in that: It also includes a mounting plate (150), the material cylinder (100) is fixed on the mounting plate (150), the outer wall of the drying tray (130) is provided with two support parts (135) opposite to each other, the air inlet (133) and the air outlet (134) are respectively provided on the two support parts (135), and a support rod (136) is provided on one side of each of the two support parts (135). The end of the support rod (136) passes through the mounting plate (150), and a spring (152) is provided between the mounting plate (150) and the end of the support rod (136). The spring (152) is sleeved on the support rod (136), and a support cylinder (151) is provided on the mounting plate (150) for the support rod (136) to pass through.

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