Negative pressure fan for seeding machine

Abstract

The utility model relates to the technical field of seeding machines, in particular to a negative pressure fan for a seeding machine, which comprises a fan support, a fan impeller, an impeller shell, an impeller shaft, a power input shaft, a belt pulley, a belt and a corrugated pipe. The impeller shaft is installed on the fan impeller and connected with the belt, the power input shaft is installed on the belt wheel and connected with the belt, the belt and the belt wheel are both installed in the fan support, and the corrugated pipe is communicated with the impeller shell. The fan is reasonable and compact in structural design, sufficient in wind power, low in rotating speed, high in negative pressure, stable in operation, low in failure rate and capable of being matched with various transmission shafts, and the impeller diameter of the fan is 50 cm.

Description

TECHNICAL FIELD

[0001] The utility model relates to sowing machine technical field, concretely is a negative pressure fan for sowing machine. BACKGROUND

[0002] With the development of modern science and technology, air suction type seeding machine is more and more applied to crop seeding, and the air suction type seeding machine is a kind of seeding machine that realizes precision seeding by negative pressure suction seed. Compared with mechanical seeding machine, its technical performance has strong advantages: precision seeding can realize single-seed seeding, precision seeding can reduce seed consumption and seed cost, generally can save 8%-10% of seeds; improve seeding precision, and have strong seeding adaptability, can meet the seeding requirements of various types of crop seeds such as long circle, flat, large, medium and small, and almost do not cause damage to seeds.

[0003] The fan assembly is an important component of the air suction type seeding machine, but the existing fan for air suction type seeding machine is mostly complex in structure design, large in overall size of fan and low in working efficiency. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of negative pressure fans for sowing machine, to solve the problems of complex structure, low working efficiency, large size of existing fan.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of negative pressure fan for sowing machine, including fan support, fan impeller, impeller shell, impeller shaft, power input shaft, belt pulley, belt, bellows, the impeller shell is fixed in the upper portion of fan support, the fan impeller is rotatably connected in impeller shell, the impeller shaft is installed on fan impeller, and is connected with belt, the power input shaft is installed on belt pulley, and is connected with belt, the belt, belt pulley are all installed in fan support interior, the bellows is communicated with impeller shell.

[0006] Preferably, the impeller shell includes a shell body and a fixed bottom plate, the fan impeller is rotatably connected with the shell body, one end of the impeller shaft passes through the fan support and the fixed bottom plate in sequence and is inserted into the fan impeller and locked by a fastening nut, the shell body is fixedly connected with the fixed bottom plate, the bellows is fixed outside the shell body, and the fixed bottom plate is fixedly connected with the fan support through a bottom plate fixing plate.

[0007] Preferably, the negative pressure fan further includes an air outlet protective cover and an air outlet baffle, the air outlet of the impeller shell is connected with the air outlet protective cover, and one side of the air outlet protective cover is connected with the air outlet baffle.

[0008] Preferably, the negative pressure fan further includes an upper fan guard and a lower fan guard, the upper fan guard is fixedly connected with the upper portion of the fan support, and the lower fan guard is fixedly connected with the lower portion of the fan support.

[0009] Preferably, it further comprises a bearing seat fixed at the lower part of the fan support and a belt pulley fastening seat fixedly connected with the center of the belt pulley, and the power input shaft is sequentially inserted into the bearing of the bearing seat and the belt pulley fastening seat.

[0010] Preferably, it further comprises a belt tensioning plate located between the fan support and the belt pulley and fixed at the lower part of the fan support through the same set of bolts as the bearing seat, and the bottom of the belt tensioning plate is connected with the bottom of the fan support through bolts.

[0011] Preferably, it further comprises a pressure gauge fixed above the fan support.

[0012] Preferably, it further comprises a left support frame and a right support frame, one end of each of the left support frame and the right support frame is fixed with the fixed bottom plate, and the other end is fixed with the pressure gauge on the fan support through the same set of bolts.

[0013] Preferably, it further comprises a dust cover fixed at the end of the bearing seat.

[0014] Preferably, it further comprises a left fan support and a right fan support, and the left fan support and the right fan support are fixed symmetrically on both sides of the fan support.

[0015] Compared with the prior art, the fan has the advantages that: the fan structure is reasonable and compact, the fan impeller has a diameter of 50 cm, the wind power is sufficient, the rotation speed is low, the negative pressure is high, the operation is stable, the failure rate is low, and the fan can be adapted to various transmission shafts. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is an exploded view of the negative pressure fan for the seeding machine;

[0017] Fig. 2 It is a three-dimensional structure diagram of the negative pressure fan for the seeding machine;

[0018] Fig. 3 It is another three-dimensional structure diagram of the negative pressure fan for the seeding machine;

[0019] Fig. 4 It is a structure diagram of the transmission mechanism of the negative pressure fan for the seeding machine.

[0020] In the figure: fan support 1, fan impeller 2, impeller shaft 3, power input shaft 4, pulley 5, belt 6, corrugated pipe 7, outer shell 8, fixed bottom plate 9, air outlet protective cover 10, air outlet baffle 11, fan upper cover 12, fan lower cover 13, bearing seat 14, pulley fastening seat 15, belt tensioning plate 16, pressure gauge 17, left support 18, right support 19, dust cover 20, fan left support 21, fan right support 22, bottom plate fixing plate 23. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme of the utility model to carry out clearly, complete description, and the advantage is more clear and distinct, the following combining with the figure to the utility model embodiment carries out further detailed explanation. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the protection of the utility model.

[0022] EMBODIMENT

[0023] Please refer to Figs. 1 to 4 A negative pressure fan for seeding machine, including fan support 1, fan impeller 2, impeller shell, impeller shaft 3, power input shaft 4, pulley 5, belt 6, corrugated pipe 7, the impeller shell is fixed at the upper portion of fan support 1, the fan impeller 2 is rotatably connected in the impeller shell, the impeller shaft 3 is installed on the fan impeller 2, and is connected with the belt 6, the power input shaft 4 is installed on the pulley 5, and is connected with the belt 6, the belt 6, the pulley 5 are all installed inside the fan support 1, the corrugated pipe 7 is communicated with the impeller shell.

[0024] As a preferred embodiment of the present embodiment, the impeller shell includes shell 8, fixed bottom plate 9, the fan impeller 2 is rotatably connected with the shell 8, one end of the impeller shaft 3 passes through the fan support 1, the fixed bottom plate 9 in sequence and is inserted into the fan impeller 2 and is locked by the fastening nut, the shell 8 is fixedly connected with the fixed bottom plate 9 by a plurality of bolts, the corrugated pipe 7 is fixed outside the shell 8, and the fixed bottom plate 9 is fixedly connected with the fan support 1 by the bottom plate fixing plate 23. When using the fan of the present embodiment, the corrugated pipe 7 is connected with the air pipe beam on the seeding machine.

[0025] As a preferred embodiment of the present embodiment, it further includes air outlet protective cover 10, air outlet baffle 11, the air outlet of the impeller shell is connected with air outlet protective cover 10, one side of the air outlet protective cover 10 is connected with air outlet baffle 11.

[0026] As a preferred embodiment of the present embodiment, it further comprises an upper fan guard 12 and a lower fan guard 13, the upper fan guard 12 is fixedly connected with the upper part of the fan support 1 by bolts, and the lower fan guard 13 is fixedly connected with the lower part of the fan support 1 by bolts. The upper fan guard 12 and the lower fan guard 13 are both provided with heat dissipation holes.

[0027] As a preferred embodiment of the present embodiment, it further comprises a bearing seat 14 and a belt pulley fastening seat 15, the bearing seat 14 is fixed at the lower part of the fan support 1, and the belt pulley fastening seat 15 is fixedly connected with the center of the belt pulley 5, and the power input shaft 4 is sequentially inserted into the bearing of the bearing seat 14 and the belt pulley fastening seat 15.

[0028] As a preferred embodiment of the present embodiment, it further comprises a belt tensioning plate 16, which is located between the fan support 1 and the belt pulley 5, and is fixedly connected with the bearing seat 14 at the lower part of the fan support 1 by the same set of bolts, and the bottom of the belt tensioning plate 16 is connected with the bottom of the fan support 1 by bolts.

[0029] As a preferred embodiment of the present embodiment, it further comprises a pressure gauge 17, which is fixed above the fan support 1.

[0030] As a preferred embodiment of the present embodiment, it further comprises a left support frame 18 and a right support frame 19, one end of each of the left support frame 18 and the right support frame 19 is fixed with the fixed bottom plate 9, and the other end is fixed with the pressure gauge 17 on the fan support 1 by the same set of bolts.

[0031] As a preferred embodiment of the present embodiment, it further comprises a dust cover plate 20, which is fixed at the end of the bearing seat 14.

[0032] As a preferred embodiment of the present embodiment, it further comprises a left fan support 21 and a right fan support 22, which are symmetrically fixed on both sides of the fan support 1. As shown in the figure, the left fan support 21 and the right fan support 22 are both composed of a connecting plate and a U-shaped bolt, and the U-shaped bolt is used to be sleeved on the suspension beam of the seeding machine.

[0033] The working principle of the fan of the present embodiment is as follows: the U-shaped bolt fixes the fan on the suspension of the seeding machine, the output shaft at the rear of the tractor is connected with the power input shaft of the fan to provide power for the fan, the power input shaft rotates, the power is transmitted to the fan impeller shaft through the belt, the fan impeller is driven to rotate, airflow is generated through high-speed rotation, negative pressure is formed, and the negative pressure is transmitted to the seed metering device through the corrugated pipe (fan → corrugated pipe → air pipe beam → thin plastic corrugated pipe → seed metering device), so that vacuum is formed on one side of the seed metering disc to adsorb seeds.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative pressure fan for a seeding machine, characterized by: Fan bracket, fan impeller, impeller shell, impeller shaft, power input shaft, pulley, belt, corrugated pipe, the impeller shell is fixed on the upper part of the fan bracket, the fan impeller is rotatably connected in the impeller shell, the impeller shaft is installed on the fan impeller and connected with the belt, the power input shaft is installed on the pulley and connected with the belt, the belt and the pulley are installed inside the fan bracket, the corrugated pipe is communicated with the impeller shell.

2. The negative pressure fan for a seeding machine according to claim 1, characterized in that: The impeller shell comprises a shell body and a fixed bottom plate, the fan impeller is rotatably connected with the shell body, one end of the impeller shaft passes through the fan bracket and the fixed bottom plate in sequence and is inserted into the fan impeller and locked by a fastening nut, the shell body is fixedly connected with the fixed bottom plate, the corrugated pipe is fixed outside the shell body, and the fixed bottom plate is fixedly connected with the fan bracket through a bottom plate fixing plate.

3. The negative pressure fan for a seeding machine of claim 2, wherein: It also comprises an air outlet protective cover and an air outlet baffle, the air outlet protective cover is connected to the air outlet of the impeller shell, and the air outlet baffle is connected to one side of the air outlet protective cover.

4. The negative pressure fan for a planter of claim 1, wherein: It also comprises an upper fan guard and a lower fan guard, the upper fan guard is fixedly connected with the upper part of the fan bracket, and the lower fan guard is fixedly connected with the lower part of the fan bracket.

5. The negative pressure fan for a planter of claim 1, wherein: It also comprises a bearing seat and a pulley fastening seat, the bearing seat is fixed to the lower part of the fan bracket, and the pulley fastening seat is fixedly connected with the center of the pulley, and one end of the power input shaft is inserted into the bearing of the bearing seat and the pulley fastening seat in sequence.

6. The negative pressure fan for a planter of claim 5, wherein: It also comprises a belt tensioning plate, the belt tensioning plate is located between the fan bracket and the pulley, and is fixed to the lower part of the fan bracket by the same set of bolts as the bearing seat, and the bottom of the belt tensioning plate is connected to the bottom of the fan bracket by bolts.

7. The negative pressure fan for a planter of claim 2, wherein: It also comprises a pressure gauge, and the pressure gauge is fixed above the fan bracket.

8. The negative pressure fan for a planter of claim 7, wherein: It also comprises a left support frame and a right support frame, one end of the left support frame and the right support frame is fixed to the fixed bottom plate, and the other end is fixed to the fan bracket by the same set of bolts as the pressure gauge.

9. The negative pressure fan for a planter of claim 5, wherein: It also comprises a dust cover, and the dust cover is fixed to the end of the bearing seat.

10. The negative pressure fan for a planter of claim 1, wherein: It also comprises a left fan support and a right fan support, the left fan support and the right fan support are symmetrically fixed to the two sides of the fan bracket.

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