A pressure stabilizing device for an air-suction seeder

Abstract

The invention overcomes and solves the problem by a kind of air suction type seeding machine pressure stabilizing device, the device includes valve body 1, first air pipe 2, second air pipe 3, contraction body 4, air pipe body 5, and its characterized in that valve body 1 is detachably connected with contraction body 4, contraction body 4 is detachably connected on air pipe body 5, one end of first air pipe 2 is arranged on valve body 1, the other end is arranged on air pipe body 5, one end of second air pipe 3 is arranged on contraction body 4, the other end is arranged on air pipe body 5, and the first air pipe 2, second air pipe 3 are all detachably connected.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a pressure stabilizing device for a pneumatic seeder. Background Technology

[0002] In the relevant technical fields, there is a need for constant wind pressure in the seeder as the sowing speed increases. However, as the sowing speed increases, the negative pressure of the seeder will continue to rise or become unstable, which will cause negative effects such as missed sowing, double sowing, seed damage, and uneven plant spacing during sowing operations.

[0003] Therefore, providing a device that can adjust the air pressure of a pneumatic seeder has become an urgent technical problem to be solved. Utility Model Content

[0004] The problem solved by the present invention is to provide a pressure stabilizing device for a pneumatic seeder, which overcomes one or more disadvantages related to the prior art in terms of structure and function, in particular by adjusting the air intake of the seeder fan to achieve pressure adjustment.

[0005] This invention overcomes and solves the problem by using a pressure stabilizing device for a pneumatic seeder. The device includes a valve body 1, a first air pipe 2, a second air pipe 3, a retractable body 4, and an air duct body 5. The valve body 1 and the retractable body 4 are detachably connected, and the retractable body 4 is detachably connected to the air duct body 5. One end of the first air pipe 2 is set on the valve body 1, and the other end is set on the air duct body 5. One end of the second air pipe 3 is set on the retractable body 4, and the other end is set on the air duct body 5. Both the first air pipe 2 and the second air pipe 3 are detachably connected.

[0006] Preferably, the valve body 1 includes an adjusting handle 101, an upper housing 102, an O-ring 103, a compression spring 104, a diaphragm 105, a valve 106, a lower housing 107, a sealing ring 108, a first nut 109, a first bolt 100, a second nut 1011, and a pipe connector 1012. The upper housing has a rotating hollow structure, with a groove near its upper end face and an internal thread below the groove. The O-ring is disposed within the groove of the upper housing. The adjusting handle has an external thread, the thread length of which is less than the length of the adjusting handle. A circular boss is provided at the bottom of the thread on the adjusting handle. The adjusting handle is fitted inside the O-ring, and the external thread on the adjusting handle rotatably engages with the internal thread on the upper housing. One end of the compression spring is fitted onto the circular boss at the bottom of the thread on the adjusting handle, and the other end... The valve is mounted on the diaphragm, which is positioned between the upper and lower housings, forming a sealed cavity with the upper housing. The duct connector is mounted on the upper housing and communicates with the sealed cavity between the upper housing and the diaphragm. The lower housing includes a planar portion and an end portion. The planar portion has a vent hole, and the end portion has threads on its outer side and a conical hole inside. The lower housing is mounted on the valve. The sealing ring is a rotating conical structure and is mounted on the valve. The sealing ring matches the conical hole inside the end portion of the lower housing. The sealing ring is secured to the valve by a second nut. The upper and lower housings are fastened together by a plurality of first bolts and first nuts.

[0007] Preferably, the contractile body includes a fixing frame, a second tracheal connector, and a contractile bladder, wherein the second tracheal connector is detachably fixed to the fixing frame, and the contractile bladder is detachably fixed to the fixing frame.

[0008] Preferably, the duct body includes a duct, a baffle, a connecting rod, a third air pipe connector, and a fourth air pipe connector. One end of the duct is provided with a flange structure. The third air pipe is detachably disposed on the side near the flange. The fourth air pipe connector is detachably disposed on the side away from the flange. The baffle is disposed between the third air pipe connector and the fourth air pipe connector. One end of the connecting rod is fixed to the baffle, and the other end is fixed to the retractable body.

[0009] During operation, the flanged side of the duct body is fastened to the seeder blower. When the seeder blower starts working, negative pressure is generated inside the duct body. As a result, the pressure in the sealed cavity structure formed between the upper shell and the diaphragm decreases, causing the valve and sealing ring to move upward. At the same time, the gap between the sealing ring and the tapered hole inside the lower shell decreases, resulting in less air supply in the vent on the flat part of the lower shell. Consequently, the air pressure changes inside the contractor body, causing the contraction bladder to contract, which in turn moves the connecting rod to reduce the flow rate in the duct, thereby lowering the air pressure.

[0010] When the negative pressure of the fan is adjusted too low, the pressure of the spring acting on the valve is increased by adjusting the adjustment handle. As a result, the valve moves the sealing ring downward, and the gap between the sealing ring and the tapered hole inside the lower housing increases. Consequently, the amount of air supplied to the vent on the flat part of the lower housing increases, and the air pressure inside the contractor body changes, causing the contraction bladder to expand. This, in turn, moves the connecting rod, increasing the flow rate in the air duct and thus increasing the air pressure.

[0011] The present invention achieves the following beneficial technical effects compared to the prior art:

[0012] This invention provides a pressure stabilizing device for a pneumatic seeder, ensuring that the air pressure of the seeder's fan does not change with the tractor's throttle position during operation. Maintaining a constant setting value allows for more precise and accurate sowing when planting different crops. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the pressure stabilizing device of a pneumatic seeder according to the present invention;

[0015] Figure 2 This is a partial cross-sectional view of the valve body of the pressure stabilizing device of a pneumatic seeder according to the present invention;

[0016] Figure 3 This is a schematic diagram of the lower housing structure of the pressure stabilizing device of a pneumatic seeder according to the present invention;

[0017] Figure 4 This is a schematic diagram of the shrink body structure of the pressure stabilizing device of a pneumatic seeder according to the present invention;

[0018] Figure 5 This is a schematic diagram of the duct structure of the pressure stabilizing device of an air suction seeder according to the present invention;

[0019] In the diagram: Valve body 1, Adjusting handle 101, Upper housing 102, O-ring 103, Compression spring 104, Diaphragm 105, Valve 106, Lower housing 107, Flat part 1071, End part 1072, Sealing ring 108, First nut 109, First bolt 100, Second nut 1011, Air pipe connector 1012, First air pipe 2, Second air pipe 3, Constrictor 4, Fixing bracket 401, Second air pipe connector 402, Constriction bladder 403, Air duct body 5, Air duct 501, Baffle 502, Connecting rod 503, Third air pipe connector 504, Fourth air pipe connector 505 Detailed implementation method:

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The purpose of this invention is to provide a pressure stabilizing device for a pneumatic seeder to solve the problems existing in the prior art.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] This invention provides a pressure stabilizing device for an air-suction seeder, comprising a valve body 1, a first air pipe 2, a second air pipe 3, a retractable body 4, and an air duct body 5. The valve body 1 includes an adjusting handle 101, an upper housing 102, an O-ring 103, a compression spring 104, a diaphragm 105, a valve 106, a lower housing 107, a sealing ring 108, a first nut 109, a first bolt 100, a second nut 1011, and an air pipe connector 1012. The upper housing 102 has a rotating hollow structure, with a groove near its upper end face and an internal thread below the groove. The O-ring 103 is disposed within the groove of the upper housing 102. The adjusting handle 101 has an external thread, the thread length of which is less than the length of the adjusting handle 101. The adjusting handle 101 has a circular boss at the bottom of its thread. The adjusting handle 101 is fitted inside the O-ring 103, and the external thread on the adjusting handle 101 rotatably engages with the internal thread on the upper housing 102. One end of the compression spring 104 is fitted onto the circular boss at the bottom of the thread on the adjusting handle 101, and the other end is positioned on the valve 103. The valve 103 is fitted onto the diaphragm 105. The diaphragm 105 is positioned between the upper housing 102 and the lower housing 107, forming a sealed cavity with the upper housing 102. The air pipe connector 1012 is positioned on the upper housing 102 and communicates with the sealed cavity formed between the upper housing 102 and the diaphragm 105.

[0024] The lower housing 107 includes a planar portion 1071 and a tail portion 1072. The planar portion 1071 is provided with a vent hole. The tail portion 1072 is provided with threads on the outside and a tapered hole on the inside. The lower housing 107 is sleeved on the valve 106. The sealing ring 108 is a rotating conical structure. The sealing ring 108 is sleeved on the valve 106, and the sealing ring 108 matches the tapered hole inside the tail portion of the lower housing 107. The sealing ring 108 is restricted to the valve 106 by the second nut 1011. The upper housing 102 and the lower housing 107 are fastened together by the plurality of first bolts 100 and first nuts 109.

[0025] The contractile body 4 includes a fixing frame 401, a second tracheal connector 402, and a contractile bag 403. The second tracheal connector 402 is detachably fixed to the fixing frame 401, and the contractile bag 403 is detachably fixed to the fixing frame 401.

[0026] The duct body 5 includes a duct 501, a baffle 502, a connecting rod 503, a third air pipe connector 504, and a fourth air pipe connector 505. One end of the duct 501 is provided with a flange structure. The third air pipe connector 504 is detachably disposed on the side near the flange, and the fourth air pipe connector 505 is detachably disposed on the side away from the flange. The baffle 502 is disposed between the third air pipe connector 504 and the fourth air pipe connector 505. One end of the connecting rod 503 is fixed to the baffle 502, and the other end is fixed to the retractable body 4.

[0027] One end of the first trachea 2 is detachably fixed to the trachea connector 1012, and the other end is detachably fixed to the fourth trachea connector 505. One end of the second trachea 3 is fixed to the second trachea connector 402, and the other end is fixed to the third trachea connector 504.

[0028] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A pressure stabilizing device for a pneumatic seeder, comprising a valve body, a first air pipe, a second air pipe, a retractor, and an air duct body, characterized in that... The valve body and the retractable body are detachably connected. The retractable body is detachably connected to the duct body. One end of the first air pipe is set on the valve body and the other end is set on the duct body. One end of the second air pipe is set on the retractable body and the other end is set on the duct body. Both the first air pipe and the second air pipe are detachably connected.

2. The pressure stabilizing device for a pneumatic seeder according to claim 1, characterized in that, The valve body includes an adjusting handle, an upper housing, an O-ring, a compression spring, a diaphragm, a valve, a lower housing, a sealing ring, a first nut, a first bolt, a second nut, and a pipe connector. The upper housing is a rotating hollow structure with a groove near its upper end face and an internal thread below the groove. The O-ring is placed in the groove of the upper housing. The adjusting handle has an external thread, the thread length of which is less than the length of the adjusting handle. A circular boss is provided at the bottom of the thread of the adjusting handle. The adjusting handle is fitted inside the O-ring, and the external thread on the adjusting handle rotatably engages with the internal thread on the upper housing. One end of the compression spring is fitted onto the circular boss at the bottom of the thread of the adjusting handle, and the other end is placed on the valve. The valve is fitted onto the diaphragm. The diaphragm is located between the upper and lower housings, forming a sealed cavity structure with the upper housing. The pipe connector is located on the upper housing and communicates with the sealed cavity structure formed between the upper housing and the diaphragm. The lower housing includes a planar portion and an end portion. The planar portion has a vent hole, and the end portion has threads on the outside and a tapered hole inside. The lower housing is fitted onto the valve. The sealing ring has a rotating conical structure and is fitted onto the valve. The sealing ring matches the tapered hole inside the end portion of the lower housing. The sealing ring is secured to the valve by a second nut. The upper housing and the lower housing are fastened together by a plurality of first bolts and first nuts.

3. The pressure stabilizing device for a pneumatic seeder according to claim 1, characterized in that, The contractile body includes a fixing frame, a second tracheal connector, and a contractile bladder. The second tracheal connector is detachably fixed to the fixing frame, and the contractile bladder is detachably fixed to the fixing frame.

4. The pressure stabilizing device for a pneumatic seeder according to claim 1, characterized in that, The duct body includes a duct, a baffle, a connecting rod, a third air pipe connector, and a fourth air pipe connector. One end of the duct is provided with a flange structure. The third air pipe is detachably disposed on the side near the flange. The fourth air pipe connector is detachably disposed on the side away from the flange. The baffle is disposed between the third air pipe connector and the fourth air pipe connector. One end of the connecting rod is fixed to the baffle, and the other end is fixed to the retractable body.

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