Agricultural deep applicator with a shank

Abstract

The utility model belongs to the agricultural loosening and fertilizing mechanical technical field relates to a kind of drill rod for agricultural deep application machine, including stem, connecting rod installed on the upper end of stem, drill head installed on the lower end of stem, stem inside is equipped with hollow cavity that passes through up and down, the columnar body of stem lower end and the thread connection of drill head upper end and the thread depth of connection can be adjusted, the outer wall of columnar body is evenly distributed with several longitudinal recess, first row of spray hole and second row of spray hole with different aperture are all arranged in longitudinal direction in recess, two top pin screw holes are symmetrically set on the side wall of columnar body, and top pin screw hole is equipped with the top pin of cooperation. The thread depth of stem and drill head connection is adjusted, the adjustment of the number of spray hole and spray hole section is realized, and then the independent adjustment of spray flow and outlet pressure is realized, to improve spray operation efficiency. The axial rotation of stem and drill head is limited by top pin, to prevent axial rotation between drill head and stem during spray operation.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural soil loosening and fertilization machinery technology, specifically relating to a chisel for an agricultural deep application machine. Background Technology

[0002] With the increasing automation and intelligence of agriculture, intelligent equipment is being applied more and more in agricultural production. Deep fertilizer applicators are favored because they can apply gaseous or liquid fertilizers directly to the soil surface, avoiding volatilization and loss, and improving the utilization rate of gaseous or liquid fertilizers.

[0003] Existing deep spraying machines have a row of discharge holes on the deep spraying head, and the deep spraying rod is connected to the deep spraying head with an interference fit. For example, the utility model patent with authorization announcement number CN218302217U discloses an integrated deep spraying rod for a deep spraying machine. This type of deep spraying rod has poor operational stability, and the discharge hole is single and fixed. The flow rate cannot be adjusted during spraying operations, resulting in poor applicability to spraying areas under different conditions. Summary of the Invention

[0004] The purpose of this invention is to provide a drill rod for agricultural deep application machines that features adjustable spraying flow and pressure, strong operational stability, and high spraying efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a drill rod for an agricultural deep-application machine, including a rod body, a connecting rod installed at the upper end of the rod body, and a drill bit installed at the lower end of the rod body. The rod body has a hollow cavity that runs vertically through it, which is used to transport gaseous fertilizer or liquid fertilizer. The upper part of the rod body has a feed port that communicates with the hollow cavity. The lower end of the rod body has an external thread. The drill bit includes a cylindrical body and a conical head connected to the lower end of the cylindrical body. The inner wall of the cylindrical body has an internal thread that is adapted to the external thread at the lower end of the rod body. The upper end of the cylindrical body is threadedly connected to the lower end of the rod body, and the thread depth of the connection can be adjusted. Several longitudinally arranged grooves are evenly distributed on the outer wall of the cylindrical body. Each groove has a first row of spray holes and a second row of spray holes arranged longitudinally. The first row of spray holes and the second row of spray holes are both connected to the interior of the cylindrical body. Two set screw threaded holes are symmetrically opened on the side wall of the cylindrical body. The set screw threaded holes are provided with matching set screws, which are used to limit the axial rotation of the rod body and the drill bit.

[0006] Furthermore, the upper end of the rod is provided with a connector, the lower end of the connecting rod is positioned and inserted into the upper end of the connector, and the upper part of the connector is welded to the lower end of the connecting rod. The welding method is full welding to make the product more robust and improve the durability and safety of power output. The feed port is set on one side of the connector.

[0007] Furthermore, both the first and second spray holes are inverted conical in shape, and the diameters of the first and second spray holes are different.

[0008] Furthermore, the number of grooves is six, with the width in the middle of each groove being greater than the width at both ends of the groove, and the depth in the middle of each groove being greater than the depth at both ends of the groove. During operation, the soil can be rotated and discharged more quickly along the grooves, reducing resistance and improving the kinetic energy conversion rate.

[0009] Furthermore, the inner end of the set screw is in contact with the external thread at the lower end of the rod body, and the outer end of the set screw is not higher than the outer wall surface of the columnar body.

[0010] Furthermore, all the first row of spray holes within the groove are located on the same horizontal plane, and all the second row of spray holes are located on the same horizontal plane.

[0011] Furthermore, both the internal and external threads are 55° sealing pipe threads, which not only provide a firm connection but also a sealing function. The ends of the threads are tapered to increase axial friction and further prevent the drill bit from coming loose during operation.

[0012] Furthermore, the columnar body and the cone head are integrally formed, and the cone head has a cone angle of 30°, making it easier for the cone head to penetrate deep soil layers.

[0013] This utility model has the following beneficial effects:

[0014] 1. The drill rod of this utility model has multiple sets of conical grooves at the drill bit. During operation, the soil can be rotated and discharged more quickly along the grooves, reducing resistance and improving the kinetic energy conversion rate.

[0015] 2. The drill rod of this utility model has two sets of inverted conical spray holes with different diameters in the conical groove. By adjusting the thread depth of the connection between the rod body and the drill bit, the number and cross-section of the spray holes can be adjusted, thereby realizing the autonomous adjustment of the spray flow rate and outlet pressure to adapt to different spraying areas. It can spray more areas in the shortest time, thereby improving the efficiency of spraying operations.

[0016] 3. The drill rod of this utility model uses a set screw to limit the axial rotation of the rod body and drill bit, preventing axial rotation between the drill bit and the rod body during spraying operations and improving the stability of spraying operations.

[0017] 4. The joint at the upper end of the drill rod body of this utility model is fully welded to the lower end of the connecting rod, which improves the connection strength, enhances the durability and safety of power output, and reduces processing costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the drill rod of this utility model.

[0019] Figure 2 This is the front view of the drill rod of this utility model.

[0020] Figure 3 yes Figure 2Sectional view along the AA direction.

[0021] Figure 4 yes Figure 3 Enlarged view of the local structure at point B in the middle.

[0022] Figure 5 This is a schematic diagram of the disassembly structure of the drill rod of this utility model.

[0023] Figure 6 yes Figure 5 Enlarged view of the local structure at point C.

[0024] In the diagram, 1 is the connecting rod, 2 is the rod body, and 3 is the drill bit.

[0025] 21. Hollow cavity; 22. External thread; 23. Connector; 24. Feed inlet;

[0026] 31. Groove; 32. First row of spray holes; 33. Second row of spray holes; 34. Set screw threaded hole; 35. Set screw; 36. Internal thread; 37. Columnar body; 38. Conical head. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] like Figure 1-6 As shown, a drill rod for an agricultural deep-fertilizing machine includes a rod body 2, a connecting rod 1 installed at the upper end of the rod body 2, and a drill bit 3 installed at the lower end of the rod body 2. The rod body 2 has a hollow cavity 21 running vertically through it, used for conveying gaseous or liquid fertilizer. The upper part of the rod body 2 has a feed inlet 24 communicating with the hollow cavity 21. A connector 23 is located at the upper end of the rod body 2. The lower end of the connecting rod 1 is inserted into the upper end of the connector 23. The upper part of the connector 23 is welded to the lower end of the connecting rod 1 using a full weld to make the product more robust, improve the durability and safety of power output, and reduce processing costs. The feed inlet 24 is located on one side of the connector 23. The connecting rod 1 is used to connect to a liquid supply device and a power device. The liquid supply device provides gaseous or liquid fertilizer to the rod body 2 through the feed inlet 24. The power device drives the drill rod downwards, causing the drill bit 3 to insert into the ground.

[0029] The lower end of the rod body 2 is provided with an external thread 22. The drill bit 3 is used to drill into the ground and spray gaseous or liquid fertilizer, and the flow rate of gaseous or liquid fertilizer can be adjusted. The drill bit 3 includes a cylindrical body 37 and a conical head 38 connected to the lower end of the cylindrical body 37. The inner wall of the cylindrical body 37 is provided with an internal thread 36 that is adapted to the external thread 22 at the lower end of the rod body 2. The upper end of the cylindrical body 37 is threadedly connected to the lower end of the rod body 2, and the thread depth of the connection can be adjusted. Several longitudinally arranged grooves 31 are evenly distributed on the outer wall of the cylindrical body 37. Each groove 31 is provided with a longitudinally arranged internal thread. The first row of spray holes 32 and the second row of spray holes 33 are both connected to the interior of the columnar body 37. Two set screw threaded holes 34 are symmetrically opened on the upper part of the side wall of the columnar body 37. Set screws 35 are provided in the set screw threaded holes 34. The inner end of the set screw 35 is in contact with the external thread 22 at the lower end of the rod body 2. The outer end of the set screw 35 is not higher than the outer wall surface of the columnar body 37. The set screw 35 is used to limit the axial rotation of the rod body 2 and the drill bit 3, prevent the drill bit 3 from rotating axially during operation, and improve the overall structural strength.

[0030] In one embodiment of this utility model, there are six grooves 31. The grooves are conical grooves, that is, the width in the middle of each groove 31 is greater than the width at both ends of the groove 31, and the depth in the middle of each groove 31 is greater than the depth at both ends of the groove 31. During operation, the soil can be rotated and discharged more quickly along the grooves 31, reducing resistance and improving the kinetic energy conversion rate.

[0031] In one embodiment of this utility model, both the first row of spray holes 32 and the second row of spray holes 33 are inverted conical, and the diameters of the first row of spray holes 32 and the second row of spray holes 33 are different. On the one hand, this improves the uniformity of spraying operations, and on the other hand, the spray holes can be selected according to the operation requirements to improve spraying efficiency.

[0032] To improve the uniformity of spraying operations and the operability of nozzle selection, all first-row nozzles 32 within the groove 31 are located on the same horizontal plane, and all second-row nozzles 33 are located on the same horizontal plane. By tightening or loosening the thread depth connecting the cylindrical body 37 to the lower end of the rod 2, the lower end of the rod 2 can be adjusted to completely or partially cover a row of first-row nozzles 32 on the same horizontal plane. After adjusting to the appropriate position, the set screw 35 is tightened from the set screw threaded hole 34 to limit the axial rotation of the rod 2 and the drill bit 3, thereby autonomously controlling the number of nozzles in the upper and lower layers and the effective nozzle cross-section, thus realizing the flow rate adjustment of the drill bit 3, spraying more areas in the shortest time, thereby improving work efficiency.

[0033] Both the internal thread 36 and the external thread 22 use 55° sealing pipe threads, which provide a secure connection while also sealing the pipe. This prevents sand, soil, dust, water, and splashing particles from contaminating the fertilizer and also avoids leakage and waste, making it both economical and environmentally friendly. The tapered ends of the threads increase axial friction and further prevent the drill bit from loosening during operation.

[0034] The columnar body 37 and the cone head 38 are integrally formed. The cone head 38 has a cone angle of 30°, making it easier for the cone head to penetrate deep soil layers.

[0035] When using the drill rod of this utility model, the cylindrical body 37 of the drill bit 3 is tightened to a suitable thread depth at the lower end of the rod body 2 according to the area of ​​the spraying area and the looseness of the soil. This controls the number of spray holes 32 and 33 connected to the hollow cavity 21 and the effective spray hole cross-section, thereby achieving autonomous adjustment of the spraying flow rate and outlet pressure. After adjusting to the appropriate position, the set screw 35 is screwed into the set screw threaded hole 34, so that the inner end of the set screw 35 contacts and abuts against the external thread 22 at the lower end of the rod body 2. This limits the axial rotation of the rod body 2 and the drill bit 3, preventing axial rotation between the drill bit 3 and the rod body 2 during spraying operations and improving the stability of the spraying operation. The power equipment drives the drill rod downward, so that the drill bit 3 is inserted into the ground to a suitable spraying depth. The liquid supply equipment provides gaseous fertilizer or liquid fertilizer to the rod body 2 through the feed port 24. The gaseous fertilizer or liquid fertilizer is evenly sprayed into the area to be sprayed through the hollow cavity 21 of the rod body 2 through the corresponding first row of spray holes 32 and second row of spray holes 33.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.

[0037] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A drill rod for an agricultural deep-plowing machine, comprising a rod body, a connecting rod installed at the upper end of the rod body, a drill bit installed at the lower end of the rod body, a hollow cavity extending vertically through the rod body, and a feed inlet communicating with the hollow cavity at the upper part of the rod body, characterized in that, The lower end of the rod body is provided with an external thread. The drill bit includes a cylindrical body and a conical head connected to the lower end of the cylindrical body. The inner wall of the cylindrical body is provided with an internal thread that is compatible with the external thread at the lower end of the rod body. The upper end of the cylindrical body is threadedly connected to the lower end of the rod body, and the thread depth of the connection can be adjusted. Several longitudinally arranged grooves are evenly distributed on the outer wall of the cylindrical body. Each groove is provided with a first row of spray holes and a second row of spray holes along the longitudinal direction. The first row of spray holes and the second row of spray holes are connected to the interior of the cylindrical body. Two set screw threaded holes are symmetrically opened on the side wall of the cylindrical body. The set screw threaded holes are provided with matching set screws. The set screws are used to limit the axial rotation of the rod body and the drill bit.

2. The drill rod for agricultural deep-plowing machines as described in claim 1, characterized in that, The upper end of the rod is provided with a joint, the upper part of which is welded to the lower end of the connecting rod, and the feed port is located on one side of the joint.

3. The drill rod for agricultural deep-plowing machines as described in claim 1, characterized in that, Both the first and second row of spray holes are inverted conical in shape, and the diameters of the first and second row of spray holes are different.

4. The drill rod for agricultural deep-plowing machines as described in claim 3, characterized in that, The number of grooves is six, and the width in the middle of each groove is greater than the width at both ends of the groove, and the depth in the middle of each groove is greater than the depth at both ends of the groove.

5. The drill rod for agricultural deep-plowing machines as described in claim 1, characterized in that, The inner end of the set screw is in contact with the external thread at the lower end of the rod body, and the outer end of the set screw is not higher than the outer wall surface of the columnar body.

6. The drill rod for agricultural deep-application machines as described in any one of claims 1-5, characterized in that, All the first row of spray holes in the groove are located on the same horizontal plane, and all the second row of spray holes are located on the same horizontal plane.

7. The drill rod for agricultural deep-plowing machines as described in claim 1, characterized in that, Both the internal and external threads are 55° sealing pipe threads.

8. The drill rod for agricultural deep-plowing machines as described in claim 1, characterized in that, The columnar body and the cone head are integrally formed, and the cone head has a cone angle of 30°.

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