Anti-blocking stockline doser

Abstract

The utility model relates to the technical field of dosers, and discloses an anti-blocking stockline doser which comprises a box body internally provided with a cavity, a discharging pipe communicated with the cavity is arranged on the lower end face of the box body, a cover body is arranged on the upper end face of the box body, a cavity is formed in the cover body, a rotating rod is arranged in the cavity, and the lower end of the rotating rod extends into the cavity and can rotate. A plurality of mixing rods are arranged on the side wall of the rotating rod, and a driving assembly is further arranged in the cavity; a dredging assembly is further arranged on the rotating rod; opposite and movable mounting plates are arranged on the side wall of the discharging pipe, a plurality of inserting rods are arranged on the mounting plates, one ends of the inserting rods are inserted into the discharging pipe, and moving assemblies are arranged on the mounting plates. By means of the structure, when the driving assembly drives the rotating rod to rotate, the rotating rod rotates to drive the dredging assembly, the discharging pipe is continuously dredged through the dredging assembly, and the situation that feed blocks the discharging pipe can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dosing device technical field, concretely relates to a kind of dosing devices of anti-blocking material line. BACKGROUND

[0002] In the breeding industry, to ensure the health of livestock, medicine will be added to feed to ensure that it is not easy to get sick. Currently, a dosing device is usually used to mix feed and medicine, and then the mixed feed is added to the material line through the dosing device. The mixed feed is then transported to the feeding trough of the livestock by the material line.

[0003] For example, the patent with publication number CN220131382U discloses a dosing device for breeding material line. Although this dosing device for breeding material line solves the problem of angle adjustment between the dosing device and the transportation pipeline of the breeding material line, the diameter of the discharge pipe is smaller than the diameter of the hopper. When the medicine in the hopper is discharged through the discharge pipe, the medicine may be stuck in the discharge pipe, which affects the discharge effect of the discharge pipe. Therefore, there is room for improvement. SUMMARY

[0004] The purpose of the present utility model is to provide a dosing device for preventing the material line from being blocked, to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions:

[0006] A dosing device for preventing the material line from being blocked includes a box body with a cavity. A discharge pipe is arranged on the lower end surface of the box body and communicates with the cavity. A cover is arranged on the upper end surface of the box body. A cavity is arranged in the cover. A rotating rod is arranged in the cavity and extends into the cavity. A plurality of mixing rods are arranged on the side wall of the rotating rod. A driving assembly is arranged in the cavity and is used to drive the rotating rod to rotate.

[0007] A dredging assembly is further arranged on the rotating rod. The rotating rod is used to drive the dredging assembly to dredge the discharge pipe.

[0008] Opposite and movable mounting plates are arranged at the side wall of the discharge pipe. A plurality of insertion rods are arranged on the mounting plates and extend into the discharge pipe. A moving assembly is arranged on each mounting plate. The dredging assembly is used to drive the two moving assemblies to drive the corresponding mounting plates to move reciprocally.

[0009] Preferably, a first sprocket is arranged on the rotating rod in the cavity.

[0010] The driving assembly includes a fixed plate arranged in the cavity. A motor is arranged on the fixed plate. A second sprocket is arranged on the output shaft of the motor. A chain is arranged between the first sprocket and the second sprocket. The motor drives the rotating rod to rotate.

[0011] Preferably, the rotating rod is provided with a rotating groove with open ends, a rotating disc is sleeved on the upper end surface of the rotating rod, a plurality of rotating blocks are arranged on the upper end surface of the rotating disc and close to the edge, a first inclined surface is formed on each rotating block, and a slot is formed on the opposite side walls of the cavity and penetrates the cover body;

[0012] The dredging assembly comprises a dredging rod arranged in the rotating groove and extending out of the rotating groove at both ends, a lifting disc is arranged on the upper end surface of the dredging rod, a limiting plate is arranged on the side wall of the lifting disc and opposite to each other and penetrates the corresponding slot at one end, a plurality of lifting rods are arranged on the lower end surface of the lifting disc and close to the edge, a second inclined surface is formed on the lower end surface of each lifting rod and matched with the first inclined surface, the rotating rod drives the dredging rod to lift and descend, and the dredging rod dredges the discharge pipe.

[0013] Preferably, a cylinder is arranged on the upper end surface of the cover body, a penetrating rod is arranged on the upper end surface of the lifting disc and penetrates the cover body at one end and extends into the cylinder, a penetrating ring is sleeved on the penetrating rod in the cylinder, and a first spring is further arranged in the cylinder and used for pushing the penetrating ring close to the cover body.

[0014] Preferably, opposite positioning plates are arranged on the lower end surface of the box body.

[0015] The moving assembly comprises a plurality of mounting rods arranged on the mounting plate, one end of each mounting rod penetrates the corresponding positioning plate, a mounting ring is sleeved on the penetrating end of each mounting rod, a second spring is sleeved on the mounting rod between the mounting plate and the positioning plate and used for pushing the mounting plate to move towards the discharge pipe, and a moving piece is arranged on the penetrating end of each limiting plate and used for driving the two mounting plates to move away from the discharge pipe.

[0016] Preferably, a moving plate is arranged on each side of the two mounting plates, a moving block is arranged on one end of each moving plate, and a third inclined surface is formed on each moving block.

[0017] The moving piece comprises a driving rod arranged on the limiting plate, a driving block is arranged on the lower end surface of the driving rod, a fourth inclined surface is formed on the opposite side walls of the driving block and matched with the third inclined surface, the driving block extrudes the two moving blocks, and the two mounting plates move away from the discharge pipe.

[0018] Preferably, a dredging sharp cone is arranged on the lower end surface of the dredging rod.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] 1、When the driving assembly drives the rotating rod to rotate, the rotating rod also drives the dredging assembly, and the discharge pipe is continuously dredged through the dredging assembly, so that the feeding line dosing device can reduce the blockage of feed in the discharge pipe in actual use.

[0021] The utility model discloses when the dredging assembly is operated, the dredging assembly still drives two mobile assemblies, and two mobile assemblies drive corresponding mounting plate to carry out the sustained reciprocating movement, and the plug rod on the mounting plate is inserted into the feed in the discharge pipe continuously, thereby further reducing the possibility of the feed being blocked in the discharge pipe, and improving the discharge effect of the discharge pipe. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure diagram of a kind of anti-blocking line dosing device in the utility model.

[0023] Figure 2 It is the sectional structure diagram of box in the utility model.

[0024] Figure 3 It is the structure diagram of mounting plate at discharge pipe in the utility model.

[0025] Figure 4 It is the structure diagram of mounting plate and moving plate in the utility model.

[0026] Figure 5 It is the structure diagram of cover in the utility model.

[0027] Figure 6 It is Figure 2 The enlarged structure diagram of A in the utility model.

[0028] Figure 7 It is the explosion structure diagram of cover plate in the utility model.

[0029] The meaning of each reference numeral in the figure is as follows:

[0030] 100, box;110, cover;111, barrel;112, feeding opening;120, driving rod;121, support;130, supporting leg;

[0031] 200, discharge pipe;201, cavity;202, cavity;210, mounting plate;211, plug rod;220, rotating rod;221, mixing rod;222, rotating disc;230, first chain wheel;240, fixed plate;241, motor;242, second chain wheel;243, chain;250, dredging rod;251, lifting disc;252, lifting rod;260, dredging sharp cone;

[0032] 300, positioning plate;310, mounting rod;311, mounting ring;312, second spring;320, moving plate;321, moving block;330, driving block;

[0033] 501, notch;510, limiting plate;

[0034] 600. Penetrating rod; 601. Penetrating ring; 610. First spring;

[0035] 701. Rotating block. Detailed Implementation

[0036] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0037] The following is in conjunction with the appendix Figures 1-7 This embodiment will be described in further detail.

[0038] like Figure 1 As shown, an anti-clogging feed line dosing device in this embodiment includes a box 100 with an internal cavity 202. A discharge pipe 200 communicating with the cavity 202 is provided on the lower end surface of the box 100. A cover 110 is provided on the upper end surface of the box 100. A cavity 201 is provided inside the cover 110. A rotating rod 220 with its lower end extending into the cavity 202 and rotatable is provided inside the cavity 201. A plurality of mixing rods 221 are provided on the side wall of the rotating rod 220. A driving assembly is also provided inside the cavity 201. The driving assembly is used to drive the rotating rod 220 to rotate.

[0039] The rotating rod 220 is also equipped with a clearing component. The rotation of the rotating rod 220 is used to drive the clearing component to clear the discharge pipe 200.

[0040] The side wall of the discharge pipe 200 is provided with a relatively movable mounting plate 210. Each mounting plate 210 is provided with a plurality of insert rods 211, one end of which is inserted into the discharge pipe 200. Each mounting plate 210 is provided with a moving component. The unblocking component is used to drive the two moving components to drive the corresponding mounting plate 210 to reciprocate.

[0041] In this embodiment, a hopper is connected to the feed line, and the discharge pipe 200 is located above the hopper. When in use, feed and medicine are added into the cavity 202, and the rotating rod 220 is driven to rotate by the drive assembly. When the rotating rod 220 rotates, it will drive the mixing rod 221 to rotate around the circumference of the rotating rod 220, so that the mixing rod 221 can mix the feed and medicine in the cavity 202. Finally, the mixed feed is discharged through the discharge pipe 200.

[0042] Wherein, in order to avoid the mixed feed may be stuck in the discharge pipe 200 when the mixed feed is discharged through the discharge pipe 200, when the driving assembly drives the rotating rod 220 to rotate, the rotating rod 220 rotates and drives the dredging assembly to continuously dredge the discharge pipe 200, compared with the prior art, the anti-blocking line dosing device can reduce the blockage of the feed in the discharge pipe 200 during actual use;

[0043] Wherein, when the dredging assembly is working, the dredging assembly also drives two moving assemblies, the two moving assemblies drive the corresponding mounting plate 210 to continuously reciprocate, so that the insertion rod 211 on the mounting plate 210 continuously inserts the feed in the discharge pipe 200, thereby further reducing the possibility of feed blockage in the discharge pipe 200 and improving the discharge effect of the discharge pipe 200;

[0044] Wherein, the upper end of the rotating rod 220 is rotatably installed on the side wall of the cavity 201 through a bearing, the mixing rod 221 is fixedly installed on the rotating rod 220, so that the rotating rod 220 can drive the mixing rod 221 to rotate, and the insertion rod 211 is fixedly installed on the mounting plate 210, so that when the mounting plate 210 reciprocates, the mounting plate 210 can drive the insertion rod 211 to continuously insert the feed in the discharge pipe 200 to reduce the blockage of the feed in the discharge pipe 200;

[0045] Wherein, the discharge pipe 200 is fixedly installed on the lower end face of the box body 100, and a plug cylinder (not shown in the figure) is threadedly sleeved on the lower end of the discharge pipe 200, when the plug cylinder is detached from the discharge pipe 200, the mixed feed can be discharged through the discharge pipe 200, and when the plug cylinder is installed on the discharge pipe 200, the discharge pipe 200 cannot discharge;

[0046] In actual use, the cover body 110 is fixedly installed on the box body 100, the cover body 110 is further provided with a feeding opening 112, and the staff can add feed or medicine into the cavity 202 through the feeding opening 112, a plurality of supporting legs 130 are installed on the lower end face of the box body 100 and used for supporting the box body 100, so that the discharge pipe 200 can be located above the hopper.

[0047] As shown in Figures 1-2 In this embodiment, the rotating rod 220 in the cavity 201 is provided with a first sprocket 230;

[0048] The driving assembly comprises a fixed plate 240 arranged in the cavity 201, the fixed plate 240 is provided with a motor 241, a second sprocket 242 is sleeved on the output shaft of the motor 241, and a chain 243 is sleeved between the first sprocket 230 and the second sprocket 242, so as to realize the rotation of the rotating rod 220 driven by the motor 241.

[0049] In the embodiment, the first sprocket 230, the fixed plate 240, the motor 241, the second sprocket 242 and the chain 243 are arranged, so that the first sprocket 230 is fixedly installed on the rotating rod 220, the fixed plate 240 is fixedly installed in the cavity 201, the motor 241 is fixedly installed on the fixed plate 240, the second sprocket 242 is fixedly installed on the output shaft of the motor 241, when the motor 241 drives the second sprocket 242 to rotate, the second sprocket 242 can drive the first sprocket 243 to rotate through the chain 243, and the first sprocket 230 drives the rotating rod 220 to continuously rotate.

[0050] As shown in Figures 1-7 In the embodiment, the rotating rod 220 is provided with a rotating groove with both ends being open, the rotating rod 220 is provided with the rotating disc 222 on the upper end face, the rotating disc 222 is provided with a plurality of rotating blocks 701 on the upper end face and close to the edge, the rotating blocks 701 are all provided with first inclined surfaces, and the opposite side walls of the cavity 201 are provided with the notches 501 penetrating the cover 110.

[0051] The dredging assembly includes the dredging rod 250 arranged in the rotating groove and extending out of the rotating groove at both ends, the upper end face of the dredging rod 250 is provided with the lifting disc 251, the side wall of the lifting disc 251 is provided with the limiting plates 510 opposite to each other and penetrating the corresponding notches 501 at one end, the lower end face of the lifting disc 251 and close to the edge is provided with a plurality of lifting rods 252, the lower end face of the lifting rods 252 is all provided with second inclined surfaces matched with the first inclined surfaces, the rotating rod 220 drives the dredging rod 250 to lift, and the dredging rod 250 dredges the discharge pipe 200.

[0052] In the embodiment, by rotating the groove, the rotating disc 222, the rotating block 701, the first inclined surface, the notch 501, the dredging rod 250, the lifting disc 251, the limiting plate 510, the lifting rod 252 and the second inclined surface, the rotating disc 222 is fixedly installed on the rotating rod 220, the rotating block 701 is fixedly installed on the rotating disc 222, the lifting disc 251 is fixedly installed on the dredging rod 250, one end of the limiting plate 510 penetrates through the notch 501 to limit the dredging rod 250, the notch 501 is arranged along the height direction of the dredging rod 250, the lifting rod 252 is fixedly installed on the lifting disc 251, when the rotating rod 220 rotates on the rotating disc 222, the rotating block 701 on the rotating disc 222 can extrude the second inclined surface on the lifting rod 252 through the first inclined surface, so that the lifting rod 252 drives the lifting disc 251 to move upwards, that is, the lifting disc 251 drives the dredging rod 250 to move upwards, when the rotating rod 220 continues to rotate, the first inclined surface on the rotating block 701 will release the extrusion on the second inclined surface, at this time, the dredging rod 250 will start to move downwards under the influence of its own gravity, when the dredging rod 250 moves downwards, the lower end of the dredging rod 250 will impact and insert the feed in the discharge pipe 200, and this reciprocation can realize the continuous impact and insertion of the lower end of the dredging rod 250 on the feed in the discharge pipe 200, so as to reduce the blockage of the feed in the discharge pipe 200.

[0053] When actually used, the dredging tip 260 is fixedly installed on the lower end surface of the dredging rod 250, the lower end of the dredging tip 260 is pointed, so that the dredging rod 250 can impact and insert the feed in the discharge pipe 200 through the dredging tip 260, so that the impact and insertion effect of the dredging rod 250 on the feed is better.

[0054] As shown in Figures 1-6 In the embodiment, the upper end surface of the cover 110 is provided with a barrel 111, the upper end surface of the lifting disc 251 is provided with a penetrating rod 600 penetrating through the cover 110 and extending into the barrel 111, the penetrating rod 600 in the barrel 111 is sleeved with a penetrating ring 601, and the barrel 111 is further provided with a first spring 610 for pushing the penetrating ring 601 to be close to the cover 110.

[0055] In the embodiment, through the arrangement of the barrel body 111, the penetrating rod 600, the penetrating ring 601 and the first spring 610, when the barrel body 111 is fixedly installed on the cover body 110, the penetrating rod 600 is fixedly installed on the lifting circular plate 251, and the penetrating ring 601 is fixedly installed on the penetrating rod 600, when the lifting circular plate 251 drives the dredging rod 250 to move upwards, the lifting circular plate 251 also drives the penetrating rod 600 to move upwards, the penetrating rod 600 moves upwards to compress the second spring 312 in the barrel body 111 through the penetrating ring 601, when the dredging rod 250 moves downwards to impact and insert the feed in the discharge pipe 200, the first spring 610 drives the penetrating ring 601 to move downwards, the penetrating ring 601 drives the lifting circular plate 251 to move downwards through the penetrating rod 600, that is, the lifting circular plate 251 drives the dredging rod 250 to move downwards, so that the dredging rod 250 moves downwards with greater force, so that the impact and insertion effect of the dredging sharp cone 260 on the feed is better.

[0056] As shown in Figures 1-3 In the embodiment, the lower end surface of the box body 100 is provided with opposite positioning plates 300.

[0057] The moving assembly comprises a plurality of mounting rods 310 arranged on the mounting plate 210, one end of each of the mounting rods 310 penetrates through the corresponding positioning plate 300, the penetrating end of each of the mounting rods 310 is sleeved with a mounting ring 311, and the mounting rod 310 between the mounting plate 210 and the positioning plate 300 is sleeved with a second spring 312, the second spring 312 is used to drive the mounting plate 210 to move towards the discharge pipe 200, and the penetrating end of the limiting plate 510 is provided with a moving piece, and the moving piece is used to drive the two mounting plates 210 to move away from the discharge pipe 200.

[0058] In the embodiment, through the arrangement of the positioning plate 300, the mounting rod 310, the mounting ring 311, the second spring 312 and the moving piece, when the positioning plate 300 is fixedly installed on the lower end surface of the box body 100, the mounting rod 310 is fixedly installed on the mounting plate 210, and the mounting ring 311 is fixedly installed on the penetrating end of the mounting rod 310, the mounting plate 210 is movably installed at the discharge pipe 200, when the second spring 312 drives the mounting plate 210 to move towards the discharge pipe 200, the insertion rods 211 on the two mounting plates 210 move towards each other, when the moving piece drives the two mounting plates 210 to move away from the discharge pipe 200, the insertion rods 211 on the two mounting plates 210 move away from each other, and the insertion rods 211 on the mounting plate 210 impact and insert the feed in the discharge pipe 200 in a reciprocating manner, so that the possibility of blockage of the feed in the discharge pipe 200 is further reduced, and the discharge effect of the discharge pipe 200 is improved.

[0059] When the insertion rods 211 on the two mounting plates 210 move towards or away from each other in actual use, one end of each of the insertion rods 211 is located in the discharge pipe 200.

[0060] As Figures 1-7 shown in the embodiment, the two sides of the two mounting plates 210 are each provided with a moving plate 320, one end of the moving plate 320 is provided with a moving block 321, and the third inclined surface is formed on the moving block 321.

[0061] The moving part includes a driving rod 120 provided on the limiting plate 510, the lower end surface of the driving rod 120 is provided with a driving block 330, the opposite side walls of the driving block 330 are provided with a fourth inclined surface matched with the third inclined surface, the driving block 330 extrudes the two moving blocks 321, and the two mounting plates 210 are away from the discharge pipe 200.

[0062] In the embodiment, by arranging the moving plate 320, the moving block 321, the third inclined surface, the driving rod 120, the driving block 330 and the fourth inclined surface, the moving plate 320 is fixedly installed on the mounting plate 210, the moving block 321 is fixedly installed on the moving plate 320, the driving rod 120 is fixedly installed on the limiting plate 510, and the driving block 330 is fixedly installed on the driving rod 120. When the lifting disc 251 is lifted, the lifting disc 251 drives the limiting plate 510 to lift at the notch 501. When the limiting plate 510 moves downward, the limiting plate 510 drives the driving rod 120 to move downward. At this time, the fourth inclined surface of the driving block 330 can extrude the third inclined surface of the moving block 321, so that the moving block 321 can drive the mounting plate 210 to move away from the discharge pipe 200 through the moving plate 320. At the same time, the mounting plate 210 compresses the second spring 312. When the limiting plate 510 moves upward, the fourth inclined surface of the driving block 330 extrudes the third inclined surface, so that the second spring 312 is not compressed, and the second spring 312 drives the corresponding mounting plate 210 to move to the discharge pipe 200. In this way, the two mounting plates 210 are continuously close to or away from each other, that is, the insertion rod 211 on the mounting plate 210 continuously hits and inserts the feed in the discharge pipe 200.

[0063] In actual use, the box body 100 is fixedly installed on the opposite side walls and is provided with a plurality of supports 121 for the corresponding driving rods 120 to penetrate. The supports 121 limit the driving rods 120, so that the driving rods 120 can stably lift.

[0064] In actual use, first, feed and medicine are added into the cavity 202 through the feeding opening 112, then the motor 241 drives the second sprocket 242 to rotate, the second sprocket 242 drives the first sprocket 230 to rotate through the chain 243, so that the rotating rod 220 drives the mixing rod 221 to rotate, and the feed and medicine in the cavity 202 are mixed, after mixing, the plug cylinder is disassembled from the discharge pipe 200, so that the mixed feed can be discharged to the feed line through the discharge pipe 200, at this time, the rotating rod 220 continuously rotates, the rotating rod 220 rotates the lifting rod 252 on the lifting disc 251 through the rotating block 701 on the rotating disc 222, so that the dredging rod 250 on the rotating rod 220 is lifted, so that the dredging sharp cone 260 at the lower end of the dredging rod 250 impacts and inserts the feed in the discharge pipe 200, and the discharge pipe 200 is dredged, when the dredging rod 250 is lifted, the limiting plate 510 drives the driving rod 120 to continuously lift, the driving rod 120 intermittently extrudes the moving block 321 through the driving block 330, so that the two mounting plates 210 can drive the insertion rods 211 to approach or move away from each other, so that the insertion rods 211 continuously impact and insert the feed in the discharge pipe 200, further reducing the possibility of feed blockage in the discharge pipe 200, and improving the discharge effect of the discharge pipe 200.

[0065] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the present application should be included in the scope of the present application.

Claims

1. A clogging-preventing line feeder comprising a box with a cavity, a discharge pipe being arranged on the lower end surface of the box and communicating with the cavity, characterized in that: The upper end face of the box body is provided with a cover body, the cover body is provided with a cavity, the cavity is provided with a rotating rod which extends into the cavity and can rotate, the side wall of the rotating rod is provided with a plurality of mixing rods, the cavity is further provided with a driving assembly, and the driving assembly is used for driving the rotating rod to rotate; The rotating rod is further provided with a dredging assembly, and the rotating rod rotates to drive the dredging assembly to dredge the discharge pipe; The side wall of the discharge pipe is provided with opposite and movable mounting plates, the mounting plates are each provided with a plurality of insertion rods which are inserted into the discharge pipe at one end, the mounting plates are each provided with a moving assembly, and the dredging assembly is used to drive the two moving assemblies to drive the corresponding mounting plates to reciprocate.

2. A line doser according to claim 1, characterized in that: The rotating rod in the cavity is provided with a first sprocket; The driving assembly comprises a fixed plate arranged in the cavity, the fixed plate is provided with a motor, a second sprocket is arranged on the output shaft of the motor, a chain is arranged between the first sprocket and the second sprocket, and the motor drives the rotating rod to rotate.

3. A line doser according to claim 2, wherein: The rotating rod is provided with a rotating groove which is open at both ends, the upper end face of the rotating rod is provided with a rotating disc, the upper end face of the rotating disc is provided with a plurality of rotating blocks near the edge, the rotating blocks are each provided with a first inclined surface, and opposite side walls of the cavity are provided with notches which penetrate the cover body; The dredging assembly comprises a dredging rod which is arranged in the rotating groove and extends out of the rotating groove at both ends, the upper end face of the dredging rod is provided with a lifting disc, opposite side walls of the lifting disc are provided with limiting plates which penetrate the corresponding notches at one end, the lower end face of the lifting disc is provided with a plurality of lifting rods near the edge, the lower end face of the lifting rods is each provided with a second inclined surface which cooperates with the first inclined surface, the rotating rod drives the dredging rod to lift to realize dredging of the discharge pipe.

4. A line doser according to claim 3, wherein: The upper end face of the cover body is provided with a barrel, the upper end face of the lifting disc is provided with a penetrating rod which penetrates the cover body at one end and extends into the barrel, the penetrating rod in the barrel is provided with a penetrating ring, and the barrel is further provided with a first spring which is used to push the penetrating ring to be close to the cover body.

5. A line doser according to claim 3, wherein: The lower end face of the box body is provided with opposite positioning plates; The moving assembly comprises a plurality of mounting rods which are arranged on the mounting plates, one end of each mounting rod penetrates the corresponding positioning plate, the penetrating end of each mounting rod is provided with a mounting ring, the mounting rod between the mounting plate and the positioning plate is provided with a second spring, the second spring is used to push the mounting plate to move towards the discharge pipe, and the penetrating end of each limiting plate is provided with a moving piece which is used to drive the two mounting plates to move away from the discharge pipe.

6. A line doser according to claim 5, wherein: The two mounting plates are each provided with a moving plate at both sides, one end of each moving plate is provided with a moving block, and the moving block is provided with a third inclined surface; The moving piece comprises a driving rod which is arranged on the limiting plate, the lower end face of the driving rod is provided with a driving block, opposite side walls of the driving block are provided with fourth inclined surfaces which cooperate with the third inclined surfaces, the driving block is used to press the two moving blocks to move away from the discharge pipe.

7. A line doser according to claim 3, wherein: The lower end face of the dredging rod is provided with a dredging sharp cone which is used for dredging.

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