Fertilizer packaging and weighing device

Abstract

The utility model discloses a fertilizer packaging and weighing device, relates to the field of fertilizer production, and aims to solve the problems that in the prior art, due to the fact that gas exists in a packaging bag, when fertilizer is poured, air pressure in the bag is increased, a bag opening is opened, the fertilizer is splashed, the packaging efficiency is affected, and waste is caused. A discharging pipe is fixedly connected to the middle of the lower end of the fertilizer metering bagging machine, side supporting plates are fixedly connected to the positions, between the two supporting columns on the two sides, of the two sides of the discharging pipe, semicircular clamping plates are connected to the inner sides of the two side supporting plates, and an air guide pipe is arranged on one side of the interior of the discharging pipe; the upper end of the air guide pipe extends out of one side of the discharging pipe and is fixedly connected with a detection pipe, the outer side of the detection pipe is fixedly connected with a vacuum pump, and through cooperation of the vacuum pump, the air guide pipe and an air pressure detector, air in a packaging bag can be completely pumped out before charging, and a negative pressure environment is formed; the problems that the bag opening is opened and the fertilizer is splashed due to the increase of air pressure in the bag when the fertilizer is poured are effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production, specifically a fertilizer packaging and weighing device. Background Technology

[0002] Fertilizers are substances that provide essential nutrients for plant growth, primarily used to supplement insufficient soil nutrients and promote increased crop yield and quality. They can be classified by source into organic fertilizers (such as manure and compost) and chemical fertilizers (such as nitrogen, phosphorus, and potassium fertilizers); and by function into base fertilizers, top dressings, and foliar fertilizers. The core components of fertilizers include nitrogen (promoting leaf and branch growth), phosphorus (aiding root development and flowering and fruiting), potassium (enhancing stress resistance), and micronutrients such as calcium and magnesium. During fertilizer production, they need to be bagged using packaging and weighing devices.

[0003] For example, authorization announcement number CN221418816U discloses a weighing and packaging device for fertilizer production, which solves the current problem of inconvenience in fitting the openings of packaging bags of different sizes onto the discharge pipe. The device includes a frame, with a conveyor belt on the inner side of the frame. Several weighing sensors are evenly installed on the conveyor belt. Two U-shaped frames are symmetrically fixedly installed on the top of the frame, and an installation frame is fixedly installed between the two U-shaped frames. A material cylinder is fixedly fitted inside the installation frame. A feed hopper is fixedly installed on the top of the material cylinder, and a discharge pipe is fixedly installed on the bottom of the material cylinder. This invention, through the cooperation between the sleeve plate, the top rod, and the limiting plate, allows the lifting pipe to rise and fall. Through the cooperation between the sliding rod and the slider, and the spring and the top block, one end of each of the two insertion rods can be inserted into two corresponding insertion holes, thereby fixing the lifting pipe and facilitating adjustment of the lifting pipe's height to accommodate packaging bags of different sizes.

[0004] In the aforementioned technology, the packaging device clamps and fixes the bag opening to the feeding pipe using two arc-shaped clamps. However, due to the presence of gas inside the packaging bag, the air pressure inside the bag increases when fertilizer is poured in, causing the bag opening to be opened, resulting in fertilizer splashing, affecting packaging efficiency and causing waste. Therefore, the market urgently needs to develop a fertilizer packaging weighing device to help people solve the existing problems. Utility Model Content

[0005] The purpose of this utility model is to provide a fertilizer packaging and weighing device to solve the problem mentioned in the background art where the packaging device clamps and fixes the bag opening to the feeding pipe through two arc-shaped clamps. However, due to the presence of gas inside the packaging bag, when fertilizer is poured in, the air pressure inside the bag increases, causing the bag opening to be stretched open, resulting in fertilizer splashing, affecting packaging efficiency and causing waste.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fertilizer packaging and weighing device, comprising a supporting base plate, a fertilizer storage tank being provided at the upper end of the supporting base plate, a fertilizer metering and bagging machine being fixedly connected to the lower end of the fertilizer storage tank, a feeding pipe being fixedly connected to the middle of the lower end of the fertilizer metering and bagging machine, the outer wall of the fertilizer storage tank being fixedly connected to the upper end of the supporting base plate by four supporting columns, side support plates being fixedly connected between the two supporting columns on both sides of the feeding pipe, semi-circular clamps being connected to the inner sides of the two side support plates, an air guide pipe being provided on one side inside the feeding pipe, a detection pipe being fixedly connected to the upper end of the air guide pipe extending out of one side of the feeding pipe, and a vacuum pump being fixedly connected to the outer side of the detection pipe.

[0007] Preferably, a first electro-hydraulic rod is fixedly connected to the middle of the outer side of each of the two side support plates, and the telescopic ends of the two first electro-hydraulic rods pass through the side support plates and are respectively fixedly connected to the middle of the outer side of the two semi-circular clamping plates.

[0008] Preferably, guide rods are fixedly connected to both the front and rear ends of the two side support plates, and connecting plates are fixedly connected to both the front ends of the two semi-circular clamping plates, with guide tubes fixedly connected to the outer side of the connecting plates.

[0009] Preferably, the two guide rods pass through the guide tubes on the connecting plates at both ends of the front ends of the two semi-circular clamps on both sides of the middle section.

[0010] Preferably, a pressure detector is fixedly installed at the upper end of the detection tube, and a detection probe is connected to the lower end of the pressure detector. The detection probe is inserted into the inside of the detection tube, and the vacuum pump and the feeding tube are fixedly connected by an L-shaped fixing rod.

[0011] Preferably, a lifting support plate is provided at the middle of the upper end of the supporting base plate, and the middle of the lower end of the lifting support plate is connected to the upper end surface of the supporting base plate through a second electro-hydraulic rod.

[0012] Preferably, the front and rear ends of the lower middle part of the lifting support plate are connected to the upper surface of the support base plate by guide telescopic rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by combining a vacuum pump, an air duct and an air pressure detector, the air inside the packaging bag can be completely extracted before filling, forming a negative pressure environment, which effectively prevents the bag opening from opening and fertilizer from splashing due to the increase in air pressure inside the bag during fertilizer filling, and significantly improves the cleanliness of the packaging and the utilization rate of materials.

[0015] (2) In this utility model, a combination structure of a semi-circular clamping plate and a first electro-hydraulic rod is adopted, which can adapt to packaging bags of different sizes. The stability of the clamping process is ensured by the guide rod and guide tube, so that the bag mouth is firmly fixed on the feeding tube and the bag mouth is prevented from loosening or falling off during the filling process.

[0016] (3) In this utility model, a lifting support plate and a second electro-hydraulic rod are added, which can dynamically adjust the support position according to the height of the packaging bag, prevent the bag from falling due to the weight of the fertilizer during loading, further ensure the stability and reliability of the packaging process, and improve production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a fertilizer packaging weighing device according to the present invention;

[0018] Figure 2 This is a front view of the fertilizer packaging weighing device of this utility model;

[0019] Figure 3 This is a front sectional view of the present invention;

[0020] Figure 4 This is a side sectional view of the present invention;

[0021] Figure 5 This is a detailed enlarged view of part A of this utility model.

[0022] In the diagram: 1. Support base plate; 101. Support column; 102. Side support plate; 103. Guide rod; 104. First electro-hydraulic rod; 2. Fertilizer storage tank; 201. Fertilizer metering and bagging machine; 202. Feeding pipe; 3. Semi-circular clamping plate; 301. Connecting plate; 302. Guide pipe; 4. Air guide pipe; 401. Detection pipe; 402. Vacuum pump; 403. L-shaped fixing rod; 5. Air pressure detector; 501. Detection probe; 6. Lifting support plate; 601. Second electro-hydraulic rod; 602. Guide telescopic rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-5This utility model provides an embodiment of a fertilizer packaging and weighing device, comprising a supporting base plate 1, a fertilizer storage tank 2 disposed on the upper end of the supporting base plate 1, a fertilizer metering and bagging machine 201 fixedly connected to the lower end of the fertilizer storage tank 2, a feeding pipe 202 fixedly connected to the lower middle part of the fertilizer metering and bagging machine 201, four supporting columns 101 fixedly connecting the outer wall of the fertilizer storage tank 2 to the upper end of the supporting base plate 1, and side support plates 102 fixedly connected between the two side support columns 101 and on both sides of the feeding pipe 202, with semi-circular clamps 3 connected to the inner sides of the two side support plates 102, an air guide pipe 4 disposed on one side inside the feeding pipe 202, a detection pipe 401 fixedly connected to the upper end of the air guide pipe 4 extending out of one side of the feeding pipe 202, a vacuum pump 402 fixedly connected to the outer side of the detection pipe 401, and a pressure detector 5 fixedly disposed on the upper end of the detection pipe 401. The detector 5 is connected to a detection probe 501 at its lower end. The detection probe 501 is inserted into the detection tube 401. The vacuum pump 402 is fixedly connected to the feeding tube 202 by an L-shaped fixing rod 403. The opening of the packaging bag is put into the lower end of the feeding tube 202. The opening of the packaging bag is clamped and fixed to the outer wall of the feeding tube 202 by the relative movement of two semi-circular clamps 3. At this time, the lower end of the air guide tube 4 is connected to the inside of the packaging bag. The vacuum pump 402 draws air from the packaging bag through the detection tube 401 and the air guide tube 4, so that the air inside the packaging bag is completely extracted. The air pressure detector 5 monitors the air pressure inside the detection tube 401 through the detection probe 501. When the air pressure inside the detection tube 401 is close to the vacuum state, the vacuum pump 402 is stopped. At this time, the air inside the packaging bag is completely removed, and the waste inside the fertilizer storage tank 2 can be metered and bagged by the fertilizer metering and bagging machine 201.

[0025] Please see Figure 3 and Figure 4 Two first electro-hydraulic rods 104 are fixedly connected to the middle of the outer side of each of the two side support plates 102. The telescopic ends of the two first electro-hydraulic rods 104 pass through the side support plates 102 and are fixedly connected to the middle of the outer side of each of the two semi-circular clamping plates 3. Guide rods 103 are fixedly connected to the front and rear ends of the two side support plates 102. Connecting plates 301 are fixedly connected to the front ends of each of the two semi-circular clamping plates 3. Guide tubes 302 are fixedly connected to the outer side of the connecting plates 301. The two guide rods 103 pass through the middle sides of the guide tubes 302 on the connecting plates 301 at the front ends of the two semi-circular clamping plates 3. The two first electro-hydraulic rods 104 push the two semi-circular clamping plates 3 to move relative to each other, thereby causing the two semi-circular clamping plates 3 to clamp the packaging bag onto the feeding tube 202. The movement of the semi-circular clamping plates 3 causes them to slide along the two guide rods 103 through the two guide tubes 302 for guidance.

[0026] Please see Figure 2 and Figure 3A lifting support plate 6 is provided at the upper middle part of the support base plate 1. The lower middle part of the lifting support plate 6 is connected to the upper surface of the support base plate 1 through a second electro-hydraulic rod 601. The front and rear ends of the lower middle part of the lifting support plate 6 are connected to the upper surface of the support base plate 1 through guide telescopic rods 602. The lifting support plate 6 is pushed to rise and fall by the second electro-hydraulic rod 601, so that the lifting support plate 6 is flush with the lower end of the packaging bag after adjustment, to prevent the lower end of the packaging bag from being suspended when it is being filled, and thus prevent the bag mouth from falling off the feeding pipe 202 due to gravity when the fertilizer is being bagged.

[0027] Working Principle: During use, the bag opening is inserted into the lower end of the feeding pipe 202. The first electro-hydraulic rods 104 on both sides are activated, pushing the two semi-circular clamping plates 3 to move towards each other along the guide rod 103. The semi-circular clamping plates 3 tightly clamp and fix the bag opening to the outer wall of the feeding pipe 202. Then, the vacuum pump 402 is activated, extracting air from inside the bag through the air guide pipe 4. The air pressure detector 5 monitors the air pressure changes in the detection tube 401 in real time. When the detection probe 501 detects that the air pressure reaches the preset vacuum threshold, the vacuum pump 402 automatically stops, ensuring that all air is completely expelled from the bag. At this time, the fertilizer metering and bagging machine 201 is activated, and the fertilizer in the fertilizer storage tank 2 is accurately metered and then loaded into the bag through the feeding pipe 202. During the bagging process, the second electro-hydraulic rod 601 adjusts the height of the lifting support plate 6 according to the length of the bag, maintaining stable lifting and lowering through the guide telescopic rod 602, ensuring that the support plate always supports the bottom of the bag and prevents the bag opening from loosening due to the weight of the fertilizer. This device effectively solves the problems of bag opening and detachment caused by air pressure in traditional technologies through dual fixation (semi-circular clamping + vacuum adsorption) and dynamic support, achieving efficient dust-free packaging.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fertilizer packaging weighing device, comprising a supporting base plate (1), characterized in that: A fertilizer storage tank (2) is provided on the upper end of the supporting base plate (1). A fertilizer metering and bagging machine (201) is fixedly connected to the lower end of the fertilizer storage tank (2). A feeding pipe (202) is fixedly connected to the middle of the lower end of the fertilizer metering and bagging machine (201). The outer wall of the fertilizer storage tank (2) is fixedly connected to the upper end of the supporting base plate (1) by four supporting columns (101). Side support plates (102) are fixedly connected between the two supporting columns (101) on both sides and on both sides of the feeding pipe (202). Semi-circular clamps (3) are connected to the inner sides of the two side support plates (102). A gas guide pipe (4) is provided on one side inside the feeding pipe (202). The upper end of the gas guide pipe (4) extends out of one side of the feeding pipe (202) and is fixedly connected to a detection pipe (401). A vacuum pump (402) is fixedly connected to the outer side of the detection pipe (401).

2. The fertilizer packaging and weighing device according to claim 1, characterized in that: Two side support plates (102) are fixedly connected to the middle of their outer sides with first electro-hydraulic rods (104). The telescopic ends of the two first electro-hydraulic rods (104) pass through the side support plates (102) and are fixedly connected to the middle of the outer sides of the two semi-circular clamps (3).

3. The fertilizer packaging and weighing device according to claim 1, characterized in that: Guide rods (103) are fixedly connected to both ends of the two side support plates (102), and connecting plates (301) are fixedly connected to both ends of the front ends of the two semi-circular clamping plates (3). Guide tubes (302) are fixedly connected to the outside of the connecting plates (301).

4. A fertilizer packaging and weighing device according to claim 3, characterized in that: The two guide rods (103) pass through the guide tubes (302) on the connecting plates (301) at both ends of the front end of the two semi-circular clamps (3), respectively.

5. A fertilizer packaging and weighing device according to claim 1, characterized in that: A pressure detector (5) is fixedly installed at the upper end of the detection tube (401), and a detection probe (501) is connected to the lower end of the pressure detector (5). The detection probe (501) is inserted into the inside of the detection tube (401), and the vacuum pump (402) is fixedly connected to the feed tube (202) by an L-shaped fixing rod (403).

6. The fertilizer packaging and weighing device according to claim 1, characterized in that: A lifting support plate (6) is provided at the middle of the upper end of the supporting base plate (1), and the middle of the lower end of the lifting support plate (6) is connected to the upper end surface of the supporting base plate (1) by a second electro-hydraulic rod (601).

7. A fertilizer packaging weighing device according to claim 6, characterized in that: The front and rear ends of the lower middle part of the lifting support plate (6) are connected to the upper end of the support base plate (1) by guide telescopic rods (602).

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