Powder spraying machine with anti-blocking function

Abstract

The utility model discloses a powder spraying machine with an anti-blocking function, which comprises a storage hopper, a powder spraying pipe and an air pump, an exhaust end of the air pump is inserted into an air inlet of the powder spraying pipe and is in threaded connection with the air inlet of the powder spraying pipe, and a discharge end of the storage hopper is inserted into a feed port of the powder spraying pipe and is in threaded connection with the feed port of the powder spraying pipe. In the using process of the improved powder spraying machine, the operating air pump continuously sucks external air through the air inlet mechanism, injects the air into the powder spraying pipe and finally discharges the air from the discharging opening of the powder spraying pipe, and meanwhile the soft bag is made to contract to release the closed state in the opening in the bottom end of the powder spraying pipe; in the contraction process of the soft bag, the stirring piece is driven to break the balance state that the powder particle raw materials abut against one another and the balance state that the powder particle raw materials abut against the inner wall of the storage hopper are broken through, and therefore an opening in the bottom end of the storage hopper cannot be blocked by the powder raw materials; the use of the device is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of powder spraying machines, in particular to a powder spraying machine with an anti-clogging function. Background Art

[0002] The main function of a powder sprayer is to evenly spray or sprinkle powdered materials onto a target object. Specifically, it uses compressed air or other gases to generate a jet force, sprays the powdered material out of a nozzle, and brings the powdered material to the surface of the target object through the airflow, so that the powdered material adheres to the surface of the target object. In agricultural plant protection, it is generally used to spray medicinal powder or other protective agents on crops, so as to achieve the purpose of preventing and controlling diseases and promoting crop growth.

[0003] The existing powder spraying machine generally consists of three parts: a storage hopper, a powder spraying tube and an air pump. The air pump continuously injects gas into the powder spraying tube to form an airflow in the powder spraying tube. At the same time, the powder raw material in the storage hopper falls into the powder spraying tube by its own gravity and is discharged from the discharge port of the powder spraying tube by the airflow. However, in actual use, the powder spraying machine is often used intermittently, which makes the powder raw material in the storage hopper intermittently in a relatively stable state for a long time. If the mutual conflict between the powder particle raw materials and the mutual conflict between the powder particle raw materials and the inner wall of the storage hopper reach a balanced state, it will cause the storage hopper to be blocked, affecting the use of the device. Utility Model Content

[0004] The utility model aims to provide a powder spraying machine with an anti-clogging function so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a powder spraying machine with anti-clogging function, comprising a storage hopper, a powder spraying tube and an air pump, the exhaust end of the air pump is inserted into the air inlet of the powder spraying tube and is threadedly connected to the air inlet of the powder spraying tube, the discharge end of the storage hopper is inserted into the feed port of the powder spraying tube and is threadedly connected to the feed port of the powder spraying tube, a blocking mechanism is provided in the storage hopper, the blocking mechanism includes a soft bag, the soft bag is located in the bottom end opening of the storage hopper, the upper and lower sides of the soft bag are jointly provided with a support member, the top side of the soft bag is provided with a toggle member, and the outer peripheral side of the storage hopper is provided with an air intake mechanism.

[0006] Preferably, a sealing plate is provided at the top of the storage hopper, and the bottom end of the sealing plate is inserted into the top opening of the storage hopper and is threadedly connected to the top opening wall of the storage hopper.

[0007] Preferably, the support member includes two limit plates, which are relatively fixedly installed at the center positions of the upper and lower sides of the soft bag, and the limit plates are fixedly connected to the inner wall of the discharge port of the storage hopper through a plurality of connecting rods, and the side of the limit plate away from the soft bag is arranged in an arc shape.

[0008] Preferably, the air intake mechanism includes an L-shaped air intake pipe, one end of the air intake pipe is fixedly connected to the outer peripheral wall of the powder spraying pipe, the air intake end of the air pump is connected to a connecting pipe, and the air intake end of the connecting pipe is inserted into the air intake pipe and fixedly connected to the pipe wall of the air intake pipe, the other end of the air intake pipe is provided with a conduit, and one end of the conduit is inserted into the opening of the other end of the air intake pipe and contacts with the inner wall of the opening at the other end of the air intake pipe, the other end of the conduit extends into the soft bag, and the conduit passes through the bucket wall of the storage hopper and the limiting plate below and is fixedly connected to the bucket wall of the storage hopper, the limiting plate below and the bag wall of the soft bag.

[0009] Preferably, a piston plate is provided in the air intake pipe, and the outer peripheral wall of the piston plate is in contact with the inner wall of the air intake pipe. A spring is provided on the side of the piston plate away from the conduit, and one end of the spring is fixedly connected to the piston plate.

[0010] Preferably, a mesh plate is fixedly installed in the air intake pipe, and the other end of the spring is fixedly connected to the mesh plate, a pressure limiting valve is provided on the outer peripheral side of the air intake pipe, and the air intake end of the pressure limiting valve is inserted into the conduit and fixedly connected to the tube wall of the conduit, and the pressure limiting valve is located above the connecting pipe.

[0011] Preferably, the toggle member includes a fixed tube, the bottom of which passes through the upper limiting plate and the cyst wall of the soft cyst and is fixedly connected to the upper limiting plate and the cyst wall of the soft cyst, the interior of the fixed tube is communicated with the interior of the soft cyst, a piston rod is slidably installed in the top opening of the fixed tube, and the top end of the piston rod is hemispherically arranged and extends outside the fixed tube.

[0012] The utility model has the following beneficial effects:

[0013] During use of the improved powder spraying machine, the running air pump continuously inhales external air through the air intake mechanism, injects the air into the powder spraying pipe and finally discharges the air from the discharge port of the powder spraying pipe, and at the same time, the soft bag contracts to release the closed state in the bottom opening of the powder spraying pipe, so that the powder raw materials in the storage hopper fall into the powder spraying pipe in turn and are discharged along with the air flow. In the process of contraction of the soft bag, the toggle member is driven to break the equilibrium state of the powder raw materials conflicting with each other and the powder raw materials and the inner wall of the storage hopper, so that the powder raw materials will not block the bottom opening of the storage hopper and affect the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is an overall schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the storage hopper of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 It is a schematic diagram of the internal structure of the air intake pipe of the utility model.

[0019] In the figure: 1. storage hopper; 2. powder spraying tube; 3. air pump; 4. blocking mechanism; 41. soft bag; 42. support member; 421. limit plate; 422. connecting rod; 43. toggle member; 431. fixed tube; 432. piston rod; 5. air intake mechanism; 51. air intake pipe; 52. conduit; 53. piston plate; 54. spring; 55. mesh plate; 56. pressure limiting valve; 57. connecting pipe; 6. sealing plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The utility model provides a technical solution: Figure 1-3 The utility model discloses a powder spraying machine with anti-clogging function, including a storage hopper 1, a powder spraying pipe 2 and an air pump 3, the exhaust end of the air pump 3 is inserted into the air inlet of the powder spraying pipe 2 and is threadedly connected to the air inlet of the powder spraying pipe 2, the discharge end of the storage hopper 1 is inserted into the feed port of the powder spraying pipe 2 and is threadedly connected to the feed port of the powder spraying pipe 2, a blocking mechanism 4 is provided in the storage hopper 1, and the blocking mechanism 4 includes a soft bag 41, and the soft bag 41 is located in the bottom end opening of the storage hopper 1, and the upper and lower sides of the soft bag 41 are jointly provided with a support member 42, the top side of the soft bag 41 is provided with a toggle member 43, and the outer peripheral side of the storage hopper 1 is provided with an air intake mechanism 5.

[0022] In this embodiment, during the use of the improved powder sprayer, the running air pump 3 continuously inhales external air through the air intake mechanism 5, injects the air into the powder spraying pipe 2, and finally discharges it from the discharge port of the powder spraying pipe 2. At the same time, part of the gas in the soft bag 41 is sucked out through the air intake mechanism 5, so that the soft bag 41 contracts and automatically releases the closed state in the bottom opening of the powder spraying pipe 2. At the same time, the contraction of the soft bag 41 drives the toggle member 43 to operate in coordination with the search of the soft bag 41, breaking the equilibrium state of the mutual conflict between the powder particle raw materials and the mutual conflict between the powder particle raw materials and the inner wall of the storage hopper 1, so that the powder raw materials in the storage hopper 1 fall into the powder spraying pipe 2 in turn and are discharged together with the air flow, so that the powder raw materials are attached to external objects in large quantities to avoid the mutual conflict between the powder particle raw materials and the mutual conflict between the powder particle raw materials and the inner wall of the storage hopper 1 to reach a balanced state, causing the discharge blockage in the storage hopper 1 to affect the use of the device.

[0023] In a further preferred embodiment of the present invention, Figure 2 As shown, a sealing plate 6 is provided at the top of the storage hopper 1, and the bottom end of the sealing plate 6 is inserted into the top opening of the storage hopper 1 and is threadedly connected to the top opening wall of the storage hopper 1;

[0024] In this embodiment, when the powder material in the storage hopper 1 falls into the powder spraying tube 2 in sequence, the powder material in the storage hopper 1 will not flow out of the storage hopper 1 due to the blocking of the top opening in the storage hopper 1.

[0025] It should be noted that the sealing plate 6 is a mesh plate 55, so that part of the external gas can flow into the storage hopper 1 so that a negative pressure state will not occur in the storage hopper 1 to affect the operation of the device.

[0026] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the support member 42 includes two limit plates 421, which are relatively fixedly mounted at the center positions of the upper and lower sides of the soft bag 41, and the limit plates 421 are fixedly connected to the inner wall of the discharge port of the storage hopper 1 through a plurality of connecting rods 422, and the side of the limit plates 421 away from the soft bag 41 is arranged in an arc shape;

[0027] In this embodiment, after the soft bag 41 shrinks, the powder material in the storage hopper 1 passes through the gaps between the connecting rod 422, the limiting plate 421 and the inner wall of the storage hopper 1 in sequence, and finally falls into the powder spraying tube 2 in sequence from the bottom opening of the storage hopper 1;

[0028] It should be noted that the curved surface on the top side of the limiting plate 421 allows the powder raw material above the limiting plate 421 to slide along the curved surface of the limiting plate 421 to the surrounding areas of the limiting plate 421, thereby avoiding the situation where part of the powder raw material cannot fall due to the obstruction of the limiting plate 421.

[0029] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the air intake mechanism 5 includes an air intake pipe 51 which is arranged in an L-shape, one end of the air intake pipe 51 is fixedly connected to the outer peripheral wall of the powder spraying pipe 2, the air intake end of the air pump 3 is connected and equipped with a connecting pipe 57, and the air intake end of the connecting pipe 57 is inserted into the air intake pipe 51 and fixedly connected to the pipe wall of the air intake pipe 51, the other end of the air intake pipe 51 is provided with a conduit 52, and one end of the conduit 52 is inserted into the opening of the other end of the air intake pipe 51 and contacts with the inner wall of the opening of the other end of the air intake pipe 51, the other end of the conduit 52 extends into the soft bag 41, and the conduit 52 passes through the bucket wall of the storage hopper 1 and the limiting plate 421 below and is fixedly connected to the bucket wall of the storage hopper 1, the limiting plate 421 below and the bag wall of the soft bag 41;

[0030] In this embodiment, the L-shaped air inlet pipe 51 can form a handle on the top side of the powder spraying pipe 2, and the operator can move the device and adjust the angle through the handle, thereby changing the powder spraying position of the device.

[0031] In a further preferred embodiment of the present invention, Figure 4 As shown, a piston plate 53 is provided in the air intake pipe 51, and the outer peripheral wall of the piston plate 53 contacts the inner wall of the air intake pipe 51, and a spring 54 is provided on the side of the piston plate 53 away from the conduit 52, and one end of the spring 54 is fixedly connected to the piston plate 53;

[0032] In this embodiment, the spring 54 can continuously apply a thrust to the piston plate 53 in the direction of the conduit 52 , so that when the piston plate 53 loses the external force constraint, it automatically moves to the direction of the conduit 52 to reset.

[0033] In a further preferred embodiment of the present invention, Figure 1-4 As shown, a mesh plate 55 is fixedly installed in the air intake pipe 51, and the other end of the spring 54 is fixedly connected to the mesh plate 55. A pressure limiting valve 56 is provided on the outer peripheral side of the air intake pipe 51, and the air intake end of the pressure limiting valve 56 is inserted into the conduit 52 and fixedly connected to the pipe wall of the conduit 52. The pressure limiting valve 56 is located above the connecting pipe 57;

[0034] The air inlet pipe 51 is then drawn back into the air filter 52 and the air inlet pipe 51 is then drawn back into the air filter 52. The air inlet pipe 51 is drawn back into the air filter 52 and the air inlet pipe 51 is then drawn back into the air filter 52.

[0035] In a further preferred embodiment of the present invention, Figure 3 As shown, the toggle member 43 includes a fixed tube 431, the bottom of which penetrates through the upper limiting plate 421 and the bladder wall of the soft bladder 41 and is fixedly connected to the upper limiting plate 421 and the bladder wall of the soft bladder 41, the interior of the fixed tube 431 communicates with the interior of the soft bladder 41, a piston rod 432 is slidably mounted in the top opening of the fixed tube 431, and the top of the piston rod 432 is hemispherical and extends outside the fixed tube 431;

[0036] In this embodiment, under the negative pressure state in the soft bag 41, the gas in the fixed tube 431 can be sucked into the soft bag 41, thereby pulling the piston rod 432 into the fixed tube 431, so that a gap is formed in the powder raw material in the storage hopper 1, and part of the powder loses the support of the support rod and falls to fill the gap, thereby breaking the equilibrium state in which the powder particle raw materials conflict with each other and the powder particle raw materials and the inner wall of the storage hopper 1 conflict with each other.

[0037] Working principle: When using the powder sprayer, the operator first screws the sealing plate 6 out of the top opening of the storage hopper 1, pours an appropriate amount of powder raw material into the storage hopper 1 from the top opening of the storage hopper 1, and screws the sealing cover into the top opening of the storage hopper 1 again to reclose the top opening of the storage hopper 1, and the feeding of the powder raw material is completed;

[0038] After the feeding operation of the powder spraying machine is completed, the air pump 3 is started to continuously extract the gas in the conduit 52 through the connecting pipe 57, and the extracted gas is injected into the powder spraying pipe 2. As the diameter of the feeding port of the powder spraying pipe 2 increases, the air flow rate decreases, and the air flows along the powder spraying pipe 2, and finally discharged from the discharge port of the powder spraying pipe 2.

[0039] When the air pump 3 draws air from the air inlet pipe 51, the air intake at the pressure limiting valve 56 is limited.

[0040] As a result, the amount of gas flowing out of the air intake pipe 51 is greater than the amount of external gas passing through the pressure limiting valve 56 and entering the air intake pipe 51, and finally the negative pressure in the air intake pipe 51 gradually increases, and at the same time, the air flow rate in the pressure limiting valve 56 gradually increases, until the pressure difference between the two ends of the pressure limiting valve reaches the threshold value, and the amount of gas flowing into the air intake pipe 51 from the outside is equal to the amount of gas flowing out of the air intake pipe 51, and in the process of the negative pressure intensity in the air intake pipe 51 gradually decreasing, the piston plate 53 will be pulled to flow toward the mesh plate 55 to compress the spring 54;

[0041] During the movement of the piston plate 53, the air pressure at the position near the guide tube 52 in the air inlet pipe 51 is gradually reduced, so that part of the gas in the soft bag 41 and the gas in the fixed tube 431 are sucked into the connecting tube 57 through the guide tube 52. As the gas in the soft bag 41 and the fixed tube 431 is lost, a negative pressure state is formed in the soft bag 41 and the fixed tube 431. The negative pressure in the fixed tube 431 sucks the piston rod 432 into the fixed tube 431. The negative pressure in the soft bag 41 causes the soft bag 41 to shrink and deform, thereby releasing the closed state of the bottom opening of the storage hopper 1.

[0042] It should be noted that the contraction and deformation of the soft capsule 41 can release the support of the powder raw material on the top side of the soft capsule 41, and as part of the position of the soft capsule 41 moves upward during the deformation process, part of the powder raw material on the top side of the soft capsule 41 can be pushed and resisted, thereby breaking the equilibrium state of the powder granular raw materials on the top side of the soft capsule 41 and the powder granular raw materials and the inner wall of the storage hopper 1, so that the raw material on the top side of the soft capsule 41 can normally pass through the gap between the connecting rod 422, the limit plate 421 and the inner wall of the storage hopper 1; in the process of the piston rod 432 being retracted into the fixed cylinder, a gap can be formed at the center position of the powder raw material at the bottom of the storage hopper 1, and due to the gravity of the powder raw material in the storage hopper 1, part of the raw material in the storage hopper 1 moves downward, thereby breaking the equilibrium state of the powder granular raw materials on the top of the soft capsule 41 and the powder granular raw materials and the inner wall of the storage hopper 1.

[0043] After the closed state of the bottom opening of the storage hopper 1 is released, due to the gravity of the powder material in the storage hopper 1, the powder material in the storage hopper 1 passes through the gap between the soft capsule 41 and the inner wall of the bottom opening of the storage hopper 1 in turn, and finally falls into the powder spraying tube 2 from the bottom opening of the storage hopper 1, and is discharged from the discharge port of the powder spraying tube 2 due to the airflow inside the powder spraying tube 2, and is attached to external objects in large quantities with the airflow.

[0044] When the user stops the operation of the air pump 3, due to the push of the spring 54 on the piston plate 53, the external gas gradually passes through the pressure limiting valve 56 and flows into the intake pipe 51, so that the pressure in the intake pipe 51 gradually increases and recovers. At this time, the spring 54 pushes the piston plate 53 to move and reset, and pushes the gas sucked into the intake pipe 51 into the soft bag 41 again through the conduit 52, so that the soft bag 41 expands and deforms rapidly, and then the outer peripheral wall of the soft bag 41 is re-fitted with the bottom opening of the storage hopper 1 to close the bottom opening of the storage hopper 1, and the powder raw material in the storage hopper 1 will not continue to fall into the powder spraying tube 2.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A powder spraying machine with anti-clogging function, comprising a storage hopper (1), a powder spraying pipe (2) and an air pump (3), wherein the exhaust end of the air pump (3) is inserted into the air inlet of the powder spraying pipe (2) and is threadedly connected to the air inlet of the powder spraying pipe (2), and the discharge end of the storage hopper (1) is inserted into the feed port of the powder spraying pipe (2) and is threadedly connected to the feed port of the powder spraying pipe (2), characterized in that: The storage hopper (1) is provided with a blocking mechanism (4), the blocking mechanism (4) comprising a soft bag (41), the soft bag (41) being located in the bottom opening of the storage hopper (1), the upper and lower sides of the soft bag (41) being provided with a support member (42), the top side of the soft bag (41) being provided with a toggle member (43), and the outer peripheral side of the storage hopper (1) being provided with an air intake mechanism (5).

2. A powder spraying machine with anti-clogging function according to claim 1, characterized in that: The top end of the storage hopper (1) is provided with a sealing plate (6), and the bottom end of the sealing plate (6) is inserted into the top opening of the storage hopper (1) and is threadedly connected to the top opening wall of the storage hopper (1).

3. A powder spraying machine with anti-clogging function according to claim 2, characterized in that: The support member (42) comprises two limit plates (421), the two limit plates (421) are relatively fixedly mounted at the center positions of the upper and lower sides of the soft bag (41), and the limit plates (421) are fixedly connected to the inner wall of the discharge port of the storage hopper (1) through a plurality of connecting rods (422), and the side of the limit plates (421) away from the soft bag (41) is arranged in an arc shape.

4. A powder spraying machine with anti-clogging function according to claim 3, characterized in that: The air intake mechanism (5) comprises an air intake pipe (51) arranged in an L-shape, one end of the air intake pipe (51) is fixedly connected to the outer peripheral wall of the powder spraying pipe (2), the air intake end of the air pump (3) is connected to a connecting pipe (57), and the air intake end of the connecting pipe (57) is inserted into the air intake pipe (51) and fixedly connected to the pipe wall of the air intake pipe (51), the other end of the air intake pipe (51) is provided with a conduit (52), and one end of the conduit (52) is inserted into the opening of the other end of the air intake pipe (51) and contacts the inner wall of the opening of the other end of the air intake pipe (51), the other end of the conduit (52) extends into the soft bag (41), and the conduit (52) passes through the bucket wall of the storage hopper (1) and the limiting plate (421) below and is fixedly connected to the bucket wall of the storage hopper (1), the limiting plate (421) below and the bag wall of the soft bag (41).

5. A powder spraying machine with anti-clogging function according to claim 4, characterized in that: A piston plate (53) is provided in the air intake pipe (51), and the outer peripheral wall of the piston plate (53) is in contact with the inner wall of the air intake pipe (51). A spring (54) is provided on the side of the piston plate (53) away from the guide tube (52), and one end of the spring (54) is fixedly connected to the piston plate (53).

6. A powder spraying machine with anti-clogging function according to claim 5, characterized in that: A mesh plate (55) is fixedly installed in the air intake pipe (51), and the other end of the spring (54) is fixedly connected to the mesh plate (55). A pressure limiting valve (56) is provided on the outer peripheral side of the air intake pipe (51), and the air intake end of the pressure limiting valve (56) is inserted into the conduit (52) and fixedly connected to the pipe wall of the conduit (52). The pressure limiting valve (56) is located above the connecting pipe (57).

7. A powder spraying machine with anti-clogging function according to claim 6, characterized in that: The toggle member (43) comprises a fixed tube (431), the bottom of which penetrates through the upper limiting plate (421) and the sac wall of the soft sac (41) and is fixedly connected to the upper limiting plate (421) and the sac wall of the soft sac (41), the interior of the fixed tube (431) is communicated with the interior of the soft sac (41), a piston rod (432) is slidably mounted in the top opening of the fixed tube (431), and the top end of the piston rod (432) is hemispherically arranged and extends outside the fixed tube (431).

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