A grain suction machine with a screening module

Abstract

This utility model discloses a grain suction machine with a screening module, relating to the field of agricultural machinery technology. It includes a Roots blower, with an air inlet pipe installed at the blower's air inlet. Several screening modules are installed on the air inlet pipe. Each screening module includes a screening chamber and a first electric valve. The first electric valve is installed on the air inlet pipe. The screening chamber is connected to the air inlet pipe via a second connecting pipe and a third connecting pipe. A second electric valve is installed on the second connecting pipe, and a third electric valve is installed on the third connecting pipe. The first electric valve is located between the second and third connecting pipes. A screening cylinder is installed inside the screening chamber. This utility model filters the air entering the Roots blower through the screening chamber within the screening module, preventing impurities from entering the blower and significantly extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of agricultural and grain machinery technology, specifically a grain suction machine with a screening module. Background Technology

[0002] Grain suction machines are one of the important pieces of equipment in my country's grain transportation and distribution. Grain suction machines generally use negative pressure to suck up grain and transport it to a specific location in this way.

[0003] As a key piece of equipment in my country's grain transportation and distribution system, the grain suction machine's core operating mode is to powerfully suck up bulk grain through a negative pressure environment. Currently, this equipment is widely used in various stages such as ports, grain depots, processing plants, and transfer stations, responsible for quickly and continuously extracting grain from bulk grain piles, truck beds, or ship holds, and transporting it through pipelines to designated warehouses and hoppers. Utilizing the negative pressure conveying principle, it significantly improves operational efficiency, effectively reduces grain breakage and loss during handling, and minimizes dust dispersion.

[0004] However, when the current grain suction machine is in use, a large amount of dust will enter the Roots blower, which may cause equipment blockage, wear and tear and abnormal operation, increasing maintenance costs; and the current screening function mostly relies on screening consumables, which are prone to blockage, causing the screening function to fail. Utility Model Content

[0005] To address the problem mentioned in the background art that a large amount of dust enters the Roots blower, the purpose of this utility model is to provide a grain suction machine with a screening module.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grain suction machine with a screening module, comprising a first fixed support, a grain suction chamber mounted on the first fixed support, a rotary feeding valve mounted on the lower end of the grain suction chamber, a grain suction pipe mounted on one side of the grain suction chamber, a grain suction head mounted on one end of the grain suction pipe, and a Roots blower, an air inlet pipe mounted on the air inlet of the Roots blower, an air outlet pipe mounted on the air outlet of the Roots blower, the air inlet pipe being connected to the grain suction chamber through a first connecting pipe, and a plurality of screening modules mounted on the air inlet pipe;

[0007] The screening module includes a screening chamber and a first electric valve. The first electric valve is installed on the air inlet pipe. The screening chamber is connected to the air inlet pipe through a second connecting pipe and a third connecting pipe. A second electric valve is installed on the second connecting pipe, and a third electric valve is installed on the third connecting pipe. The first electric valve is located between the second connecting pipe and the third connecting pipe. A screening cylinder is installed inside the screening chamber.

[0008] Preferably, the screening chamber has an opening at the top, and a cover is threadedly installed at the opening. A limit ring is fixedly installed inside the screening chamber, and the screening cylinder is fitted onto the limit ring. A pressure rod is fixedly installed at the lower end of the cover. An installation seat is fixedly installed inside the screening cylinder, and an insertion rod is fixedly installed on the installation seat. A slot is provided at the lower end of the pressure rod, and the insertion rod slides into the slot. A spring is fitted between the pressure rod and the installation seat, and the spring is sleeved on the insertion rod, with the spring sliding into the insertion rod.

[0009] Preferably, a fifth connecting pipe is connected to the air outlet pipe, and the screening chamber is connected to the fifth connecting pipe through a fourth connecting pipe, on which a fourth electric valve is installed.

[0010] Preferably, the second and fourth connecting pipes are located above the screening cylinder, and the third connecting pipe is located below the screening cylinder.

[0011] Preferably, an installation ring is installed below the screening chamber, and a one-way valve is installed inside the installation ring, with the one-way valve communicating from bottom to top.

[0012] Preferably, a first muffler is installed on the air intake pipe, and a second muffler is installed on the air outlet pipe.

[0013] Preferably, it also includes a base plate, on which the Roots blower is fixedly mounted.

[0014] Preferably, the grain suction bin is equipped with several grain-blocking cloth bags inside, and a pressure relief valve is installed on the grain suction bin.

[0015] Preferably, a second fixed bracket is fixedly installed on the base plate, and the second fixed bracket is fixedly engaged with the screening chamber.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. In operation, this utility model starts the Roots blower, creating negative pressure in the grain suction bin through the first connecting pipe. The grain suction head uses this negative pressure to draw in grain, which first enters the grain suction bin through the suction pipe. Subsequently, most of the grain is discharged through the rotating discharge valve. A small amount of grain moving upward under negative pressure is effectively intercepted by the grain-blocking bag. At the same time, air mixed with dust enters the air inlet pipe through the first connecting pipe and flows through several screening modules for purification. The clean air finally enters the Roots blower and is discharged through the air outlet pipe. The key to this design is that the screening chambers in the screening modules effectively filter the air before it enters the Roots blower, thereby preventing impurities from entering the blower and significantly extending the service life of the Roots blower.

[0018] 2. In operation, dust-laden gas enters the inlet pipe through the first connecting pipe. At this time, the first and fourth electric valves are closed, while the second and third electric valves are open. Under negative pressure, the dust-laden gas enters the screening chamber through the open second electric valve. Inside the chamber, the dust-laden gas flows through the screening cylinder for filtration and purification, transforming into clean gas. Subsequently, the clean gas flows back to the inlet pipe through the open third electric valve. When the screening cylinder in the screening chamber becomes clogged due to dust accumulation, the valve states switch: the first and fourth electric valves open, and the second electric valve... When the third electric valve closes, the dust-laden gas is diverted to the backup screening module for processing through the first electric valve. At the same time, the exhaust pipe continuously exhausts gas, creating negative pressure in the fifth connecting pipe. This causes the one-way valve to open, allowing external air (or clean airflow) to enter the screening chamber through the one-way valve. This backflushing airflow lifts the dust accumulated inside the cylinder, forming dust-laden gas, which is then discharged into the fifth connecting pipe through the fourth electric valve and finally exited from the system through the exhaust pipe. Through this backflushing mechanism, the dust accumulated inside the screening cylinder is effectively removed, significantly improving the equipment's continuous operating capability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the basic structure of a grain suction machine with a screening module according to the present invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the basic structure of a grain suction machine with a screening module according to the present invention. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the basic structure of a grain suction machine with a screening module according to the present invention.

[0022] Figure 4 This is a simplified structural diagram of a grain suction machine with a screening module according to the present invention.

[0023] Figure 5 The present invention relates to a grain suction machine with a screening module, and the structure of the screening module is simplified. Figure 1 .

[0024] Figure 6 The present invention relates to a grain suction machine with a screening module, and the structure of the screening module is simplified. Figure 2 .

[0025] Figure 7 This is a schematic diagram of the operation of the screening module of a grain suction machine with a screening module according to this utility model. Figure 1 .

[0026] Figure 8This is a schematic diagram of the operation of the screening module of a grain suction machine with a screening module according to this utility model. Figure 2 .

[0027] In the diagram: 101, First fixed support; 102, Grain suction bin; 1021, Grain retaining bag; 103, Rotary discharge valve; 104, Grain suction pipe; 105, Grain suction head; 106, First connecting pipe; 107, Pressure relief valve; 201, Base plate; 202, Air inlet pipe; 2021, First silencer; 203, Air outlet pipe; 2031, Second silencer; 204, Roots blower; 300, Screening module; 301, First electric valve; 302, Second connecting pipe; 302 1. Second electric valve; 303. Third connecting pipe; 3031. Third electric valve; 304. Fourth connecting pipe; 3041. Fourth electric valve; 305. Screening chamber; 3051. Cover; 3052. Pressure rod; 3053. Mounting base; 3054. Slot; 3055. Insert rod; 3056. Spring; 3057. Screening cylinder; 3058. Limiting ring; 306. Fifth connecting pipe; 307. Mounting ring; 3071. One-way valve; 308. Second fixed bracket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figure 1-6 As shown, this embodiment provides a grain suction machine with a screening module, including a first fixed support 101, a grain suction chamber 102 installed on the first fixed support 101, a rotary feeding valve 103 installed at the lower end of the grain suction chamber 102, a grain suction pipe 104 installed on one side of the grain suction chamber 102, and a grain suction head 105 installed at one end of the grain suction pipe 104.

[0030] This embodiment also includes a base plate 201, on which a Roots blower 204 is fixedly installed. An air inlet pipe 202 is installed at the air inlet of the Roots blower 204, and an air outlet pipe 203 is installed at the air outlet of the Roots blower 204. The air inlet pipe 202 is connected to the grain suction bin 102 through a first connecting pipe 106, and several screening modules 300 are installed on the air inlet pipe 202.

[0031] In this embodiment, the first connecting pipe 106 is a flexible hose, and several grain-blocking cloth bags 1021 are installed inside the grain suction chamber 102. A pressure relief valve 107 is installed on the grain suction chamber 102. The 1021 can block the grain, but will not block the dust and impurities contained in the grain, thereby facilitating the screening module 300 to screen the dust and impurities.

[0032] The screening module 300 includes a screening chamber 305 and a first electric valve 301. The first electric valve 301 is installed on the air inlet pipe 202. The screening chamber 305 is connected to the air inlet pipe 202 through a second connecting pipe 302 and a third connecting pipe 303. A second electric valve 3021 is installed on the second connecting pipe 302 and a third electric valve 3031 is installed on the third connecting pipe 303. The first electric valve 301 is located between the second connecting pipe 302 and the third connecting pipe 303. A screening cylinder 3057 is installed inside the screening chamber 305.

[0033] The screening chamber 305 has an opening at the top, and a cover 3051 is threadedly installed at the opening. A limit ring 3058 is fixedly installed inside the screening chamber 305. The screening cylinder 3057 is fitted onto the limit ring 3058. A pressure rod 3052 is fixedly installed at the lower end of the cover 3051. A mounting base 3053 is fixedly installed inside the screening cylinder 3057. An insertion rod 3055 is fixedly installed on the mounting base 3053. A slot 3054 is opened at the lower end of the pressure rod 3052. The insertion rod 3055 slides with the slot 3054. A spring 3056 is fitted between the pressure rod 3052 and the mounting base 3053. The spring 3056 is sleeved on the insertion rod 3055. The spring 3056 slides with the insertion rod 3055.

[0034] A fifth connecting pipe 306 is connected to the air outlet pipe 203. The screening chamber 305 is connected to the fifth connecting pipe 306 through a fourth connecting pipe 304. A fourth electric valve 3041 is installed on the fourth connecting pipe 304. The second connecting pipe 302 and the fourth connecting pipe 304 are located above the screening cylinder 3057, and the third connecting pipe 303 is located below the screening cylinder 3057. An installation ring 307 is installed below the screening chamber 305. A one-way valve 3071 is installed inside the installation ring 307. The one-way valve 3071 communicates from bottom to top. A second fixed bracket 308 is fixedly installed on the base plate 201. The second fixed bracket 308 is fixedly engaged with the screening chamber 305.

[0035] A first silencer 2021 is installed on the air inlet pipe 202, and a second silencer 2031 is installed on the air outlet pipe 203. The first silencer 2021 and the second silencer 2031 can effectively reduce the noise generated by the Roots blower 204. The silencers are resistive silencers, which can reduce the impact of noise on the staff.

[0036] It should be noted that, referring to Figure 4-6 In this embodiment, when the Roots blower 204 is started, a negative pressure is formed in the grain suction bin 102 through the first connecting pipe 106. The grain suction head 105 uses this negative pressure to suck up the grain. The grain first enters the grain suction bin 102 through the grain suction pipe 104. Then, most of the grain is discharged through the rotating discharge valve 103, and a small amount of grain that moves upward under the action of negative pressure is effectively intercepted by the grain blocking bag.

[0037] Meanwhile, dust-laden air enters the inlet pipe 202 through the first connecting pipe 106. At this time, the first electric valve 301 and the fourth electric valve 3041 are closed, while the second electric valve 3021 and the third electric valve 3031 are open. Under negative pressure, the dust-laden gas enters the screening chamber 305 through the open second electric valve 3021. Inside the chamber, the dust-laden gas flows through the screening cylinder 3057 for filtration and purification, transforming into clean gas. Subsequently, the clean gas flows back to the inlet pipe 202 through the open third electric valve 3031 (see reference). Figure 5 and Figure 7 ).

[0038] When the screening cylinder 3057 in the screening chamber 305 becomes clogged with dust, the valve states switch: the first electric valve 301 and the fourth electric valve 3041 open, and the second electric valve 3021 and the third electric valve 3031 close. The dust-laden gas is then diverted to the backup screening module 300 for processing through the opened first electric valve 301. At the same time, the exhaust pipe 203 continuously exhausts gas, creating a negative pressure in the fifth connecting pipe 306, which causes the one-way valve 3071 to open. External air (or clean airflow) enters the screening chamber 305 through the one-way valve 3071, backflushing the clogged screening cylinder 3057. The backflushing airflow lifts the dust inside the cylinder, forming dust-laden gas, which is discharged into the fifth connecting pipe 306 through the opened fourth electric valve 3041, and finally discharged from the system through the exhaust pipe 203 (see reference). Figure 6 and Figure 8 During this process, the screening cylinder 3057 is attracted upward by negative pressure, and the spring 3056 is compressed. At this time, the fourth electric valve 3041 can be switched cyclically, so that the spring 3056 switches between uncompressed and compressed, thereby causing the screening cylinder 3057 to vibrate and shake off the dust on the screening cylinder 3057.

[0039] The aforementioned backflushing mechanism effectively removes the accumulated dust inside the screening cylinder 3057, significantly improving the equipment's continuous operation capability.

[0040] The screening chamber 305 inside the screening module 300 effectively filters the air before it enters the Roots blower 204, thereby preventing impurities from entering the blower and significantly extending the service life of the Roots blower 204.

[0041] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grain suction machine with a screening module, comprising a first fixed support (101), a grain suction chamber (102) mounted on the first fixed support (101), a rotary discharge valve (103) mounted on the lower end of the grain suction chamber (102), a grain suction pipe (104) mounted on one side of the grain suction chamber (102), and a grain suction head (105) mounted on one end of the grain suction pipe (104), characterized in that: It also includes a Roots blower (204), the air inlet of which is fitted with an air inlet pipe (202), the air outlet of which is fitted with an air outlet pipe (203), the air inlet pipe (202) is connected to the grain suction bin (102) through a first connecting pipe (106), and several screening modules (300) are fitted on the air inlet pipe (202); The screening module (300) includes a screening chamber (305) and a first electric valve (301). The first electric valve (301) is installed on the air inlet pipe (202). The screening chamber (305) is connected to the air inlet pipe (202) through a second connecting pipe (302) and a third connecting pipe (303). A second electric valve (3021) is installed on the second connecting pipe (302), and a third electric valve (3031) is installed on the third connecting pipe (303). The first electric valve (301) is located between the second connecting pipe (302) and the third connecting pipe (303). A screening cylinder (3057) is installed inside the screening chamber (305).

2. The grain suction machine with a screening module according to claim 1, characterized in that: The screening chamber (305) has an opening at its upper end, and a cover (3051) is threadedly installed at the opening. A limit ring (3058) is fixedly installed inside the screening chamber (305), and the screening cylinder (3057) is fitted onto the limit ring (3058). A pressure rod (3052) is fixedly installed at the lower end of the cover (3051), and a mounting base (3053) is fixedly installed inside the screening cylinder (3057). 53) A plug rod (3055) is fixedly installed on the upper part. A slot (3054) is opened at the lower end of the pressure rod (3052). The plug rod (3055) and the slot (3054) are slidably engaged. A spring (3056) is installed between the pressure rod (3052) and the mounting base (3053). The spring (3056) is sleeved on the plug rod (3055). The spring (3056) and the plug rod (3055) are slidably engaged.

3. The grain suction machine with a screening module according to claim 1, characterized in that: The air outlet pipe (203) is connected to a fifth connecting pipe (306), and the screening chamber (305) is connected to the fifth connecting pipe (306) through a fourth connecting pipe (304). A fourth electric valve (3041) is installed on the fourth connecting pipe (304).

4. The grain suction machine with a screening module according to claim 3, characterized in that: The second connecting pipe (302) and the fourth connecting pipe (304) are located above the screening cylinder (3057), and the third connecting pipe (303) is located below the screening cylinder (3057).

5. A grain suction machine with a screening module according to claim 1, characterized in that: An installation ring (307) is installed below the screening chamber (305), and a one-way valve (3071) is installed inside the installation ring (307). The one-way valve (3071) is connected from bottom to top.

6. The grain suction machine having a screening module according to claim 1, characterized in that: A first muffler (2021) is installed on the air intake pipe (202), and a second muffler (2031) is installed on the air outlet pipe (203).

7. The grain suction machine having a screening module according to claim 1, characterized in that: It also includes a base plate (201), on which the Roots blower (204) is fixedly mounted.

8. The grain suction machine having a screening module according to claim 1, characterized in that: The grain suction bin (102) is equipped with several grain-blocking cloth bags (1021), and a pressure relief valve (107) is installed on the grain suction bin (102).

9. The grain suction machine having a screening module according to claim 7, characterized in that: A second fixed bracket (308) is fixedly installed on the base plate (201), and the second fixed bracket (308) is fixedly engaged with the screening chamber (305).

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