Injection valve and electric control ejector

Abstract

The injection valve comprises a movable iron core (7) driven by a coil assembly (9), and is characterized in that the movable iron core (7) and a static iron core assembly (8) are respectively provided with a movable iron core second circulation channel (7-2) and a static iron core circulation channel (8-3) which are communicated with each other along the axial direction of the movable iron core (7) and the static iron core assembly (8); a movable iron core first circulation channel (7-1) is obliquely arranged at the end, located in the valve seat (4), of the movable iron core (7), the movable iron core first circulation channel (7-1) is communicated with the movable iron core second circulation channel (7-2), and a sealing plug (17) at the end of the movable iron core (7) blocks the valve seat (4). According to the injection valve and the electric control injector, automatic control and accurate adjustment are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of injection valve and the electrically-controlled injector assembly formed by applying the injection valve, belong to valve technical field. BACKGROUND

[0002] With the rapid advancement of China's agricultural modernization construction, the rate of agricultural mechanization is higher and higher, and it is more necessary to create and use new agricultural equipment to promote the quality of agriculture and increase efficiency. Traditional agricultural machinery mainly relies on manual work cannot meet the requirements of modern agricultural production. Agricultural science and technology and equipment technology, intelligentization and automation technology develop rapidly, and agricultural technology is developing towards high integration, precision, automation, intelligence and networking. Using agricultural unmanned aerial vehicle to spray pesticide on large area farmland, agricultural tractor to automatically apply pesticide to farmland, and intelligent farmland to automatically control the amount of pesticide injection according to environmental changes.

[0003] The traditional mechanical injection device uses manual adjustment mode, fixes a certain opening, and the amount of pesticide cannot be adjusted in time, the injection amount cannot be adjusted according to the environment, the land is seriously polluted, the waste is large, and remote automatic control cannot be realized, which cannot meet the development of modern agricultural intelligence. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the above-mentioned shortcomings, and provides an injection valve and an electrically-controlled injector which can be automatically controlled and precisely adjusted.

[0005] The utility model aims at overcoming the above-mentioned shortcomings, and provides an injection valve and an electrically-controlled injector which can be automatically controlled and precisely adjusted.

[0006] An injection valve, the injection valve includes a moving iron core driven by a coil assembly, the moving iron core and the static iron core assembly are respectively provided with a moving iron core second flow passage and a static iron core flow passage which are communicated with each other along the axial direction thereof, a moving iron core first flow passage is obliquely arranged on one end of the moving iron core in the valve seat, and the moving iron core first flow passage is communicated with the moving iron core second flow passage.

[0007] Preferably, the static iron core assembly is connected by a static iron core body and a magnetic isolation sleeve, the moving iron core is slidingly arranged in the magnetic isolation sleeve, and the static iron core flow passage is arranged in the axial direction of the static iron core body.

[0008] Preferably, the moving iron core is a hexagonal structure.

[0009] An electrically-controlled injector, the electrically-controlled injector contains the above-mentioned injection valve, the valve seat at one end of the injection valve is installed on an adapter, the other end is embedded with a nozzle through a nozzle cap, and the static iron core flow passage is communicated with the nozzle.

[0010] Preferably, a screw sleeve is arranged on the static iron core assembly, and the nozzle cap is installed on the screw sleeve through a screw slot.

[0011] Preferably, a filter screen is installed in the adapter.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a electromagnetic control mode can remote accurate control of the opening and closing of the injection valve.Simultaneously, the utility model constructs the flow channel in the interior through the hollow flow channel and the oblique flow channel of static core shaft center and moving core shaft center realizes the flow of fluid in the interior, realizes the miniaturization design.And moving core adopts hexagonal structure, increases the flow passage, reduces the pressure damping, improves the response speed.Finally, the nozzle cap and the screw sleeve adopt the spiral clamping groove connection and fix the nozzle, thereby facilitating the disassembly and replacement of the nozzle of different structural forms. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an assembly structure schematic view of the utility model of an electric control injector.

[0015] Figure 2 It is a structure schematic view of the utility model static core assembly.

[0016] Figure 3 It is a structure schematic view of the utility model moving core.

[0017] Figure 4 It is the structure diagram of the utility model injector opening state.

[0018] Among them:

[0019] The first sealing ring 1, the adapter 2, the second sealing ring 3, the valve seat 4, the third sealing ring 5, the spring 6, the moving core 7, the static core assembly 8, the coil assembly 9, the shell 10, the fourth sealing ring 11, the screw sleeve 12, the gasket 13, the nozzle cap 14, the nozzle 15, the filter screen 16, the sealing plug 17;

[0020] The static core body 8-1, the magnetic isolation sleeve 8-2, the static core flow passage 8-3;

[0021] The moving core first flow passage 7-1, the moving core second flow passage 7-2, the moving core third flow passage 7-3, the moving core fourth flow passage 7-4;

[0022] The nozzle flow passage 15-1;

[0023] The valve seat flow passage 17-1. DETAILED DESCRIPTION

[0024] See Figures 1-4The utility model discloses an electric control sprayer, which is based on a spray valve, and the spray valve comprises a coil assembly 9 installed in a shell 10, a static core assembly 8 comprising a static core body 8-1 and a magnetic isolation sleeve 8-2 welded on the static core body 8-1, and the static core body 8-1 is inserted into the magnetic isolation sleeve 8-2 at one end and connected by laser welding at the inner connection interface, a limiting protruding ring is arranged on the end wall of the end of the magnetic isolation sleeve 8-2 away from the static core body 8-1, a static core flow-through channel 8-3 is arranged in the center of the static core body 8-1 along the axial direction, the static core body 8-1 is inserted into the center hole of the coil assembly 9 from one end of the shell 10 and extends out of the other end of the shell 10, and a threaded sleeve 12 is arranged on the extending end of the static core assembly 8, so that the static core assembly 8 and the coil assembly 9 are assembled by welding and then firmly installed in the shell 10 through the cooperation between the threaded sleeve 12 and the limiting protruding ring.

[0025] The dynamic core 7 is slidingly inserted into the magnetic isolation sleeve 8-2, the head of the dynamic core 7 away from the static core body 8-1 is a conical structure, a through dynamic core second flow-through channel 7-2 is arranged in the center of the dynamic core 7 along the axial direction, a sealing plug 17 is embedded in the front end of the dynamic core 7 to block the front end opening of the dynamic core second flow-through channel 7-2, a dynamic core first flow-through channel 7-1 is arranged on the outer wall of the conical head of the dynamic core 7, and the dynamic core first flow-through channel 7-1 is connected to the dynamic core second flow-through channel 7-2. Preferably, the dynamic core 7 adopts a hexagonal structure to increase the flow-through channel, reduce the pressure damping and improve the response speed.

[0026] Meanwhile, the magnetic isolation sleeve 8-2 is fixedly installed on the valve seat 4 in a threaded cooperation mode, an interference fit mode or a welding connection mode, a liquid inlet valve hole is arranged in the center of the valve seat 4 along the axial direction, the valve cavity of the valve seat 4 is connected to the magnetic isolation sleeve 8-2, the valve cavity is connected to the liquid inlet valve hole, the valve cavity is also connected to the dynamic core first flow-through channel 7-1, the spring 6 of the conical structure is sleeved on the conical head of the dynamic core 7, a spring seat is formed on the end wall of the end of the conical head to limit the spring 6, and the other end of the spring 6 abuts against the stepped surface of the inner wall of the magnetic isolation sleeve 8-2.

[0027] The electric control sprayer is based on the above-mentioned spray valve, and a nozzle cap 14 is installed on the end of the static core assembly 8 extending out of the shell 10, the nozzle cap 14 is installed on the threaded sleeve 12 in a spiral clamping groove mode (so that different types of nozzles 15 can be conveniently replaced), a gasket 13 of an annular structure is compressed between the end faces of the nozzle cap 14 and the threaded sleeve 12, and the nozzle 15 is embedded in the nozzle cap 14, so that the liquid sprayed through the opening end of the static core flow-through channel 8-3 is sprayed to the surrounding through the nozzle 15.

[0028] For the convenience of installation, the valve seat 4 is installed on an adapter 2, so that the adapter 2 can be conveniently installed on a mounting seat at a required installation position.

[0029] Referring to Figure 4 The working principle of the electric control injector is as follows: the electromagnet assembly of the shell 10, the coil assembly 9, the static iron core assembly 8 and the moving iron core 7 is in a normally closed state, and when the power is lost, the moving iron core 7 is pressed against the liquid inlet valve hole of the valve seat 4 by the elastic force of the spring 6, so that the sealing plug 17 embedded in the end of the moving iron core 7 is pressed and closed, and at the same time;

[0030] When the spraying operation is needed, the coil assembly 9 is powered to attract the moving iron core 7, and the moving iron core 7 will move to the right against the elastic force of the spring 6, at this time the sealing plug 17 embedded in the head of the moving iron core 7 is separated from the valve seat, at this time the liquid is introduced into the valve cavity of the valve seat 4 through the valve seat flow passage 17-1 between the valve seat 4 and the sealing plug 17, and then through the moving iron core first flow passage 7-1 and the moving iron core second flow passage 7-2, and then through the static iron core flow passage 8-3, and then sprayed through the nozzle 15. At the same time, the third flow passage 7-3 between the moving iron core 7 and the magnetic isolation sleeve 8-2, and the fourth flow passage 7-4 between the moving iron core 7 and the static iron core body 8-1 constitute a pressure relief flow channel, which ensures the rapid response of the electromagnetic.

[0031] In addition: It should be noted that the above specific embodiment is only one optimization scheme of the patent, and any change or improvement made by the person skilled in the art according to the above concept is within the protection scope of the patent.

Claims

1. An injection valve comprising a moving iron core (7) driven by a coil assembly (9), characterized in that: The moving iron core (7) and the static iron core assembly (8) are respectively provided with the moving iron core second flow channel (7-2) and the static iron core flow channel (8-3) which are communicated with each other along the axial direction, the moving iron core first flow channel (7-1) is obliquely arranged on one end of the moving iron core (7) in the valve seat (4), and the moving iron core first flow channel (7-1) is communicated with the moving iron core second flow channel (7-2).

2. The injection valve of claim 1, wherein: The static iron core assembly (8) is connected by the static iron core body (8-1) and the magnetic isolation sleeve (8-2), the moving iron core (7) is slidably arranged in the magnetic isolation sleeve (8-2), and the static iron core flow channel (8-3) is arranged in the axial direction of the static iron core body (8-1).

3. The injection valve of claim 1, wherein: The moving iron core is a hexagonal structure.

4. An electronically controlled injector characterized by: Based on the injection valve of claim 1, the valve seat (4) at one end of the injection valve is mounted on the adapter (2), and the other end is embedded with the nozzle (15) through the nozzle cap (14).

5. An electronically controlled injector according to claim 4, characterised in that: The static iron core assembly (8) is provided with a screw sleeve (12), and the nozzle cap (14) is mounted on the screw sleeve (12) through a screw slot.

6. An electronically controlled injector according to claim 4, characterized in that: The adapter (2) is provided with a filter screen (16).

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