High-precision regulating electromagnetic control valve

Abstract

The application discloses a high-precision adjusting type electromagnetic control valve and relates to the technical field of electromagnetic valves. The valve body is internally provided with a valve rod, the upper end of the valve body is provided with a fixedly arranged nut, the outer wall of the valve body is provided with a knob, the knob is linked with the nut, one end of the valve body is fixedly connected with a connecting ring, the surface of the side, away from the valve body, of the connecting ring is fixedly connected with a flow pipe, and the end, away from the connecting ring, of the flow pipe is fixedly connected with an air inlet pipe. The spiral scraper is driven by airflow to rotate in the circumferential direction, the inner wall of the air inlet pipe is scraped and cleaned in real time during the conveying process, dust is effectively prevented from continuously adhering, accumulating and hardening and caking at the pipe wall position to a certain extent, the air inlet pipe flow channel is prevented from being blocked, meanwhile, the spiral flow airflow formed when the spiral scraper rotates can directly wrap and entrain the scraped dust into the main airflow and discharge the dust with the airflow, and the regulation precision and control stability of the gas flow capacity are improved to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of solenoid valve technology, specifically to a high-precision regulating solenoid control valve. Background Technology

[0002] A solenoid valve is an automated actuator that uses electromagnetic force to drive the valve core to achieve the on / off, direction switching, or flow regulation of fluids (liquids, gases, steam, etc.). It is widely used in industrial automation, hydraulics and pneumatics, water treatment, HVAC and other fields. Regulating solenoid valves are widely applicable to the precise regulation and control of the flow of various gases such as compressed air, oxygen, and nitrogen.

[0003] High-precision regulating solenoid valves refer to regulating solenoid valves that have extremely small deviations between the actual output flow and the set flow during gas flow control. They have high adjustment resolution, repeatability, and steady-state control accuracy, enabling precise, stable, and reliable regulation of gas flow.

[0004] In existing technologies, when electromagnetic control valves are used for long-term airflow transport, some gases contain fine dust. When this fine dust mixed in with the transported airflow flows through the valve body, it adheres to the inner wall of the inlet pipe and accumulates over time. After prolonged operation, the dust gradually hardens and clumps, which not only directly blocks the inlet air passage and reduces the effective flow area, but also causes a continuous decrease in gas flow and unstable airflow, thus affecting the valve's normal gas supply effect and transport reliability, reducing transport efficiency. At the same time, when the flow is adjusted by the valve stem, it obstructs and disturbs the internal airflow, easily causing local airflow turbulence inside the valve body. This creates a dust trap in the connection area between the valve stem and the inlet end of the valve body, where dust cannot be discharged on its own. The dust accumulated in this area cannot be discharged with the mainstream airflow, and after continuous accumulation, it can easily cause the valve stem to become stuck, directly reducing the adjustment accuracy and control stability of the gas flow. This may increase the equipment failure rate and the frequency of subsequent maintenance, making it inconvenient to use. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a high-precision adjustable electromagnetic control valve to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision adjustable electromagnetic control valve, comprising a valve body, a valve stem provided on the inner wall of the valve body, a fixedly installed nut mounted on the upper end of the valve body, a knob mounted on the outer wall of the valve body, and the knob being linked with the nut, a connecting ring fixedly connected to one end of the valve body, a flow pipe fixedly connected to the side surface of the connecting ring away from the valve body, an air inlet pipe fixedly connected to the end of the flow pipe away from the connecting ring, the air inlet pipe, the flow pipe, and the connecting ring being interconnected, and a cleaning component for scraping dust provided on the inner wall of the air inlet pipe.

[0007] Preferably, the cleaning component includes a spiral scraper connected by a rotating ring, the inner wall of the air intake pipe has a channel for the spiral scraper to move, and the outer wall of the spiral scraper is in contact with the inner wall of the air intake pipe.

[0008] Preferably, an adjusting ring is rotatably connected to the inner wall of the connecting ring, and an insert rod is connected to the center of the adjusting ring via a connecting rod. A baffle is connected to the center of one end of the rotating ring via a fixed rod, and a sleeve is fixedly connected to one side surface of the baffle.

[0009] Preferably, the end of the insert rod away from the adjusting ring is inserted into the inner wall of the sleeve, the inner wall of the sleeve is provided with a spiral groove, and one end of the insert rod is fixedly connected to a locking block that engages with the spiral groove.

[0010] Preferably, two sets of limiting rods are symmetrically fixedly connected to the inner wall of the air intake pipe near the flow pipe end, and the rotating ring is slidably connected to the outer wall of the limiting rods. A spring is fixedly connected to the outer wall of the spiral scraper, and the spring is sleeved on the outer wall of the limiting rod.

[0011] Preferably, the surface of the intake pipe away from the flow pipe has two sets of diversion grooves symmetrically formed, one end of each diversion groove is connected to a guide groove, the guide groove passes through the flow pipe, and the surface of the connecting ring has two sets of slots symmetrically formed, the guide groove is connected to the slots.

[0012] Preferably, the surface of the adjusting ring has a first opening and a second opening arranged in a cross shape, and the first opening and the second opening can be aligned with the slot after rotation.

[0013] Preferably, a cavity is provided at the center of the flow tube, and the cavity inside the flow tube is tapered.

[0014] In summary, the present invention has the following main beneficial effects: 1. When the present invention conveys airflow through the valve body, the spiral scraper is driven by the airflow to rotate circumferentially, thereby enabling real-time online scraping and dust removal of the inner wall of the inlet pipe during the conveying process. This can effectively prevent dust from continuously adhering, accumulating, and hardening on the pipe wall, reducing the problem of blockage in the inlet pipe flow channel, ensuring that the cross-sectional area of ​​the inlet pipe remains constant, and improving the problems of flow rate attenuation and conveying fluctuation caused by dust accumulation and diameter reduction, ensuring continuous and stable airflow delivery. At the same time, the swirling airflow formed by the spiral scraper during rotation can directly carry the scraped dust to the mainstream airflow and discharge it outward, preventing hard dust particles from falling off and entering the key mating parts inside the valve, reducing the risk of dust scratching and jamming of the valve stem and sealing structure. With the airflow diversion layout of the diversion groove and guide groove, the dust dead corner formed near the valve stem can be directionally blown, which can alleviate the airflow turbulence caused by valve stem obstruction to a certain extent. While achieving dust removal and anti-blockage, it also makes the valve stem adjustment action smooth, improving the adjustment accuracy and control stability of gas flow. 2. This invention achieves axial translation of the rotating ring by changing the pressure of the conveying airflow. When the rotating ring moves, the spiral groove and the locking block on the sleeve and the insert rod work together to drive the adjusting ring to rotate, thereby switching between the first opening and the second opening. This facilitates adaptive adjustment of the flow rate and jet intensity of the blowing airflow in the guide groove according to the gas flow rate, ensuring the dust removal effect in the dead corner area under different conveying conditions. The upper and lower guide grooves can respectively achieve directional blowing of dead corners and stabilization of the main airflow, which can not only prevent dust from accumulating in the dead corners around the valve stem, but also optimize the flow field distribution inside the valve body, further reducing the probability of valve stem jamming and poor movement. It is easy to adaptively adjust according to the airflow state, improving the adaptability and flexibility of the overall structure. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a first-view perspective three-dimensional schematic diagram of part of the structure of the present invention; Figure 3 This is a second-view perspective three-dimensional schematic diagram of part of the structure of the present invention; Figure 4 This is a first-view schematic diagram of a portion of the cleaning component structure of the present invention; Figure 5 This is a second-view schematic diagram of a portion of the cleaning component structure of the present invention; Figure 6 This is an exploded structural diagram of the adjusting ring and connecting ring of the present invention; Figure 7 This is a cross-sectional view of part of the structure of the present invention; Figure 8 This is a side view of part of the structure of the present invention.

[0016] In the diagram: 1. Valve body; 2. Inlet pipe; 21. Diverter groove; 22. Guide groove; 3. Flow pipe; 4. Connecting ring; 41. Slot; 51. Spiral scraper; 52. Baffle; 53. Sleeve; 54. Limiting rod; 55. Adjusting ring; 551. First opening; 552. Second opening; 56. Insert rod. Detailed Implementation

[0017] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0018] A high-precision regulating electromagnetic control valve, such as Figures 1-8 As shown, the valve includes a valve body 1, a valve stem on the inner wall of the valve body 1, a fixed nut on the upper end of the valve body 1, and a knob on the outer wall of the valve body 1. The knob is linked with the nut. By rotating the knob and cooperating with the nut, the valve stem can be driven to move up and down to adjust the flow rate inside the valve body 1. A connecting ring 4 is fixedly connected to one end of the valve body 1. A flow pipe 3 is fixedly connected to the surface of the connecting ring 4 away from the valve body 1. An air inlet pipe 2 is fixedly connected to the end of the flow pipe 3 away from the connecting ring 4. The air inlet pipe 2, the flow pipe 3, and the connecting ring 4 are connected. A cleaning component for scraping dust is provided on the inner wall of the air inlet pipe 2.

[0019] See Figure 2 , Figure 4 , Figure 5 , Figure 7 It is known that the cleaning component includes a spiral scraper 51 connected by a rotating ring. The inner wall of the air intake pipe 2 has a channel for the spiral scraper 51 to move. The outer wall of the spiral scraper 51 is in contact with the inner wall of the air intake pipe 2. When the valve body 1 delivers airflow, the airflow will drive the spiral scraper 51 to rotate. When the spiral scraper 51 makes a circular motion, it can scrape off the dust on the inner wall of the air intake pipe 2. At the same time, when the spiral scraper 51 rotates, it will form a swirling airflow, which will facilitate the entrainment of the scraped dust into the mainstream airflow, prevent the air intake pipe 2 from being blocked, ensure that the flow cross-sectional area of ​​the air intake pipe 2 is constant, and make the airflow delivery stable.

[0020] See Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 It can be seen that an adjusting ring 55 is rotatably connected to the inner wall of the connecting ring 4. A plug rod 56 is connected to the center of the adjusting ring 55 via a connecting rod. A baffle 52 is connected to the center of one end of the rotating ring via a fixed rod. A sleeve 53 is fixedly connected to one side surface of the baffle 52. When the valve body 1 delivers airflow, if the airflow pressure is large, the baffle 52 can push the spiral scraper 51 to move as a whole, thereby synchronously driving the sleeve 53 to move. The end of the insert rod 56 away from the adjusting ring 55 is inserted into the inner wall of the sleeve 53. The inner wall of the sleeve 53 is provided with a spiral groove. One end of the insert rod 56 is fixedly connected to a locking block that meshes with the spiral groove. When the sleeve 53 moves synchronously with the spiral scraper 51, the adjusting ring 55 can be rotated through the mutual cooperation of the spiral groove and the locking block. The surface of the adjusting ring 55 has a first opening 551 and a second opening 552 arranged in a cross shape. After the first opening 551 and the second opening 552 are rotated, they can be aligned with the slot 41 respectively. The diameter of the first opening 551 is smaller than the diameter of the second opening 552. When the airflow pressure is high, the first opening 551 is aligned with the slot 41 after the adjusting ring 55 is rotated. Conversely, when the airflow pressure is low, the adjusting ring 55 is reset, and the second opening 552 is aligned with the slot 41. Thus, the flow rate of the air conveyed in the guide groove 22 can be adaptively adjusted according to the airflow rate, thereby improving the dust removal effect in the dust-trapping dead zone area. Two sets of limiting rods 54 are symmetrically fixed to the inner wall of the intake pipe 2 near the flow pipe 3, and the rotating ring is slidably connected to the outer wall of the limiting rod 54. A spring is fixedly connected to the outer wall of the spiral scraper 51, and the spring is sleeved on the outer wall of the limiting rod 54. The limiting rod 54 can limit the spiral scraper 51, so that the spiral scraper 51 can move in parallel while rotating. By setting the spring, the elastic force of the spring can drive the rotating ring and the spiral scraper 51 to reset.

[0021] See Figure 2 , Figure 6 , Figure 7 , Figure 8 It is known that two sets of diversion grooves 21 are symmetrically opened on the side of the intake pipe 2 away from the flow pipe 3. By setting the diversion grooves 21, the airflow entering the intake pipe 2 can be diverted. One end of the diversion groove 21 is connected to the guide groove 22, which passes through the flow pipe 3. Two sets of slots 41 are symmetrically opened on the surface of the connecting ring 4. The guide groove 22 is connected to the slot 41. After the diverted gas enters the guide groove 22 through the diversion groove 21, the airflow can be guided by the guide groove 22. Furthermore, since the two sets of guide grooves 22 are arranged vertically, the upper guide groove 22 can blow some gas to the dead corner to avoid dust accumulation in the area. The lower guide groove 22 can cooperate with the main road to deliver airflow, assist the airflow to flow smoothly, and alleviate the airflow turbulence problem caused by valve stem obstruction.

[0022] See Figure 8 It can be seen that a cavity is provided at the center of the flow tube 3, and the cavity inside the flow tube 3 is cone-shaped. Through the cone-shaped cavity, the airflow rate can be increased to a certain extent under the Venturi principle.

[0023] The working principle of this invention is as follows: During the operation of the valve body 1, since the outer wall of the valve stem is provided with external threads, the upper end of the valve body 1 is equipped with a fixed nut, and the outer wall of the valve body 1 is equipped with a knob, and the knob is linked with the nut. By rotating the knob, the valve stem can be driven to move linearly up and down in the axial direction under the principle of thread meshing transmission, thereby realizing the adjustment and control of the gas flow rate inside the valve body 1. When the valve body 1 is in operation, the airflow flows inside the valve body 1 to complete the gas delivery operation. When the gas passes through the inlet pipe 2, under the action of the airflow driving force, the spiral scraper 51 rotates around the axis of the inlet pipe 2. Since the outer wall of the spiral scraper 51 is in contact with the inner wall of the inlet pipe 2, when the spiral scraper 51 rotates, it can scrape and clean the inner wall of the inlet pipe 2. When the spiral scraper 51 rotates, it will form a swirling airflow in the air inlet of the inlet pipe 2, which will carry the scraped dust into the mainstream airflow and discharge it from the outlet of the valve body 1. This achieves real-time scraping of the dust attached to the inner wall of the inlet pipe 2, prevents the dust from accumulating and hardening for a long time, causing blockage of the flow channel of the inlet pipe 2, and ensures that the flow cross-sectional area of ​​the inlet pipe 2 is constant, so that the airflow delivery is stable. After the airflow enters the air intake pipe 2, part of the airflow flows into the guide groove 22 through the diversion groove 21. When the airflow is transported, the valve stem forms an obstruction and control on the airflow through the lifting and lowering action, thereby achieving the adjustment of the airflow velocity. When the valve stem obstructs the airflow, the airflow entering the valve body 1 will be affected by the obstruction of the valve stem, which can easily cause local airflow turbulence. At this time, some dust may adhere to the dust dead corner area between the valve stem and the air intake end of the valve body 1. Since the two sets of guide grooves 22 are arranged vertically, the upper guide groove 22 can blow some gas to the dead corner to avoid dust accumulation in the area. The lower guide groove 22 can cooperate with the main road to transport airflow, assist the airflow to flow smoothly, and alleviate the airflow turbulence problem caused by the valve stem obstruction. When airflow is being transported, if the flow rate of the transported airflow increases, the airflow pressure on the baffle 52 will also increase. Under the action of the airflow pressure, the baffle 52 will be displaced. Through the setting of the limiting rod 54, the baffle 52 can be driven to make axial translational movement on the inner wall of the air inlet pipe 2 by the rotating ring. At this time, the spring is compressed, and the baffle 52 moves towards the flow pipe 3. When the baffle 52 moves, it simultaneously drives the sleeve 53 to make axial translational movement. Since the insert rod 56 is slidably connected to the inner wall of the sleeve 53, when the sleeve 53 moves, the insert rod 56 will be driven to rotate by the cooperation of the locking block on the outer wall of the insert rod 56 and the spiral groove opened on the inner wall of the sleeve 53. When the insertion rod 56 rotates, it synchronously drives the adjusting ring 55 to rotate on the inner wall of the connecting ring 4. At this time, the first opening 551 on the adjusting ring 55 is aligned with the slot 41 on the connecting ring 4, which improves the blowing jet effect. Conversely, when the airflow velocity is small, the spiral scraper 51 is reset under the spring reset force. At this time, the adjusting ring 55 rotates in the opposite direction, so that the second opening 552 is aligned with the slot 41. Thus, the flow rate of the airflow conveyed in the guide groove 22 can be adaptively adjusted according to the airflow rate, which improves the dust removal effect in the dust dead corner area. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-precision adjustable electromagnetic control valve, comprising a valve body (1), wherein a valve stem is provided on the inner wall of the valve body (1), a nut is fixedly mounted on the upper end of the valve body (1), and a knob is mounted on the outer wall of the valve body (1), and the knob is linked with the nut, characterized in that: One end of the valve body (1) is fixedly connected to a connecting ring (4), and a flow pipe (3) is fixedly connected to the side surface of the connecting ring (4) away from the valve body (1). An air inlet pipe (2) is fixedly connected to the end of the flow pipe (3) away from the connecting ring (4). The air inlet pipe (2), the flow pipe (3), and the connecting ring (4) are connected together. The inner wall of the air inlet pipe (2) is provided with a cleaning component for scraping off dust.

2. The high-precision regulating electromagnetic control valve according to claim 1, characterized in that: The cleaning assembly includes a spiral scraper (51) rotatably connected by a rotating ring. The inner wall of the air inlet pipe (2) has a channel for the spiral scraper (51) to move. The outer wall of the spiral scraper (51) is in contact with the inner wall of the air inlet pipe (2).

3. The high-precision adjustable electromagnetic control valve according to claim 2, characterized in that: The inner wall of the connecting ring (4) is rotatably connected to an adjusting ring (55). The center of the adjusting ring (55) is connected to a plug rod (56) via a connecting rod. The center of one end of the ring is connected to a baffle (52) via a fixed rod. A sleeve (53) is fixedly connected to one side surface of the baffle (52).

4. A high-precision adjustable electromagnetic control valve according to claim 3, characterized in that: The end of the insert rod (56) away from the adjusting ring (55) is inserted into the inner wall of the sleeve (53). The inner wall of the sleeve (53) is provided with a spiral groove. One end of the insert rod (56) is fixedly connected to a locking block that engages with the spiral groove.

5. A high-precision adjustable electromagnetic control valve according to claim 3, characterized in that: Two sets of limiting rods (54) are symmetrically fixedly connected to the inner wall of the air intake pipe (2) near the flow pipe (3), and the rotating ring is slidably connected to the outer wall of the limiting rod (54). A spring is fixedly connected to the outer wall of the spiral scraper (51), and the spring is sleeved on the outer wall of the limiting rod (54).

6. A high-precision adjustable electromagnetic control valve according to claim 1, characterized in that: The intake pipe (2) has two sets of diversion grooves (21) symmetrically opened on the side surface away from the flow pipe (3). One end of the diversion groove (21) is connected to a guide groove (22). The guide groove (22) penetrates the flow pipe (3). The connecting ring (4) has two sets of slots (41) symmetrically opened on its surface. The guide groove (22) is connected to the slot (41).

7. A high-precision adjustable electromagnetic control valve according to claim 4, characterized in that: The surface of the adjusting ring (55) has a first opening (551) and a second opening (552) arranged in a cross shape. After the first opening (551) and the second opening (552) are rotated, they can be aligned with the slot (41) respectively.

8. A high-precision adjustable electromagnetic control valve according to claim 6, characterized in that: The flow tube (3) has a cavity at its center, and the cavity inside the flow tube (3) is cone-shaped.

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