Cut-off type two-position three-way manual valve

Abstract

The cut-off type two-position three-way manual valve comprises a valve body, a valve element, a valve head and a sealing head, the side wall of the valve element is provided with an air inlet, a working port and an exhaust port, a flow channel is formed in the valve body, a valve port is formed in the flow channel, one side of the sealing head abuts against the valve port, and the other side of the sealing head abuts against the valve port. The valve element is inserted into the valve head in a sliding mode, an exhaust channel is formed in the valve element, a first spring is arranged in the flow channel and drives the sealing head to seal the valve port, the sealing head comprises a sealing piece and a spring seat, the sealing piece is attached to the valve port, and the spring seat is arranged on the sealing piece. A plurality of ventilation openings are evenly formed in the circumferential side of the sealing piece in the circumferential direction, one end of the spring seat is arranged on the side wall of the sealing piece, and one end of the first spring is arranged on the circumferential side of the spring seat in a sleeving mode and abuts against the side wall of the sealing piece. The method has the effect of improving the reaction efficiency of the actuator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of manual valve, in particular to a stop type two-position three-way manual valve. BACKGROUND

[0002] Two-position three-way valve generally has three fluid conveying ports, two of which are working positions, by changing the position of the valve core, the three fluid conveying ports change the communication relationship, to achieve different fluid control purposes; the existing two-position three-way solenoid valve is widely used, because the valve body structure is relatively complex, and the cost is high, it is not suitable for low-cost fluid control system, thereby providing a two-position three-way manual valve (also called two-position three-way mechanical valve), for example, the patent name is two-position three-way mechanical valve (application number CN201220420565.1), under the driving of external force, the valve core moves to the maximum stroke in the valve body, the nozzle of the valve core penetrates the spacer ring into the inlet of the valve to open the sealing ring, at this time, the inlet is communicated with the valve core, and the valve core is communicated with the channel, so that the inlet is communicated with the work, and the airflow flows through the gap between the sealing ring and the flow passage, however, the gap between the sealing ring and the flow passage is narrow, so that the flow amount of the airflow is small, thereby affecting the reaction efficiency of the actuator connected with the valve. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses to the defects and insufficiency of prior art, provide a stop type two-position three-way manual valve.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Including valve body, valve core, valve head and sealing head, the lateral wall of valve core has inlet, working port and exhaust port respectively, the flow passage is seted up in the valve body, both ends of flow passage are communicated with inlet and working port respectively, the valve port is arranged in the flow passage, one side of sealing head abuts on valve port, the valve head is inserted and fixed in the lateral wall of valve body, the valve core is inserted and slides in the valve head, the inner end of valve core is inserted in the flow passage, the exhaust passage is seted up in the valve core, one end of exhaust passage is out of the inner end of valve core, the other end of exhaust passage is communicated with exhaust port, the inner end of valve core abuts on the lateral wall of sealing head, the first spring is arranged in the flow passage, the first spring drives sealing head to close valve port, the sealing head includes sealing sheet and spring seat, the sealing sheet is attached to valve port, a plurality of ventilation openings are evenly seted up in the circumferential side of sealing sheet, one end of spring seat is arranged in the lateral wall of sealing sheet, one end of first spring is sleeved in the circumferential side of spring seat and abuts on the lateral wall of sealing sheet.

[0006] Preferably, the valve port is provided with a ring block in the circumferential direction near the one end of the sealing head, and the side wall of the sealing sheet is provided with a ring groove matched with the ring block.

[0007] Preferably, the middle part of the sealing sheet is provided with a boss which is inserted into the valve port.

[0008] Preferably, the periphery of the spring seat is provided with a locking block, and one end of the first spring is clamped on the locking block.

[0009] Preferably, a Y-shaped ring is arranged in the valve body, and the valve core is inserted and slides in the Y-shaped ring.

[0010] Preferably, the valve body is provided with a second spring, and the second spring drives the valve core away from the sealing head.

[0011] Preferably, one side of the Y-shaped ring is provided with a copper pad, one end of the second spring abuts against the side wall of the copper pad, and the other end of the second spring abuts against the side wall of the valve core.

[0012] In summary, the beneficial technical effects of the present application are as follows:

[0013] After the valve core is extruded, the inner end of the valve core pushes the sealing sheet, so that the sealing sheet and the valve port are away from each other, then the airflow flows from the air inlet, and then the airflow passes through the plurality of ventilation openings and flows through the valve port from the working port. Under the communication of the plurality of ventilation openings, the flow amount between the sealing sheet and the flow channel can be increased, and the reaction efficiency of the actuator is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a sectional view of the manual valve of the present application;

[0015] Figure 2 is Figure 1 is an enlarged view of A in FIG. 4;

[0016] Figure 3 is a structural schematic view of the sealing head of the present application.

[0017] In the drawings: 1, valve body; 2, valve core; 3, valve head; 4, sealing head; 5, driving handle; 6, flow channel; 7, valve port; 8, air inlet; 9, working port; 10, exhaust port; 11, mounting port; 12, top rod; 13, driving rod; 14, exhaust channel; 15, through hole; 16, Y-shaped ring; 17, copper pad; 18, second spring; 19, sealing sheet; 20, spring seat; 21, boss; 22, ring groove; 23, ring block; 24, ventilation opening; 25, base; 26, first spring; 27, locking block. DETAILED DESCRIPTION

[0018] The utility model discloses make further illustration to the utility model below combining the drawing.

[0019] The application discloses a cut-off type two-position three-way manual valve.

[0020] Referring to Figure 1 And Figure 2 , the valve body 1 is provided with a flow channel 6, the middle part of the flow channel 6 is provided with a valve port 7, one side of the valve body 1 is provided with an air inlet 8 and a working port 9 respectively, the other side of the valve body 1 is provided with an exhaust port 10, the air inlet 8 and the working port 9 are communicated with the two ends of the flow channel 6 respectively, the air inlet 8 is located below the working port 9, the upper end of the valve body 1 is provided with a mounting port 11, the lower end of the mounting port 11 is communicated with the upper end of the flow channel 6, one end of the valve head 3 is inserted and fixed in the upper end of the mounting port 11, the valve core 2 slides in the valve head 3, the valve core 2 comprises a top rod 12 and a driving rod 13, the vertical section of the top rod 12 is in the shape of "T", the lower end of the driving rod 13 is integrally connected with the upper end of the top rod 12, the sealing head 4 is located on the lower side wall of the valve port 7, the lower end of the top rod 12 is located above the sealing head 4, one end of the driving handle 5 is rotatably connected with the upper end of the valve body 1, the side wall of the driving handle 5 abuts against the upper end of the driving rod 13, the lower end of the top rod 12 is provided with an exhaust channel 14, the inner end side wall of the exhaust channel 14 is provided with a through hole 15, the exhaust channel 14 is communicated with the exhaust port 10 through the through hole 15 and the mounting port 11.

[0021] The Y-shaped ring 16 is clamped and fixed on the circumferential side of the mounting port 11, the copper pad 17 is fixedly attached to the upper end face of the Y-shaped ring 16, the second spring 18 is sleeved on the circumferential side of the top rod 12, one end of the second spring 18 abuts against the upper end side wall of the top rod 12, the other end of the second spring 18 abuts against the side wall of the copper pad 17, and the lower end of the top rod 12 is inserted and slides in the Y-shaped ring 16.

[0022] Referring to Figure 3 , the sealing head 4 comprises a sealing sheet 19 and a spring seat 20, one end of the spring seat 20 is fixedly attached to the lower end face of the sealing sheet 19, the middle part of the sealing sheet 19 is provided with a boss 21, the upper end of the boss 21 is inserted into the valve port 7, the circumferential side of the upper end face of the sealing sheet 19 is bent to form a ring groove 22, the circumferential side of the sealing sheet 19 is arranged in an upward bending mode, the lower end circumferential side of the valve port 7 is integrally provided with a ring block 23, the lower end of the ring block 23 is inserted into the ring groove 22, a plurality of ventilation holes 24 are uniformly arranged on the circumferential side of the sealing sheet 19, the lower end of the flow channel 6 is opened from the lower end face of the valve body 1, the base 25 is fixedly arranged in the lower end of the flow channel 6, the first spring 26 is vertically arranged between the base 25 and the sealing sheet 19, the upper end of the first spring 26 is sleeved on the circumferential side of the spring seat 20, and the lower end of the first spring 26 abuts against the upper end of the base 25.

[0023] The two locking blocks 27 are integrally arranged on the circumferential side of the spring seat 20, and the upper end of the first spring 26 is screwed on the two locking blocks 27.

[0024] The application discloses an implementation principle of a cut-off type two-position three-way manual valve.

[0025] When the valve core 2 is in a static state, the lower end of the valve core 2 is away from the sealing head 4 under the action of the second spring 18, the sealing head 4 is sealed on the valve port 7 under the action of the first spring 26, the working port 9 is communicated with the exhaust port 10 through the flow channel 6, the exhaust channel 14 and the through hole 15, when it is needed to communicate the working port 9 with the inlet port 8, the driving handle 5 is pressed to compress the second spring 18, the lower end of the valve core 2 is abutted on the sealing head 4, the sealing head 4 seals the exhaust channel 14, then the valve core 2 continuously moves downwards, the sealing head 4 is away from the valve port 7, the valve port 7 is opened, and the first spring 26 is compressed, then the gas flow of the inlet port 8 enters the working port 9 through the lower end of the flow channel 6, the plurality of air vents 24 and the upper end of the flow channel 6.

[0026] The above is only a preferred embodiment of the present application, so equivalent changes or modifications made according to the structure, features and principles of the present application patent application range are included in the present application patent application range.

Claims

1. A stop type two-position three-way manual valve, comprising a valve body (1), a valve core (2), a valve head (3) and a sealing head (4), the side wall of the valve core (2) is respectively provided with an air inlet (8), a working port (9) and an exhaust port (10), a flow channel (6) is formed in the valve body (1), the two ends of the flow channel (6) are respectively communicated with the air inlet (8) and the working port (9), the flow channel (6) is provided with a valve port (7), one side of the sealing head (4) abuts on the valve port (7), the valve head (3) is inserted and fixed in the side wall of the valve body (1), the valve core (2) is inserted and slid in the valve head (3), the inner end of the valve core (2) is inserted into the flow channel (6), the valve core (2) is provided with an exhaust channel (14), one end of the exhaust channel (14) penetrates out from the inner end of the valve core (2), the other end of the exhaust channel (14) is communicated with the exhaust port (10), the inner end of the valve core (2) abuts on the side wall of the sealing head (4), characterized in that: The flow channel (6) has a first spring (26) inside, the first spring (26) drives the sealing head (4) to close the valve port (7), the sealing head (4) comprises a sealing sheet (19) and a spring seat (20), the sealing sheet (19) is attached to the valve port (7), a plurality of ventilation openings (24) are evenly arranged on the circumferential side of the sealing sheet (19), one end of the spring seat (20) is arranged on the side wall of the sealing sheet (19), and one end of the first spring (26) is sleeved on the circumferential side of the spring seat (20) and abuts against the side wall of the sealing sheet (19).

2. The stop type two-position three-way manual valve according to claim 1, wherein The valve port (7) is provided with a ring block (23) on the circumferential side near one end of the sealing head (4), and the side wall of the sealing sheet (19) has a ring groove (22) matched with the ring block (23).

3. The stop type two-position three-way manual valve according to claim 1, wherein The middle part of the sealing sheet (19) has a boss (21) inserted into the valve port (7).

4. The stop type two-position three-way manual valve according to claim 1, wherein The circumferential side of the spring seat (20) is provided with a locking block (27), and one end of the first spring (26) is clamped on the locking block (27).

5. The stop type two-position three-way manual valve according to claim 1, wherein The valve body (1) has a Y-shaped ring (16) placed inside, and the valve core (2) is inserted and slid in the Y-shaped ring (16).

6. A stop type two-position three-way manual valve according to claim 5, wherein The valve body (1) has a second spring (18) inside, and the second spring (18) drives the valve core (2) away from the sealing head (4).

7. A stop type two-position three-way manual valve according to claim 6, wherein One side of the Y-shaped ring (16) is provided with a copper pad (17), one end of the second spring (18) abuts against the side wall of the copper pad (17), and the other end of the second spring (18) abuts against the side wall of the valve core (2).

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