Overflow valve with external control port

Abstract

The utility model discloses an external control port overflow valve, and relates to the field of overflow valves, the external control port overflow valve comprises a valve seat and a valve cover installed on the valve seat, a first cavity and a second cavity are formed in the valve seat, a same connecting port is formed between the first cavity and the second cavity, the inner wall of the connecting port is slidably connected with a valve element, and the valve element is connected with a valve rod. A connecting shaft is fixedly connected to the outer wall of the top of the valve element, two circular openings are formed in the outer wall of the valve seat, and the two circular openings communicate with the first cavity and the second cavity correspondingly. The two mounting rods are arranged in the valve cover, the four springs are arranged on the two mounting rods correspondingly, the four springs assist the sliding seat to drive the connecting shaft to slide, the connecting shaft directly drives the valve element to move when sliding, the valve element acts to conveniently control connection and disconnection of the connecting opening, and the service life of the springs is prolonged through the arrangement of the multiple springs.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of overflow valves, in particular to an external control port overflow valve. BACKGROUND

[0002] The safety valve is also called overflow valve. The safety valve is a key safety application guarantee for pressure pipeline and pressure container. In order to ensure the normal work of the safety valve and prolong the service life of the safety valve, it should be checked regularly whether the safety valve in operation leaks, is blocked and spring is corroded, and whether the locking nut of the adjusting sleeve and the adjusting ring is loose. If problems are found, appropriate maintenance measures should be taken in time.

[0003] The traditional overflow valve is usually reset by a single spring. However, the single spring is easy to be damaged in actual operation, thereby reducing the service life of the spring and causing the valve body to be prone to failure. CONTENT OF THE INVENTION

[0004] In order to solve the problem that the existing overflow valve spring is easy to be damaged, the present application provides an external control port overflow valve.

[0005] The external control port overflow valve provided by the present application adopts the following technical scheme:

[0006] An external control port overflow valve comprises a valve seat and a valve cover installed on the valve seat. The inner part of the valve seat is respectively provided with a cavity one and a cavity two, and a same connecting port is arranged between the cavity one and the cavity two. The inner wall of the connecting port is slidably connected with a valve core, and the outer wall of the top of the valve core is fixedly connected with a connecting shaft. The outer wall of the valve seat is provided with two circular ports, and the two circular ports are respectively communicated with the cavity one and the cavity two.

[0007] By adopting the above technical scheme, the valve core is arranged to conveniently control the on-off of the cavity one and the cavity two. When the liquid pressure rises, the valve core is directly lifted to open the connecting port to discharge the liquid. The arrangement of the two circular ports facilitates the liquid to enter or discharge the two cavities.

[0008] Preferably, a groove is arranged on the outer wall of the top of the valve cover, and a sliding port is arranged on the inner wall of the bottom of the groove. The connecting shaft is slidably connected with the inner wall of the sliding port.

[0009] By adopting the above technical scheme, the groove is arranged to facilitate the sliding installation of the connecting shaft.

[0010] Preferably, a sliding seat is slidably connected with the inner wall of the groove, and the sliding seat is fixedly connected with the connecting shaft.

[0011] By adopting the above technical scheme, the sliding seat is slidably arranged in the groove, which facilitates the sliding of the connecting shaft.

[0012] Preferably, the two side inner walls of the groove are fixedly connected with two mounting rods, and the outer walls of the two mounting rods are slidably connected with two drive sleeves.

[0013] By adopting the above technical scheme, the two drive sleeves are conveniently slidably mounted through the mounting rods in the groove.

[0014] Preferably, the outer walls of the four drive sleeves are rotatably connected with connecting plates, and one end of each connecting plate is rotatably connected to the sliding seat.

[0015] By adopting the above technical scheme, the sliding seat is conveniently moved through the drive sleeves sliding on the mounting rods and cooperating with the connecting plates.

[0016] Preferably, the outer walls of the two mounting rods are sleeved with two springs, and the outer walls of the two mounting rods are slidably connected with sliding sleeves, and the springs are located between the sliding sleeves and the drive sleeves.

[0017] By adopting the above technical scheme, the drive sleeves are conveniently supported through the springs on the mounting rods, and the springs are conveniently adjusted in elasticity through the sliding sleeves.

[0018] Preferably, the two side inner walls of the groove are rotatably connected with the same bidirectional screw, a worm wheel is fixedly connected to the midpoint of the bidirectional screw, the outer wall of the bidirectional screw is screwed with two symmetrically arranged threaded sleeves, the outer walls of the two threaded sleeves are fixedly connected with fixed plates, and the four fixed plates are fixedly connected to the four sliding sleeves, respectively.

[0019] By adopting the above technical scheme, the bidirectional screw is conveniently directly driven to rotate through the worm wheel, and the two threaded sleeves are conveniently directly driven to move towards or away from each other when the bidirectional screw rotates.

[0020] Preferably, the outer wall of the top of the valve cover is fixedly connected with a cover plate, a hand wheel is rotatably connected to the top outer wall of the cover plate, a worm is rotatably connected to the bottom outer wall of the cover plate, the worm and the worm wheel are in meshing engagement, and one end of the transmission shaft of the worm is fixedly connected to the hand wheel.

[0021] By adopting the above technical scheme, the worm is driven to rotate through the rotation of the hand wheel, the worm is directly driven to rotate through the rotation of the worm, and the elasticity of the spring on the mounting rod is adjusted.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The present application sets two mounting rods in the valve cover, four springs are arranged on the two mounting rods, respectively, the arrangement of the four springs assists the sliding seat in driving the connecting shaft to slide, the connecting shaft is directly driven to move when sliding, the action of the valve core conveniently controls the on-off of the connecting port, and the arrangement of the multiple springs improves the service life of the spring.

[0024] 2. The application sets a bidirectional screw rod and a threaded sleeve in the valve cover, the bidirectional screw rod drives the threaded sleeve to move when rotating, thereby facilitating the cooperation of the fixed plate to drive the sliding sleeve to move, and the sliding sleeve facilitates the direct adjustment of the spring force when moving. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The overall structure of an externally controlled overflow valve is shown in the embodiment of the application.

[0026] Figure 2 The schematic diagram of the valve seat cross-sectional structure is shown in the embodiment of the application.

[0027] Figure 3 The schematic diagram of the valve cover cross-sectional structure is shown in the embodiment of the application.

[0028] Figure 4 The schematic diagram of the groove top view structure is shown in the embodiment of the application.

[0029] The reference signs are explained as follows: 1, valve seat; 2, valve cover; 3, hand wheel; 4, circular port; 5, cavity one; 6, cavity two; 7, connecting port; 8, valve core; 9, groove; 10, sliding seat; 11, connecting shaft; 12, cover plate; 13, mounting rod; 14, spring; 15, sliding sleeve; 16, driving sleeve; 17, connecting plate; 18, worm; 19, bidirectional screw rod; 20, worm gear; 21, threaded sleeve; 22, fixed plate. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying Figures 1-4 The application will be further described in detail.

[0031] The embodiment of the application discloses an externally controlled overflow valve.

[0032] Reference Figures 1-3 An externally controlled overflow valve comprises a valve seat 1 and a valve cover 2 mounted on the valve seat 1.

[0033] Reference Figures 1-2 The inner part of the valve seat 1 is respectively provided with a cavity one 5 and a cavity two 6, and a same connecting port 7 is arranged between the cavity one 5 and the cavity two 6, the inner wall of the connecting port 7 is slidably connected with a valve core 8, and the top outer wall of the valve core 8 is fixedly connected with a connecting shaft 11, the outer wall of the valve seat 1 is provided with two circular ports 4, and the two circular ports 4 are respectively connected with the cavity one 5 and the cavity two 6, and the arrangement of the valve core 8 facilitates the control of the on-off between the cavity one 5 and the cavity two 6, when the liquid pressure rises, the valve core 8 is directly lifted to open the connecting port 7 to discharge the liquid, and the arrangement of the two circular ports 4 facilitates the liquid to enter or discharge the two cavities.

[0034] Reference Figures 3-4, the outer wall of the top of the valve cover 2 is provided with a groove 9, and the inner wall of the bottom of the groove 9 is provided with a sliding port, the connecting shaft 11 is slidably connected to the inner wall of the sliding port, the inner wall of the groove 9 is slidably connected with the sliding seat 10, and the sliding seat 10 is fixedly connected to the connecting shaft 11, the inner wall of the groove 9 is fixedly connected with two installation rods 13, and the outer wall of the two installation rods 13 is slidably connected with two driving sleeves 16, the outer wall of the four driving sleeves 16 is rotatably connected with the connecting plate 17, one end of the connecting plate 17 is rotatably connected to the sliding seat 10, the outer wall of the two installation rods 13 is sleeved with two springs 14, and the outer wall of the two installation rods 13 is slidably connected with the sliding sleeve 15, the spring 14 is located between the sliding sleeve 15 and the driving sleeve 16;

[0035] In use, the spring 14 on the installation rod 13 supports the driving sleeve 16, the sliding sleeve 15 is provided to facilitate the adjustment of the spring force of the spring 14, the driving sleeve 16 slides on the installation rod 13, so as to facilitate the cooperation of the connecting plate 17 to drive the sliding seat 10 to move, the installation rod 13 in the groove 9 facilitates the sliding installation of the two driving sleeves 16, and the sliding seat 10 slides in the groove 9 to directly drive the connecting shaft 11 to slide.

[0036] Refer to Figures 3-4 , the same two-way screw 19 is rotatably connected to the inner wall of the groove 9, and the midpoint of the two-way screw 19 is fixedly connected with the worm wheel 20, the outer wall of the two-way screw 19 is screwed with two symmetrically arranged threaded sleeves 21, and the outer wall of the two threaded sleeves 21 is fixedly connected with the fixed plate 22, the four fixed plates 22 are respectively fixedly connected to the four sliding sleeves 15, the outer wall of the top of the valve cover 2 is fixedly connected with the cover plate 12, and the outer wall of the top of the cover plate 12 is rotatably connected with the hand wheel 3, the outer wall of the bottom of the cover plate 12 is rotatably connected with the worm 18, and the worm 18 and the worm wheel 20 are meshed with each other, one end of the transmission shaft of the worm 18 is fixedly connected to the hand wheel 3, the worm 18 is driven to rotate by rotating the hand wheel 3, the worm 18 is directly driven to rotate the worm wheel 20, so as to realize the adjustment of the spring force of the spring 14 on the installation rod 13, the worm wheel 20 is directly driven to rotate the two-way screw 19, and the two-way screw 19 is directly driven to move the two threaded sleeves 21 towards or away from each other when the two-way screw 19 rotates.

[0037] The implementation principle of the external control port overflow valve is as follows: when in use, liquid enters cavity one 5 through one of the circular ports 4, and pushes the valve core 8 to move upward under the action of liquid pressure, so that the liquid is conveniently overflowed from cavity two 6; when the valve core 8 moves upward, it directly pushes the sliding seat 10 to move upward through the connecting shaft 11; when the sliding seat 10 moves upward, it pushes the two drive sleeves 16 to move away from each other through the connecting plate 17; when the two drive sleeves 16 move away from each other, the spring 14 is conveniently compressed; when the liquid pressure decreases, the spring 14 drives the valve core 8 to close the connecting port 7, so that the valve seat 1 is conveniently closed; when it is necessary to adjust the spring force of the spring 14, the hand wheel 3 is manually rotated to drive the worm 18 to rotate; when the worm 18 rotates, the worm wheel 20 is directly driven to rotate, so that the bidirectional screw rod 19 is conveniently driven to rotate to drive the two threaded sleeves 21 to move towards each other; when the threaded sleeves 21 move towards each other, the sliding sleeve 15 is directly driven to be compressed through the fixed plate 22.

[0038] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An externally controlled overflow valve, comprising a valve seat (1) and a valve cover (2) mounted on the valve seat (1), characterized in that: The valve seat (1) has a cavity 1 (5) and a cavity 2 (6) respectively, and a common connection port (7) is provided between the cavity 1 (5) and the cavity 2 (6). A valve core (8) is slidably connected to the inner wall of the connection port (7), and a connecting shaft (11) is fixedly connected to the top outer wall of the valve core (8). The outer wall of the valve seat (1) has two circular openings (4), and the two circular openings (4) are respectively connected to the cavity 1 (5) and the cavity 2 (6).

2. The external control port overflow valve according to claim 1, characterized in that: The valve cover (2) has a groove (9) on its top outer wall and a sliding opening on its bottom inner wall. The connecting shaft (11) is slidably connected to the inner wall of the sliding opening.

3. The external control port overflow valve according to claim 2, characterized in that: The inner wall of the groove (9) is slidably connected to a sliding seat (10), and the sliding seat (10) is fixedly connected to the connecting shaft (11).

4. An external control port overflow valve according to claim 3, characterized in that: Two mounting rods (13) are fixedly connected to the inner walls of both sides of the groove (9), and two drive sleeves (16) are slidably connected to the outer walls of the two mounting rods (13).

5. An external control port overflow valve according to claim 4, characterized in that: Each of the four drive sleeves (16) has a connecting plate (17) rotatably connected to its outer wall, and one end of the connecting plate (17) is rotatably connected to the sliding seat (10).

6. An external control port overflow valve according to claim 5, characterized in that: Two springs (14) are sleeved on the outer walls of the two mounting rods (13), and sliding sleeves (15) are slidably connected to the outer walls of the two mounting rods (13). The springs (14) are located between the sliding sleeves (15) and the drive sleeves (16).

7. An external control port overflow valve according to claim 6, characterized in that: The inner walls of both sides of the groove (9) are rotatably connected to the same bidirectional screw (19), and a worm gear (20) is fixedly connected at the midpoint of the bidirectional screw (19). The outer wall of the bidirectional screw (19) is screwed with two symmetrically arranged threaded sleeves (21), and the outer walls of the two threaded sleeves (21) are fixedly connected with fixing plates (22). The four fixing plates (22) are respectively fixedly connected to four sliding sleeves (15).

8. An external control port overflow valve according to claim 7, characterized in that: The valve cover (2) is fixedly connected to the top outer wall of the cover plate (12), and the top outer wall of the cover plate (12) is rotatably connected to the handwheel (3). The bottom outer wall of the cover plate (12) is rotatably connected to the worm (18), and the worm (18) and the worm wheel (20) mesh with each other. One end of the drive shaft of the worm (18) is fixedly connected to the handwheel (3).

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