Marine manual quick-closing valve

Abstract

The utility model provides a manual quick-closing valve for a ship, which comprises a valve body, a valve cover, a valve rod, a valve disc and a spring, a guide ring is arranged at the bottom of the valve cover, the outer diameter of the guide ring is gradually reduced from one side of the valve cover to one side of the valve body, and the maximum outer diameter of the guide ring is the same as the inner diameter of the spring. As the outer diameter of the guide ring is gradually reduced from one side of the valve cover to one side of the valve body, the lower end of the guide ring can still be inserted into the inner ring of the spring when the spring is inclined. In the process that the valve body is close to the valve cover, the width of the portion, stretching into the spring, of the guide ring is gradually increased, and the inclined spring can be gradually corrected. When the valve body and the valve cover are completely buckled, the guide ring can thoroughly correct the inclined spring due to the fact that the maximum outer diameter of the guide ring is the same as the inner diameter of the spring. In this way, in the using process of the quick-closing valve, the sliding smoothness of the valve rod and the valve disc is not prone to being affected.

Description

Technical Field

[0001] The utility model relates to a quick-closing valve, in particular to a manual quick-closing valve for ships. Background Art

[0002] At present, a Chinese patent with the announcement number CN213744944U discloses a latch-type quick-closing valve, comprising a valve body, a valve cover arranged on the top of the valve body, and a valve stem that passes through the valve cover and extends into the valve body. A first flow channel and a second flow channel are provided in the valve body, and a valve seat is provided at the connection between the first flow channel and the second flow channel. A guide baffle is detachably connected to the top of the valve cover. A sealing member is provided between the valve cover and the valve stem, and a clamping screw cover is provided above the sealing member, and the clamping screw cover is threadedly connected to the valve cover. A nut body is provided in the inner cavity of the valve cover, and the nut body is threadedly connected to the valve stem. A handwheel is provided at the top of the valve stem, and a fixing nut is provided above the handwheel. A valve disc is provided at the bottom of the valve stem, and a spring is provided between the valve disc and the valve cover. However, when the valve body and valve cover of the above-mentioned latch-type quick-closing valve are fastened together, the spring located between the valve disc and the valve cover is prone to tilt, which will affect the smoothness of sliding of the valve stem and the valve disc during the subsequent use of the above-mentioned latch-type quick-closing valve. Summary of the invention

[0003] In view of this, the utility model aims to provide a manual quick-closing valve for ships, which has the advantages that the spring is not easily skewed, and the sliding smoothness of the valve stem and the valve disc is not easily affected.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a marine manual quick-closing valve, comprising a valve body, a valve cover pressed and fixed on the top of the valve body, a valve stem penetrating the valve cover and extending into the valve body, a valve disc arranged at the bottom of the valve stem, and a spring arranged between the valve cover and the valve disc, a guide ring is arranged at the bottom of the valve cover, the outer diameter of the guide ring gradually decreases from the side of the valve cover to the side of the valve body, and the maximum outer diameter of the guide ring is the same as the inner diameter of the spring, the valve disc comprises a connecting shaft and a sealing seat, the connecting shaft extends into the spring, and the outer wall of the connecting shaft conflicts with the inner ring of the spring, the outer diameter of the sealing seat is larger than the outer diameter of the spring, and the top of the sealing seat conflicts with the bottom of the spring.

[0005] Through the above technical solution, when the valve body and the valve cover are fastened together, since the outer diameter of the guide ring gradually decreases from the valve cover side to the valve body side, the lower end of the guide ring can still be inserted into the inner ring of the spring when the spring is skewed. In the process of the valve body and the valve cover approaching each other, the width of the guide ring extending into the spring gradually increases, and the skewed spring can be gradually straightened. When the valve body and the valve cover are fully fastened together, since the maximum outer diameter of the guide ring is the same as the inner diameter of the spring, the guide ring can completely straighten the skewed spring. In this way, during the use of the above-mentioned quick-closing valve, the sliding smoothness of the valve stem and the valve disc is not easily affected. The connecting shaft extends into the spring, and the outer wall of the connecting shaft conflicts with the inner ring of the spring, which can be used to limit the lower end of the spring, so that the lower end of the spring is not easy to move laterally.

[0006] Preferably, a mounting ring groove is provided at the bottom of the valve cover, the central axis of the mounting ring groove coincides with the central axis of the valve stem, and a mounting convex ring is provided at the top of the guide ring, and the mounting convex ring is inserted in the mounting ring groove.

[0007] Through the above technical solution, the mounting ring groove and the mounting convex ring cooperate with each other to connect the valve cover and the guide ring, making the disassembly and assembly of the guide ring more convenient and quick.

[0008] Preferably, a limiting ring groove is provided on the inner wall of the mounting ring groove, the central axis of the limiting ring groove coincides with the central axis of the mounting ring groove, a limiting convex ring is provided on the outer wall of the mounting convex ring, and the limiting convex ring is clamped in the limiting ring groove.

[0009] Through the above technical solution, the limiting ring groove and the limiting convex ring cooperate with each other to improve the connection strength between the guide ring and the valve cover.

[0010] Preferably, a rounded corner is provided at the outer edge of the bottom of the guide ring.

[0011] Through the above technical solution, a rounded corner is provided at the bottom outer edge of the guide ring, so that when the guide ring touches the spring, the rounded corner can guide the spring to move to ensure that the guide ring can smoothly enter the inner ring of the spring.

[0012] Preferably, the guide ring comprises a guide seat and a plurality of guide forks arranged at the bottom of the guide seat, and the plurality of guide forks are evenly distributed along the circumference of the guide seat.

[0013] Through the above technical solution, the guide ring is composed of a guide seat and a guide fork, which can reduce the material required for forming the guide ring and can reduce the production cost of the above quick-closing valve to a certain extent.

[0014] Preferably, a receiving opening is provided at a position where the connecting shaft is opposite to the guide fork, and when the valve disc is close to the valve cover, the receiving opening can receive the corresponding guide fork.

[0015] Through the above technical solution, the receiving opening can accommodate the guide fork, so that the valve disc can have a larger stroke.

[0016] Preferably, a rubber protective pad is adhered to the inner wall of the receiving opening, and the rubber protective pad is used to contact the guide fork.

[0017] Through the above technical solution, a rubber protective pad is adhered to the inner wall of the receiving opening, so that the guide fork cannot directly hit the valve disc, so that the guide fork and the valve disc can have a longer service life.

[0018] Preferably, a mounting groove is provided at the top of the connecting shaft, the valve stem is inserted in the mounting groove, a pin hole is provided at the side wall of the connecting shaft, the pin hole is connected to the mounting groove, a positioning groove is provided at the bottom outer wall of the valve stem, the positioning groove is connected to the pin hole, and a pin shaft is inserted between the pin hole and the positioning groove.

[0019] Through the above technical solution, the valve disc is connected to the valve stem using a pin shaft, making the disassembly and assembly of the valve disc more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 for Figure 1 Enlarged view of part A.

[0022] Figure numerals: 1. valve body; 2. valve cover; 3. valve stem; 4. valve disc; 41. connecting shaft; 42. sealing seat; 5. spring; 6. guide ring; 61. guide seat; 62. guide fork; 7. mounting ring groove; 8. mounting convex ring; 9. limiting ring groove; 10. limiting convex ring; 11. receiving opening; 12. rubber protective pad; 13. mounting groove; 14. pin hole; 15. positioning groove; 16. pin shaft. Implementation

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0024] A marine manual quick closing valve, such as Figure 1 to Figure 2 As shown, it includes a valve body 1, a valve cover 2 pressed and fixed on the top of the valve body 1, a valve stem 3 penetrating the valve cover 2 and extending into the valve body 1, a valve disc 4 arranged at the bottom of the valve stem 3, and a spring 5 arranged between the valve cover 2 and the valve disc 4.

[0025] A guide ring 6 is provided at the bottom of the valve cover 2, and the outer diameter of the guide ring 6 gradually decreases from the valve cover 2 side to the valve body 1 side, and the maximum outer diameter of the guide ring 6 is the same as the inner diameter of the spring 5. The outer edge of the bottom of the guide ring 6 is provided with a rounded corner.

[0026] The valve disc 4 includes a connecting shaft 41 and a sealing seat 42. The connecting shaft 41 extends into the spring 5, and the outer wall of the connecting shaft 41 conflicts with the inner ring of the spring 5. The outer diameter of the sealing seat 42 is larger than the outer diameter of the spring 5, and the top of the sealing seat 42 conflicts with the bottom of the spring 5.

[0027] The bottom of the valve cover 2 is provided with a mounting ring groove 7, and the central axis of the mounting ring groove 7 coincides with the central axis of the valve stem 3. The top of the guide ring 6 is provided with a mounting convex ring 8, which is inserted into the mounting ring groove 7. A limiting ring groove 9 is provided on the inner wall of the mounting ring groove 7, and the central axis of the limiting ring groove 9 coincides with the central axis of the mounting ring groove 7. A limiting convex ring 10 is provided on the outer wall of the mounting convex ring 8, and the limiting convex ring 10 is clamped in the limiting ring groove 9.

[0028] The guide ring 6 includes a guide seat 61 and a plurality of guide forks 62 disposed at the bottom of the guide seat 61. The plurality of guide forks 62 are evenly distributed along the circumference of the guide seat 61. A receiving opening 11 is provided at a position opposite to the connecting shaft 41 and the guide forks 62. When the valve disc 4 is close to the valve cover 2, the receiving opening 11 can receive the corresponding guide fork 62. A rubber protective pad 12 is adhered to the inner wall of the receiving opening 11, and the rubber protective pad 12 is used to contact the guide fork 62.

[0029] A mounting groove 13 is provided at the top of the connecting shaft 41, and the valve stem 3 is inserted in the mounting groove 13. A pin hole 14 is provided at the side wall of the connecting shaft 41, and the pin hole 14 is connected to the mounting groove 13. A positioning groove 15 is provided at the bottom outer wall of the valve stem 3, and the positioning groove 15 is connected to the pin hole 14. A pin shaft 16 is inserted between the pin hole 14 and the positioning groove 15.

[0030] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A manual quick-closing valve for use on a ship, comprising a valve body (1), a valve cover (2) pressed and fixed to the top of the valve body (1), a valve stem (3) penetrating the valve cover (2) and extending into the valve body (1), a valve disc (4) arranged at the bottom of the valve stem (3), and a spring (5) arranged between the valve cover (2) and the valve disc (4), wherein: A guide ring (6) is provided at the bottom of the valve cover (2), and the outer diameter of the guide ring (6) gradually decreases from the valve cover (2) side to the valve body (1) side, and the maximum outer diameter of the guide ring (6) is the same as the inner diameter of the spring (5). The valve disc (4) includes a connecting shaft (41) and a sealing seat (42), and the connecting shaft (41) extends into the spring (5), and the outer wall of the connecting shaft (41) is in conflict with the inner ring of the spring (5). The outer diameter of the sealing seat (42) is greater than the outer diameter of the spring (5), and the top of the sealing seat (42) is in conflict with the bottom of the spring (5).

2. A marine manual quick closing valve according to claim 1, characterized in that: The bottom of the valve cover (2) is provided with a mounting ring groove (7), the central axis of the mounting ring groove (7) coincides with the central axis of the valve stem (3), and the top of the guide ring (6) is provided with a mounting convex ring (8), and the mounting convex ring (8) is inserted into the mounting ring groove (7).

3. A marine manual quick closing valve according to claim 2, characterized in that: A limiting ring groove (9) is provided on the inner wall of the mounting ring groove (7), the central axis of the limiting ring groove (9) coincides with the central axis of the mounting ring groove (7), and a limiting convex ring (10) is provided on the outer wall of the mounting convex ring (8), the limiting convex ring (10) being clamped in the limiting ring groove (9).

4. A marine manual quick closing valve according to claim 1, characterized in that: The outer edge of the bottom of the guide ring (6) is provided with a rounded corner.

5. A marine manual quick closing valve according to claim 1, characterized in that: The guide ring (6) comprises a guide seat (61) and a plurality of guide forks (62) arranged at the bottom of the guide seat (61), wherein the plurality of guide forks (62) are evenly distributed along the circumference of the guide seat (61).

6. A marine manual quick closing valve according to claim 5, characterized in that: A receiving opening (11) is provided at a position opposite to the connecting shaft (41) and the guide fork (62); when the valve disc (4) is close to the valve cover (2), the receiving opening (11) can receive the corresponding guide fork (62).

7. A marine manual quick closing valve according to claim 6, characterized in that: A rubber protective pad (12) is bonded to the inner wall of the receiving opening (11), and the rubber protective pad (12) is used to contact the guide fork (62).

8. A marine manual quick closing valve according to claim 1, characterized in that: The top of the connecting shaft (41) is provided with a mounting groove (13), the valve stem (3) is inserted in the mounting groove (13), the side wall of the connecting shaft (41) is provided with a pin hole (14), the pin hole (14) is connected to the mounting groove (13), the bottom outer wall of the valve stem (3) is provided with a positioning groove (15), the positioning groove (15) is connected to the pin hole (14), and a pin shaft (16) is inserted between the pin hole (14) and the positioning groove (15).

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