Quick-change ball valve with double mechanical interlocking assemblies

Abstract

The invention discloses a quick-change type ball valve with double mechanical interlocking assemblies, and particularly relates to the technical field of fluid control equipment, the quick-change type ball valve comprises a first ball valve and a second ball valve, and the second ball valve is installed on the side face of the first ball valve through a buckle; the first ball valve comprises a first valve element, a first valve seat, a first ball valve handle, a marble, a first pin and a first connecting buckle, a circular hole is formed in the upper wall of the first valve seat, a horizontally-placed first rectangular fillet long plate is arranged above the first ball valve handle, and a second arc-shaped groove is formed in the fillet position; a vertically-placed first threaded long rod structure is installed below the first rectangular fillet long plate, the first threaded long rod structure of the first ball valve handle vertically penetrates through a first circular hole of the first valve seat, and the first threaded long rod structure is rotationally connected with the first circular hole of the first valve seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid control devices, and more particularly to a quick-change ball valve with a double mechanical interlocking assembly. BACKGROUND

[0002] Ball valves are a common type of fluid control valve and are widely used in industrial and domestic pipeline systems. Domestic or ordinary industrial ball valves generally lack locking functions, and the valve handles can be freely rotated, which poses a risk of accidental opening or closing due to accidental contact or misoperation, and the safety is relatively low. In addition, some industrial ball valves with self-locking functions usually only have single self-locking, such as only locking the handle when the valve is disconnected, or locking the connection mechanism when the valve is connected, and cannot achieve double forced interlocking of disconnection prohibition opening and opening prohibition disconnection. Therefore, a quick-change ball valve with a double mechanical interlocking assembly is proposed to solve the above problems. SUMMARY

[0003] In order to overcome the above-mentioned defects of the prior art, the present application provides a quick-change ball valve with a double mechanical interlocking assembly to solve the problems raised in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a quick-change ball valve with a double mechanical interlocking assembly, comprising a first ball valve and a second ball valve, the second ball valve is installed on the side of the first ball valve through a buckle, and the first ball valve comprises a first valve core, a first valve seat, a first valve handle, a marble, a first pin and a first connection buckle, a circular hole is formed in the upper wall of the first valve seat, the first valve handle is horizontally placed on the upper side of the first valve handle, a second arc-shaped groove is formed in the rounded corner of the first rectangular long plate, and a first threaded long rod structure is vertically installed on the lower side of the first rectangular long plate.

[0005] Preferably, the first threaded long rod structure vertically penetrates the first circular hole of the first valve seat, the first threaded long rod structure and the first circular hole of the first valve seat are rotationally connected, and the first threaded long rod structure is threadedly connected with the first valve core.

[0006] By adopting the above technical scheme, when the first threaded long rod structure is rotated by the first rectangular long plate, the first threaded long rod structure will drive the first valve core to rotate together, so that the inner cavity of the first valve core is in communication with the inner cavity of the first valve seat, and the liquid can normally flow through the first valve seat.

[0007] Preferably, the side wall of the first valve core is in close contact with the inner wall of the first valve seat horizontal passage, and the side wall of the first valve seat horizontal passage is provided with a third hole for placing the first pin, and the side wall adjacent to the first ball valve handle is provided with a channel allowing the ball to slide, the ball can slide into the second arc-shaped groove from the channel, and the first pin is a conical cylindrical structure, and the side wall of the first pin is provided with an arc-shaped groove capable of accommodating the ball.

[0008] By adopting the above technical scheme, the first ball valve and the second ball valve are symmetrically designed, when the user buckles the first ball valve and the second ball valve, the side wall of the second ball valve will expose the first pin to the outer end part of the third hole, and all push into the third hole, at this time, the first pin will be displaced backward in the second hole, so that the ball rolls from the second arc-shaped groove of the first ball valve handle into the arc-shaped groove of the side wall of the first pin, thereby releasing the locking of the ball on the first ball valve handle, so that the first ball valve handle can be rotated.

[0009] Preferably, one end of the first pin is provided with a third spring, and the first pin and the first valve seat are in sliding connection, and one end of the first valve seat is provided with two groups of first connection buckles arranged symmetrically upward and downward.

[0010] By adopting the above technical scheme, under normal conditions, the third spring can make one side of the first pin exposed to the outside of the first ball valve, when the first ball valve and the second ball valve are buckled, the first pin will be extruded by the side wall of the second ball valve, thereby extruding the third spring, when the first ball valve and the second ball valve are disconnected, the first pin will be popped out of the third hole by the third spring, and the original state is restored.

[0011] Preferably, the second ball valve comprises a second valve core, a second valve seat, a second ball valve handle, a second pin, a second connection buckle and a second spring, and the upper wall of the second valve seat is provided with a second circular hole penetrating through the inner wall, so that the second threaded long rod structure of the second ball valve handle passes through the second circular hole and enters the inside of the second valve seat.

[0012] By adopting the above technical scheme, the second ball valve has a basically symmetrical independent valve body structure with the first ball valve, and the second valve core is driven to rotate in the inner cavity of the second valve seat by the second ball core handle, so as to realize on-off.

[0013] Preferably, the lower end of the second threaded long rod structure is in threaded connection with the second valve core, and the second valve core is in close contact with the inner wall surface of the second valve seat horizontal passage.

[0014] Preferably, a lifting rod is arranged below the second valve core, and a vertical groove is arranged below the lifting rod, and a first spring is arranged in the groove, and the bottom of the first spring is in interference fit with the second valve seat.

[0015] By adopting the technical scheme, in the process of driving the second valve core to rotate, the position of the second ball valve handle gradually moves downward, and the bottom of the second valve core contacts the top end of the lifting rod, and then the lifting rod moves downward, during which the lifting rod compresses the first spring below and deforms, when the user reversely rotates, the second valve core moves upward, and the first spring restores the lifting rod to the original position, preventing liquid from leaking out of the gap.

[0016] Preferably, the side wall of the handle part of the second ball valve handle is provided with a first arc-shaped groove, and the side wall of the second valve seat is provided with a fourth through hole parallel to the horizontal channel, and a second pin is arranged in the fourth through hole.

[0017] Preferably, the second pin can slide in the fourth through hole, one end of the second pin is a conical structure, the other end is a long rod structure, the first arc-shaped groove can accommodate the conical end of the second pin, and the outer diameter surface of the second pin is provided with a second spring.

[0018] By adopting the technical scheme, when the user twists the second ball valve handle to move the second ball core downward, the second pin is also ejected from the first arc-shaped groove of the second ball valve handle.

[0019] Preferably, the side wall of the second valve seat is provided with a second connecting buckle, the second connecting buckle can be inserted into the clamping groove of the side wall of the first ball valve, and a fifth hole is arranged below the third hole.

[0020] By adopting the technical scheme, when the second pin is ejected from the second ball valve handle, due to the pulling force of the second spring, it will pop out from the end face of the second valve seat and be inserted into the fifth hole of the first valve seat, realizing the connection of the first ball valve and the second ball valve.

[0021] Technical effects and advantages of the present application: Compared with the prior art, the quick-change ball valve with a double mechanical interlocking assembly solves the problem that the handle of the traditional ball valve is accidentally opened when it is stored or transported alone. When the two ball valves are not connected, the first pin is ejected under the action of the third spring, and the marble is pushed into the groove of the first ball valve handle, thereby physically locking the first ball valve handle, realizing the passive safety of forced valve closing, and fundamentally eliminating the risk of unexpected opening of the valve due to accidental touch or misoperation.

[0022] Compared with the prior art, the quick-change ball valve with the double mechanical interlocking assembly effectively overcomes the safety hidden danger that the valve state and the connection state are independent of each other in the combination scheme of the traditional ball valve and the quick-change joint, when the two valve bodies are butted and the second ball valve handle is rotated to the open position, the second pin is automatically pushed out and inserted into the lock hole of the first valve seat, a rigid connection lock is formed, and it is ensured that the two valve bodies cannot be separated in the pipeline pressure flow state, and the dangerous pressurized disconnection operation is prevented.

[0023] Compared with the prior art, the quick-change ball valve with the double mechanical interlocking assembly can control the liquid in and out by using another ball valve after one ball valve fails, and the interlocking design also ensures that the two ball valves cannot be separated when the valve cores of the two ball valves are not closed, when the two ball valves are butted, the first ball valve handle can be used to open the first valve core of the first ball valve, when the two ball valves are butted together and the first valve core and the second valve core are opened, the two ball valves cannot be separated, and only when the valve cores of the two ball valves are closed at the same time, the second pin can be pulled out of the first ball valve, so that the two ball valves are separated. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application.

[0025] Figure 2 It is a schematic diagram of the first valve seat of the present application.

[0026] Figure 3 It is a schematic diagram of the lifting rod of the present application.

[0027] Figure 4 It is a schematic diagram of the first arc-shaped groove of the present application.

[0028] Figure 5 It is a schematic diagram of the side view structure of the first connecting buckle of the present application.

[0029] Figure 6 It is a schematic diagram of the side view structure of the first valve seat of the present application.

[0030] Figure 7 It is a schematic diagram of the top view structure of the first pin of the present application.

[0031] Figure 8 It is a schematic diagram of the top view structure of the second pin of the present application.

[0032] The attached figures are labeled as follows: 1. First ball valve; 2. Second ball valve; 3. First valve core; 4. First valve seat; 5. First ball valve handle; 501. First rectangular rounded corner plate; 502. First threaded long rod structure; 6. Ball bearing; 7. First pin; 8. First connecting buckle; 9. Second valve core; 10. Second valve seat; 11. Second ball valve handle; 1101. Second threaded long rod structure; 12. Second pin; 13. Second connecting buckle; 14. Second spring; 15. First arc-shaped groove; 16. Third spring; 17. Lifting rod; 18. First spring; 19. Third hole; 20. Fifth hole. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0034] As attached Figures 1 to 6 The quick-change ball valve shown includes a first ball valve 1 and a second ball valve 2. The second ball valve 2 is installed on the side of the first ball valve 1 by a snap fastener. The first ball valve 1 includes a first valve core 3, a first valve seat 4, a first ball valve handle 5, a ball 6, a first pin 7, and a first connecting snap fastener 8. A circular hole is opened on the upper wall of the first valve seat 4. Above the first ball valve handle 5 is a horizontally placed first rectangular rounded corner plate 501. A second arc-shaped groove is opened at the rounded corner of the first rectangular rounded corner plate 501. A vertically placed first threaded rod structure 502 is installed below the first rectangular rounded corner plate 501.

[0035] Specifically: When the first ball valve 1 is connected to the second ball valve 2, the two sets of first connecting clips 8 of the first ball valve 1 and the second connecting clips 13 of the second ball valve 2 are first installed into the corresponding slots of the second ball valve 2 and the first ball valve 1, respectively. At this time, the end face of the second ball valve 2 will press the exposed end face of the first pin 7 in the first ball valve 1, causing the first pin 7 to move inward in the rod body of the third hole, thereby aligning the arc groove of the first pin 7 with the second arc groove of the first ball valve handle 5. At this time, the ball 6 will enter the concave groove on the side wall of the first pin 7 through the channel from the second arc groove, thereby unlocking the first ball valve 1. At this time, the user can turn the first ball valve handle 5, which will drive the first valve core 3 to rotate in the inner cavity of the first valve seat 4, thereby opening the first ball valve 1. Example

[0036] Based on the embodiment 1, the scheme in embodiment 1 is further refined on the basis of the following specific working mode, as Figures 1 to 6 As shown in the following description: As a preferred embodiment, the first threaded long rod structure 502 vertically passes through the first circular hole of the first valve seat 4, the first threaded long rod structure 502 and the first circular hole of the first valve seat 4 are rotationally connected, the first threaded long rod structure 502 is threadedly connected with the first valve core 3, when the operator rotates the first threaded long rod structure 502 through the first rectangular round long plate 501, the first threaded long rod structure 502 will drive the first valve core 3 to rotate together, so that the inner cavity of the first valve core 3 is communicated with the inner cavity of the first valve seat 4, and the liquid can normally flow through the first valve seat 4.

[0037] As a preferred embodiment, the side wall of the first valve core 3 is tightly attached to the inner wall of the horizontal passage of the first valve seat 4, the side wall of the horizontal passage of the first valve seat 4 is provided with a third hole 19 for placing the first pin 7, the side wall adjacent to the first ball valve handle 5 is provided with a channel allowing the sliding of the ball 6, the ball 6 can slide into the second arc-shaped groove from the channel, the first pin 7 is a conical cylindrical structure, the side wall of the first pin 7 is provided with an arc-shaped groove capable of accommodating the ball 6, when the first ball valve handle 5 is closed, the ball 6 enters the recess of the first ball valve handle 5, and the spring 16 can push the pin 7 out, at this time, the handle cannot be rotated, the ball 6 is clamped in the recess of the first ball valve handle 5 and cannot open the first ball valve 1, when the first ball valve 1 and the second ball valve 2 are connected, the pin 7 is pressed in, the ball 6 can enter the recess of the first pin 7, and the first ball valve handle 5 can be rotated to open the first ball valve 1, when the two ball valves are separated, the third spring 17 pushes the first pin 7 out again, and the ball 7 enters the recess of the first ball valve handle 5 to lock the first ball valve handle 5, so that the operator cannot rotate the first ball valve handle 5.

[0038] As a preferred embodiment, one end of the first pin 7 is provided with a third spring 16, the first pin 7 and the first valve seat 4 are slidingly connected, one end of the first valve seat 4 is provided with two groups of first connecting buckles 8 symmetrically arranged above and below, in the normal state, the third spring 16 can make one side of the first pin 7 leak outside the first ball valve 1, when the first ball valve 1 and the second ball valve 2 are buckled connected, the first pin 7 will be extruded due to the extrusion of the side wall of the second ball valve 2, thereby extruding the third spring 16, when the first ball valve 1 and the second ball valve 2 are disconnected, the first pin 7 will be popped out of the third hole 19 by the third spring 16 again, and the original state is restored.

[0039] As a preferred embodiment, the second ball valve 2 comprises a second valve core 9, a second valve seat 10, a second ball valve handle 11, a second pin 12, a second connecting buckle 13 and a second spring 14. The upper wall of the second valve seat 10 is provided with a second circular hole penetrating the inner wall thereof, so that the second threaded long rod structure 1101 of the second ball valve handle 11 just penetrates the second circular hole to enter the interior of the second valve seat 10. When the second ball valve 2 is opened, the second pin 12 is protruded, and the second pin 12 enters the fifth hole 20 of the opposite first ball valve 1, so that the two ball valves cannot be separated. When the second ball valve 2 is in a closed state, the first arc-shaped groove 15 is arranged on the upper surface of the second ball valve handle 11, the second pin 12 is partially arranged in the first arc-shaped groove 15 under the pressing of the second spring 14, and the pin 12 is out of the fifth hole 20 of the opposite first ball valve 1 under the action of the second spring 14, so that the two ball valves can be separated.

[0040] As a preferred embodiment, the lower end of the second threaded long rod structure 1101 is threadedly connected with the second valve core 9, and the second valve core 9 is tightly attached to the inner wall surface of the horizontal passage of the second valve seat 10, so that the second ball valve 2 has a substantially symmetrical independent valve body structure with the first ball valve 1, and the second valve core 9 is rotated in the inner cavity of the second valve seat 10 by the second ball core handle to realize on-off.

[0041] As a preferred embodiment, the second valve core 9 is provided with a lifting rod 17 below, the lifting rod 17 is provided with a vertical groove below, and the first spring 18 is arranged in the groove. The bottom of the first spring 18 is in interference fit with the second valve seat 10. During the rotation of the second ball valve handle 11 to drive the second valve core 9, the position of the second ball valve handle 11 gradually moves downward, and the bottom of the second valve core 9 contacts the top end of the lifting rod 17, and then the lifting rod 17 moves downward. During this period, the lifting rod 17 compresses the first spring 18 below to deform. When the user reversely rotates, the second valve core 9 moves upward, and the first spring 18 restores the lifting rod 17 to the original position to prevent liquid from leaking from the gap.

[0042] As a preferred embodiment, the side wall of the handle part of the second ball valve handle 11 is provided with the first arc-shaped groove 15, the side wall of the second valve seat 10 is provided with a fourth through hole parallel to the horizontal passage thereof, and the second pin 12 is arranged in the fourth through hole.

[0043] As a preferred embodiment, the second pin 12 can slide in the fourth through hole, one end of the second pin 12 is a conical structure, the other end is a long rod structure, the first arc-shaped groove 15 can place the conical end of the second pin 12, and the outer diameter surface of the second pin 12 is provided with the second spring 14, when the user twists the second ball valve handle 11 to make the second ball core move downward, the second pin 12 will also be pushed out of the first arc-shaped groove 15 of the second ball valve handle 11.

[0044] As a preferred embodiment, the side wall of the second valve seat 10 is provided with the second connecting buckle 13, the second connecting buckle 13 can be inserted into the clamping groove in the side wall of the first ball valve 1, and the fifth through hole 20 is arranged below the third through hole 19, when the second pin 12 is pushed out of the second ball valve handle 11, because of the pulling force of the second spring 14, the second pin 12 will pop out from the end surface of the second valve seat 10 and be inserted into the fifth through hole 20 of the first valve seat 4, so that the first ball valve 1 and the second ball valve 2 are connected.

[0045] The working process of the present application is as follows: first, the separation operation of the second ball valve 2 and the first ball valve 1 must follow the strict sequence of closing the valve first and then separating, first, rotate the second ball valve handle 11 to the closed position, at this time, the arc-shaped groove on the handle rotating shaft will be re-aligned with the second pin 12 inside it, the second pin 12 will retract under the action of the spring, so that the long rod end will exit from the locking hole of the first ball valve 1, thereby releasing the connection lock between the two valve bodies in the open state, then, the connecting buckles on both sides can be operated and released, and the two ball valves can be separated axially, after the separation is completed, the first pin 7 on the end surface of the first ball valve 1 will automatically pop out and reset under the action of the spring inside it, and the push ball 6 will be re-clamped into the groove of the first ball valve handle 5, and the handle lock in the separated state is immediately restored, so that the valve cannot be accidentally opened when it is stored independently, the above is the working principle of the quick-change ball valve with a double mechanical interlocking assembly.

Claims

1. A quick-change ball valve with a dual mechanical interlock assembly, comprising a first ball valve (1) and a second ball valve (2), characterized in that: The first ball valve (1) has a second ball valve (2) installed on its side by a snap fastener. The first ball valve (1) includes a first valve core (3), a first valve seat (4), a first ball valve handle (5), a ball (6), a first pin (7), and a first connecting snap fastener (8). A circular hole is opened on the upper wall of the first valve seat (4). Above the first ball valve handle (5) is a horizontally placed first rectangular rounded corner plate (501). A second arc-shaped groove is opened at the rounded corner of the first rectangular rounded corner plate (501). A vertically placed first threaded rod structure (502) is installed below the first rectangular rounded corner plate (501).

2. A quick-change ball valve with a double mechanical interlock assembly according to claim 1, characterized in that: The first threaded rod structure (502) passes vertically through the first circular hole of the first valve seat (4), and the first threaded rod structure (502) and the first circular hole of the first valve seat (4) are rotatably connected, and the first threaded rod structure (502) is threadedly connected to the first valve core (3).

3. A quick-change ball valve with a double mechanical interlock assembly according to claim 2, characterized in that: The sidewall of the first valve core (3) is in close contact with the inner wall of the horizontal channel of the first valve seat (4), and the sidewall of the horizontal channel of the first valve seat (4) is provided with a third hole (19) for placing the first pin (7), and the sidewall of the third hole (19) adjacent to the first ball valve handle (5) is provided with a channel that allows the ball (6) to slide. The ball (6) can slide into the second arc-shaped groove from the channel. The first pin (7) is a conical cylindrical structure, and the sidewall of the first pin (7) is provided with an arc-shaped groove that can accommodate the ball (6).

4. A quick-change ball valve with a double mechanical interlock assembly according to claim 3, characterized in that: A third spring (16) is installed at one end of the first pin (7), and the first pin (7) and the first valve seat (4) are slidably connected. Two sets of first connecting buckles (8) are installed at one end of the first valve seat (4) in a symmetrical arrangement.

5. A quick-change ball valve with a double mechanical interlock assembly according to claim 1, characterized in that: The second ball valve (2) includes a second valve core (9), a second valve seat (10), a second ball valve handle (11), a second pin (12), a second connecting buckle (13), and a second spring (14). The upper wall of the second valve seat (10) is provided with a second circular hole that penetrates its inner wall, so that the second threaded long rod structure (1101) of the second ball valve handle (11) passes through the second circular hole and enters the interior of the second valve seat (10).

6. A quick-change ball valve with a double mechanical interlock assembly according to claim 5, characterized in that: The lower end of the second threaded long rod structure (1101) is threadedly connected to the second valve core (9), and the second valve core (9) is in close contact with the inner wall surface of the horizontal channel of the second valve seat (10).

7. A quick-change ball valve with a double mechanical interlock assembly according to claim 5, characterized in that: A lifting rod (17) is provided below the second valve core (9), and a vertical groove is provided below the lifting rod (17), and a first spring (18) is installed in the groove. The bottom of the first spring (18) is interference-fitted with the second valve seat (10).

8. A quick-change ball valve with a double mechanical interlock assembly according to claim 5, characterized in that: The second ball valve handle (11) has a first arc-shaped groove (15) on the side wall of the handle portion, and the second valve seat (10) has a fourth through hole parallel to its horizontal channel on the side wall, and a second pin (12) is placed in the fourth through hole.

9. A quick-change ball valve with a double mechanical interlock assembly according to claim 8, characterized in that: The second pin (12) can slide in the fourth through hole. One end of the second pin (12) is a conical structure and the other end is a long rod structure. The first arc-shaped groove (15) can place the conical end of the second pin (12), and the outer diameter surface of the second pin (12) is provided with a second spring (14).

10. A quick-change ball valve with a double mechanical interlock assembly according to claim 8, characterized in that: The second valve seat (10) has a second connecting buckle (13) installed on its side wall, and the second connecting buckle (13) can be inserted into the slot of the side wall of the first ball valve (1), and a fifth hole (20) is provided below the third hole (19).

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