Dual seat ball valve

Abstract

The application provides a double-union ball valve, and relates to the field of valves, which comprises a double-union ball valve body, left and right ends of the double-union ball valve body are provided with union joints, a control valve shaft mounting seat is arranged at the top of the double-union ball valve body, a lubricant injection hole is formed in the circumferential outer wall of the control valve shaft mounting seat, a sliding mounting block is arranged in the sliding mounting groove, a sealing gasket in the temporary sealing column is arranged in the flow-through hole of the on-off ball valve body to temporarily seal the flow-through hole, and the on-off ball valve body cannot be rotated to play a remedial role, so that the double-union valve cannot stop water flow when the on-off ball valve body cannot be rotated, and the problem that the existing double-union ball valve lacks a temporary flow stopping structure in an emergency and cannot temporarily stop water flow when the double-union ball valve cannot be rotated is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a double-joint ball valve. BACKGROUND

[0002] The double-joint ball valve is a water component, both ends of which are made of PPR material, and the middle part is a copper ball. The double-joint ball valve has the advantages of compact structure, symmetrical valve body and high pressure difference resistance. For example, the patent with the application number CN201510491867.6 discloses a new double-joint copper ball valve, which comprises a ball valve and a connecting head. The ball valve is provided with a connecting head on one side, and the connecting head and the ball valve are in communication with each other. The connecting head is provided with a protective component on one side. The protective component is a circular ring structure. The ball valve is provided with a control ball in the center. The control ball is connected with a control rod. The control rod and the control ball are provided with a steering rod. The steering rod is provided with a fixed nut at the top. The fixed nut connects the control rod and the steering rod. The ball valve is provided with a groove, which can increase the rotation area of the control ball, prevent the control ball from directly contacting the inner surface of the ball valve, and cause serious wear of the inner surface of the ball valve, thereby shortening the service life of the ball valve. The ball valve is provided with a plating layer, which can prolong the service life of the ball valve and prevent the outer surface of the ball valve from being corroded.

[0003] The existing double-joint ball valve, such as the above-mentioned double-joint ball valve, is prone to be twisted after being in the water state for a long time. This will cause the double-joint ball valve to directly lose the function of stopping water flow. The existing double-joint ball valve lacks a temporary flow stopping structure in an emergency, and cannot temporarily stop the water flow when the double-joint ball valve is twisted. SUMMARY

[0004] Therefore, the present application provides a double-joint ball valve to solve the problem that the existing double-joint ball valve lacks a temporary flow stopping structure in an emergency, and cannot temporarily stop the water flow when the double-joint ball valve is twisted.

[0005] The application provides a double-union ball valve, which specifically comprises a double-union ball valve body, the left and right ends of the double-union ball valve body are provided with union joints, the top of the double-union ball valve body is provided with a control valve shaft mounting seat in the middle, a lubricant injection hole is formed in the circumferential outer wall of the control valve shaft mounting seat, an oil infiltration lubrication hole is formed in the circumferential inner wall of the control valve shaft mounting seat, the control valve shaft mounting seat is internally provided with a control valve shaft, the bottom end of the control valve shaft is provided with an on-off ball valve body, a flow-through hole is formed in the on-off ball valve body, and the on-off ball valve body is located in the interior of the double-union ball valve body, a sliding installation groove is formed in the circumferential inner wall of the double-union ball valve body, and the sliding installation groove is a T-shaped structure, the sliding installation groove is internally provided with a sliding installation block, and the sliding installation block is a T-shaped structure, the inner end of the sliding installation block is provided with a temporary sealing column, and the inner end of the temporary sealing column is provided with a sealing gasket.

[0006] Further, one end of a restoring spring A is embedded and installed on the inner side of the sliding installation block, and the other end of the restoring spring A is embedded and installed on the inner side of the sliding installation groove.

[0007] Further, a stress groove is formed in the top of the sliding installation block, and the bottom end of the stress groove is in an inclined structure.

[0008] Further, installation stroke grooves are formed in the top left and right sides of the double-union ball valve body, and the installation stroke grooves are internally provided with trigger plates.

[0009] Further, the bottom end of the trigger plate is in an inclined structure, and the inclined surface of the bottom end of the trigger plate is in abutting contact with the inclined surface of the stress groove.

[0010] Further, installation baffle plates are arranged on the front and back sides of the trigger plate, and the installation baffle plates are rectangular structures.

[0011] Further, one end of a restoring spring B is embedded and installed on the bottom of the installation baffle plate, and the other end of the restoring spring B is embedded and installed on the bottom of the installation stroke groove.

[0012] Further, a side loading groove is formed in the inner side of the trigger plate, and the bottom end of the push plate is in an inclined structure.

[0013] Further, a push plate is arranged in the interior of the side loading groove, and the push plate is generally in an L-shaped structure.

[0014] Further, one end of a restoring spring C is embedded and installed on the push plate, and the other end of the restoring spring C is embedded and installed on the bottom of the side loading groove; a synchronous connecting piece A is arranged between the two push plates.

[0015] Further, the trigger plate is provided with a synchronous connector B, and the synchronous connector B is in rectangular structure.

[0016] Further, the inner loading groove is provided with a lubricant container, and the lubricant container is in cylindrical structure.

[0017] Further, the lubricant container is provided with an external oil supplement hole in top, and the external oil supplement hole is in conical structure.

[0018] Further, the lubricant container is provided with an oil discharge pipe at inner end, and the oil discharge pipe is in the inside of the lubricant oil injection hole.

[0019] Further, the lubricant container is provided with an oil discharge pipe at inner end, and the oil discharge pipe is in the inside of the lubricant oil injection hole.

[0020] Further, the lubricant container is provided with an oil discharge pipe at inner end, and the oil discharge pipe is in the inside of the lubricant oil injection hole.

[0021] Further, the lubricant container is provided with an oil discharge pipe at inner end, and the oil discharge pipe is in the inside of the lubricant oil injection hole.

[0022] Further, the lubricant container is provided with an oil discharge pipe at inner end, and the oil discharge pipe is in the inside of the lubricant oil injection hole.

[0023] Beneficial effects

[0024] 1. When the control valve shaft cannot be twisted when the on-off ball valve body is in the flow state, the synchronous connector B is pressed by artificial, the trigger plate is driven to descend by the synchronous connector B, the inclined surface of the trigger plate bottom end pushes the inclined surface of the stress groove, the temporary sealing column and the sliding installation block are driven to move inwards along the sliding installation groove under the action of the inclined surface, the sealing pad in the temporary sealing column enters the flow hole of the on-off ball valve body, the temporary sealing of the flow hole is realized, the remedial effect is achieved when the on-off ball valve body cannot be rotated, and the effect of cutting off the flow is avoided when the water flow needs to be cut off.

[0025] 2、The trigger plate also drives the push plate to descend when the trigger plate descends, the inclined surface of the push plate pushes the inclined surface of the stress block, the stress block is forced to move the oil pushing slide rod and the oil pushing slide plate inward, the oil pushing slide plate pushes the lubricant inside the lubricant container, the lubricant enters the inside of the oil infiltration lubrication hole through the oil discharge pipe and the lubricant oil injection hole, thereby lubricating the control valve shaft, improving the rotatability of the control valve shaft, facilitating the control valve shaft to restore rotation, and enabling the control valve shaft to drive the on-off ball valve body to rotate to achieve water flow interception.

[0026] 3、When the control valve shaft is unable to rotate when the on-off ball valve body is in a non-flow state, the synchronous connecting piece A is pressed manually, the synchronous connecting piece A drives the push plate to descend, the inclined surface of the push plate pushes the inclined surface of the stress block, thereby indirectly completing the oil injection work, facilitating the control valve shaft to restore rotation, and facilitating the on-off ball valve body to be adjusted to a flow state.

[0027] 4、The lubrication work of the control valve shaft can be achieved in linkage when the temporary interception structure is triggered, and the two works are achieved in linkage, that is, the temporary flow interception demand can be met, the double-union ball valve body is prevented from continuously passing water, the performance of other works is affected, the control valve shaft is remedied when it is unable to rotate, the on-off ball valve body is facilitated to restore to the flow interception state. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0029] The drawings in the following description only relate to some embodiments of the present application, and are not a limitation on the present application.

[0030] In the drawings:

[0031] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0032] Figure 2 is a schematic diagram of the half-section structure of the double-union ball valve body of the embodiment of the present application.

[0033] Figure 3 is a schematic diagram of the enlarged structure of part A of the embodiment of the present application. Figure 2

[0034] Figure 4 is a schematic diagram of the half-section structure of the control valve shaft mounting seat of the embodiment of the present application.

[0035] Figure 5 is a schematic diagram of the enlarged structure of part B of the embodiment of the present application. Figure 4

[0036] ​​Figure 6 is a schematic view of a trigger plate and a switch ball valve body structure of an embodiment of the present application.

[0037] Figure 7 is a schematic view of a trigger plate and a switch ball valve body structure of an embodiment of the present application. Figure 6 is a schematic view of a trigger plate and a switch ball valve body structure of an embodiment of the present application.

[0038] Figure 8 is a schematic view of a trigger plate and a switch ball valve body structure of an embodiment of the present application.

[0039] List of reference signs

[0040] 1, double joint ball valve body; 101, control valve shaft mounting seat; 102, lubricant injection hole; 103, oil infiltration lubrication hole; 104, control valve shaft; 105, switch ball valve body; 106, sliding installation groove; 107, sliding installation block; 108, temporary sealing column; 109, recovery spring A; 1010, stress groove; 1011, installation stroke groove; 1012, trigger plate; 1013, installation baffle; 1014, recovery spring B; 1015, side loading groove; 1016, push plate; 1017, recovery spring C; 1018, synchronous connector A; 1019, synchronous connector B; 1020, internal loading groove; 1021, lubricant container; 1022, external oil supplementing hole; 1023, oil discharge pipe; 1024, oil pushing slide rod; 1025, oil pushing slide plate; 1026, stress block; 1027, recovery spring D; 2, joint. DETAILED DESCRIPTION

[0041] In order to make the purpose, scheme and advantages of the technical solutions of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the specific embodiments of the present application. Unless otherwise specified, the terms used herein have the meanings commonly used in the art. The same reference signs in the drawings represent the same components.

[0042] Embodiment: please refer to Figures 1 to 8 as shown:

[0043] The application provides a double-union ball valve, which comprises a double-union ball valve body 1, a union joint 2 arranged at the left and right ends of the double-union ball valve body 1, a control valve shaft mounting seat 101 arranged at the top center position of the double-union ball valve body 1, a lubricant injection hole 102 formed in the circumferential outer wall of the control valve shaft mounting seat 101, an oil infiltration lubrication hole 103 formed in the circumferential inner wall of the control valve shaft mounting seat 101, a control valve shaft 104 arranged in the control valve shaft mounting seat 101, a switch ball valve body 105 arranged at the bottom end of the control valve shaft 104, a flow-through hole formed in the switch ball valve body 105 and arranged in the double-union ball valve body 1, a sliding installation groove 106 formed in the circumferential inner wall of the double-union ball valve body 1 and in a T-shaped structure, a sliding installation block 107 arranged in the sliding installation groove 106 and in a T-shaped structure, a temporary sealing column 108 arranged at the inner end of the sliding installation block 107 and a sealing gasket arranged at the inner end of the temporary sealing column 108, and a control knob arranged at the top end of the control valve shaft 104, wherein when the protrusion on the control knob faces left and right, the switch ball valve body 105 is in a water passing state, and when the protrusion on the control knob faces forward and backward, the switch ball valve body 105 is in a water cutting state.

[0044] The control valve shaft 104 is manually rotated to drive the switch ball valve body 105 to rotate, so that the flow-through hole in the switch ball valve body 105 is communicated with the double-union ball valve body 1, and the double-union ball valve body 1 is in a water passing state; the control valve shaft 104 is rotated to drive the switch ball valve body 105 to rotate reversely, so that the switch ball valve body 105 seals the double-union ball valve body 1.

[0045] In another embodiment, an upper sliding roller can be arranged at the outer side of the sliding installation block 107, so that the friction between the sliding installation block 107 and the sliding installation groove 106 is reduced when the sliding installation block 107 moves, and the sliding installation block 107 moves more smoothly.

[0046] The inner side of the sliding installation block 107 is embeddedly installed with one end of the restoring spring A 109, and the other end of the restoring spring A 109 is embeddedly installed in the inner side of the sliding installation groove 106; the top of the sliding installation block 107 is provided with a stress groove 1010, and the bottom end of the stress groove 1010 is of an inclined structure; the top of the double-living ball valve body 1 is provided with installation stroke grooves 1011 on the left and right sides; the inside of the installation stroke grooves 1011 is provided with trigger plates 1012; the bottom end of the trigger plates 1012 is of an inclined structure; the inclined surface of the bottom end of the trigger plates 1012 is in contact with the inclined surface of the stress groove 1010; the front and back sides of the trigger plates 1012 are provided with installation baffle plates 1013, and the installation baffle plates 1013 are of a rectangular structure; the bottom of the installation baffle plates 1013 is embeddedly installed with one end of the restoring spring B 1014, and the other end of the restoring spring B 1014 is embeddedly installed in the bottom of the installation stroke grooves 1011;

[0047] By manually pressing the synchronous connecting piece B 1019, the trigger plates 1012 are driven to descend, the inclined surface of the bottom end of the trigger plates 1012 pushes the inclined surface of the stress groove 1010, the stress groove 1010 is pushed by the inclined surface and drives the temporary sealing column 108 and the sliding installation block 107 to move inward along the sliding installation groove 106, and the sealing gasket in the inner side of the temporary sealing column 108 enters the flow-through hole of the switch ball valve body 105, so that the flow-through hole is temporarily closed.

[0048] The inner side of the trigger plate 1012 is provided with a side loading groove 1015; the inside of the side loading groove 1015 is provided with a push plate 1016, and the push plate 1016 is generally in an L-shaped structure; the bottom end of the push plate 1016 is in an inclined structure; one end of a restoring spring C 1017 is embedded and installed on the push plate 1016, and the other end of the restoring spring C 1017 is embedded and installed at the bottom of the side loading groove 1015; a synchronous connecting piece A 1018 is arranged between the two push plates 1016; the two trigger plates 1012 are jointly provided with a synchronous connecting piece B 1019, and the synchronous connecting piece B 1019 is in a rectangular structure; the inside of the double-live ball valve body 1 is provided with an inner loading groove 1020; the inside of the inner loading groove 1020 is provided with a lubricant container 1021, and the lubricant container 1021 is generally in a cylindrical structure; the top of the lubricant container 1021 is provided with an external oil supplementing hole 1022, and the external oil supplementing hole 1022 is in a conical structure; the inner end of the lubricant container 1021 is provided with an oil discharge pipe 1023, and the oil discharge pipe 1023 is inside the lubricant oil injection hole 102; the outer side of the lubricant container 1021 is provided with an oil pushing sliding rod 1024, and the oil pushing sliding rod 1024 is in a cylindrical structure; the inner end of the oil pushing sliding rod 1024 is provided with an oil pushing sliding plate 1025, and the oil pushing sliding plate 1025 is inside the lubricant container 1021; the oil pushing sliding plate 1025 is in a disc-shaped structure; the outer end of the oil pushing sliding plate 1025 is provided with a force receiving block 1026, and the top end of the force receiving block 1026 is in an inclined structure; the inclined surface of the force receiving block 1026 is in contact with the inclined surface of the push plate 1016; one end of a restoring spring D 1027 is embedded and installed on the inner side of the force receiving block 1026, and the other end of the restoring spring D 1027 is embedded and installed on the outer side wall of the lubricant container 1021.

[0049] When the trigger plate 1012 descends, the trigger plate 1012 also drives the push plate 1016 to descend, the inclined surface of the push plate 1016 pushes the inclined surface of the force receiving block 1026, the force receiving block 1026 is forced to move the oil pushing sliding rod 1024 and the oil pushing sliding plate 1025 inward, the oil pushing sliding plate 1025 pushes the lubricant inside the lubricant container 1021, the lubricant enters the oil permeation lubricating hole 103 through the oil discharge pipe 1023 and the lubricant oil injection hole 102, thereby lubricating the control valve shaft 104, facilitating the rotation of the control valve shaft 104, and when the control valve shaft 104 is unable to rotate when the switch ball valve body 105 is in a non-flowing state, the synchronous connecting piece A 1018 is pressed by hand, the synchronous connecting piece A 1018 drives the push plate 1016 to descend, the inclined surface of the push plate 1016 pushes the inclined surface of the force receiving block 1026, thereby completing the oil injection work alone.

[0050] The specific use and role of the embodiment are as follows: in use, first, the double-union ball valve body 1 is connected with a suitable pipeline through the union joint 2, after installation, the control valve shaft 104 is manually rotated to drive the on-off ball valve body 105 to rotate, the flow-through hole on the on-off ball valve body 105 is communicated with the double-union ball valve body 1, the double-union ball valve body 1 is in a flow-through state, and the double-union ball valve body 1 is put into a use state, if the control valve shaft 104 cannot be twisted when the on-off ball valve body 105 is in a flow-through state, the synchronous connecting piece B 1019 is pressed manually, the trigger plate 1012 is driven to descend, the slope at the bottom end of the trigger plate 1012 pushes the slope of the stress groove 1010, the stress groove 1010 is driven to move inward along the sliding installation groove 106 under the action of the slope being pushed, the sealing gasket inside the temporary sealing column 108 enters the flow-through hole of the on-off ball valve body 105, temporary closure of the flow-through hole is realized, and when the trigger plate 1012 descends, the trigger plate 1012 also drives the push plate 1016 to descend, the slope of the push plate 1016 pushes the slope of the stress block 1026, the stress block 1026 is driven to move inward, the push oil sliding rod 1024 and the push oil sliding plate 1025, the push oil sliding plate 1025 pushes the lubricant inside the lubricant container 1021, the lubricant enters the oil infiltration lubrication hole 103 through the oil discharge pipe 1023 and the lubricant oil injection hole 102, and thus the control valve shaft 104 is lubricated, so that the control valve shaft 104 is restored to rotate, and when the control valve shaft 104 cannot be twisted when the on-off ball valve body 105 is in a non-flow-through state, the synchronous connecting piece A 1018 is pressed manually, the synchronous connecting piece A 1018 drives the push plate 1016 to descend, the inclined surface of the push plate 1016 pushes the slope of the stress block 1026, and thus the oil injection work is completed alone.

[0051] Finally, it should be noted that, in the description of the position of each component and the cooperation relationship therebetween, one pair of components is usually taken as an example, however, those skilled in the art should understand that such position and cooperation relationship are also applicable to other components or other pairs of components.

[0052] The above merely describes exemplary embodiments of the present application, but is not used to limit the protection scope of the present application, and the protection scope of the present application is defined by the appended claims.

Claims

1. A double-connector ball valve, characterized in that, include: A double-joint ball valve body (1) is provided with union joints (2) at both ends of the double-joint ball valve body (1); a control valve shaft mounting seat (101) is provided at the center of the top of the double-joint ball valve body (1); a lubricant injection hole (102) is provided on the outer circumference of the control valve shaft mounting seat (101); an oil seepage lubrication hole (103) is provided on the inner circumference of the control valve shaft mounting seat (101); a control valve shaft (104) is provided inside the control valve shaft mounting seat (101); and a switch ball valve is provided at the bottom end of the control valve shaft (104). Body (105); The switch ball valve body (105) is provided with a flow hole, and the switch ball valve body (105) is located inside the double-switching ball valve body (1); The inner circumferential wall of the double-switching ball valve body (1) is provided with a sliding mounting groove (106), and the sliding mounting groove (106) is a T-shaped structure; The sliding mounting groove (106) is provided with a sliding mounting block (107), and the sliding mounting block (107) is a T-shaped structure; The inner end of the sliding mounting block (107) is provided with a temporary sealing column (108), and the inner end of the temporary sealing column (108) is provided with a sealing gasket; One end of a restoring spring A (109) is embedded in the inner side of the sliding mounting block (107), and the other end of the restoring spring A (109) is embedded in the inner side of the sliding mounting groove (106); a force-bearing groove (1010) is provided on the top of the sliding mounting block (107), and the bottom end of the force-bearing groove (1010) is inclined; installation stroke grooves (1011) are provided on the left and right sides of the top of the double-joint ball valve body (1); the installation stroke A trigger plate (1012) is provided inside the groove (1011); the bottom end of the trigger plate (1012) is inclined; the inclined surface of the bottom end of the trigger plate (1012) is in close contact with the inclined surface of the force groove (1010); mounting baffles (1013) are provided on the front and rear sides of the trigger plate (1012), and the mounting baffles (1013) are rectangular; a restoring spring B (1014) is embedded in the bottom of the mounting baffle (1013). One end of the trigger plate (1012) is embedded in the bottom of the mounting stroke groove (1011), and the other end of the restoring spring B (1014) is embedded in the bottom of the mounting stroke groove (1011); a side loading groove (1015) is provided on the inner side of the trigger plate (1012); a push plate (1016) is provided inside the side loading groove (1015), and the push plate (1016) is generally L-shaped; the bottom end of the push plate (1016) is inclined; a restoring spring is embedded in the push plate (1016). One end of C (1017) and the other end of the restoring spring C (1017) are embedded in the bottom of the side loading groove (1015); a synchronous connector A (1018) is provided between the two push plates (1016); a synchronous connector B (1019) is provided on both trigger plates (1012), and the synchronous connector B (1019) is a rectangular structure; an inner loading groove (1020) is opened inside the double-joint ball valve body (1).

2. The double-joint ball valve as described in claim 1, characterized in that: The inner loading slot (1020) is provided with a lubricant container (1021), and the lubricant container (1021) is generally cylindrical; the top of the lubricant container (1021) is provided with an external oil replenishment hole (1022), and the external oil replenishment hole (1022) is conical.

3. The double-joint ball valve as described in claim 2, characterized in that: The lubricant container (1021) is provided with an oil drain pipe (1023) at its inner end, and the oil drain pipe (1023) is located inside the lubricant injection hole (102); the lubricant container (1021) is provided with an oil pusher (1024) on its outer side, and the oil pusher (1024) is a cylindrical structure.

4. The double-joint ball valve as described in claim 3, characterized in that: The inner end of the oil-pushing slide bar (1024) is provided with an oil-pushing slide plate (1025), and the oil-pushing slide plate (1025) is located inside the lubricant container (1021); the oil-pushing slide plate (1025) is a disc-shaped structure; the outer end of the oil-pushing slide plate (1025) is provided with a force-bearing block (1026), and the top of the force-bearing block (1026) is inclined; the inclined surface of the force-bearing block (1026) is in contact with the inclined surface of the push plate (1016); one end of the restoring spring D (1027) is embedded in the inner side of the force-bearing block (1026), and the other end of the restoring spring D (1027) is embedded in the outer wall of the lubricant container (1021).

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