CN209909227U

CN209909227U - Ball valve

Info

Publication number: CN209909227U
Application number: CN201920851877.XU
Authority: CN
Inventors: 李家德; 胡磊
Original assignee: Taizhou Aidi Xisheng Big Hvac Technology Co Ltd
Current assignee: Taizhou Aidi Xisheng Big Hvac Technology Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-01-07
Anticipated expiration: 2029-06-06

Abstract

The utility model provides a ball valve belongs to valve manufacturing technical field. It has solved current ball valve and has easily changed internals scheduling problem. This ball valve includes the valve body, the case, valve cap and valve rod, valve body and valve cap threaded connection, the case is located the valve body and the case sets up the liquid hole of crossing that link up, the inner and the case of valve rod link firmly mutually, the outer end of valve rod stretches out the valve body setting, case detachably is equipped with the liquid subassembly of crossing that is located in the liquid hole, the lateral part of valve body is equipped with the connecting hole that link up and the aperture of connecting hole is greater than the aperture of crossing the liquid hole, when the case is in the closed condition, the drill way of crossing the liquid hole sets up towards the connecting hole and crosses the orthographic projection of liquid hole to the connecting hole direction and is located the connecting hole, connecting hole threaded. The utility model has the advantages of compact structure, convenient loading and unloading, etc.

Description

Ball valve

Technical Field

The utility model belongs to the technical field of the valve is made, a ball valve is related to.

Background

The ball valve is the most common valve, realizes the function of opening and closing a medium passage by rotating the spherical valve core, is mainly responsible for the functions of cutting off, distributing and changing the flowing direction of the medium on a pipeline, and has a single structural function.

In view of the above-mentioned problems, a ball valve assembly has been devised and applied for patent [ application No.: 201520638864.6, respectively; authorization notice number: CN204922106U ], which comprises a valve body with a water inlet end and a water outlet end and a connecting pipe positioned outside the valve body, a ball core and a valve rod connected with the ball core are arranged in the valve body, a one-way mechanism which can make the connecting pipe conduct in one way is arranged in the connecting pipe, a cylindrical valve cap is arranged between the water outlet end and the connecting pipe, the inner end of the valve cap is screwed in the water outlet end, the outer end of the valve cap is screwed in the connecting pipe, a layer of anaerobic glue is coated at the joint of the water outlet end and the valve cap, an annular retaining shoulder is arranged on the outer side wall of the middle part of the valve cap, an annular groove is arranged on the outer side wall of the outer end of the valve cap, a sealing ring is arranged in the annular groove, the outer peripheral surface and the end surface of the sealing ring are respectively and tightly abutted against the inner wall of the connecting pipe and the annular retaining shoulder, the conducting direction of the one-way mechanism is the same as the flow direction of the fluid.

Foretell ball valve assembly passes through valve cap, connecting pipe and one-way mechanism's setting for the ball valve has the non return function, and the leakproofness is good, and work is comparatively stable, but overall structure is bulky, makes valve cap and connecting pipe firm in connection through anaerobic glue, and the structure can not be dismantled, can not maintain and change internals, and use cost is high.

Disclosure of Invention

The utility model aims at providing a compact structure, ball valve of convenient loading and unloading to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a ball valve, includes valve body, case, valve cap and valve rod, valve body and valve cap threaded connection, the case be located the valve body and the case seted up the liquid hole of crossing that link up, the inner and the case of valve rod link firmly mutually, the outer end of valve rod stretches out the valve body setting, a serial communication port, case detachably be equipped with the liquid subassembly of crossing that is located the liquid hole, the lateral part of valve body be equipped with the connecting hole that link up and the aperture of connecting hole be greater than the aperture of liquid hole, when the case is in the closed condition the drill way of crossing the liquid hole towards the connecting hole setting and cross the orthographic projection of liquid hole to the connecting hole direction and be located the connecting hole, connecting hole threaded connection have the connection lid of its shutoff.

The ball valve has the advantages that the liquid passing assembly is arranged in the liquid passing hole of the valve core, and a connecting pipe and a special valve cap in the past are omitted, so that the ball valve is compact in structure, small in overall size and convenient to install and arrange. During assembly, the valve core, the valve rod and the valve cap can be assembled, then the liquid passing assembly is installed into the valve core from the connecting hole, and finally the connecting cover is plugged in the connecting hole, so that the installation is convenient; when needing to dismantle or change the liquid subassembly, make the case be in the closed condition, later loosen and connect the lid, take out the liquid subassembly from crossing the liquid hole, after that will repair or the liquid subassembly of crossing after changing is packed into from the connecting hole and is crossed the liquid hole, makes again to connect the lid shutoff in the connecting hole, and the maintenance of crossing the liquid subassembly like this or change convenience has prolonged life, has reduced use cost.

In the above ball valve, the inner wall of the orifice at one end of the liquid through hole is provided with a radially protruding stop shoulder, and when the valve core is in a closed state, the stop shoulder is arranged away from the connecting hole. Keep off the shoulder and play limiting displacement, improved the structure steadiness after the installation of liquid subassembly, when the case was closed, the liquid hole of crossing does not have the drill way that keeps off the shoulder and is close to in the connecting hole setting, avoids keeping off the shoulder and interferes the loading and unloading of liquid subassembly.

In the ball valve, the connecting cover is embedded with a sealing ring sealed on the inner wall of the connecting hole. The sealing ring ensures the sealing performance between the connecting cover and the connecting hole and avoids leakage.

In the above ball valve, the liquid passing assembly is a check valve core, and the conduction direction of the check valve core is consistent with the fluid flow direction. The check valve core plays a check role and avoids fluid backflow.

In the above ball valve, the check valve element includes a valve sleeve, a valve seat, a guide cylinder and a plugging member, the valve sleeve is cylindrical and is inserted into the liquid passing hole in an interference fit manner, one end of the valve sleeve abuts against the shoulder and the end of the valve sleeve is in a necking shape, so that the inner wall is a conical surface, the valve seat is buckled at the other end of the valve sleeve, the guide cylinder is cylindrical and is coaxial with the valve seat, the outer wall of the guide cylinder is provided with a plurality of circumferentially and uniformly distributed connecting ribs and the connecting ribs are connected with the inner wall of the valve seat into a whole, the plugging member is cylindrical and is inserted into the guide cylinder in a sliding fit manner, the outer end of the plugging member is provided with a radially protruding plugging head, the plugging member is externally sleeved with a spring, and the spring provides elasticity so that the plugging head keeps the trend of sealing in the conical surface.

In the ball valve, the blocking head is embedded with a first O-shaped ring sealed on the conical surface, and the valve sleeve is externally embedded with a second O-shaped ring sealed on the inner wall of the liquid passing hole. Thus, the sealing performance is good.

In the above ball valve, the valve seat has a cylindrical portion inserted into the valve cover, the outer wall of the cylindrical portion has a groove, and the valve housing has a convex ring embedded in the groove. The cylindrical part plays a supporting role, so that the valve seat and the valve sleeve are conveniently buckled together, and the check valve core is conveniently and integrally assembled.

As another aspect, in an aforesaid ball valve, the liquid passing assembly include the overcoat that is the tube-shape, overcoat interference fit ground peg graft in passing the liquid hole and the overcoat has radial inside to turn over and contradict in the turn-ups that keeps off the shoulder, overcoat lock joint have the endotheca, the endotheca include outer lane and inside dog, the outer lane link together with inside dog through the connecting block of a plurality of circumference equipartitions, inside dog be cylindric and the outer wall have the liquid groove of crossing of multichannel circumference equipartition. Fluid flows through the cistern from passing between overcoat and the endotheca, plays the effect that reduces fluid flow, and when the user demand changed, the setting of lid and connecting hole was connected to the accessible, will have the liquid subassembly of passing who subtracts the flow effect and take out, changes the liquid subassembly of passing that has of different sizes again and subtract the flow effect, convenient operation.

In the ball valve, the outer ring is provided with a circle of convex part protruding radially, the outer sleeve is provided with an annular groove for embedding the convex part, and an O-shaped ring III is arranged between the outer sleeve and the inner stop block. The O-shaped ring III ensures the sealing property between the inner stop block and the outer sleeve, so that the fluid can only flow through the liquid passing groove, and the flow precision is ensured.

Compared with the prior art, the ball valve is compact in structure, small in overall size, convenient to install and arrange, convenient to assemble and disassemble and convenient to replace according to the use environment and the use requirement, convenient to operate and capable of reducing the use cost.

Drawings

Fig. 1 is an exploded sectional view of the ball valve in embodiment 1.

Fig. 2 is a structural sectional view of the ball valve in the closed state of the valve element in embodiment 1.

Fig. 3 is a structural sectional view of the ball valve in the open state of the valve core in embodiment 1.

Fig. 4 is an exploded sectional view of the ball valve in embodiment 2.

Fig. 5 is a structural sectional view of the ball valve in the closed state of the valve core in embodiment 2.

Fig. 6 is a structural sectional view of the ball valve in the open state of the valve core in embodiment 2.

Fig. 7 is a schematic structural view of the inner sleeve of the ball valve in embodiment 2.

In the figure, 1, a valve body; 11. connecting holes; 2. a valve core; 21. a liquid passing hole; 22. a shoulder block; 3. a bonnet; 4. a valve stem; 5. a connecting cover; 6. a seal ring; 7. a check valve core; 71. a valve housing; 711. a conical surface; 712. an O-shaped ring II; 713. a convex ring; 72. a valve seat; 721. a cylindrical portion; 73. a guide cylinder; 74. a blocking member; 741. plugging a plug; 742. a first O-shaped ring; 75. a connecting rib; 76. a spring; 8. a jacket; 81. flanging; 9. an inner sleeve; 91. an outer ring; 911. a projection; 92. an inner stop block; 921. a liquid passing groove; 93. connecting blocks; 94. and an O-shaped ring III.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, this ball valve includes valve body 1, case 2, valve cap 3 and valve rod 4,

valve body

1 and 3 threaded connection of valve cap, case 2 is located in valve body 1 and case 2 sets up the through liquid hole 21, the inner of valve rod 4 links firmly with case 2 mutually, the outer end of valve rod 4 stretches out valve body 1 and sets up, case 2 detachably is equipped with the liquid subassembly that crosses that is located in liquid hole 21, the lateral part of valve body 1 is equipped with through connecting hole 11 and the aperture of connecting hole 11 is greater than the aperture of liquid hole 21, when case 2 is in the closed condition, the drill way of crossing liquid hole 21 sets up towards connecting hole 11 and crosses the orthographic projection of liquid hole 21 to connecting hole 11 direction and is located connecting hole 11, connecting hole 11 threaded connection has the connection lid 5 of its shutoff.

To be more detailed, for limiting, the inner wall of the orifice at one end of the liquid passing hole 21 is provided with a radially protruding stop shoulder 22, and when the valve core 2 is in a closed state, the stop shoulder 22 is far away from the connecting hole 11; for good sealing performance, the connecting cover 5 is embedded with a sealing ring 6 which is sealed on the inner wall of the connecting hole 11.

The liquid passing component in this embodiment is a check valve element 7, the conducting direction of the check valve element 7 is consistent with the flow direction of the fluid, the check valve element 7 comprises a valve sleeve 71, a valve seat 72, a guide cylinder 73 and a blocking piece 74, the valve sleeve 71 is cylindrical, the valve sleeve 71 is inserted into the liquid passing hole 21 in an interference fit manner, one end of the valve sleeve 71 is abutted against the retaining shoulder 22, the end of the valve sleeve 71 is in a necking shape, so that the inner wall is in a conical surface 711, the valve seat 72 is buckled at the other end of the valve sleeve 71, the guide cylinder 73 is in a cylindrical shape and is coaxially arranged with the valve seat 72, the outer wall of the guide cylinder 73 is provided with four connecting ribs 75 which are uniformly distributed in the circumferential direction, the connecting ribs 75 are connected with the inner wall of the valve seat 72 into a whole, the blocking piece 74 is in a cylindrical shape and is inserted into the guide cylinder 73 in a sliding fit, the outer end of the blocking member 74 has a radially protruding blocking head 741. the blocking member 74 houses a spring 76. the spring 76 provides a spring force such that the blocking head 741 tends to maintain a seal with the tapered surface 711.

For good sealing performance, the blocking head 741 is embedded with a first O-ring 742 sealed on the conical surface 711, and the valve sleeve 71 is externally embedded with a second O-ring 712 sealed on the inner wall of the liquid passing hole 21; for the convenience of assembly, the valve seat 72 has a cylindrical portion 721 having a cylindrical shape and inserted into the valve cover, the outer wall of the cylindrical portion 721 has a groove, and the valve housing 71 has a bead 713 fitted into the groove.

Example two

As shown in fig. 4, 5, 6 and 7, the structure and principle of the present embodiment are substantially the same as those of embodiment 1, and there is a difference that in the present embodiment, the liquid passing assembly includes a cylindrical outer sleeve 8, the outer sleeve 8 is inserted into the liquid passing hole 21 in an interference fit manner, the outer sleeve 8 has a flange 81 which is turned radially inward and abuts against the shoulder 22, the outer sleeve 8 is fastened with an inner sleeve 9, the inner sleeve 9 includes an outer ring 91 and an inner stop 92, the outer ring 91 is connected with the inner stop 92 into a whole through four circumferentially uniformly distributed connecting blocks 93, the inner stop 92 is cylindrical, the outer wall has a plurality of circumferentially uniformly distributed liquid passing grooves 921, the outer ring 91 has a radially protruding protrusion 911, the outer sleeve 8 has an annular groove for embedding the protrusion 911, and an O-ring tri94 is arranged between the outer sleeve 8 and the inner stop 92.

Fluid flows through the fluid groove 921 between the outer sleeve 8 and the inner sleeve 9, the function of reducing the fluid flow is achieved, when the use requirement changes, the valve core 2 is closed, the connecting cover 5 is opened, the fluid passing assembly with the flow reducing function in the fluid passing hole 21 is taken out through the connecting hole 11, the fluid passing assembly with the flow reducing function in different sizes is replaced later (the fluid groove 921 at the inner stop block 92 is different in size so as to change the flow), and then the connecting cover 5 is enabled to block the connecting hole 11 again, so that the operation is convenient.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a ball valve, includes valve body (1), case (2), valve cap (3) and valve rod (4), valve body (1) and valve cap (3) threaded connection, case (2) be located valve body (1) and case (2) set up through liquid hole (21), the inner of valve rod (4) link firmly with case (2) mutually, the outer end of valve rod (4) stretches out valve body (1) and sets up, its characterized in that, case (2) detachably be equipped with be located the liquid subassembly of crossing in liquid hole (21), the lateral part of valve body (1) be equipped with connecting hole (11) that link up and the aperture of connecting hole (11) is greater than the aperture of liquid hole (21), when case (2) are in the closed condition the drill way of crossing liquid hole (21) set up towards connecting hole (11) and cross the orthographic projection of liquid hole (21) to connecting hole (11) direction and be located connecting hole (11), the connecting hole (11) is in threaded connection with a connecting cover (5) for plugging the connecting hole.

2. A ball valve according to claim 1, characterized in that the inner wall of the opening at one end of the liquid through hole (21) is provided with a radially protruding stop shoulder (22), and the stop shoulder (22) is arranged away from the connecting hole (11) when the spool (2) is in the closed state.

3. A ball valve according to claim 2, wherein the connection cap (5) is fitted with a packing (6) which is sealed against the inner wall of the connection hole (11).

4. A ball valve according to claim 3, characterized in that the liquid passing component is a check valve core (7), and the conducting direction of the check valve core (7) is consistent with the fluid flow direction.

5. A ball valve according to claim 4, wherein the check valve core (7) comprises a valve sleeve (71), a valve seat (72), a guide cylinder (73) and a blocking piece (74), the valve sleeve (71) is cylindrical, the valve sleeve (71) is inserted into the liquid through hole (21) in an interference fit manner, one end of the valve sleeve (71) is abutted against the stop shoulder (22) and the end of the valve sleeve (71) is in a necking shape, so that the inner wall of the valve sleeve (71) is in a tapered surface (711), the valve seat (72) is fastened to the other end of the valve sleeve (71), the guide cylinder (73) is cylindrical and is coaxially arranged with the valve seat (72), the outer wall of the guide cylinder (73) is provided with a plurality of connecting ribs (75) uniformly distributed in the circumferential direction and the connecting ribs (75) are integrally connected with the inner wall of the valve seat (72), the blocking piece (74) is cylindrical and is inserted into the guide cylinder (73) in a sliding fit manner, and the outer end of the blocking piece (74) is provided with a blocking plug (741) protruding in, the outer sleeve (8) of the plugging piece (74) is provided with a spring (76), and the spring (76) provides elasticity so that the plugging head (741) tends to keep sealed on the conical surface (711).

6. A ball valve according to claim 5, wherein the blocking head (741) is embedded with a first O-ring (742) sealed with the tapered surface (711), and the valve sleeve (71) is externally embedded with a second O-ring (712) sealed with the inner wall of the liquid passing hole (21).

7. A ball valve in accordance with claim 6 wherein the valve seat (72) has a cylindrical portion (721) having a cylindrical shape and inserted into the valve cover, the outer wall of the cylindrical portion (721) has a groove, and the valve housing (71) has a bead (713) fitted into the groove.

8. The ball valve according to claim 3, wherein the liquid passing assembly comprises a cylindrical outer sleeve (8), the outer sleeve (8) is inserted into the liquid passing hole (21) in an interference fit manner, the outer sleeve (8) is provided with a flange (81) which is radially inwards folded and abutted against the blocking shoulder (22), the outer sleeve (8) is buckled with an inner sleeve (9), the inner sleeve (9) comprises an outer ring (91) and an inner stop block (92), the outer ring (91) is connected with the inner stop block (92) into a whole through a plurality of connecting blocks (93) which are circumferentially and uniformly distributed, and the inner stop block (92) is cylindrical and has a plurality of liquid passing grooves (921) which are circumferentially and uniformly distributed on the outer wall.

9. A ball valve according to claim 8, wherein the outer ring (91) has a radially projecting protrusion (911), the outer sleeve (8) has an annular groove into which the protrusion (911) is fitted, and an O-ring (94) is provided between the outer sleeve (8) and the inner stop (92).