CN115095669A - Regulating valve - Google Patents

Regulating valve Download PDF

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Publication number
CN115095669A
CN115095669A CN202210882745.XA CN202210882745A CN115095669A CN 115095669 A CN115095669 A CN 115095669A CN 202210882745 A CN202210882745 A CN 202210882745A CN 115095669 A CN115095669 A CN 115095669A
Authority
CN
China
Prior art keywords
valve
rod
rotating shaft
hemispherical
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210882745.XA
Other languages
Chinese (zh)
Inventor
王隆桦
胡凯
廖钟敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Shimu Hardware Co ltd
Original Assignee
Chengdu Shimu Hardware Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Shimu Hardware Co ltd filed Critical Chengdu Shimu Hardware Co ltd
Priority to CN202210882745.XA priority Critical patent/CN115095669A/en
Publication of CN115095669A publication Critical patent/CN115095669A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • F16K1/465—Attachment of sealing rings to the valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members

Abstract

The invention belongs to the technical field of pipeline valves and discloses a regulating valve which comprises a valve body, a valve sleeve, a rotating shaft, two hemispherical valve cores and a replacing rod, wherein the valve sleeve is arranged on the valve body; the valve body is provided with an inlet and an outlet, the valve sleeve is movably connected with the valve body, and one end of the valve sleeve is used as a sealing end and is positioned between the inlet and the outlet in the valve body; the rotating shaft is positioned at the sealing end and is rotationally connected with the valve sleeve along the horizontal direction, and one end of the rotating shaft extends out of the valve sleeve; the replacing rod is movably connected with the valve body, and one end of the replacing rod extends into the valve body and can be connected with one end of the rotating shaft, which extends out of the valve sleeve, so as to drive the rotating shaft to rotate relative to the valve sleeve; the two hemispherical valve cores are identical in shape, are respectively positioned on two sides of the rotating shaft and form a complete spherical body, can rotate along with the rotating shaft and can reciprocate along with the valve sleeve, wherein the hemispherical valve core close to the sealing end forms contact seal with the sealing end, and extends out of the sealing end to form contact seal with the valve body. The regulating valve can be used for quickly and simply replacing the valve core on line.

Description

Regulating valve
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to a regulating valve.
Background
The regulating valve is a device for controlling medium flow of fluid on a conveying pipeline, is an execution unit in an industrial automatic control system, is an indispensable component in a regulating system, is an important link for forming the industrial automatic system, and can be divided into a cutting-off mode and a regulating mode according to functions of the regulating valve.
At present, when a regulating valve is used for regulating the medium flow in a system, the following problems generally exist:
1. when the regulating valve is used for regulating the medium flow, a valve core of the regulating valve is subjected to medium scouring for a long time, so that the valve core is eroded and often damaged, the regulating valve needs to be maintained frequently in order to avoid the failure of the regulating valve, the valve core needs to be replaced when the valve core is damaged, but the regulating valve needs to be detached from a pipeline when the valve core is replaced, then the regulating valve is detached and the valve core is taken out for replacement, and the replacing mode has the disadvantages of complex steps, high labor consumption, system work stopping and system work delay;
2. when the valve core of the regulating valve is replaced, the distance between the valve core and the valve seat cannot be ensured, so that the regulating valve needs to be adjusted again after replacement, the process is troublesome, time is consumed, and a certain experience of a worker is required;
3. at present, some regulating valves capable of realizing online maintenance do not need to be disassembled when the online maintenance is carried out, but pipelines on two sides of the regulating valve need to be closed, the regulating valve cannot work in the maintenance process, real online maintenance cannot be still realized, and the problem that the work process of a system is delayed still exists.
Disclosure of Invention
In view of the above, the present invention discloses a regulating valve to overcome or at least partially solve the above problems.
The regulating valve comprises a valve body, a valve sleeve, a rotating shaft, two hemispherical valve cores and a replacing rod; the valve body is provided with an inlet and an outlet, the valve sleeve is movably connected with the valve body, and one end of the valve sleeve is used as a sealing end and is positioned between the inlet and the outlet in the valve body; the rotating shaft is positioned at the sealing end and is rotationally connected with the valve sleeve along the horizontal direction, and one end of the rotating shaft extends out of the valve sleeve; the replacing rod is movably connected with the valve body, one end of the replacing rod extends into the valve body and can be connected with one end of the rotating shaft, which extends out of the valve sleeve, so as to drive the rotating shaft to rotate relative to the valve sleeve; the two hemispherical valve cores are identical in shape and are respectively positioned on two sides of the rotating shaft to form a complete spherical body, and can rotate along with the rotating shaft and reciprocate along with the valve sleeve, wherein the hemispherical valve core positioned close to the sealing end forms contact seal with the sealing end, and extends out of the sealing end to form contact seal with the valve body.
Preferably, the sealing end of the valve sleeve adopts a closing-in design, and the part of the rotating shaft, which is positioned in the valve sleeve, is provided with two guide rods and two pre-tightening springs; the two guide rods are arranged on two sides of the rotating shaft along the axial direction of the valve sleeve and are respectively in sliding connection with the two hemispherical valve cores, and the pre-tightening spring is positioned between the guide rods and the hemispherical valve cores so as to drive the hemispherical valve cores to move towards the direction far away from the rotating shaft; and a push rod is arranged in the valve sleeve, one end of the push rod is connected with the valve sleeve, and the other end of the push rod is in sliding butt joint with the hemispherical valve core far away from the sealing end, so that the hemispherical valve core moves towards the direction close to the rotating shaft.
Preferably, the ejector rod is in threaded connection with the valve sleeve.
Preferably, a magnet is arranged at one end, in contact with the hemispherical valve core, of the ejector rod, and the hemispherical valve core is made of magnetic metal.
Preferably, the guide rod is a square rod, and the hemispherical valve core is provided with a square hole corresponding to the guide rod.
Preferably, the adjusting valve further comprises an adjusting rod, the adjusting rod is arranged along the axial direction of the valve sleeve, one end of the adjusting rod is connected with the valve body, and the other end of the adjusting rod is connected with the valve sleeve so as to drive the valve sleeve to perform reciprocating linear movement relative to the valve body.
Preferably, the adjusting rod is a screw rod; one end of the adjusting rod is in sliding connection with the valve body in a relative rotation mode, and the other end of the adjusting rod is in threaded connection with the valve sleeve.
Preferably, one end of the rotating shaft, which is positioned outside the valve sleeve, is provided with a rotating wheel, and the replacing rod can be connected with the rotating wheel to drive the rotating wheel to rotate.
Preferably, the rotating wheel is provided with a ratchet wheel, and the end part of the replacing rod is provided with a one-way push plate and a push plate spring; the one-way push plate is rotationally connected with the replacing rod, and the push plate spring is positioned between the replacing rod and the one-way push plate so as to drive the one-way push plate to rotate upwards to keep a fixed position with the replacing rod; when the replacing rod moves downwards, the push plate spring drives the one-way push plate to be located at a fixed position so as to form contact with the ratchet wheel and drive the ratchet wheel to rotate; when the replacing rod moves upwards, the one-way push plate overcomes the push plate spring to rotate and slide over the ratchet wheel, and the ratchet wheel is kept fixed.
Preferably, the regulating valve is also provided with a spring piece, the rotating wheel is also provided with a limiting section, and the outer circumferential surface of the limiting section is provided with a limiting straight edge; the spring piece is arranged on the valve sleeve along the vertical direction and can be in contact with the limiting straight edge of the limiting section in a fitting mode so as to limit the rotation of the rotating wheel.
The regulating valve has the following beneficial technical effects:
1. in the invention, the valve sleeve is arranged in the valve body, the rotating shaft and the two hemispherical valve cores which are positioned on the rotating shaft and can form a complete sphere are arranged in the valve sleeve, and the rotating shaft is used for driving the two hemispherical valve cores to rotate to switch positions, so that the positions of the two hemispherical valve cores in the valve sleeve can be switched under the condition that the position of the valve sleeve in the valve body is kept unchanged and the two hemispherical valve cores keep the complete sphere, thereby replacing the hemispherical valve cores for controlling the fluid channel in the valve body, realizing the online replacement of the valve cores under the condition of not influencing the flow control and changing the flow, and being simple and rapid in replacement operation.
2. In the invention, the hemispherical valve core positioned at the sealing end in the valve sleeve is in contact sealing with the valve sleeve, so that the position of the valve sleeve in the valve body can be changed by utilizing the adjusting rod between the valve body and the valve sleeve, the hemispherical valve core is driven to synchronously move to change the flow area of a fluid channel between the inlet and the outlet, and the flow is adjusted by the adjusting valve.
3. According to the invention, the guide rod in the form of the square rod is arranged on the rotating shaft, and the corresponding square hole is arranged on the hemispherical valve core, so that the hemispherical valve core does not rotate relative to the rotating shaft, the installation is convenient, the relative rotation around the guide rod between the hemispherical valve core and the valve sleeve is avoided, and the sealing effect and the connection stability are improved.
4. According to the invention, the ratchet wheel and the limiting section are arranged at the end part of the rotating shaft, the one-way push plate and the half-pushing spring are arranged at the end part of the replacing rod, and the spring piece is arranged at the limiting section, so that the ratchet wheel can be driven to rotate in one way by utilizing the reciprocating driving of the replacing rod along the vertical direction, the rotating shaft is driven to realize the switching of the positions of the two hemispherical valve cores, and the simple and quick replacing operation of the valve cores is realized.
Drawings
FIG. 1 is a schematic cross-sectional view of a regulator valve according to the present embodiment;
FIG. 2 is a schematic view of the structure in the direction A-A in FIG. 1;
FIG. 3 is a schematic view of the structure in the direction B-B in FIG. 1;
FIG. 4 is a schematic view of the structure in the direction C-C in FIG. 1;
fig. 5 is a schematic structural view of a valve sleeve of the regulating valve in the embodiment.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 5, the control valve of the present embodiment includes a valve body 1, a valve housing 2, a rotary shaft 3, a first hemispherical valve element 41, a second hemispherical valve element 42, and a replacement lever 5.
The valve body 1 adopts a split structure and consists of a body and a valve cover, and the body is provided with an inlet 6 and an outlet 7. The valve sleeve 2 is movably connected with the valve cover part in the valve body 1 in a way of relatively sliding along the vertical direction, and the lower end of the valve sleeve 2 is used as a sealing end and is positioned between an inlet 6 and an outlet 7 in the valve body 1. The shaft 3 is located at the sealed end and is rotatably connected to the valve housing 2 in a horizontal direction, while one end of the shaft 3 extends out of the valve housing 2. The replacing rod 5 forms a movable connection with the valve body 1 in a relative sliding manner along the vertical direction, and the lower end extending into the valve body 1 can be connected with one end of the rotating shaft 3 extending out of the valve sleeve 2 so as to drive the rotating shaft 3 to rotate relative to the valve sleeve 2. The first hemispherical valve core 41 and the second hemispherical valve core 42 have the same shape and are respectively located at two sides of the rotating shaft 3 and form a complete spherical body, and can rotate inside the valve sleeve 2 along with the rotation of the rotating shaft 3 and can reciprocate relative to the valve body 1 along with the valve sleeve 2. Wherein the second hemispherical core 42 located near the sealing end forms a contact seal with the sealing end of the housing 2 via the seal 8 and the protruding sealing end is capable of forming a contact seal with the valve body 1 to shut off and control the flow area of the fluid passage between the inlet 6 and the outlet 7.
Preferably, in this embodiment, the sealing end of the valve housing 2 is of a closed design to form a seating seal against the second hemispherical valve core 42. Meanwhile, the part of the rotating shaft 3, which is located in the valve housing 2, is provided with a first guide rod 91 and a second guide rod 92, and the two guide rods are arranged on two sides of the rotating shaft 3 along the axial direction of the valve housing 2 and are respectively in sliding connection with the two hemispherical valve cores, that is, the two hemispherical valve cores are respectively sleeved on the two guide rods. A first preload spring 101 is provided between the first guide rod 91 and the first hemispherical valve core 41, and a second preload spring 102 is provided between the second guide rod 92 and the second hemispherical valve core 42, wherein the second preload spring 102 can drive the second hemispherical valve core 42 to move away from the rotating shaft 3, that is, downward as shown in fig. 1, so that the second hemispherical valve core 42 is maintained in a contact sealing state with the sealing member 8. An ejector rod 11 is further arranged in the valve housing 2, the upper end of the ejector rod 11 is connected with the valve housing 2, the lower end of the ejector rod 11 is in sliding abutting connection with the first hemispherical valve core 41, the first hemispherical valve core 41 overcomes the acting force of the first pre-tightening spring 101 and moves towards the direction close to the rotating shaft 3, and therefore the first hemispherical valve core 41 and the second hemispherical valve core 42 form a complete sphere.
Preferably, in this embodiment, the stem 11 is screwed with the valve housing 2. Therefore, the ejector rod and the valve sleeve can be detachably connected, so that the hemispherical valve core above the rotating shaft can be conveniently disassembled and assembled.
Further, in the present embodiment, the lower end of the carrier rod 11 adopts a circular arc structure to increase the contact area with the first half ball valve core 41. A magnet 12 is arranged at the lower end of the ejector rod 11, and the first hemispherical valve core 41 and the second hemispherical valve core 42 are both made of magnetic metal, such as iron hemispherical valve cores. At the moment, the first hemispherical valve core can be conveniently taken out of the valve sleeve and accurately placed into the valve sleeve by utilizing the magnetic adsorption force formed by the magnet on the first hemispherical valve core, and the convenience of replacing the hemispherical valve core is improved.
In addition, in the present embodiment, each of the first guide rod 91 and the second guide rod 92 is a square rod, that is, a rod-shaped structure having a square cross section, and the first hemispherical valve core 41 and the second hemispherical valve core 42 are also provided with corresponding square holes therein, respectively. Therefore, the hemispherical valve core can be prevented from rotating around the guide rod by utilizing the sliding fit of the square rod and the square hole, namely, the second hemispherical valve core is prevented from rotating relative to the sealing piece and the valve body, so that the contact sealing effect between the hemispherical valve core and the valve body and the sealing effect between the hemispherical valve core and the valve sleeve are improved.
As shown in fig. 1, an adjusting lever 13 is further provided in the adjusting valve of the present embodiment. The adjusting rod 13 is disposed along the axial direction of the valve housing 2, and has one end connected to the valve body 1 and the other end connected to the valve housing 2 to drive the valve housing 2 to perform a reciprocating linear movement with respect to the valve body 1. Therefore, the valve sleeve can drive the second hemispherical valve core to reciprocate in the valve body so as to change the shielding of the second hemispherical valve core on a channel between the inlet and the outlet and realize the flow regulation of the regulating valve on a flowing medium.
Preferably, in this embodiment, the adjusting rod is a screw, and the lower end of the adjusting rod is slidably connected to the valve body in a relatively rotatable manner, and the upper end of the adjusting rod is in threaded connection with the valve housing. Therefore, the valve sleeve can be adjusted in a reciprocating mode relative to the valve body by rotating the adjusting rod in a reciprocating mode, and the effect of accurately adjusting the flow is achieved.
Referring to fig. 1 and 3, a rotating wheel 14 is disposed at one end of the rotating shaft 3 outside the valve housing 2 in this embodiment, and meanwhile, the lower end of the replacing rod 5 extends into the valve housing 1 and can be connected with the rotating wheel 14 to drive the rotating wheel 14 to rotate, thereby driving the rotating shaft 3 to rotate, further enabling the first hemispherical valve core 41 and the second hemispherical valve core 42 to rotate along with the rotating shaft 3 inside the valve housing 2, and performing position switching, that is, switching to the first hemispherical valve core 41 to form contact sealing with the sealing member 8 at the sealing end, and rotating the second hemispherical valve core 42 to a position in contact with the ejector rod 11, and then detaching the replaced second hemispherical valve core 42 through the ejector rod 11 without affecting the normal work of the first hemispherical valve core 41, thereby completing online replacement of the valve core by the regulating valve.
In the present embodiment, a ratchet 141 is provided at one end of the runner 14, and a one-way push plate 15 and a push plate spring 16 are provided at the lower end of the replacement lever 5. Wherein the one-way push plate 15 is rotatably connected with the replacing rod 5, and the push plate spring 16 is positioned between the replacing rod 5 and the one-way push plate 15 to drive the one-way push plate 15 to rotate upwards to keep a fixed position with the replacing rod 5, namely the position shown in fig. 3.
At this time, when the exchange rod 5 moves downward, the push plate spring 16 drives the one-way push plate 15 to be located at the fixed position so as to be in contact with the ratchet wheel 141 and drive the ratchet wheel 141 to rotate, thereby driving the rotating shaft 3 to rotate; when the replacement rod 5 moves upwards, the one-way push plate 15 contacts with the ratchet 141 and rotates against the acting force of the push plate spring 16, so that the ratchet 141 slides over the ratchet 141 and is kept fixed, and thus, by performing reciprocating movement in the vertical direction on the replacement rod 5, one-way rotation of the rotating shaft 3 can be realized, and further, position switching of the two hemispherical valve cores can be realized.
Further, as shown in fig. 4, in the regulating valve of the present embodiment, two spring strips 17 are further provided, and the other end of the rotating wheel 14 is provided with a limiting section 142, and four limiting straight edges along the circumferential direction are provided on the outer circumferential surface of the limiting section 142, that is, the limiting section 142 is a square structure. The two spring pieces 17 are vertically arranged on the valve housing 2 and can be brought into abutting contact with two opposite straight restricting edges of the restricting section 142. At the moment, the rotation limitation of the rotating wheel can be formed by utilizing the contact matching of the spring piece and the limiting section, so that when the rod is replaced and moves downwards, the ratchet wheel is driven by utilizing the one-way push plate to drive the limiting section to overcome the spring piece, and the rotating of the rotating shaft can be realized.
Furthermore, as shown in fig. 1 and 3 in conjunction, a replacement spring 18 is provided between the replacement rod 5 and the valve body 1 to drive the replacement rod 5 to move upward. Therefore, the upward driving force can be formed on the replacement rod by utilizing the replacement spring, the upward moving and resetting speed of the replacement rod is increased, and the efficiency of replacing the valve core is improved.
In the embodiment, the rotating wheel adopts a combined structure form of ratchet wheels uniformly distributed with four ratchets and limiting sections uniformly distributed with four limiting straight edges, so that the replacing rod can drive the rotating shaft to rotate for 90 degrees once, and the position replacement of the two hemispherical valve cores can be completed by driving twice. Of course, in other embodiments, the rotating wheel may also adopt an external gear structure, and the replacing rod adopts a rack structure, and the rack drives the external gear to rotate back and forth by utilizing the meshing of the rack and the external gear, at this time, the position replacement of the two hemispherical valve cores can be completed in one-way movement process of the rack.
Referring to fig. 1 to 5, the operation of the regulating valve of the present embodiment is as follows:
fig. 1 shows that the regulating valve of this embodiment is in a closed state, that is, the regulating rod 13 drives the valve sleeve 2 to move to a position where the second hemispherical valve core 42 keeps contact with the valve body 1, at this time, the inlet 6 and the outlet 7 are in a disconnected state, the replacing rod 5 is kept away from the runner 14 under the action of the replacing spring 18, the rotating shaft 3 is kept in a fixed position state under the cooperation of the two spring pieces 17 and the limiting section 142, and the ejector rod 11 is in a position where the ejector rod is in sliding abutment against the first hemispherical valve core 41, so that the first hemispherical valve core 41 and the second hemispherical valve core 42 are kept in a state of forming a complete sphere.
When the flow passing through the regulating valve needs to be regulated, the regulating rod 13 is rotated to drive the valve sleeve 2 to move in the vertical direction relative to the valve body 1, and then the second hemispherical valve core 42 is driven to move relative to the valve body 1, so that the flow area of a channel between the inlet 6 and the outlet 7 is changed, and the flow passing through the regulating valve is regulated.
When the valve core needs to be replaced, namely the positions of the first hemispherical valve core 41 and the second hemispherical valve core 42 are switched, firstly, the replacing rod 5 is pressed to overcome the replacing spring 18 to drive the one-way push plate 15 to move towards the direction close to the ratchet wheel 141, and when the one-way push plate 15 is contacted with the ratchet wheel 141 and continuously moves downwards, the limiting section 142 overcomes the acting force of the spring piece 17 to enable the ratchet wheel 141 to rotate for 90 degrees, namely the rotating shaft 3 is driven to drive the two hemispherical valve cores to rotate for 90 degrees; then, the pressing on the replacing rod 5 is released, the replacing rod 5 is driven to move upwards under the action of the restoring force of the replacing spring 18, and when the one-way push plate 15 is contacted with the ratchet wheel 141, on one hand, the one-way push plate 15 overcomes the push plate spring 16 to rotate, and on the other hand, the spring piece 17 is contacted with the limiting straight edge in the limiting section 142 in an attaching mode to form the rotation limiting on the ratchet wheel 141, so that the one-way push plate 15 slides over the ratchet wheel 141 and the ratchet wheel 141 is kept still; then, the replacement lever 5 is pressed again, so that the ratchet wheel 141 rotates 90 ° again, that is, the rotation shaft 3 drives the two hemispherical valve elements to rotate 90 ° again, thereby completing the position replacement of the first hemispherical valve element 41 and the second hemispherical valve element 42, and the first hemispherical valve element 41 is switched to form a contact seal with the sealing element 8 and control of the flow area of the fluid passage between the inlet 6 and the outlet 7, in the process, the valve sleeve 2 is kept in the same position and does not affect the flow rate through the regulating valve.
Then, by using the magnetic adhesion connection between the magnet 12 in the plunger 11 and the second hemispherical valve core 42, the second hemispherical valve core 42 can be taken out of the valve housing 2 through the plunger 11, and the second hemispherical valve core 42 is replaced and maintained and then placed into the valve housing 2 again for subsequent replacement with the first hemispherical valve core 41 again.

Claims (10)

1. A regulating valve is characterized by comprising a valve body, a valve sleeve, a rotating shaft, two hemispherical valve cores and a replacing rod; the valve body is provided with an inlet and an outlet, the valve sleeve is movably connected with the valve body, and one end of the valve sleeve is used as a sealing end and is positioned between the inlet and the outlet in the valve body; the rotating shaft is positioned at the sealing end and is rotationally connected with the valve sleeve along the horizontal direction, and one end of the rotating shaft extends out of the valve sleeve; the replacing rod is movably connected with the valve body, one end of the replacing rod extends into the valve body and can be connected with one end of the rotating shaft, which extends out of the valve sleeve, so as to drive the rotating shaft to rotate relative to the valve sleeve; the two hemispherical valve cores are identical in shape and are respectively positioned on two sides of the rotating shaft to form a complete spherical body, and can rotate along with the rotating shaft and reciprocate along with the valve sleeve, wherein the hemispherical valve core positioned close to the sealing end forms contact seal with the sealing end, and extends out of the sealing end to form contact seal with the valve body.
2. The regulating valve of claim 1, wherein the sealing end of the valve housing is of a closed design, and two guide rods and two pre-tightening springs are arranged on the part of the rotating shaft, which is positioned in the valve housing; the two guide rods are arranged on two sides of the rotating shaft along the axial direction of the valve sleeve and are respectively in sliding connection with the two hemispherical valve cores, and the pre-tightening spring is positioned between the guide rods and the hemispherical valve cores so as to drive the hemispherical valve cores to move towards the direction far away from the rotating shaft; and a push rod is arranged in the valve sleeve, one end of the push rod is connected with the valve sleeve, and the other end of the push rod is in sliding butt joint with the hemispherical valve core far away from the sealing end, so that the hemispherical valve core moves towards the direction close to the rotating shaft.
3. The regulator valve of claim 2 wherein said stem is threadably connected to said housing.
4. The regulating valve according to claim 3, wherein a magnet is arranged at one end of the ejector rod, which is in contact with the hemispherical valve core, and the hemispherical valve core is made of magnetic metal.
5. The regulating valve according to claim 2, wherein the guide rod is a square rod, and the hemispherical valve core is provided with a square hole corresponding to the guide rod.
6. The regulating valve in accordance with claim 1 further comprising an adjustment rod disposed axially of said valve housing and connected at one end to said valve body and at the other end to said valve housing for driving said valve housing in reciprocating linear movement relative to said valve body.
7. The regulating valve of claim 6, wherein the regulating rod is a screw; one end of the adjusting rod is in sliding connection with the valve body in a relative rotation mode, and the other end of the adjusting rod is in threaded connection with the valve sleeve.
8. The regulating valve in accordance with claim 1, wherein a rotating wheel is provided at an end of the shaft outside the valve housing, and the changing rod is connectable to the rotating wheel to drive the rotating wheel to rotate.
9. The regulating valve according to claim 8, wherein the rotating wheel is provided with a ratchet wheel, and the end part of the replacing rod is provided with a one-way push plate and a push plate spring; the one-way push plate is rotationally connected with the replacing rod, and the push plate spring is positioned between the replacing rod and the one-way push plate so as to drive the one-way push plate to rotate upwards to a position where the one-way push plate is kept at a fixed position with the replacing rod;
when the replacement rod moves downwards, the push plate spring drives the one-way push plate to be located at a fixed position so as to form contact with the ratchet wheel and drive the ratchet wheel to rotate; when the replacing rod moves upwards, the one-way push plate overcomes the push plate spring to rotate and slide over the ratchet wheel, and the ratchet wheel is kept fixed.
10. The regulating valve according to claim 9, wherein the regulating valve is further provided with a spring plate, the rotating wheel is further provided with a limiting section, and the outer circumferential surface of the limiting section is provided with a limiting straight edge; the spring piece is arranged on the valve sleeve along the vertical direction and can be in contact with the limiting straight edge of the limiting section in a fitting mode so as to limit the rotation of the rotating wheel.
CN202210882745.XA 2022-07-26 2022-07-26 Regulating valve Pending CN115095669A (en)

Priority Applications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024067661A1 (en) * 2022-09-29 2024-04-04 沈阳耐蚀合金泵股份有限公司 Longitudinally-rotating valve clack shielding valve capable of being updated online without disassembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024067661A1 (en) * 2022-09-29 2024-04-04 沈阳耐蚀合金泵股份有限公司 Longitudinally-rotating valve clack shielding valve capable of being updated online without disassembly

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