CN109780268B - Rotary valve capable of switching pressure measuring points - Google Patents
Rotary valve capable of switching pressure measuring points Download PDFInfo
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- CN109780268B CN109780268B CN201910138520.1A CN201910138520A CN109780268B CN 109780268 B CN109780268 B CN 109780268B CN 201910138520 A CN201910138520 A CN 201910138520A CN 109780268 B CN109780268 B CN 109780268B
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- 238000009530 blood pressure measurement Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The invention relates to a switchable pressure point rotary valve, comprising: the valve body is internally provided with a containing cavity along the axial direction, and is provided with a pressure measuring hole A and at least two oil inlet holes A which are communicated with the containing cavity; the valve core is rotationally connected in the accommodating cavity, the inner surface of the accommodating cavity is in clearance seal fit with the outer surface of the valve core, the valve core is provided with a connecting channel which can selectively enable a pressure measuring hole A on the valve body to be communicated with or disconnected from any one oil inlet hole A when the valve core rotates, and one end of the valve core penetrates out of the accommodating cavity to form a knob end so as to drive the valve core to rotate.
Description
Technical Field
The invention relates to a rotary valve with a switchable pressure measuring point.
Background
Currently, in continuous miner applications, several multiple valves are often required to control the corresponding actions. If the number of the multi-way valves is too large, according to the prior use mode, a pressure gauge is required to be connected to each multi-way valve to measure the pressure. But this approach presents difficulties and problems during actual use. Such as: on one hand, the space for installing the display panel of the hydraulic meter of the console is limited, and if the number of the hydraulic meters is too large, the hydraulic meter cannot be installed; on the other hand, when the number of the pressure gauges is too large, interference can be generated when an operator reads the pressure values, so that the operator cannot timely and accurately hold the related pressure information, and finally, the pressure gauges are too large, so that the purchasing cost of the pressure gauges and the use and maintenance difficulty of the later-stage pressure gauges are increased, and therefore, a device for measuring the pipeline needing pressure measurement by using one pressure measuring meter is needed.
Disclosure of Invention
The invention mainly aims to provide a rotary valve with switchable pressure measuring points, which can reduce the use cost and save the installation space, and the pressure meter is connected with a plurality of oil inlet pipe installation holes B through one pressure meter on the pressure meter installation hole A of the rotary valve, and a connecting channel on a valve core can be communicated with any one oil inlet hole A needing pressure measurement through rotating a valve core by a knob, so that the pressure meter can respectively measure multiple paths of oil pressure, and the problems in the prior art are solved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a switchable pressure point rotary valve, comprising:
the valve body is internally provided with a containing cavity along the axial direction, and is provided with a pressure measuring hole A and at least two oil inlet holes A which are communicated with the containing cavity;
The valve core is rotationally connected in the accommodating cavity, the inner surface of the accommodating cavity is in clearance seal fit with the outer surface of the valve core, the valve core is provided with a connecting channel which can selectively enable a pressure measuring hole A on the valve body to be communicated with or disconnected from any one oil inlet hole A when the valve core rotates, and one end of the valve core penetrates out of the accommodating cavity to form a knob end so as to drive the valve core to rotate.
Further, the distance between the axial direction of the center of the pressure measuring hole A and the center of the adjacent oil inlet hole A is larger than the sum of the radius of the pressure measuring hole A and the radius of the oil inlet hole A, the distance between the radial sections of the oil inlet holes A with the centers positioned in different radial sections is larger than the diameter of the oil inlet hole A, and the axial projections of any two oil inlet holes A are separated.
Further, the connection channel includes:
The connecting cavity is axially arranged in the valve core;
The rotary valve core comprises at least one oil inlet B, wherein the oil inlet B is communicated with or disconnected from an oil inlet A, the oil inlet B is communicated with a connecting cavity along the radial direction, the number of the oil inlet B is the same as the number of radial sections of the center of the oil inlet A, and the oil inlet B is arranged towards the same direction and the center of the oil inlet B is positioned on the same axial section;
The pressure measuring ring groove is formed in the outer wall of the valve core along the circumferential surface and is communicated with the pressure measuring hole A, and the pressure measuring ring groove is communicated with the connecting cavity through the pressure measuring hole B.
Further, the two ends of the valve core are also provided with a drain ring groove A and a drain ring groove B, the drain ring groove A and the drain ring groove B are communicated through a connecting hole C, and an oil drain hole communicated with the accommodating cavity is further formed in the valve body at the position of the drain ring groove B.
Further, a pressure measuring meter mounting hole A communicated with the pressure measuring hole A, an oil inlet pipe mounting hole B communicated with the oil inlet hole A and an oil drain pipe mounting hole C communicated with the oil drain hole are arranged on the outer wall of the valve body.
Further, a sealing ring A is arranged at the outer edge of the oil inlet hole A positioned at the side of the accommodating cavity.
Further, the rotary valve further comprises:
The top cover is fixedly connected to the valve body at the top of the accommodating cavity, the valve core is provided with an extension rod A at the top cover end, the diameter of the extension rod A is smaller than that of the valve core, and the extension rod A passes through a through hole A formed in the top cover to form a knob end;
the bottom cover is fixedly connected to the valve body at the bottom of the accommodating cavity, the valve core is provided with an extension rod B at the bottom cover end, the diameter of the extension rod B is smaller than that of the valve core, the extension rod B penetrates through a through hole B formed in the bottom cover, and the lower end face is flush with the lower end face of the bottom cover.
Further, a plurality of positioning holes A are formed in the top cover, the centers of the positioning holes A are located on a circle taking the center of the through hole A as the center of a circle, the positioning holes A correspond to the positions of the oil inlet holes A one by one, and a knob is fixedly sleeved on the knob end.
Further, the label of sign locating hole A is fixed with to the top cap surface, be equipped with a locating hole B that sets up with locating hole A position assorted towards the top cap side in the knob, be equipped with the spring in the locating hole B, spring one end supports tightly locating hole B inner wall, and the other end supports tightly a location steel ball and is located locating hole A to lock rotation position.
Further, the positioning hole A is a conical hole.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
1. The invention relates to a switchable pressure point rotary valve, comprising:
The valve comprises a valve body and a valve core, wherein an accommodating cavity is axially arranged in the valve body, the valve core is rotationally connected in the accommodating cavity, and the valve body is provided with a pressure measuring hole A and at least two oil inlet holes A which are communicated with the accommodating cavity; the inner surface of the accommodating cavity is in clearance seal fit with the outer surface of the valve core, the valve core is provided with a connecting channel which can selectively enable a pressure measuring hole A on the valve body to be communicated with or disconnected from any one of oil inlet holes A when the valve core rotates, one end of the valve core penetrates out of the accommodating cavity to form a knob end so as to drive the valve core to rotate, an oil inlet pipe needing pressure measurement is communicated with the oil inlet hole A, the pressure measuring end of a pressure measuring meter is communicated with the pressure measuring hole A, the rotation of the valve core can be realized by rotating the knob end, the pressure measuring meter is communicated with any one of the oil inlet pipes needing pressure measurement by utilizing the connecting channel on the valve core, and thus the pressure measuring meter can measure the pressure of a plurality of oil ways.
2. According to the invention, the distance between the axial directions of the centers of the pressure measuring holes A and the centers of the adjacent oil inlet holes A is larger than the sum of the radius of the pressure measuring holes A and the radius of the oil inlet holes A, the distance between the radial sections of the oil inlet holes A with the centers positioned at different radial sections is larger than the diameter of the oil inlet holes A, and the axial projections of any two oil inlet holes A are separated, so that the staggered arrangement between the pressure measuring holes A and the oil inlet holes A is ensured, and the oil inlet holes A and the pressure measuring holes A are ensured to have no influence on each other.
3. According to the invention, the connecting channel is arranged as the connecting cavity, the at least one oil inlet B and the pressure measuring ring groove, and the oil inlet B is communicated with the connecting cavity, so that the to-be-measured oil in the oil inlet A communicated with the oil inlet B can be led into the connecting cavity, the connecting cavity is communicated with the pressure measuring ring groove, the to-be-measured oil in the connecting cavity is led out of the pressure measuring ring groove and enters the pressure measuring hole A communicated with the pressure measuring ring groove, the pressure measuring meter is used for measuring pressure, the pressure measuring ring groove is arranged so that the to-be-measured oil in the pressure measuring ring groove can always enter the pressure measuring hole A no matter how the valve core rotates, the quantity of the oil inlet B is equal to the quantity of the radial sections of the centers of the oil inlet A, only one oil inlet B can be communicated with the oil inlet A on the same section, and when the oil inlet B faces the same side and the centers are positioned on the same axial section, only one oil inlet B can be communicated with one oil inlet A.
4. According to the invention, the oil drain ring grooves A and B are arranged at two ends of the valve core, the oil drain ring grooves A and B are communicated through the connecting hole C, and the valve body at the position of the oil drain ring groove B is also provided with the oil drain hole communicated with the accommodating cavity, so that oil leakage generated in the valve body can be accumulated in the oil drain ring grooves A and B and returned to the oil tank from the oil drain hole.
5. The invention is convenient for the installation of an oil pipe and a pressure gauge, the outer wall of a valve body is provided with a pressure gauge installation hole A communicated with the pressure gauge hole A, an oil inlet pipe installation hole B communicated with the oil inlet hole A and an oil drain pipe installation hole C communicated with the oil drain hole, and in order to better limit, the diameter of the pressure gauge installation hole A is larger than that of the pressure gauge hole A, the diameter of the oil inlet pipe installation hole B is larger than that of the oil inlet hole A, and the diameter of the oil drain pipe installation hole C is larger than that of the oil drain hole.
6. The sealing ring A is arranged at the outer edge of the oil inlet hole A at the side of the accommodating cavity, and is arranged in the groove matched with the oil inlet hole A on the inner wall of the accommodating cavity, so that the oil inlet hole A can be better sealed.
7. The rotary valve also comprises a top cover and a bottom cover, wherein the top cover and the bottom cover are respectively provided with two ends of the accommodating cavity, the rotary valve is convenient to disassemble and assemble, and the extension rod A and the extension rod B are respectively arranged at two ends of the valve core, so that the extension rod A penetrates through the through hole A on the top cover A to form a knob end, the valve core can be rotated to realize pressure measurement, and the extension rod B penetrates through the through hole B on the bottom cover, so that the stability of the valve core during rotation is ensured.
8. The oil pressure measuring device is characterized in that a plurality of positioning holes A are formed in the top cover, the centers of the positioning holes A are located on a circle taking the center of the through hole A as the center of a circle, the positioning holes A correspond to the oil inlet holes A one by one, and the oil pressure of which oil inlet hole is measured is determined by arranging the positioning holes.
9. According to the invention, the positions of the oil inlet holes are marked by the labels with the marking positioning holes A fixed on the outer surface of the top cover, the positioning holes B matched with the positions of the positioning holes A are arranged in the knob towards the side of the top cover, and the springs in the compressed state are arranged in the positioning holes B, one ends of the springs are abutted against the inner walls of the positioning holes B, and the other ends of the springs are abutted against the positioning steel balls positioned in the positioning holes A, so that the rotating positions are locked.
10. The positioning hole A is a conical hole, and the conical hole can facilitate the positioning steel ball to slide out of the positioning hole A.
Drawings
FIG. 1 is a schematic cross-sectional view of a rotary valve;
FIG. 2 is a schematic cross-sectional view of a valve body;
FIG. 3 is a schematic view of a cross-sectional structure of a valve body A-A;
FIG. 4 is a schematic view of a cross-sectional structure of a valve body B-B;
FIG. 5 is a schematic cross-sectional view of a valve core;
FIG. 6 is a schematic view of a cross-sectional structure of a valve core A-A;
FIG. 7 is a schematic view of a cross-sectional structure of a valve core B-B;
FIG. 8 is a schematic view of a cross-sectional structure of the valve core C-C;
FIG. 9 is a schematic cross-sectional view of a top cover;
FIG. 10 is a schematic cross-sectional view of the bottom cover;
fig. 11 is a schematic sectional structure of a knob.
Icon: valve body-10, holding cavity 101, pressure measuring hole A102, oil inlet hole A103, oil drain hole-104, pressure measuring meter mounting hole A-105, oil inlet pipe mounting hole B-106, oil drain pipe mounting hole C-107, sealing ring A-108, valve core 11, knob end-111, connecting cavity-112, oil inlet hole B-113, pressure measuring ring groove-114, pressure measuring hole B-115, oil drain ring groove A-116, oil drain ring groove B-117, extending rod A-118, extending rod B-119, top cover-12, through hole A-121, retainer ring A-122, sealing ring A-123, positioning hole A-124, bottom cover-13, through hole B-131, retainer ring B-132, sealing ring B-133, knob-14, positioning hole B-141, spring-142, positioning steel ball-143, and label 15.
Detailed Description
According to the embodiment of the application, the use cost can be reduced, the installation space is saved, the pressure gauge is arranged on the pressure gauge installation hole A of the rotary valve, the oil inlet pipes are connected to the plurality of oil inlet pipe installation holes B, the connecting channel on the valve core can be communicated with any oil inlet hole A needing pressure measurement through rotating the valve core by the knob, and the pressure gauge is disconnected with other oil inlet holes A needing pressure measurement, so that the pressure gauge can respectively measure multiple paths of oil pressure, and the problem in the prior art is solved.
In order to better understand the above technical solutions, the following detailed description will be made with reference to the accompanying drawings and specific embodiments, and it should be understood that specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and not limit the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
As shown in fig. 1 to 11, a switchable pressure point rotary valve is characterized by comprising: the valve comprises a valve body 10 and a valve core 11, wherein an accommodating cavity 101 is axially arranged in the valve body 10, and a pressure measuring hole A102 and at least two oil inlet holes A103 which are communicated with the accommodating cavity 101 are formed in the valve body 10; the valve core 11 is rotatably connected in the accommodating cavity 101, the inner surface of the accommodating cavity 101 is in clearance seal fit with the outer surface of the valve core 11, the valve core 11 is provided with a connecting channel which can selectively connect or disconnect the pressure measuring hole A102 and any oil inlet hole A103 on the valve body 10 when the valve core 11 rotates, and one end of the valve core 11 penetrates out of the accommodating cavity 101 to form a knob end 111 so as to drive the valve core 11 to rotate.
Specifically, a cylindrical accommodating cavity 101 is arranged in the valve body 1, a cylindrical valve core 11 is rotationally connected in the accommodating cavity 101, the inner surface of the accommodating cavity 101 is in clearance seal fit with the outer surface of the valve core 11, the clearance is generally 0.01-0.15 mm (taking the diameter of the inner circle of the valve body as a reference, the clearance between the inner circle and the outer circle of the valve core is ensured to be within the range of 0.01-0.015mm by matching with the outer circle of the fine grinding valve core), one end of the valve core 11 extends out of the accommodating cavity 101 to form a knob end 111, the valve core 11 is rotationally connected in the accommodating cavity 101, and a pressure measuring hole A102 and at least two oil inlet holes A103 which are communicated with the accommodating cavity 101 are formed in the valve body 1; the valve core 11 is provided with a connecting channel, when the valve core 11 rotates under the drive of the knob end 111, the connecting channel can selectively enable the pressure measuring hole A102 on the valve body 1 to be communicated with or disconnected from any one of the oil inlet holes A103, an oil inlet pipe needing pressure measurement is communicated with the oil inlet hole A103, and the pressure measuring end of one pressure measuring meter is communicated with the pressure measuring hole A102, so that the purpose that one pressure measuring meter can measure pressure on a plurality of oil ways is achieved.
Further, in order to reduce the influence of the pressure measuring hole A102 and the oil inlet hole A103 during pressure measuring, the distance between the axial directions of the center of the pressure measuring hole A102 and the centers of the adjacent oil inlet holes A103 is larger than the sum of the radius of the pressure measuring hole A102 and the radius of the oil inlet hole A103, the distance between the radial sections of the oil inlet holes A103 with the centers positioned at different radial sections is larger than the diameter of the oil inlet hole A103, the axial projections of any two oil inlet holes A103 are separated, and the oil inlet holes A103 positioned on the same radial section are uniformly distributed on the valve body 1.
Further, the connection channel includes: the connecting cavity 112, at least one oil inlet B113 and a pressure measuring ring groove 114, wherein the connecting cavity 112 is axially arranged in the valve core 11, the oil inlet B113 is matched with the oil inlet A103 in position and has the same diameter, the oil inlet B113 is radially communicated with the connecting cavity 112, the number of the oil inlets B113 is the same as the number of the radial sections of the centers of the oil inlets A103, the oil inlets B113 are arranged towards the same side and are positioned on the same axial section, so as to ensure that one oil inlet B113 can be communicated or disconnected with the oil inlet A103 which is positioned on the same radial section when the valve core 11 rotates,
The pressure measuring ring groove 114 is formed in the outer wall of the valve core 11 along the circumferential surface, the pressure measuring ring groove 114 is matched with the pressure measuring hole A102 in position, the width of the pressure measuring ring groove 114 is equal to or slightly larger than the diameter of the pressure measuring hole A102, the center of the pressure measuring ring groove 114 and the center of the pressure measuring hole A102 are positioned in the same radial section, and the pressure measuring ring groove 114 is communicated with the connecting cavity 112 through the pressure measuring hole B115, so that the pressure measuring ring groove 114 can be always communicated with the pressure measuring hole A102 no matter how the valve core 11 rotates.
Further, since there is a leakage oil in the gap between the valve core 11 and the accommodating cavity 101, in order to enable the leakage oil to be collected and recycled, a leakage oil groove a116 and a leakage oil groove B117 are further provided at two ends of the valve core 11, the leakage oil groove a116 is communicated with the leakage oil groove a116 and the leakage oil groove B117 through a connection hole C (in order to facilitate manufacturing of the leakage oil groove a116 and the leakage oil groove B117, a cross through hole is provided on a section where the two cross through holes are located, the two cross through holes are communicated through a communication hole C, the communication hole C is a through hole which is generally provided along an axial direction of the valve core for facilitating processing, plugs are used at two ends, plugs are not shown in the figure), and a leakage hole 104 which is communicated with the accommodating cavity 101 is further provided on the valve body 10 at the position of the leakage oil groove B117, thereby ensuring that the leakage oil can flow out from the leakage oil hole 104.
Further, in order to install the oil inlet pipe, the oil drain pipe and the pressure gauge conveniently, a pressure gauge mounting hole A105 communicated with the pressure gauge hole A102, an oil inlet pipe mounting hole B106 communicated with the oil inlet hole A103 and an oil drain pipe mounting hole C107 communicated with the oil drain hole 104 are arranged on the outer wall of the valve body 10, the diameter of the pressure gauge mounting hole A105 is larger than that of the pressure gauge hole A102, the oil inlet pipe mounting hole B106 is larger than that of the oil inlet hole A103, the oil inlet pipe mounting hole A106 and the oil drain pipe mounting hole B106 are coaxially arranged, and the diameter of the oil drain pipe mounting hole C107 is larger than that of the oil drain hole 104.
Further, in order to reduce the mutual influence of pressure measurement between the oil inlet holes A103, a sealing ring A108 is arranged at the outer edge of the oil inlet hole A103 positioned at the side of the accommodating cavity 101, so that better sealing between the inner surface of the accommodating cavity 101 and the outer surface of the valve core 11 can be ensured through the sealing ring A108 when the oil inlet hole A103 is communicated with the oil inlet hole B113.
Further, in order to make the rotary valve convenient to disassemble and assemble, the rotary valve body can be cylindrical, the accommodating cavity 101 is set as a through cavity, the rotary valve is installed at the top of the rotary valve and further comprises a top cover 12 and a bottom cover 13 installed at the bottom of the rotary valve, the top cover 12 is fixedly connected to the valve body at the top of the accommodating cavity 101 through bolts, the valve core 11 is positioned at the end of the top cover 12 and is provided with an extension rod A118, the diameter of the extension rod A118 is smaller than that of the valve core 11, the top cover 12 is provided with a through hole A121 with the diameter matched with that of the extension rod A118, the extension rod A118 penetrates through the through hole A to form a knob end 111, a retainer ring A122 is arranged between the valve core 11 and the inner surface of the top cover 12, and a sealing ring A123 is arranged between the contact surface of the extension rod A118 and the through hole A121; the bottom cover 13 is fixedly connected to the valve body at the bottom of the accommodating cavity 101 through bolts, the valve core 11 is provided with an extension rod B119 at the end of the bottom cover 13, the diameter of the extension rod B119 is smaller than that of the valve core 11, the bottom cover 13 is provided with a through hole B131 with the diameter matched with that of the extension rod B119, the extension rod B119 penetrates through the through hole B131 and is flush with the outer surface of the bottom cover 13 at the free end, a check ring B132 is arranged between the valve core 11 and the inner surface of the bottom cover 13, a sealing ring B133 is arranged between the contact surfaces of the extension rod B119 and the through hole B131 (wherein the check ring A122 and the check ring B132 are made of polytetrafluoroethylene materials, friction is reduced during rotation, rotation smoothness between the valve body and the valve core can be guaranteed), the sealing ring A123 and the sealing ring B133 can be used for further preventing oil leakage in the rotary valve, in order to facilitate manufacturing of a connecting cavity in the valve core 11, during use, a plug (not visible in the figure) is used for punching a hole on the end surface of the valve body, and an O-shaped sealing ring is generally arranged on the contact surface of the top cover and the contact surface of the valve body 10.
Further, a plurality of positioning holes A124 are formed in the top cover 12, the centers of the positioning holes A124 are located on a circle taking the center of the through hole A121 as the center of the circle, the positioning holes A124 correspond to the positions of the oil inlet holes A103 one by one, so that when an operator rotates the valve core, the oil inlet holes B113 on the connecting channel are guaranteed to be aligned with the oil inlet holes A103, and through the fact that the knob end 111 is sleeved with the knob 14 and then connected through bolts, anti-skidding patterns can be used on the knob 14, and the operation of the operator is facilitated.
Further, through the sign 15 of sign locating hole A124 is fixed with at top cap 12 surface screw, make things convenient for operating personnel to confirm the oil feed pipeline of present pressure measurement, through be equipped with one in the knob 14 towards top cap 12 side with locating hole A124 position assorted setting's locating hole B141, be equipped with spring 142 in the locating hole B141, the tight locating hole B141 inner wall is supported to spring 142 one end, and the other end supports tightly a steel ball 143 in locating hole A124 to lock the rotation position, can set up an indicating needle on the knob simultaneously, with the oil feed pipeline of instruction connecting channel intercommunication.
Further, the positioning hole a124 is a tapered hole, so as to facilitate the sliding of the positioning steel ball 143.
When the rotary valve is used, the rotary valve is used for communicating each oil inlet pipe to be measured with the oil inlet pipe mounting hole B106 according to the requirement, then the pressure measuring meter is mounted on the pressure measuring meter mounting hole A105, the corresponding oil inlet pipe is marked on the nameplate 15 according to the requirement on the oil drain pipe mounting hole C107, and the knob is rotated, so that the communicating channel on the valve core 11 is communicated with the pressure measuring hole A102 and the oil inlet hole A103 to be measured, and the oil pressure of the oil inlet pipe can be read.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A switchable pressure point rotary valve, comprising: the valve comprises a valve body (10), wherein an accommodating cavity (101) is axially arranged in the valve body (10), and one pressure measuring hole A (102) and at least two oil inlet holes A (103) which are communicated with the accommodating cavity (101) are formed in the valve body (10); the valve core (11), valve core (11) rotate connect in holding chamber (101), the interior surface of holding chamber (101) and the surface clearance seal cooperation of valve core (11), valve core (11) have the connecting channel that makes pressure measurement hole A (102) and arbitrary inlet port A (103) on valve body (10) be linked together or disconnected when it rotates, valve core (11) one end wear out holding chamber (101) forms knob end (111) to drive valve core (11) rotation, pressure measurement hole A (102) center and the axial of its adjacent inlet port A (103) center between be greater than pressure measurement hole A (102) radius and inlet port A (103) radius sum, the distance between the radial cross-section that the inlet port A (103) that the center is located different radial cross-section is greater than inlet port A (103) diameter, the axial projection of arbitrary two inlet ports A (103) separates, the connecting channel includes: the rotary valve comprises a connecting cavity (112), at least one oil inlet B (113), rotary valve cores (11), and a plurality of oil inlets B (113), wherein the connecting cavity (112) is axially arranged in the valve cores (11), the oil inlets B (113) are communicated with or disconnected from the oil inlets A (103), the oil inlets B (113) are radially communicated with the connecting cavity (112), the number of the oil inlets B (113) is the same as the number of radial sections of the centers of the oil inlets A (103), and the oil inlets B (113) are arranged in the same direction and are positioned on the same axial section; pressure measurement annular (114), pressure measurement annular (114) are seted up along the circumference and are located case (11) outer wall, pressure measurement annular (114) with pressure measurement hole A (102) intercommunication, pressure measurement annular (114) are through pressure measurement hole B (115) and connection chamber (112) intercommunication, are located the inlet port A (103) outer fringe of holding chamber (101) side and install sealing washer A (108), the rotary valve still includes: the top cover (12), the top cover (12) is fixedly connected to the valve body at the top of the accommodating cavity (101), the valve core (11) is provided with an extension rod A (118) at the end of the top cover (12), the diameter of the extension rod A (118) is smaller than that of the valve core (11), and the extension rod A (118) penetrates through a through hole A formed in the top cover (12) to form a knob end (111); the rotary valve comprises a bottom cover (13), wherein the bottom cover (13) is fixedly connected to a valve body at the bottom of a containing cavity (101), an extension rod B (119) is arranged at the end of the bottom cover (13), the diameter of the extension rod B (119) is smaller than that of the valve core (11), the extension rod B (119) penetrates through a through hole B (131) formed in the bottom cover (13), the lower end face is flush with the lower end face of the bottom cover (13), a plurality of positioning holes A (124) are formed in the top cover (12), the centers of the positioning holes A (124) are located on a circle taking the center of the through hole A (121) as the center of a circle, the positioning holes A (124) correspond to the positions of the oil inlet holes A (103) one by one, and a knob (14) is fixedly sleeved on the knob end (111).
2. The switchable pressure measuring point rotary valve according to claim 1, wherein two ends of the valve core (11) are further provided with a drain ring groove a (116) and a drain ring groove B (117), the drain ring groove a (116) and the drain ring groove B (117) are communicated through a connecting hole C, and a drain hole (104) communicated with the accommodating cavity (101) is further formed in the valve body (10) at the drain ring groove B (117).
3. The switchable pressure tap rotary valve according to claim 1, wherein the outer wall of the valve body (10) is provided with a pressure gauge mounting hole a (105) communicated with the pressure tap a (102), an oil inlet pipe mounting hole B (106) communicated with the oil inlet hole a (103), and an oil drain pipe mounting hole C (107) communicated with the oil drain hole (104).
4. The switchable pressure measuring point rotary valve according to claim 1, wherein the label (15) for marking the positioning hole a (124) is fixed on the outer surface of the top cover (12), a positioning hole B (141) arranged in a position matching with the positioning hole a (124) is arranged in the knob (14) towards the top cover (12), a spring (142) is arranged in the positioning hole B (141), one end of the spring (142) abuts against the inner wall of the positioning hole B (141), and the other end abuts against a positioning steel ball (143) in the positioning hole a (124), so that the rotating position is locked.
5. The switchable pressure point rotary valve of claim 4 wherein the pilot hole a (124) is a tapered hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138520.1A CN109780268B (en) | 2019-02-25 | 2019-02-25 | Rotary valve capable of switching pressure measuring points |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138520.1A CN109780268B (en) | 2019-02-25 | 2019-02-25 | Rotary valve capable of switching pressure measuring points |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109780268A CN109780268A (en) | 2019-05-21 |
| CN109780268B true CN109780268B (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910138520.1A Active CN109780268B (en) | 2019-02-25 | 2019-02-25 | Rotary valve capable of switching pressure measuring points |
Country Status (1)
| Country | Link |
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| CN (1) | CN109780268B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110553081B (en) * | 2019-09-29 | 2024-07-05 | 上海羿弓氢能科技有限公司 | Hydraulic reversing valve and hydraulic reversing device |
| CN113266613B (en) * | 2021-03-23 | 2022-08-05 | 同济大学 | Large-flow shaft flow distribution proportion servo valve |
| CN117837362B (en) * | 2024-03-07 | 2024-05-28 | 山东省农业机械科学研究院 | Water and fertilizer regulating and controlling conveying pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2981288A (en) * | 1959-07-15 | 1961-04-25 | Hough Co Frank | Hydraulic control valves |
| CN101430026A (en) * | 2007-11-09 | 2009-05-13 | 株式会社山武 | Flow rate measurement valve |
| EP3001043A1 (en) * | 2014-09-25 | 2016-03-30 | CNH Industrial Italia S.p.A. | Hydraulic valve |
| JP2016056889A (en) * | 2014-09-10 | 2016-04-21 | 株式会社豊田自動織機 | Rotary type valve device |
| CN209688170U (en) * | 2019-02-25 | 2019-11-26 | 江苏佳煤机械有限公司 | A kind of changeable pressure tap rotary valve |
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2019
- 2019-02-25 CN CN201910138520.1A patent/CN109780268B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2981288A (en) * | 1959-07-15 | 1961-04-25 | Hough Co Frank | Hydraulic control valves |
| CN101430026A (en) * | 2007-11-09 | 2009-05-13 | 株式会社山武 | Flow rate measurement valve |
| JP2016056889A (en) * | 2014-09-10 | 2016-04-21 | 株式会社豊田自動織機 | Rotary type valve device |
| EP3001043A1 (en) * | 2014-09-25 | 2016-03-30 | CNH Industrial Italia S.p.A. | Hydraulic valve |
| CN209688170U (en) * | 2019-02-25 | 2019-11-26 | 江苏佳煤机械有限公司 | A kind of changeable pressure tap rotary valve |
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