CN211059445U - Solderless brushless linear motor driven poppet valve - Google Patents
Solderless brushless linear motor driven poppet valve Download PDFInfo
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- CN211059445U CN211059445U CN201922396702.7U CN201922396702U CN211059445U CN 211059445 U CN211059445 U CN 211059445U CN 201922396702 U CN201922396702 U CN 201922396702U CN 211059445 U CN211059445 U CN 211059445U
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Abstract
The utility model discloses a solderless lifting valve driven by a brushless linear motor, which comprises a valve body with a hollow cavity inside, wherein the bottom of the valve body is provided with an air inlet and an air outlet; the top end of the valve body is provided with a brushless linear motor, and the output shaft end of the brushless linear motor is connected with a central rod and a valve core riveted at the bottom end of the central rod through a transitional connection structure; the transition connection structure comprises a driving block fixed at the end of an output shaft of the brushless linear motor and a coupler assembled with the driving block and connected with the central rod in a riveting mode. The utility model discloses a brushless linear electric motor has simplified the project organization as the executor power supply. The central rod and the valve core are riveted and fixed, and the coupler and the central rod are riveted and fixed, so that the risk of falling of a welding seam generated by welding is avoided; the output shaft of the brushless linear motor is connected with the central rod by the coupler and the driving block, and the brushless linear motor cannot be damaged in the assembling process.
Description
Technical Field
The utility model relates to an automobile parts technical field.
Background
Most internal combustion engines have poppet valves, sometimes referred to as cone valves, poppet valves or poppet valves, as intake and exhaust valves, for controlling the flow of air into the combustion chambers of the engine and the flow of exhaust burned gases. Typically, poppet valves are operated by cams on a rotating camshaft. In large diesel engines, the residual pressure in the combustion chamber can reach 70 bar when the exhaust valve is opened. This requires a considerable force to be applied to the exhaust valve.
As emissions regulations are upgraded, control systems become increasingly complex, placing higher demands on the response speed, accuracy and size of the actuators. The actuator power source of the existing poppet valve mostly adopts a direct current brush motor, and the direct current brush motor is small in size, simple in structure and easy to control, and is the first choice of various actuator power sources. However, dc brushed motors have two disadvantages: firstly, the electric brush is abraded, and after the direct current brush motor is used for a period of time, the carbon brush is seriously abraded, so that the service life of a product is limited; secondly, size, ordinary motor all is rotary motion, all needs a set of structure, converts rotary motion into linear motion, needs to adopt the shifter, and this must bring the complexity of structure.
The central rod of the existing poppet valve is connected with the valve core or other parts in a welding mode, and after the poppet valve is used for a long time, the phenomenon of falling is easy to occur under the continuous impact of high-temperature gas, the interior of the poppet valve needs to be periodically overhauled, and the fallen parts are replaced.
In addition, when the motor output shaft and the central rod of the poppet valve are not coaxial after installation, the motor output shaft, the central rod or other components are easily damaged, and the interior of the poppet valve is easily damaged prematurely. For this reason, the central rod of the poppet valve requires a high degree of precision in its installation, which undoubtedly increases the labor intensity of the operator.
Disclosure of Invention
The utility model discloses the technical problem that need solve provides a brushless linear electric motor driven poppet valve of no welded, adopt the direct current to have the brush motor and restrict the life of product with solving current poppet valve, the problem of the complication of structure, the problem that drops easily between well core rod and the case, and the motor output shaft appears easily when the installation back disalignment between the motor output shaft of poppet valve and well core rod, well core rod or the impaired problem of other parts, with the life who increases the poppet valve, simplify the inner structure of poppet valve, so that well core rod of poppet valve need not very high installation accuracy when the installation, can not be too early impaired with well core rod of guaranteeing the poppet valve.
In order to solve the technical problem, the utility model adopts the following technical proposal.
A lift valve driven by a brushless linear motor without welding comprises a valve body with a hollow cavity inside, wherein the bottom of the valve body is provided with an air inlet and an air outlet; the top end of the valve body is provided with a brushless linear motor, the output shaft end of the brushless linear motor is connected with a central rod penetrating through the hollow cavity of the valve body and a valve core which is riveted at the bottom end of the central rod and is used for controlling the on-off between the air inlet and the air outlet under the driving of the brushless linear motor through a transitional connection structure; the transitional connection structure comprises a driving block fixed at the end of the output shaft of the brushless linear motor and a coupler which is assembled with the driving block and connected with the central rod in a riveting mode for avoiding the problem of premature damage of parts when the output shaft of the brushless linear motor is not coaxial with the central rod.
Further optimize technical scheme, well core rod sets up to the step shaft form, well core rod from last to setting gradually down to first step shaft, second step shaft, third step shaft and fourth step shaft, first step shaft and second step shaft juncture are provided with and are used for riveting the first pressure of support of riveting of being convenient for when being connected with the shaft coupling, and third step shaft and fourth step shaft juncture are provided with and are used for riveting the second pressure of support of riveting of being convenient for when being connected with the case.
According to the technical scheme, the outer wall of the driving block is provided with an annular bulge, and the coupler is provided with a connecting clamping groove matched with the annular bulge.
According to the technical scheme, the valve core is a flat cover plate, the outer diameter of the valve core is larger than the inner diameter of the air inlet, and the outer diameter of the valve core is smaller than the inner diameter of the air outlet.
Further optimize technical scheme, still be provided with downwards on the valve body that is located brushless linear electric motor under and be used for prescribing a limit to the position of drive block and shaft coupling in order to guarantee that brushless linear electric motor's output shaft can stretch out the spacing arch of certain length.
Further optimize technical scheme, set up the shoulder hole that is linked together with the air inlet in the valve body, the shoulder hole includes from the top down sets gradually first shoulder hole, second shoulder hole and third shoulder hole in the valve body, and the air inlet is linked together with the gas outlet.
According to the technical scheme, a return structure which can ensure that the central rod and the valve core can be restored to the original positions after the brushless linear motor fails to control is arranged in the first step hole; the return structure comprises a return spring which is sleeved on the periphery of the central rod, one end of the return spring is fixed with the bottom end of the coupler, and the other end of the return spring is fixed with the inner wall of the first stepped hole.
According to the technical scheme, the sealing guide structures which are used for playing a sealing role and guiding the center rod are arranged in the second step hole and the third step hole.
Further optimize technical scheme, sealed guide structure is including inlaying the sealing washer that is used for preventing that high-temperature gas from scurrying in the second step hole and being used for avoiding brushless linear electric motor to damage because of the high temperature and inlaying the uide bushing that is used for playing the guide effect to well core rod under the sealing washer of inlaying in the second step hole, well core rod passes the sealing washer and with the sealing washer slip sealing join in marriage, well core rod passes the uide bushing.
Further optimize technical scheme, the uide bushing is the echelonment, and the lower part setting of uide bushing is downthehole at the third ladder, and the bottom mounting of uide bushing is provided with and is used for cleaing away the scraper blade of attaching to soot particulate matter on well core rod in order to ensure that the poppet valve can not block dead when well core rod reciprocates, and the bottom of scraper blade is inwards buckled and has certain clearance with well core rod between.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model discloses a brushless linear electric motor that does not need any additional mechanism, direct output linear motion has cancelled the shifter as the executor power supply, has simplified the project organization, and the cost is reduced widely has simplified the structural design degree of difficulty greatly, has increased the reliability of product. In the utility model, the center rod and the valve core are riveted and fixed, and the coupler and the center rod are riveted and fixed, so that the risk of falling off of a welding seam generated by welding is avoided; the output shaft of the brushless linear motor is connected with the central rod by the coupler and the driving block, so that the assembly is simple, the brushless linear motor cannot be damaged in the assembly process, the problem of premature damage of the motor and parts caused by the fact that the brushless linear motor and the central rod are not coaxial is avoided, and the cost advantage is obvious; the mechanical limit of the coupling is realized through the arranged limit bulge, the initial working position of the brushless linear motor is reached, and the consistency is good.
The utility model discloses the shaft coupling has the effect of spring holder concurrently, and return spring installs between shaft coupling and valve body, can ensure under the situation of brushless linear electric motor abnormal power failure that the initial position can be got back to the case.
The utility model discloses the spacing arch that sets up is used for prescribing a limit to the position of drive block and shaft coupling, guarantees that brushless linear electric motor's output shaft can stretch out certain length. Because brushless dc motors have characteristics: the moment of the initial position is very small, and the working moment can be achieved only by extending a certain distance. The brushless linear motor is extended by a certain length when being installed, and the brushless linear motor is enabled to be in the initial position through the arranged limiting protrusions, the top end face of the driving block and the top end face of the coupler are in contact with the limiting protrusions, the output shaft of the brushless linear motor is enabled to be extended by a certain length at the initial position, mechanical limitation is carried out on the initial position of the brushless linear motor, the initial working position of the brushless linear motor is accurately positioned, and the consistency of a poppet valve product is guaranteed.
The utility model discloses the fixed scraper blade that is provided with on the uide bushing because the setting of scraper blade can realize the utility model discloses scrape the operation of getting to the central rod in the use, can in time clear away particulate matters such as soot attached to on the central rod, not only ensure that the poppet valve can not block and die, can also prolong the life of poppet valve.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the brushless linear motor of the present invention when mounted with a driving block;
FIG. 3 is a schematic view of the structure of the center rod and the valve core of the present invention when they are installed;
FIG. 4 is a schematic view of the structure of the center rod, the valve core, and the coupling of the present invention when they are mounted to the valve body;
FIG. 5 is a schematic view of the structure of the center rod of the present invention in riveting with the coupling;
fig. 6 is a schematic diagram of the structure of the brushless linear motor when the brushless linear motor rotates through the shaft coupling driving center rod.
Wherein: 1. brushless linear electric motor, 2, drive block, 21, cyclic annular arch, 3, shaft coupling, 31, connecting groove, 4, sealing washer, 5, uide bushing, 6, scraper blade, 7, case, 8, return spring, 9, valve body, 91, air inlet, 92, gas outlet, 93, shoulder hole, 10, well core rod, 101, first pressure rivet step, 102, second pressure rivet step, 11, spacing arch.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
A lift valve driven by a brushless linear motor without welding is shown in a combined mode in figures 1 to 6 and comprises a valve body 9, the brushless linear motor 1, a central rod 10, a valve core 7 and a transition connection structure.
The valve body 9 is hollow and has an air inlet 91 and an air outlet 92 at the bottom of the valve body 9.
Brushless linear electric motor 1 sets up on the top of valve body 9, and brushless linear electric motor 1's output shaft end is provided with well core rod 10 through the transition connection structural connection, and well cavity that well core rod 10 passed valve body 9. And the valve body 9 and the brushless linear motor 1 are both provided with positioning pin holes, and motor positioning pins are inserted into the positioning pin holes in the valve body 9 and the brushless linear motor 1 to realize the locking and positioning of the brushless linear motor 1.
The utility model provides a brushless linear electric motor 1 is an electromechanical integration product, and it has not only cancelled the brush structure, and direct output linear motion simultaneously is particularly suitable for the application scenario of poppet valve, has characteristics such as with low costs, longe-lived, reliability height. The utility model provides a brushless linear electric motor 1 adopts KYAC 2000 type linear electric motor, also can adopt the linear electric motor of other models.
Well core rod 10 sets up to the step shaft form, well core rod 10 from last to setting gradually down to first step shaft, second step shaft, third step shaft and fourth step shaft, first step shaft and second step shaft juncture are provided with first pressure and rivet step 101, and first pressure is riveted step 101 and is used for pressing with shaft coupling 3 and is riveted the support of being convenient for when being connected. And a second press-riveting step 102 is arranged at the junction of the third stepped shaft and the fourth stepped shaft, and the second press-riveting step 102 is used for press-riveting the valve element 7 and is convenient for press-riveting support.
The valve core 7 is riveted at the bottom end of the central rod 10 and used for controlling the on-off between the air inlet 91 and the air outlet 92 under the driving of the brushless linear motor 1.
The valve core 7 is a flat cover plate, the outer diameter of the valve core 7 is larger than the inner diameter of the air inlet 91, and the outer diameter of the valve core 7 is smaller than the inner diameter of the air outlet 92.
The transition connection structure comprises a driving block 2 and a coupling 3. The driving block 2 is fixed with the output shaft end of the brushless linear motor 1. The shaft coupling 3 is assembled with the driving block 2 and is connected with the central rod 10 in a riveting mode, and the problem that parts are damaged prematurely when the output shaft of the brushless linear motor 1 is not coaxial with the central rod 10 is solved.
The outer wall of the driving block 2 is provided with an annular bulge 21, and the coupling 3 is provided with a connecting clamping groove 31 matched with the annular bulge 21.
And a limiting bulge 11 is further downwards arranged on the valve body 9 under the brushless linear motor 1, and the limiting bulge 11 is used for limiting the positions of the driving block 2 and the coupler 3 so as to ensure that the output shaft of the brushless linear motor 1 can extend out by a certain length. Because brushless dc motors have characteristics: the moment of the initial position is very small, and the working moment can be achieved only by extending a certain distance. When the brushless linear motor is installed, the brushless linear motor stretches out by a certain length, and the limiting protrusions 11 are arranged, so that the brushless linear motor is in the initial position, the top end faces of the driving block 2 and the shaft coupler 3 are in contact with the limiting protrusions 11, and the output shaft of the brushless linear motor can stretch out by a certain length in the initial position.
A stepped hole 93 communicated with the air inlet 91 is formed in the valve body 9, the stepped hole 93 comprises a first stepped hole, a second stepped hole and a third stepped hole which are sequentially formed in the valve body 9 from top to bottom, and the air inlet 91 is communicated with the air outlet 92.
A return structure is arranged in the first step hole and used for ensuring that the central rod 10 and the valve core 7 can be restored to the original position after the brushless linear motor 1 fails to control.
The return structure comprises a return spring 8, the return spring 8 is sleeved on the periphery of the central rod 10, one end of the return spring 8 is fixed with the bottom end of the coupler 3, and the other end of the return spring is fixed with the inner wall of the first stepped hole.
The return spring 8 is arranged to ensure that the spool 7 returns to the initial position when the electrical control fails.
The utility model discloses the shaft coupling has the effect of spring holder concurrently, and return spring installs between shaft coupling and valve body, can ensure under the situation of brushless linear electric motor abnormal power failure that the initial position can be got back to the case.
Sealed guide structure is provided with in second step hole and the third step hole, and sealed guide structure is used for playing sealed effect, and leads to center rod 10.
The sealing guide structure comprises a sealing ring 4 and a guide sleeve 5. The sealing ring 4 is embedded in the second stepped hole and used for preventing high-temperature gas from flowing upwards so as to prevent the brushless linear motor 1 from being damaged due to overhigh temperature. The guide sleeve 5 is embedded in the second stepped hole and located right below the sealing ring 4 and used for guiding the central rod 10, and the guide sleeve 5 is used for ensuring that the central rod 10 can move in the vertical direction all the time. The central rod 10 passes through the sealing ring 4 and is in sliding sealing assembly with the sealing ring 4, and the central rod 10 passes through the guide sleeve 5.
The uide bushing 5 is the echelonment, and the lower part setting of uide bushing 5 is downthehole at the third echelonment, and the bottom mounting of uide bushing 5 is provided with scraper blade 6, and scraper blade 6 is used for cleaing away when well core rod 10 reciprocates and adheres to soot particulate matter on well core rod 10 to ensure that the poppet valve can not block and die, the bottom of scraper blade 6 inwards buckle and with have certain clearance between well core rod 10.
Furthermore, the utility model discloses in still be provided with the position sensor who is used for detecting brushless linear electric motor 1's output shaft motion position and be used for receiving the position sensor signal and carry out the control unit that controls brushless linear electric motor 1, control unit adopts 51 singlechips. The controlled end of the brushless linear motor 1 is connected to the output end of the control unit, and the output end of the position sensor is connected to the input end of the control unit.
The utility model discloses an actual assembly process as follows.
First, the drive block 2 is mounted on the output shaft of the brushless linear motor 1, as shown in fig. 2. After the valve element 7 is fitted into the center rod 10, the center rod is press-riveted with the valve element as shown in fig. 3.
Next, the scraper 6, the guide sleeve 5, and the seal ring 4 are sequentially installed in the valve body 9. The center rod assembly is installed in the valve body 9, the return spring 8 is placed in the valve body, and the return spring 8 is fixed. And (3) installing the coupler 3, and performing riveting connection on the coupler 3 and the central rod 10. The center rod 10 is provided with a first press riveting step 101 for facilitating press riveting and supporting, as shown in fig. 5.
And finally, mounting the brushless linear motor 1 assembly, manually pulling out an output shaft of the brushless linear motor 1, mounting the driving block 2 into the coupler 3, inserting a motor positioning pin into the valve body 9 and a positioning pin hole in the brushless linear motor 1, locking a screw, and positioning the brushless linear motor 1 on the valve body 9.
The utility model discloses when in actual use, brushless linear electric motor 1's output shaft drives the up-and-down motion of drive block 2, shaft coupling 3 and well core rod 10, and then drives case 7 up-and-down motion, break-make between the air inlet 91 of control valve body 9 and the gas outlet 92. The position sensor transmits a detection signal to the control unit while the output shaft of the brushless linear motor 1 moves up and down. During the up-and-down movement of the central rod 10, the scraping plate 6 can remove the particulate matters such as soot attached to the output shaft of the brushless linear motor 1, so that the valve body is prevented from being stuck.
The utility model discloses having adopted a section and not needing any additional mechanism, direct output linear motion's brushless linear electric motor 1 is as the executor power supply, and the application scenario of especially adapted poppet valve has with low costs, and is longe-lived, characteristics such as reliability height. The utility model has the advantages that: 1. the output shaft of the motor directly outputs linear motion, a conversion mechanism is eliminated, and the win-win cost and reliability are achieved; 2. the central rod 10 and the valve core 7 are riveted and fixed, so that the risk of falling off of a welding seam generated by welding is avoided; 3. the output shaft of the brushless linear motor 1 is connected with the central rod 10 by the coupler 3 and the driving block 2, so that the assembly is simple, the brushless linear motor 1 cannot be damaged in the assembly process, and the cost advantage is obvious; 4. the initial working position of the brushless linear motor 1 is reached through mechanical limiting, and the consistency is good.
Claims (10)
1. A lift valve driven by a brushless linear motor without welding comprises a valve body (9) with a hollow cavity inside, wherein the bottom of the valve body (9) is provided with an air inlet (91) and an air outlet (92); the method is characterized in that: the top end of the valve body (9) is provided with a brushless linear motor (1), the output shaft end of the brushless linear motor (1) is connected with a central rod (10) penetrating through the hollow cavity of the valve body (9) and a valve core (7) which is riveted at the bottom end of the central rod (10) and is used for controlling the on-off of the air inlet (91) and the air outlet (92) under the driving of the brushless linear motor (1); the transitional connection structure comprises a driving block (2) fixed to the end of the output shaft of the brushless linear motor (1) and a coupler (3) which is assembled with the driving block (2) and connected with the central rod (10) in a riveting mode to avoid the problem that the output shaft of the brushless linear motor (1) and the central rod (10) are not coaxial and cause premature damage of parts.
2. A weldless brushless linear motor driven poppet valve as defined in claim 1, wherein: well core rod (10) set up to the step shaft form, well core rod (10) from last to setting gradually down to first step shaft, second step shaft, third step shaft and fourth step shaft, first step shaft and second step shaft juncture are provided with and are used for pressing with shaft coupling (3) and rivet the first pressure of support of riveting step (101) of being convenient for when being connected, and third step shaft and fourth step shaft juncture are provided with and are used for pressing with case (7) and rivet the second of support of being convenient for when being connected and rivet step (102) of riveting step of pressing.
3. A weldless brushless linear motor driven poppet valve as defined in claim 1, wherein: the outer wall of the driving block (2) is provided with an annular bulge (21), and the coupler (3) is provided with a connecting clamping groove (31) matched with the annular bulge (21).
4. A weldless brushless linear motor driven poppet valve as defined in claim 1, wherein: the valve core (7) is a flat cover plate, the outer diameter of the valve core (7) is larger than the inner diameter of the air inlet (91), and the outer diameter of the valve core (7) is smaller than the inner diameter of the air outlet (92).
5. A weldless brushless linear motor driven poppet valve as defined in claim 1, wherein: and a limiting bulge (11) which is used for limiting the positions of the driving block (2) and the shaft coupling (3) so as to ensure that the output shaft of the brushless linear motor (1) can extend out by a certain length is further downwards arranged on the valve body (9) which is positioned right below the brushless linear motor (1).
6. A weldless brushless linear motor driven poppet valve as defined in claim 1, wherein: the novel air valve is characterized in that a stepped hole (93) communicated with the air inlet (91) is formed in the valve body (9), the stepped hole (93) comprises a first stepped hole, a second stepped hole and a third stepped hole which are sequentially formed in the valve body (9) from top to bottom, and the air inlet (91) is communicated with the air outlet (92).
7. A weldless brushless linear motor driven poppet valve as defined in claim 6, wherein: a return structure which is used for ensuring that the central rod (10) and the valve core (7) can be restored to the original positions after the brushless linear motor (1) fails to control is arranged in the first step hole; the return structure comprises a return spring (8) which is sleeved on the periphery of the central rod (10), one end of the return spring is fixed to the bottom end of the coupler (3), and the other end of the return spring is fixed to the inner wall of the first stepped hole.
8. A weldless brushless linear motor driven poppet valve as defined in claim 6, wherein: and sealing guide structures which are used for playing a sealing role and guiding the central rod (10) are arranged in the second step hole and the third step hole.
9. A weldless brushless linear motor driven poppet valve as defined in claim 8, wherein: the sealing guide structure comprises a sealing ring (4) which is embedded in a second stepped hole and used for preventing high-temperature gas from channeling upwards to avoid damage of the brushless linear motor (1) due to overhigh temperature and a guide sleeve (5) which is embedded in the second stepped hole and located under the sealing ring (4) and used for guiding a central rod (10), the central rod (10) penetrates through the sealing ring (4) and is assembled with the sealing ring (4) in a sliding sealing mode, and the central rod (10) penetrates through the guide sleeve (5).
10. A weldless brushless linear motor driven poppet valve as defined in claim 9, wherein: the utility model discloses a lift valve, including uide bushing (5), uide bushing (5) and fixed bottom of uide bushing (5) are equipped with in the third ladder hole, the bottom mounting of uide bushing (5) is provided with and is used for driving away when well core rod (10) reciprocates and adheres to soot particulate matter on well core rod (10) in order to ensure that poppet valve can not block dead scraper blade (6), the bottom of scraper blade (6) inwards buckle and with have certain clearance between well core rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922396702.7U CN211059445U (en) | 2019-12-27 | 2019-12-27 | Solderless brushless linear motor driven poppet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922396702.7U CN211059445U (en) | 2019-12-27 | 2019-12-27 | Solderless brushless linear motor driven poppet valve |
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| Publication Number | Publication Date |
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| CN211059445U true CN211059445U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922396702.7U Active CN211059445U (en) | 2019-12-27 | 2019-12-27 | Solderless brushless linear motor driven poppet valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848446A (en) * | 2019-12-27 | 2020-02-28 | 无锡隆盛科技股份有限公司 | Solderless brushless linear motor driven poppet valve |
| CN114673794A (en) * | 2022-04-11 | 2022-06-28 | 中国电子科技集团公司第三十八研究所 | Explosion-proof valve for hydrogen aerostat |
-
2019
- 2019-12-27 CN CN201922396702.7U patent/CN211059445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848446A (en) * | 2019-12-27 | 2020-02-28 | 无锡隆盛科技股份有限公司 | Solderless brushless linear motor driven poppet valve |
| CN114673794A (en) * | 2022-04-11 | 2022-06-28 | 中国电子科技集团公司第三十八研究所 | Explosion-proof valve for hydrogen aerostat |
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