A new type of three-way rocker arm base valve

Abstract

A novel three-way rocker arm base valve provided by the present invention comprises an electromagnetic drive module and a rocker arm valve module. The electromagnetic drive module includes a coil, a fixed iron core, a moving iron core, a first limit sleeve, a second limit sleeve, and a first spring. The rocker arm valve module includes a base, a valve body, a connecting seat, a spring sleeve rod, a second spring, and a rocker arm valve diaphragm assembly. An activity through groove is provided through the base. The rocker arm valve diaphragm assembly includes a rocker arm, a first longitudinal activity rod, a second longitudinal activity rod, and a diaphragm. First elastic protrusions and second elastic protrusions are provided at the bottom of the diaphragm. Clamps are provided at both ends of the rocker arm. Card slots are provided on both the first longitudinal activity rod and the second longitudinal activity rod. A spring groove is provided at the bottom of the connecting seat. The spring sleeve rod is movably arranged in the spring groove. A COM terminal, an NC terminal, and a NO terminal are provided on the valve body. It can ensure that the diaphragm only moves longitudinally, improve the sealing effect of the diaphragm on the valve body, and improve the sealing stability. It has the advantages of simple structure and easy processing.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly to a new type of three-way rocker base valve. Background Art

[0002] Basically, the sealing structure of the existing three-way rocker valve group is that a rubber diaphragm is connected to the seesaw in a form of encapsulation. The moving iron core component drives the combination of the seesaw and the diaphragm to swing up and down in a large amplitude, so that the diaphragm is compressed against the valve body at an oblique angle to achieve sealing. For this kind of sealing structure, by driving the seesaw to swing up and down in a large amplitude, the diaphragm is compressed against the valve body at an oblique angle, then the corresponding valve body also needs to be machined with a same oblique angle for correspondence. However, with the current technology, it is very difficult to ensure that the error between each batch is very small, and the processing difficulty is relatively large. The tolerance fluctuation of the diaphragm thickness will cause the change of the oblique angle, thus affecting the sealing effect. Its sealing stability is insufficient, which affects the use effect. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide a new type of three-way rocker base valve to ensure stable sealing and reduce the processing difficulty.

[0004] To solve the above technical problems, a new type of three-way rocker arm base valve provided by the present invention is adopted, which includes an electromagnetic drive module and a rocker arm valve module. The electromagnetic drive module includes a coil, a fixed iron core fixedly connected to the upper side of the inner circle of the coil, a moving iron core movably arranged on the lower side of the inner circle of the coil, a first limit sleeve fixedly connected to the bottom end of the coil, a second limit sleeve fixedly connected to the bottom end of the moving iron core, and a first spring abutted between the first limit sleeve and the second limit sleeve; the rocker arm valve module includes a base, a valve body fixedly connected to the bottom of the base, a connecting seat, a spring sleeve rod, a second spring, and a rocker arm valve diaphragm assembly. An activity through groove matching the connecting seat is penetrated through the base. The connecting seat is movably arranged on the activity through groove and its top abuts against the bottom of the second limit sleeve. The rocker arm valve diaphragm assembly includes a rocker arm hinged between the two side walls of the activity through groove, a first longitudinal activity rod and a second longitudinal activity rod respectively arranged at both ends of the rocker arm, and a diaphragm fixedly connected between the base and the valve body. The bottom of the diaphragm is provided with a first elastic convex package and a second elastic convex package respectively corresponding to the first longitudinal activity rod and the second longitudinal activity rod. Clamping jaws are arranged at both ends of the rocker arm. Card slots matching the clamping jaws are arranged on the first longitudinal activity rod and the second longitudinal activity rod. The clamping jaws are stuck in the card slots. A spring groove is arranged at the bottom of the connecting seat. The spring sleeve rod is movably arranged in the spring groove. The second spring abuts between the top of the spring groove and the spring sleeve rod. The first longitudinal activity rod abuts between the spring sleeve rod and the first elastic convex package. The second longitudinal activity rod abuts between the connecting seat and the second elastic convex package. A flow channel is formed by spacing the top of the valve body from the diaphragm. A COM end, an NC end, and a NO end communicated with the flow channel are arranged on the valve body. The NO end and the NC end are respectively corresponding to the first elastic convex package and the second elastic convex package; the electromagnetic drive module further includes a fixed seat fixedly connected to the top of the base, and a housing covering the coil and buckled and connected with the fixed seat. The second limit sleeve includes an internal thread sleeve part and a limit part arranged on the periphery of the internal thread sleeve part. A screw part is arranged at the bottom end of the moving iron core. The screw part is threadedly connected with the internal thread sleeve part. A groove body matching the limit part is arranged at the top of the fixed seat. A first through hole matching the internal thread sleeve part is penetrated through the bottom of the groove body. The limit part and the bottom end of the internal thread sleeve part are respectively movably arranged in the groove body and the first through hole. The first spring is sleeved on the internal thread sleeve part and abuts between the first limit sleeve and the top of the limit part; the electromagnetic drive module further includes a U-shaped part sleeved on the coil and a cover plate arranged at the bottom of the U-shaped part. Avoidance grooves are arranged on both sides of the cover plate. Connecting ears are arranged at both ends of the U-shaped part. The connecting ears are riveted on the avoidance grooves. A second through hole is penetrated through the cover plate. The moving iron core is movably arranged on the second through hole. The coil is stuck between the top of the U-shaped part and the top of the cover plate; the top of the diaphragm is riveted and connected with the bottom ends of the first longitudinal activity rod and the second longitudinal activity rod.

[0005] Preferably, spherical contact surfaces are arranged at the top ends of the first longitudinal activity rod and the second longitudinal activity rod. Spherical grooves matching the spherical contact surfaces are arranged at the bottom end of the spring sleeve rod and the bottom of the connecting seat. The spherical contact surfaces are movably arranged on the spherical grooves.

[0006] Preferably, arc-shaped protrusions are provided on both the upper and lower sides of the rocker arm end, and the arc-shaped protrusions are adjacent to the end face of the card slot.

[0007] Preferably, an installation groove matching the diaphragm is provided at the bottom of the base, and the diaphragm is fixedly connected to the installation groove.

[0008] The beneficial effects of the present invention are as follows: The present invention provides a new type of three-way rocker arm base valve. Liquid enters the flow channel from the COM end. When the coil is powered off, the moving iron core loses the magnetic attraction of the fixed iron core. The first spring pushes the moving iron core upward, and the first spring pushes the connecting seat toward the valve body side. Since the elastic force of the first spring is greater than the elastic force of the second spring, the second spring will be compressed, and the spring sleeve rod will move toward the inner side of the spring groove. The connecting seat will apply a downward thrust to the second longitudinal moving rod, and the rocker arm will rotate. The second longitudinal moving rod will press the second elastic protrusion against the NC end to seal the NC end, and the liquid will flow out from the NO end. When the coil is powered on, the moving iron core is adsorbed and lifted under the action of the magnetic force of the fixed iron core. The second spring will recover elastically and apply a downward thrust to the spring sleeve rod. The spring sleeve rod will move toward the outer side of the spring groove, and the rocker arm will rotate. The second elastic protrusion will open the NC end. The first longitudinal moving rod will press the first elastic protrusion against the NO end to seal the NO end, and the liquid will flow out from the NC end, ensuring that the diaphragm only moves longitudinally, improving the sealing effect of the diaphragm on the valve body, improving the sealing stability, and having the advantages of simple structure and easy processing. Description of the Drawings

[0009] Figure 1 Illustrates the external structure schematic diagram of the present invention.

[0010] Figure 2 Illustrates the cross-sectional view of the present invention.

[0011] Figure 3 Illustrates the exploded structure schematic diagram of the present invention.

[0012] Figure 4 Illustrates the present invention Figure 3 Partial enlarged structure schematic diagram of part A in

[0013] Description of the attached reference numerals: coil 10, fixed iron core 11, movable iron core 12, screw rod part 120, first limiting sleeve 13, second limiting sleeve 14, internal thread sleeve part 140, limiting part 141, first spring 15, fixed seat 16, groove body 160, first through hole 161, fastening groove 162, outer shell 17, fastening part 170, base 20, movable through groove 21, installation groove 22, valve body 30, flow channel 31, COM terminal 32, NC terminal 33, NO terminal 34, connecting seat 40, spring groove 400, spring sleeve rod 41, spherical groove 410, second spring 42, rocker arm 50, jaw 500, arc-shaped protrusion 501, first longitudinal movable rod 51, clamping groove 510, spherical contact surface 511, second longitudinal movable rod 52, diaphragm 53, first elastic convex hull 530, second elastic convex hull 531, U-shaped part 60, connecting ear 61, cover plate 70, avoidance groove 71, second through hole 72. Specific embodiments

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure.

[0015] All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0016] Refer to Figures 1-4 。

[0017] The present invention provides a novel three-way rocker arm base valve, which includes an electromagnetic drive module and a rocker arm valve module. The electromagnetic drive module includes a coil 10, a fixed iron core 11 fixedly connected to the upper side of the inner ring of the coil 10, a movable iron core 12 movably arranged on the lower side of the inner ring of the coil 10, a first limit sleeve 13 fixedly connected to the bottom end of the coil 10, a second limit sleeve 14 fixedly connected to the bottom end of the movable iron core 12, and a first spring 15 abutted between the first limit sleeve 13 and the second limit sleeve 14. The rocker arm valve module includes a base 20, a valve body 30 fixedly connected to the bottom of the base 20, a connecting seat 40, a spring sleeve rod 41, a second spring 42, and a rocker arm valve diaphragm assembly. An activity through groove 21 matching the connecting seat 40 is penetratingly arranged on the base 20. The connecting seat 40 is movably arranged on the activity through groove 21 and its top abuts against the bottom of the second limit sleeve 13. The rocker arm valve diaphragm assembly includes a rocker arm 50 hinged between the two side walls of the activity through groove 21, a first longitudinal activity rod 51 and a second longitudinal activity rod 52 respectively arranged at both ends of the rocker arm 50, and a diaphragm 53 fixedly connected between the base 20 and the valve body 30. First elastic convex bumps 530 and second elastic convex bumps 531 corresponding to the first longitudinal activity rod 51 and the second longitudinal activity rod 52 respectively are arranged at the bottom of the diaphragm 53. Clamping jaws 500 are arranged at both ends of the rocker arm 50. Card slots 510 matching the clamping jaws 500 are arranged on the first longitudinal activity rod 51 and the second longitudinal activity rod 52. The clamping jaws 500 are stuck in the card slots 510. A spring groove 400 is arranged at the bottom of the connecting seat 40. The spring sleeve rod 41 is movably arranged in the spring groove 400. The second spring 42 is abutted between the top of the spring groove 400 and the spring sleeve rod 41. The first longitudinal activity rod 51 is abutted between the spring sleeve rod 41 and the first elastic convex bump 530. The second longitudinal activity rod 52 is abutted between the connecting seat 40 and the second elastic convex bump 531. A flow channel 31 is formed by spacing the top of the valve body 30 from the diaphragm 53. A COM end 32, an NC end 33, and a NO end 34 communicating with the flow channel 31 are arranged on the valve body 30. The NO end 34 and the NC end 33 respectively correspond to the first elastic convex bump 530 and the second elastic convex bump 531.

[0018] Its working principle is as follows: The liquid enters the flow channel 31 from the COM terminal 32. When the coil 10 is powered off, the moving iron core 12 loses the magnetic attraction of the fixed iron core 11. The first spring 15 pushes the moving iron core 12 upward, and the first spring 15 pushes the connecting seat 40 toward the valve body 30 side. Since the elastic force of the first spring 15 is greater than that of the second spring 42, the second spring 42 will be compressed, and the spring sleeve rod 41 will move inward toward the spring groove 400. The connecting seat 40 will exert a downward thrust on the second longitudinal moving rod 52, and the rocker arm 50 will rotate. The first longitudinal moving rod 51 will rise, and the second longitudinal moving rod 52 will press the second elastic convex part 531 against the NC terminal 33 to seal the NC terminal 33. The liquid will flow out from the NO terminal 34. When the coil 10 is powered on, the moving iron core 12 is adsorbed and lifted under the action of the magnetic force of the fixed iron core 11. The second spring 42 will recover elastically and exert a downward thrust on the spring sleeve rod 41. The spring sleeve rod 41 will move outward toward the outside of the spring groove 400. The rocker arm 50 will rotate. The second longitudinal moving rod 52 will rise and the second elastic convex part 531 will open the NC terminal 33. The first longitudinal moving rod 51 will press the first elastic convex part 30 against the NO terminal 34 to seal the NO terminal 34. The liquid will flow out from the NC terminal 33, ensuring that the diaphragm 53 only moves longitudinally, improving the sealing effect of the diaphragm 53 on the valve body 30, enhancing the sealing stability, and having the advantages of simple structure and easy processing.

[0019] Based on the above embodiments, the electromagnetic drive module further includes a fixed seat 16 fixedly connected to the top of the base 20, and a housing 17 covering the coil 10 and snap-connected to the fixed seat 16. The second limiting sleeve 14 includes an internal thread sleeve portion 140 and a limiting portion 141 provided on the periphery of the internal thread sleeve portion 140. A screw rod portion 120 is provided at the bottom end of the moving iron core 12, and the screw rod portion 120 is threadedly connected to the internal thread sleeve portion 140. A groove body 160 matching the limiting portion 141 is provided at the top of the fixed seat 16. A first through hole 161 matching the internal thread sleeve portion 140 is provided through the bottom of the groove body 160. The limiting portion 141 and the bottom end of the internal thread sleeve portion 140 are respectively movably provided in the groove body 160 and the first through hole 161. The first spring 15 is sleeved on the internal thread sleeve portion 140 and abuts between the first limiting sleeve 13 and the top of the limiting portion 141. Threadedly connecting the screw rod portion 120 to the internal thread sleeve portion 140 facilitates the disassembly and assembly of the moving iron core 12 and the second limiting sleeve 14. When the moving iron core 12 moves up and down, the limiting portion 141 and the bottom end of the internal thread sleeve portion 140 respectively move on the groove body 160 and the first through hole 161. When the limiting portion 141 abuts against the bottom of the groove body 160, the second limiting sleeve 14 stops moving downward, playing a limiting role to avoid damage to the diaphragm 53, and having the advantages of compact structure and easy assembly.

[0020] Based on the above embodiments, the electromagnetic drive module further includes a U-shaped member 60 sleeved on the coil 10 and a cover plate 70 arranged at the bottom of the U-shaped member 60. Avoidance grooves 71 are provided on both sides of the cover plate 70. Connection ears 61 are provided at both ends of the U-shaped member 60, and the connection ears 61 are riveted on the avoidance grooves 71. A second through hole 72 is provided through the cover plate 70, and the moving iron core 12 is movably arranged on the second through hole 72. The coil 10 is clamped between the top of the U-shaped member 60 and the top of the cover plate 70. After the U-shaped member 60 and the cover plate 70 are combined, the coil 10 can be protected, play a positioning role for the coil 10, and improve the structural stability of the electromagnetic drive module.

[0021] Based on the above embodiments, engaging portions 170 are provided on the opposite inner sidewalls of the housing 17, and engaging grooves 161 corresponding to the engaging portions 170 are provided on the sidewall of the fixed seat 16. The engaging portions 170 are engaged in the engaging grooves 162, which facilitates the disassembly and assembly between the housing 17 and the fixed seat 16 and has good assembly stability.

[0022] Based on the above embodiments, the top of the diaphragm 53 is riveted and connected to the bottom ends of the first longitudinal movable rod 51 and the second longitudinal movable rod 52, which can realize the connection and fixation between the first longitudinal movable rod 51, the second longitudinal movable rod 52 and the diaphragm 53. When the first longitudinal movable rod 51 and the second longitudinal movable rod 52 move up and down, the first elastic convex package 530 and the second elastic convex package 531 will be driven to move up and down.

[0023] Based on the above embodiments, spherical contact surfaces 511 are provided at the tops of the first longitudinal movable rod 51 and the second longitudinal movable rod 52, and spherical grooves 410 matching the spherical contact surfaces 511 are provided at the bottom end of the spring sleeve rod 41 and the bottom of the connection seat 40. The spherical contact surfaces 511 are movably arranged in the spherical grooves 410, which can reduce the resistance between the top end of the first longitudinal movable rod 51 and the bottom end of the spring sleeve rod 41 and reduce the resistance between the top end of the second longitudinal movable rod 52 and the bottom of the connection seat 40, and improve the moving smoothness of the first longitudinal movable rod 51 and the second longitudinal movable rod 52.

[0024] Based on the above embodiments, arc-shaped protrusions 501 are provided on both the upper and lower sides of the end of the rocker arm 50, and the arc-shaped protrusions 501 are adjacent to the end face of the card slot 510, which can reduce the resistance between the rocker arm 50 and the card slot 510 and improve the moving smoothness between the jaw 500 and the card slot 510.

[0025] Based on the above embodiments, an installation groove 22 matching the diaphragm 53 is provided at the bottom of the base 20, and the diaphragm 53 is fixedly connected to the installation groove 22, which has the advantage of a compact structure and reduces the product volume.

[0026] The above embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A new type of three-way rocker arm base valve, characterized in that, It includes an electromagnetic drive module and a rocker valve module. The electromagnetic drive module includes a coil, a fixed iron core fixedly connected to the upper side of the inner ring of the coil, a moving iron core movably arranged on the lower side of the inner ring of the coil, a first limit sleeve fixedly connected to the bottom end of the coil, a second limit sleeve fixedly connected to the bottom end of the moving iron core, and a first spring abutted between the first limit sleeve and the second limit sleeve; The rocker valve module includes a base, a valve body fixedly connected to the bottom of the base, a connecting seat, a spring sleeve rod, a second spring, and a rocker valve diaphragm assembly. An activity through groove matching with the connecting seat is penetrated on the base. The connecting seat is movably arranged on the activity through groove and its top abuts against the bottom of the second limit sleeve. The rocker valve diaphragm assembly includes a rocker hinged between the two side walls of the activity through groove, a first longitudinal moving rod and a second longitudinal moving rod respectively arranged at both ends of the rocker, and a diaphragm fixedly connected between the base and the valve body. First elastic protrusions and second elastic protrusions corresponding to the first longitudinal moving rod and the second longitudinal moving rod are respectively arranged at the bottom of the diaphragm. Clamping jaws are arranged at both ends of the rocker. Clamping grooves matching with the clamping jaws are arranged on the first longitudinal moving rod and the second longitudinal moving rod. The clamping jaws are stuck in the clamping grooves. A spring groove is arranged at the bottom of the connecting seat. The spring sleeve rod is movably arranged in the spring groove. The second spring abuts between the top of the spring groove and the spring sleeve rod. The first longitudinal moving rod abuts between the spring sleeve rod and the first elastic protrusion. The second longitudinal moving rod abuts between the connecting seat and the second elastic protrusion. A flow channel is formed at an interval between the top of the valve body and the diaphragm. A COM end, an NC end, and an NO end communicated with the flow channel are arranged on the valve body. The NO end and the NC end are respectively arranged corresponding to the first elastic protrusion and the second elastic protrusion; The electromagnetic drive module further includes a fixed seat fixedly connected to the top of the base, and a housing covering the coil and buckled and connected with the fixed seat. The second limit sleeve includes an internal thread sleeve part and a limit part arranged on the periphery of the internal thread sleeve part. A screw part is arranged at the bottom end of the moving iron core. The screw part is threadedly connected with the internal thread sleeve part. A groove body matching with the limit part is arranged at the top of the fixed seat. A first through hole matching with the internal thread sleeve part is penetrated at the bottom of the groove body. The limit part and the bottom end of the internal thread sleeve part are respectively movably arranged in the groove body and the first through hole. The first spring is sleeved on the internal thread sleeve part and abuts between the first limit sleeve and the top of the limit part; The electromagnetic drive module further includes a U-shaped part sleeved on the coil and a cover plate arranged at the bottom of the U-shaped part. Avoidance grooves are arranged on both sides of the cover plate. Connecting ears are arranged at both ends of the U-shaped part. The connecting ears are riveted on the avoidance grooves. A second through hole is penetrated on the cover plate. The moving iron core is movably arranged on the second through hole. The coil is stuck between the top of the U-shaped part and the top of the cover plate;The top of the diaphragm is riveted and connected to the bottom ends of the first longitudinal movable rod and the second longitudinal movable rod.

2. The novel three-way rocker arm base valve according to claim 1, characterized in that, The top ends of the first longitudinal movable rod and the second longitudinal movable rod are both provided with spherical contact surfaces, the bottom end of the spring sleeve rod and the bottom of the connecting seat are both provided with spherical grooves matching the spherical contact surfaces, and the spherical contact surfaces are movably arranged on the spherical grooves.

3. A novel three-way rocker arm substrate valve according to claim 2, characterized in that, Arc-shaped protrusions are arranged on both the upper and lower sides of the end of the rocker arm, and the arc-shaped protrusions are adjacent to the end face of the clamping groove.

4. A novel three-way rocker arm substrate valve according to claim 3, characterized in that, An installation groove matching the diaphragm is arranged at the bottom of the base, and the diaphragm is fixedly connected to the installation groove.

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