Walking plate limiting mechanism of glasses valve

Abstract

The utility model discloses a running board limiting mechanism of a glasses valve, which comprises a guide wheel, and the guide wheel is rotatably sleeved on the outer side of a shaft; a tapered roller bearing is arranged between the guide wheel and the shaft; bearing glands are fixed to the two sides of the guide wheel and rotationally arranged on the outer surface of the shaft in a sleeving mode. The two ends of the shaft are rotationally connected with the support; end covers are fixed to the two sides of the support and are coaxial with the shaft. And the shifting wheel fixedly sleeves the outer side of the shaft. The valve plate walking limiting mechanism solves the problems that an existing valve plate walking limiting mechanism is complex in structure, troublesome to maintain and high in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a plate-traveling limiting mechanism of a glasses valve. Background Art

[0002] The glasses valve is an important equipment in the pipeline system of harmful gases such as gas and flue gas. The glasses valve is opened and closed to realize the function of cutting off and opening the pipeline. It is a physical barrier to prevent the leakage of harmful gases, prevent the leakage of harmful gases and safety accidents, and ensure the safety of maintenance personnel and the environment.

[0003] When the glasses valve realizes the function of cutting off and opening the pipeline, there are two actions. The valve plate moves longitudinally, the valve plate disengages the sealing surface and the net sealing surface, and the valve plate moves laterally. The valve plate is provided with a blind plate and a transparent plate. After the working positions of the blind plate and the transparent plate are switched into place, the pull plate drives the valve seat to move axially, pressing the valve plate tightly against the fixed valve seat to realize the function of cutting off and opening the pipeline. Conventional products need parts to realize the longitudinal and transverse movement of the valve plate: 4 longitudinal top wheels, 1 transverse guide rail, 8 leaf springs, 4 hanging wheels, a total of 17 parts are assembled, the structure is complex, maintenance is cumbersome, and the cost is high. Summary of the invention

[0004] In order to achieve the above-mentioned purpose, the utility model provides a plate travel limiting mechanism for a glasses valve, which solves the problems of complex structure, troublesome maintenance and high cost of the existing valve plate travel limiting mechanism.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is a plate-traveling limiting mechanism for an eyeglass valve, comprising a guide wheel, which is rotatably sleeved on the outside of a shaft; a tapered roller bearing is arranged between the guide wheel and the shaft; bearing pressure covers are fixed on both sides of the guide wheel, and the bearing pressure covers are rotatably sleeved on the outer surface of the shaft; both ends of the shaft are rotatably connected to a support; end covers are fixed on both sides of the support, and the end covers are coaxial with the shaft; a puller is fixedly sleeved on the outside of the shaft.

[0006] Furthermore, the shaft is provided with a shaft shoulder, and the number of the tapered roller bearings is two, and the two tapered roller bearings are respectively located on both sides of the shaft shoulder.

[0007] Furthermore, the support is fixed in the valve body of the glasses valve; the valve plate of the glasses valve is installed in the groove of the guide wheel; the valve plate of the glasses valve is located between the fixed sealing seat and the dynamic sealing seat, and the side of the dynamic sealing seat away from the valve plate is fixedly connected with a pull plate; the pull wheel and the pull plate are located on the same side of the guide wheel.

[0008] Furthermore, when the valve plate is in a clamped state, the gap between the shaft and the right end cover of the support is equal to the gap between the right side of the pull plate and the pull wheel.

[0009] Furthermore, when the valve plate is in the pulled-open state, the gap between the shaft and the left end cover of the support is equal to the gap between the dynamic sealing seat and the valve plate.

[0010] Furthermore, the number of the plate-moving limiting mechanisms of the glasses valve is four, which are respectively arranged in the four corners of the valve body of the glasses valve.

[0011] Furthermore, the puller and the shaft are fixed via a threaded connection and fixed via screws.

[0012] The beneficial effects of the utility model are:

[0013] The utility model designs a new type of glasses valve travel plate limit mechanism, innovatively designs the guide wheel, puller, and shaft, and improves the traditional glasses valve travel plate limit component assembly from 17 components to 4 glasses valve travel plate limit mechanism assembly, which has a simple structure and convenient maintenance, reduces the machining assembly cost, and can meet market demand. The valve plate uses rolling bearings for lateral movement, which has small resistance and flexible operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the installation position of the plate-traveling limiting mechanism of the glasses valve according to the embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Side view of.

[0017] Figure 3 It is a structural diagram of the plate-traveling limiting mechanism of the glasses valve of the embodiment of the utility model in the pulled-open state.

[0018] Figure 4 It is a structural diagram of the clamping state of the plate-traveling limiting mechanism of the glasses valve in the embodiment of the utility model.

[0019] In the figure, 1. support, 2. end cover, 3. shaft, 4. bearing cover, 5. tapered roller bearing, 6. guide wheel, 7. screw, 8. puller, 9. pull plate, 10. valve plate, 11. valve body, 12. dynamic seal seat, 13. fixed seal seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1~Figure 4 As shown, the utility model provides a plate-travel limiting mechanism for a glasses valve, wherein four plates-travel limiting mechanisms for glasses valves are respectively fixed on four corners of a valve body 11 (such as Figure 1 The position indicated by the middle arrow), the valve plate 10 is installed on the valve body 11 through the groove of the guide wheel 6 of the new glasses valve running plate limiting mechanism; the tapered roller bearing 5, the guide wheel 6, the bearing cover 4, and the puller 8 are installed on the shaft 3 of the glasses valve running plate limiting mechanism, and are installed together on the support 1; the end covers 2 are installed at both ends of the support 1, and the end covers 2 limit the axial movement position of the shaft 3 and thus limit the longitudinal limit movement position of the valve plate 10. The valve plate 10 can move laterally relative to the valve body 11 in the groove of the guide wheel 6 to complete the position switching of the blind plate and the transparent plate of the valve plate 10.

[0022] The valve body 11 is a frame structure, with a fixed sealing seat 13, a pull plate 9 and a dynamic sealing seat 12 (the pull plate 9 and the dynamic sealing seat 12 are welded as a whole) arranged inside; a transparent plate and a blind plate are arranged on the valve plate 10, and the remaining components constitute a valve plate travel limit mechanism, the end cover 2 is fixed on the support 1, and the shaft 3 is installed on the support 1 and can rotate relatively; a shoulder is arranged on the shaft 3, and the bearing pressure cover 4 is fixed on the guide wheel 6, and the guide wheel 6 is installed on the shaft 3 through a tapered roller bearing 5 (2 pieces in quantity), and the tapered roller bearings 5 ​​(2 pieces in quantity) are respectively located on both sides of the shoulder of the shaft 3. In this design, the guide wheel 6 can only rotate relative to the shaft 3; the puller 8 is connected to the thread on the outer surface of the shaft 3 through an internal thread, and is fixed by a screw 7 to prevent the puller 8 and the shaft 3 from relative movement.

[0023] In some embodiments, four travel limit mechanisms are provided on the four corners of the valve body 11 and arranged on a plane parallel to the fixed sealing seat 13. The valve plate 10 is installed in the groove of the guide wheel 6 (4 pieces) to ensure that the valve plate 10 is parallel to the fixed sealing seat 13.

[0024] In some embodiments, see Figure 4 When the valve plate 10 is in a clamped state, there is a gap of Lmm between the shaft 3 and the right end cover of the support 1, and no gap with the left end cover, and there is a gap of Lmm between the right side of the pull plate 9 and the pull wheel 8.

[0025] In some embodiments, when the valve plate 10 is in the pulled-open state, the pulling plate 9 presses the pulling wheel 8, and at the same time, the shaft 3 presses the right side end cover of the support 1, thereby limiting the axial sliding of the shaft 3 and the guide wheel 6. Supported by the guide wheel 6, the valve plate 10 moves laterally to complete the station switching of the valve plate 10 through the plate blind plate.

[0026] When the through plate and blind plate positions of the eyeglass valve are switched, the process is as follows: clamping state → loosening state → switching of the through plate and blind plate positions of the valve plate → clamping state.

[0027] Specifically, when the valve plate of the glasses valve realizes the function of cutting off and opening the pipeline, starting from the clamping state, the pull plate 9 and the dynamic sealing seat 12 move longitudinally by Lmm together, and a gap of Lmm is generated between the dynamic sealing seat 12 and the valve plate 10. The pull plate 9 contacts the pull wheel 8 (4), and the pull plate 9 continues to move longitudinally by Lmm. The pull wheel 8 drives the shaft 3 and the guide wheel 6 to drive the valve plate 10 to move longitudinally by Lmm, and a gap of Lmm is generated between the valve plate 10 and the fixed sealing seat 13. The glasses valve is in the opened state, and the valve plate 10 slides in the groove of the guide wheel 6. The guide wheel 6 and the tapered roller bearing 5 rotate relative to the shaft 3, so that the valve plate 10 moves horizontally to realize the switching of the transparent plate and the blind plate position; the pull plate 9 moves in the opposite direction, driving the dynamic sealing seat 12, the valve plate 10, the guide wheel 6 and the shaft 3 to move in the opposite direction to the clamping state, thereby completing the function of cutting off and opening the pipeline.

[0028] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A travel plate limiting mechanism for an eyeglass valve, comprising a guide wheel (6), characterized in that: The guide wheel (6) is rotatably sleeved on the outside of the shaft (3); a tapered roller bearing (5) is arranged between the guide wheel (6) and the shaft (3); bearing pressure covers (4) are fixed on both sides of the guide wheel (6), and the bearing pressure covers (4) are rotatably sleeved on the outer surface of the shaft (3); both ends of the shaft (3) are rotatably connected to the support (1); end covers (2) are fixed on both sides of the support (1), and the end covers (2) are coaxial with the shaft (3); and the puller (8) is fixedly sleeved on the outside of the shaft (3).

2. The plate-travel limiting mechanism of the glasses valve according to claim 1, characterized in that: The shaft (3) is provided with a shaft shoulder, the number of the tapered roller bearings (5) is two, and the two tapered roller bearings (5) are respectively located on both sides of the shaft shoulder of the shaft (3).

3. A plate-travel limiting mechanism for glasses valve according to claim 1 or 2, characterized in that: The support (1) is fixed in the valve body (11) of the glasses valve; the valve plate (10) of the glasses valve is installed in the groove of the guide wheel (6); the valve plate (10) of the glasses valve is located between the fixed sealing seat (13) and the dynamic sealing seat (12), and a pull plate (9) is fixedly connected to the side of the dynamic sealing seat (12) away from the valve plate (10); the pull wheel (8) and the pull plate (9) are located on the same side of the guide wheel (6).

4. The plate-travel limiting mechanism of the glasses valve according to claim 3, characterized in that: When the valve plate (10) is in a clamped state, the gap between the shaft (3) and the right end cover of the support (1) is equal to the gap between the right side of the pull plate (9) and the pull wheel (8).

5. The plate-travel limiting mechanism of the glasses valve according to claim 3, characterized in that: When the valve plate (10) is in the pulled-open state, the gap between the shaft (3) and the left end cover of the support (1) is equal to the gap between the dynamic sealing seat (12) and the valve plate (10).

6. A plate-travel limiting mechanism for glasses valve according to claim 1 or 2, characterized in that: The number of the plate-travel limiting mechanisms of the glasses valve is four, which are respectively arranged at four corners of the valve body (11) of the glasses valve.

7. A plate-travel limiting mechanism for glasses valve according to claim 1 or 2, characterized in that: The puller (8) and the shaft (3) are fixed via a threaded connection and are fixed via a screw (7).

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