Stroke-free shell two-way valve

Abstract

The utility model discloses a stroke-free shell two-way valve and relates to the technical field of two-way valves, the stroke-free shell two-way valve comprises a valve body, an air cylinder, a transmission system and a thin-wall protective cover, and the valve body comprises a valve shell and a valve element rotationally arranged in the valve shell; the air cylinder is fixed to the valve shell through an air cylinder base. The transmission system is driven by the air cylinder to drive the valve element to rotate in the valve shell. The thin-wall protective cover is detachably arranged outside the valve shell and covers the transmission system. Compared with a traditional stroke shell installation mode, the air cylinder seat of the air cylinder is directly fixed to the valve body or the end cover, the stroke shell is not used as an installation carrier of the air cylinder any more, a thin-wall protective cover is used for protecting a transmission system, the thin-wall protective cover is light in weight, the thin-wall protective cover and the air cylinder are not fixed into a whole, and the service life of the thin-wall protective cover is prolonged. Therefore, the thin-wall shield is more convenient and simpler to disassemble and assemble, and the operation is safer.

Description

Technical Field

[0001] This application relates to the field of dual-way valve technology, specifically to a dual-way valve with a stroke-free housing. Background Technology

[0002] A dual-way valve is a device in a pneumatic conveying system that functions as a transfer and reversing mechanism. It uses a cylinder to rotate an internal valve core, allowing for both direct and bypass connections. Existing dual-way valves typically have the cylinder fixed to a stroke housing, which in turn is fixed to an end cover.

[0003] Because the stroke housing is fixedly connected to the cylinder, the stroke housing is relatively large and bulky, making it inconvenient to install and disassemble. Moreover, in most cases, it involves working at height, posing safety hazards for disassembly and maintenance. Utility Model Content

[0004] The main objective of this application is to provide a stroke-free, dual-way valve to solve the aforementioned technical problems.

[0005] The technical solution adopted in this application is as follows:

[0006] A stroke-free, dual-way valve, comprising:

[0007] The valve body includes a valve housing and a valve core rotatably disposed within the valve housing;

[0008] A cylinder, wherein the cylinder is fixed to the valve housing by a cylinder seat;

[0009] A transmission system, wherein the transmission system is driven by the cylinder to rotate the valve core within the valve housing;

[0010] A thin-walled protective cover is detachably mounted outside the valve housing and covers the transmission system.

[0011] Optionally, the cylinder seat includes a seat plate and a connecting plate. The cylinder is mounted on the seat plate, and the connecting plate is integrally formed on both ends of the seat plate. The connecting plate is bolted to the end caps on both ends of the valve housing.

[0012] Optionally, the transmission system includes a gear and a rack, the gear being coaxially arranged with the valve core, and the rack being fixed to the output end of the cylinder and meshing with the gear.

[0013] Optionally, a limiting seat is also provided on the outer side of the valve housing to keep the rack engaged with the gear.

[0014] Optionally, the limiting seat includes a mounting plate and an inclined rib. The mounting plate is fixedly connected to the valve body by bolts. The inclined rib is integrally formed with the mounting plate and is used to press the rack against the gear.

[0015] Optionally, the inclined rib plate is provided with a PTFE limiting pad that fits against the rack on the side facing the rack.

[0016] Optionally, the outer side of the valve housing is provided with a plurality of perforated lugs for mounting the thin-walled cover, and the thin-walled cover is mounted on the perforated lugs.

[0017] Optionally, the thin-walled cover is provided with a threaded hole corresponding to the perforated ear plate, and a bolt for fixing the perforated ear plate is provided in the threaded hole.

[0018] Optionally, the thin-walled shield has a cylinder rod inlet on the side facing the cylinder.

[0019] Optionally, when the cylinder extends, the valve core changes from a straight-through to a side-through configuration, and when the cylinder shortens, the valve core changes from a side-through to a straight-through configuration.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The present application proposes a stroke-free dual-way valve. Compared with the traditional stroke-shell installation method, this new type of valve directly fixes the cylinder seat to the valve body or end cover, eliminating the use of the stroke-shell as the cylinder mounting carrier. It utilizes a thin-walled protective cover to protect the transmission system. The thin-walled protective cover is lightweight and is not fixed to the cylinder, making it easier and simpler to install and remove, and making the operation safer. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the stroke-free shell dual-way valve provided in the embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the stroke-free housing dual-way valve provided in the embodiments of this application after removing the thin-walled protective cover;

[0024] Figure 3 This is a schematic diagram showing the connection of the stroke-free housing dual-way valve provided in the embodiment of this application when the cylinder is in the extended state.

[0025] Explanation of the labels in the attached drawings:

[0026] 1-Valve housing, 2-Valve core, 3-Cylinder, 4-Cylinder seat, 401-Seat plate, 402-Connecting plate, 5-Rack, 6-Gear, 7-Thin-walled cover, 8-Hear plate with holes, 9-Limit seat, 10-PTFE limit pad. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] See attached document Figure 1As shown, this application embodiment provides a stroke-free housing dual-way valve, including a valve body, a cylinder 3, a transmission system, and a thin-walled protective cover 7. The valve body includes a valve shell 1 and a valve core 2. The valve core 2 is rotatably disposed inside the valve shell 1. The rotation of the valve core 2 realizes the straight-through and side-through adjustment of the valve body. The cylinder 3 is fixedly mounted on a cylinder seat 4, which is fixed on the valve shell 1. The transmission system is driven by the cylinder 3 to drive the valve core 2 to rotate inside the valve shell 1. The thin-walled protective cover 7 is detachably disposed outside the valve shell 1 and covers the transmission system. The side of the thin-walled protective cover 7 facing the cylinder 3 is provided with a cylinder rod inlet. The cylinder rod of the cylinder 3 extends into the thin-walled protective cover 7 from the cylinder rod inlet and connects to the transmission system. This new design adopts a split design of thin-walled cover 7 and cylinder 3, abandoning the traditional method of fixing cylinder 3 to the stroke housing, thus avoiding the defects of the stroke housing being large and heavy. Since the thin-walled cover 7 is lightweight and is installed separately on the valve housing 1, it is very convenient to disassemble and install the thin-walled cover 7 during inspection and maintenance.

[0032] Specifically:

[0033] To enable the cylinder 3 to be mounted on the valve housing 1, as shown in Figure 1, the cylinder seat 4 includes a seat plate 401 and a connecting plate 402. The connecting plate 402 is integrally formed on both ends of the seat plate 401. Bolt holes are provided on the connecting plate 402. After aligning the bolt holes on the connecting plate 402 with the bolt holes on the end caps at both ends of the valve housing 1, the cylinder 3 is fixedly mounted on the seat plate 401 by bolts, thus the cylinder seat 4 is fixed on the valve housing 1.

[0034] In one embodiment, to achieve rotation of the valve core 2, such as... Figure 2 As shown, the transmission system includes a gear 6 and a rack 5. The gear 6 is located outside the valve housing 1, and the valve core 2 is rotatably mounted inside the valve housing 1 via a rotating shaft. The gear 6 and the valve core 2 are coaxially arranged. The rack 5 is fixed to the output end of the cylinder 3 and meshes with the gear 6. It is conceivable that... Figure 3 As shown, when cylinder 3 extends, it drives gear 6 to rotate via rack 5. Gear 6 then drives the rotating shaft carrying valve core 2 from straight-through to side-through. Conversely, when cylinder 3 retracts, it drives gear 6 to rotate via rack 5. Gear 6 then drives the rotating shaft carrying valve core 2 from side-through to straight-through. Since the resistance encountered when switching from straight-through to side-through is greater than that when switching from side-through to straight-through, and the thrust of cylinder 3 is greater than its pulling force, this new design adjusts the switching from straight-through to side-through to the pushing force of cylinder 3, and the switching from side-through to straight-through to the pulling force of cylinder 3, making the rotation of the equipment more efficient.

[0035] Of course, in order to ensure that the rack 5 and gear 6 remain in contact and do not slip during the extension and retraction of cylinder 3, as described above, Figure 2As shown, a limiting seat 9 is also provided on the outside of the valve body 1 to keep the rack 5 meshing with the gear 6. Specifically, the limiting seat 9 includes a mounting plate 401 and an inclined rib. The mounting plate 401 is fixedly connected to the outer wall of the valve body 1 by bolts. The inclined rib is integrally formed vertically in the middle of the mounting plate 401, and a PTFE limiting pad 10 is provided on the side of the inclined rib facing the rack 5. The PTFE limiting pad 10 fits against the rack 5 and limits the movement of the rack 5, ensuring that the rack 5 always meshes with the gear 6.

[0036] In this embodiment, to achieve the detachable installation of the thin-walled protective cover 7 on the valve housing 1, as follows: Figure 2 As shown, multiple perforated lugs 8 for mounting thin-walled covers 7 are provided on the outer wall of the valve body 1. The thin-walled cover 7 has threaded holes corresponding to the perforated lugs 8, and bolts for fixing to the perforated lugs 8 are installed in the threaded holes. The thin-walled cover 7 is mounted on the valve body 1 by these bolts. To remove the thin-walled cover 7, simply unscrew the bolts.

[0037] In summary, the stroke-free shell-less dual-way valve provided in this application has the following advantages:

[0038] Advantage 1: Compared with the traditional travel housing installation method, the equipment is lighter and saves costs.

[0039] Advantage 2: Traditional dual-way valves require disassembling the stroke housing during maintenance and disassembly. The stroke housing is also fixed with a cylinder, which is very troublesome and often involves working at height, posing a safety hazard. The thin-walled protective cover of this new stroke housing-free dual-way valve is very lightweight and is set independently of the cylinder, making it easy to remove.

[0040] Advantage 3: Since the resistance encountered when switching from a straight passage to a side passage is greater than that when switching from a side passage to a straight passage, and the cylinder thrust is greater than the pulling force, this new model adjusts the switching from a straight passage to a side passage to a cylinder push, and the switching from a side passage to a straight passage to a cylinder pull, making the rotation of the equipment more reasonable.

[0041] Advantage 4: Traditional dual-way valves control the cylinder stroke through the limit bolts on the stroke housing. This can cause the bolts to be bent by the cylinder, leading to valve core misalignment and material leakage into another passage. In contrast, the stroke-free dual-way valve calculates the gear size through the cylinder stroke to achieve the exact rotation angle, and uses the cylinder itself for limiting, thus eliminating the limit bolts and avoiding valve core misalignment.

[0042] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A stroke-free, dual-way valve, characterized in that, include: The valve body includes a valve housing and a valve core rotatably disposed within the valve housing; A cylinder, wherein the cylinder is fixed to the valve housing by a cylinder seat; A transmission system, wherein the transmission system is driven by the cylinder to rotate the valve core within the valve housing; A thin-walled protective cover is detachably mounted outside the valve housing and covers the transmission system.

2. The stroke-free dual-way valve according to claim 1, characterized in that, The cylinder seat includes a seat plate and a connecting plate. The cylinder is mounted on the seat plate, and the connecting plate is integrally formed on both ends of the seat plate. The connecting plate is bolted to the end caps on both ends of the valve body.

3. The stroke-free dual-way valve according to claim 1, characterized in that, The transmission system includes a gear and a rack. The gear is coaxially arranged with the valve core, and the rack is fixed to the output end of the cylinder and meshes with the gear.

4. The stroke-free dual-way valve according to claim 3, characterized in that, The outer side of the valve housing is also provided with a limiting seat to keep the rack engaged with the gear.

5. The stroke-free dual-way valve according to claim 4, characterized in that, The limiting seat includes a mounting plate and an inclined rib. The mounting plate is fixedly connected to the valve body by bolts. The inclined rib is integrally formed with the mounting plate and is used to press the rack against the gear.

6. The stroke-free dual-way valve according to claim 5, characterized in that, The inclined rib plate has a PTFE limiting pad that fits against the rack on the side facing the rack.

7. The stroke-free dual-way valve according to claim 1, characterized in that, The outer side of the valve housing is provided with a plurality of perforated lugs for mounting the thin-walled cover, and the thin-walled cover is mounted on the perforated lugs.

8. The stroke-free dual-way valve according to claim 7, characterized in that, The thin-walled cover has a threaded hole corresponding to the perforated ear plate, and a bolt for fixing the perforated ear plate is provided in the threaded hole.

9. The stroke-free dual-way valve according to claim 1, characterized in that, The thin-walled shield has a cylinder rod inlet on the side facing the cylinder.

10. The stroke-free dual-way valve according to claim 1, characterized in that, When the cylinder extends, the valve core changes from straight-through to side-through, and when the cylinder shortens, the valve core changes from side-through to straight-through.

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