Self-positioning driving device and matched valve thereof

Abstract

The utility model discloses a self-positioning driving device and a matched valve thereof. The self-positioning driving device comprises a positioning bush arranged on a valve seat, a driving handle connected with the tail end of the top of a valve shaft, and a self-positioning mechanism elastically arranged on the driving handle. A valve shaft of the valve is matched with the self-positioning driving device for use, and the tail end of the top of the valve shaft of the valve is a flat shaft, a circular shaft or a square shaft. The positioning bush capable of pointing to the direction of the pipeline is arranged between the valve seat and the driving handle and is mechanically matched with the self-positioning mechanism arranged on the driving handle, so that when the driving handle is rotated, accurate switching of the pipeline is realized by utilizing the matching of the positioning pin and the pointing hole in the positioning bush, and the working efficiency is improved. Meanwhile, auditory and visual prompts of pipeline switching in place are given to an operator, whether the material channel on the valve shaft is aligned with the pipeline on the valve seat or not can be conveniently distinguished, materials are prevented from entering the wrong pipeline, operation is easy, and safe production is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a self-positioning drive device and a matching valve thereof. Background Art

[0002] In industrial or civil infrastructure, pipelines are often used to transport media. Due to changes in pressure or temperature, the pipelines must be adjusted, and valves are used in the pipelines to adjust the flow to ensure optimal working conditions and environmental safety.

[0003] Generally, the easiest way to open or close or switch the pipeline of the valve is to fix the handle to the valve shaft, and turn the handle to control the valve shaft to open or close or switch the pipeline. At present, most valves have different markings on the visible part of the valve body or handle, such as engraving or different color markings, to indicate the position of the valve shaft. Although the marking can prompt the operator to switch the direction, it is not known whether the channel on the valve shaft is completely connected with the flow channel of the valve seat. Therefore, it is easy to cause gas mixing between the channels, resulting in waste of production materials and hidden dangers of valve leakage. Summary of the invention

[0004] In order to overcome the above defects, the utility model provides a self-positioning drive device and a matching valve thereof.

[0005] A technical solution adopted by the utility model to solve the technical problem is to provide a self-positioning drive device, comprising:

[0006] A positioning bushing is arranged on the valve seat, the positioning bushing comprises a through hole coaxially arranged with the valve shaft and through which the valve shaft passes, a connecting portion matched with the valve seat, and a positioning portion arranged on the connecting portion, wherein the positioning portion is provided with a directional hole consistent with the position of each pipeline on the valve seat;

[0007] A driving handle, wherein the rear end of the driving handle is a force-applying portion, and the front end is a matching portion connected to the valve shaft, and the matching portion is provided with an axial hole and a locking hole, the axial hole is coaxially arranged with the valve shaft, and the locking hole is arranged perpendicular to the axis of the valve shaft and communicated with the axial hole; when the valve shaft passes through the through hole and is connected to the driving handle by a fastener, the positioning portion is placed in the axial hole;

[0008] The self-positioning mechanism is arranged in the locking hole, and comprises a positioning pin elastically arranged in the locking hole, so that when the locking hole is directly opposite to any of the pointing holes, the end of the positioning pin is inserted into the corresponding pointing hole.

[0009] As a further improvement of the present utility model, the locking hole is provided on a side of the matching portion away from the force-applying portion, and the positioning pin is provided on an end close to the shaft hole;

[0010] The self-positioning mechanism also includes:

[0011] A fixing screw is arranged at one end of the locking hole away from the shaft hole;

[0012] The spring is arranged between the positioning pin and the fixing screw, and two ends of the spring are elastically abutted against the positioning pin and the fixing screw respectively.

[0013] As a further improvement of the utility model, the locking hole is a stepped hole formed by a first section hole, a second section hole and a third section hole which are connected in sequence, the fixing screw is threadedly connected to the third section hole, and the spring is arranged in the second section hole;

[0014] The positioning pin has a head portion adapted to the directional hole, a limiting portion adapted to the second section hole, and a stroke portion integrally connected between the head portion and the limiting portion, and the length of the stroke portion is consistent with the axial length of the first section hole.

[0015] As a further improvement of the present invention, the travel portion is a cylindrical structure, and the head is a hemispherical shape having the same radius as the travel portion.

[0016] As a further improvement of the utility model, the connecting portion is provided with clamping grooves at both ends along the radial direction, and the valve seat is provided with a clamping block which is installed in cooperation with the clamping grooves;

[0017] There are multiple directional holes on the positioning portion, and the multiple directional holes are evenly arranged along the circumferential direction, and a side of each directional hole away from the through hole is connected to the outer peripheral surface of the positioning portion through a rounded transition.

[0018] As a further improvement of the present invention, the pointing hole is clearance-matched with the head of the locating pin, and when an external force is applied to rotate the driving handle relative to the locating sleeve, the outer peripheral surface of the locating portion can drive the locating pin to move along its axis.

[0019] As a further improvement of the utility model, a special-shaped hole is further provided in the middle of the matching portion, the special-shaped hole is coaxially arranged with the shaft hole, and the special-shaped hole is used to match with the flat shaft, round shaft or square shaft at the top end of the valve shaft;

[0020] A mounting hole for a fastener to pass horizontally is provided on one side of the matching portion adjacent to the force-applying portion, and the mounting hole is connected to the special-shaped hole. The fastener passes through the mounting hole and matches with the end of the valve shaft to connect the driving handle and the valve shaft together.

[0021] As a further improvement of the utility model, the driving handle is integrally formed by injection molding or casting, and the horizontal cross-section of the end of the matching portion away from the force-applying portion is in the shape of an isosceles trapezoid;

[0022] The positioning bushing and the positioning pin are respectively made of hard wear-resistant alloy.

[0023] Another technical solution adopted by the utility model to solve its technical problem is to provide a valve, characterized in that: the valve shaft of the valve is used in conjunction with the above-mentioned self-positioning drive device, and the top end of the valve shaft of the valve is a flat shaft, a round shaft or a square shaft.

[0024] The beneficial effects of the utility model are as follows: by providing a positioning sleeve that can point to the direction of the pipeline between the valve seat and the driving handle, and mechanically cooperating with the self-positioning mechanism provided on the driving handle, when the driving handle is rotated, the positioning pin and the pointing hole on the positioning sleeve cooperate to achieve accurate switching of the pipeline, and at the same time give the operator a tactile and auditory prompt that the pipeline is switched into place, which is helpful for distinguishing whether the material channel on the valve shaft is aligned with the pipeline on the valve seat, avoiding material from entering the wrong pipeline, and is simple to operate and ensures safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the valve structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the exploded structure of the self-positioning drive device of the utility model;

[0027] Figure 3 It is a cross-sectional schematic diagram of the utility model in the BB direction;

[0028] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 5 This is a schematic diagram of the exploded structure of the valve of the utility model.

[0030] Combined with the accompanying drawings, the following description is given:

[0031] 00, valve seat; 001, clamping block; 01, valve shaft; 1, positioning bushing; 11, through hole; 12, connecting part; 121, clamping groove; 13, positioning part; 131, pointing hole; 132, rounded corner; 2, driving handle; 21, force-applying part; 22, matching part; 221, shaft hole; 222, locking hole; 2221, first section hole; 2222, second section hole; 2223, third section hole; 223, special-shaped hole; 224, mounting hole; 23, fastener; 3, self-positioning mechanism; 31, positioning pin; 311, head; 312, limit part; 313, stroke part; 32, fixing screw; 33, spring. DETAILED DESCRIPTION

[0032] A preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.

[0033] See also Figures 1 to 3 The utility model provides a self-positioning drive device, comprising a positioning bushing 1 arranged on a valve seat 00, a driving handle 2 connected to the top end of a valve shaft 01, and a self-positioning mechanism 3 elastically arranged on the driving handle 2.

[0034] Specifically, the positioning sleeve 1 includes a through hole 11 coaxially arranged with the valve shaft 01 and for the valve shaft 01 to pass through, a connecting portion 12 cooperating with the valve seat 00, and a positioning portion 13 arranged on the connecting portion 12, and the positioning portion 13 is provided with pointing holes 131 consistent with the positions of each pipeline on the valve seat 00; that is, the number of pointing holes 131 is consistent with the number of pipelines on the valve seat 00, and the central axis of each pointing hole 131 is parallel to the central axis of the corresponding pipeline and is on the same vertical plane, that is, one pointing hole 131 marks a pipeline direction.

[0035] The rear end of the driving handle 2 is a force-applying portion 21, and the front end is a matching portion 22 connected to the valve shaft 01. The matching portion 22 is provided with an axial hole 221 and a locking hole 222. The axial hole 221 is coaxially arranged with the valve shaft 01, and the locking hole 222 is arranged perpendicular to the axis of the valve shaft 01 and communicates with the axial hole 221. When the valve shaft 01 passes through the through hole 11 and is connected to the driving handle 2 through the fastener 23, the positioning portion 13 is placed in the axial hole 221. That is, when an external force is applied to rotate the driving handle 2 relative to the central axis of the positioning bushing 1, the valve shaft 01 connected to the matching portion 22 of the driving handle 2 rotates synchronously, thereby realizing the opening, closing or switching of the pipeline.

[0036] The self-positioning mechanism 3 is arranged in the locking hole 222, including a positioning pin 31 elastically arranged in the locking hole 222, so that when the locking hole 222 is opposite to any pointing hole 131, the end of the positioning pin 31 is inserted into the corresponding pointing hole 131. That is to say, when an external force is applied to rotate the driving handle 2, the synchronous self-positioning mechanism 3 rotates together with it relative to the central axis of the positioning bushing 1, so that when the locking hole 222 and the pointing hole 131 are opposite, the positioning pin 31 placed in the locking hole 222 extends from the locking hole 222 and inserts into the pointing hole 131 under the action of the elastic force, which also indicates that the pipeline switching is completed. Of course, when the driving handle 2 and the valve shaft 01 are connected, the central axis of the material channel of the valve shaft 01 and the central axis of the pipeline of the valve seat 00 are on the same vertical plane, thereby ensuring that when the locking hole 222 and the pointing hole 131 are opposite, the material channel of the valve shaft 01 and the pipeline of the valve seat 00 are opposite.

[0037] The utility model uses mechanical coordination to indicate the switching state of the pipeline to ensure the switching accuracy. In addition, as a preferred embodiment, the positioning bushing 1 and the positioning pin 31 are made of hard wear-resistant alloy. Therefore, when the positioning pin 31 extends from the locking hole 222 and inserts into the pointing hole 131, a clear metal impact sound of "click" can be emitted, giving the operator an auditory perception to prevent the operator from continuously exerting force to rotate the driving handle.

[0038] See also Figure 3 and 4 A locking hole 222 is provided on the side of the matching portion 22 away from the force-applying portion 21, and a positioning pin 31 is provided at one end close to the shaft hole 221; the self-positioning mechanism 3 also includes a fixing screw 32 and a spring 33, the spring 33 is provided between the positioning pin 31 and the fixing screw 32, and the two ends of the spring 33 are elastically abutted against the positioning pin 31 and the fixing screw 32 respectively.

[0039] In order to ensure that the locating pin 31 is inserted into the pointing hole 131 to a depth where the locating pin 31 is inserted into the pointing hole 131 or retracted into the locking hole 222 under the action of the elastic force of the spring 33, the locking hole 222 is a stepped hole formed by a first hole 2221, a second hole 2222 and a third hole 2223 that are connected in sequence. The fixing screw 32 is threadedly connected to the third hole 2223, and the spring 33 is arranged in the second hole 2222.

[0040] The positioning pin 31 has a head 311 adapted to the pointing hole 131, a limiting portion 32 adapted to the second section hole 2222, and a stroke portion 313 integrally connected between the head 311 and the limiting portion 312. The length of the stroke portion 313 is consistent with the axial length of the first section hole 2221, thereby limiting the maximum distance that the head 311 of the positioning pin 31 can extend. The stroke portion 313 is a cylindrical structure, and the head 311 is a hemispherical shape consistent with the radius of the stroke portion 313. Since the head 311 of the positioning pin 31 is an arc surface, when the head 311 of the positioning pin 31 is inserted into the pointing hole 131, the operator needs to increase the force to overcome the elastic force of the spring 33, and the head 311 of the positioning pin 31 uses its arc structure to slide out of the pointing hole 131 to achieve the continued rotation of the driving handle 2, thereby meeting the pipeline switching use of the multi-pipeline valve.

[0041] Continue to see Figure 2 The structure of the positioning bushing 1 is that the connecting portion 12 is provided with slots 121 at both ends along the radial direction thereof, and the valve seat 00 is provided with a block 001 which is installed in cooperation with the slots 121. It is conceivable that screws can be used for fixing.

[0042] There are multiple pointing holes 131 on the positioning part 13, and the multiple pointing holes 131 are evenly arranged along the circumferential direction, and the side of each pointing hole 131 away from the through hole 11 is transitionally connected to the outer peripheral surface of the positioning part 13 through a rounded corner 132. The rounded corner 132 transitional connection is selected to facilitate the head of the positioning pin 31 to slide out of the pointing hole 131, while limiting the positioning pin and preventing it from getting stuck. The pointing hole 131 and the head 311 of the positioning pin 31 are clearance-matched, and when an external force is applied to rotate the driving handle 2 relative to the positioning bushing 1, the outer peripheral surface of the positioning part 13 can drive the positioning pin 31 to move along its axis, that is, under the action of the elastic force of the spring 33, the positioning pin 31 can telescopically move along its axis.

[0043] Continue to see Figure 3 A special-shaped hole 223 is also provided in the middle of the matching portion 22. The special-shaped hole 223 is coaxially arranged with the shaft hole 221. The special-shaped hole 223 is used to cooperate with the flat shaft, round shaft or square shaft at the top end of the valve shaft 01; a mounting hole 224 for the fastener 23 to pass horizontally is provided on the side of the matching portion 22 adjacent to the force-applying portion 21, and the mounting hole 224 is communicated with the special-shaped hole 223. The fastener 23 passes through the mounting hole 224 and cooperates with the end of the valve shaft 01, so as to connect the driving handle 2 with the valve shaft 01.

[0044] The driving handle 2 is integrally formed by injection molding or casting, and the horizontal cross-section of the end of the matching portion 22 away from the force-applying portion 21 is in an isosceles trapezoidal shape, so that the front end of the driving handle has an "arrow" visual effect. The pointing hole 131 is located in the isosceles trapezoidal structure, thereby giving the operator a visual indication to identify the valve seat pipeline.

[0045] See also Figure 5 The utility model also provides a valve, the valve shaft of the valve is used in conjunction with the above-mentioned self-positioning drive device, and the top end of the valve shaft of the valve is a flat shaft, a round shaft or a square shaft. The figure provides a four-way ball valve as an example, and all valves using the above-mentioned drive handle are within the protection scope of the utility model. Among them, the valve is preferably a butterfly valve or a ball valve.

[0046] To sum up, the self-positioning drive device and its matching valve provided by the utility model, by arranging a positioning sleeve that can point to the direction of the pipeline between the valve seat and the driving handle, and mechanically cooperating with the self-positioning mechanism arranged on the driving handle, so that when the driving handle is rotated, the positioning pin and the pointing hole on the positioning bushing are used to cooperate to achieve precise switching of the pipeline, and at the same time give the operator auditory and visual prompts that the pipeline is switched into place, which is conducive to distinguishing whether the material channel on the valve shaft is aligned with the pipeline on the valve seat, avoiding material entering the wrong pipeline, and simple operation to ensure safe production.

[0047] In the above description, many specific details are described to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited by the specific implementation disclosed above. At the same time, any person familiar with the technical field can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A self-positioning drive device, characterized in that: include: A positioning bushing (1) is arranged on a valve seat (00), the positioning bushing (1) comprising a through hole (11) coaxially arranged with the valve shaft (01) and through which the valve shaft (01) passes, a connecting portion (12) matched with the valve seat (00), and a positioning portion (13) arranged on the connecting portion (12), the positioning portion (13) being provided with directional holes (131) consistent with the positions of various pipelines on the valve seat (00); A driving handle (2), wherein the rear end of the driving handle (2) is a force-applying portion (21), and the front end is a matching portion (22) connected to the valve shaft (01), and the matching portion (22) is provided with an axial hole (221) and a locking hole (222), the axial hole (221) is coaxially arranged with the valve shaft (01), and the locking hole (222) is arranged perpendicular to the axis of the valve shaft (01) and communicates with the axial hole (221); when the valve shaft (01) passes through the through hole (11) and is connected to the driving handle (2) via a fastener (23), the positioning portion (13) is disposed in the axial hole (221); The self-positioning mechanism (3) is disposed in the locking hole (222), and comprises a positioning pin (31) elastically disposed in the locking hole (222), so that when the locking hole (222) is directly opposite to any of the pointing holes (131), the end of the positioning pin (31) is inserted into the corresponding pointing hole (131).

2. The self-positioning drive device according to claim 1, characterized in that: The locking hole (222) is provided on a side of the matching portion (22) away from the force-applying portion (21), and the positioning pin (31) is provided on an end close to the shaft hole (221); The self-positioning mechanism (3) also includes: A fixing screw (32) is disposed at an end of the locking hole (222) away from the shaft hole (221); The spring (33) is disposed between the positioning pin (31) and the fixing screw (32), and two ends of the spring (33) are elastically abutted against the positioning pin (31) and the fixing screw (32), respectively.

3. The self-positioning drive device according to claim 2, characterized in that: The locking hole (222) is a stepped hole formed by a first hole (2221), a second hole (2222) and a third hole (2223) which are connected in sequence, the fixing screw (32) is threadedly connected to the third hole (2223), and the spring (33) is arranged in the second hole (2222); The positioning pin (31) comprises a head portion (311) adapted to the pointing hole (131), a limiting portion (312) adapted to the second section hole (2222), and a travel portion (313) integrally connected between the head portion (311) and the limiting portion (312), wherein the length of the travel portion (313) is consistent with the axial length of the first section hole (2221).

4. The self-positioning drive device according to claim 3, characterized in that: The travel portion (313) is a cylindrical structure, and the head portion (311) is a hemispherical shape having a radius consistent with that of the travel portion (313).

5. The self-positioning drive device according to claim 4, characterized in that: The connecting portion (12) is provided with clamping grooves (121) at both ends along the radial direction thereof, and the valve seat (00) is provided with a clamping block (001) mounted in cooperation with the clamping grooves (121); A plurality of directional holes (131) are provided on the positioning portion (13), the plurality of directional holes (131) are evenly arranged along the circumferential direction, and a side of each directional hole (131) facing away from the through hole (11) is transitionally connected to the outer peripheral surface of the positioning portion (13) via a rounded corner (132).

6. The self-positioning drive device according to claim 5, characterized in that: The pointing hole (131) is clearance-matched with the head (311) of the positioning pin (31), and when an external force is applied to rotate the driving handle (2) relative to the positioning bushing (1), the outer peripheral surface of the positioning portion (13) can drive the positioning pin (31) to move along its axis.

7. The self-positioning drive device according to claim 6, characterized in that: A special-shaped hole (223) is also provided in the middle of the matching portion (22), the special-shaped hole (223) is coaxially arranged with the shaft hole (221), and the special-shaped hole (223) is used to match with the flat shaft, round shaft or square shaft at the top end of the valve shaft (01); A mounting hole (224) for a fastener (23) to pass horizontally is provided on one side of the matching portion (22) adjacent to the force-applying portion (21), and the mounting hole (224) is communicated with the special-shaped hole (223). The fastener (23) passes through the mounting hole (224) and matches with the end of the valve shaft (01) to connect the driving handle (2) and the valve shaft (01) together.

8. The self-positioning drive device according to claim 7, characterized in that: The driving handle (2) is integrally formed by injection molding or casting, and a horizontal cross-section of an end of the matching portion (22) away from the force-applying portion (21) is in the shape of an isosceles trapezoid; The positioning bushing (1) and the positioning pin (31) are respectively made of hard wear-resistant alloy.

9. A valve, characterized in that: The valve shaft (01) of the valve is used in conjunction with the self-positioning drive device as described in any one of claims 1 to 8, and the top end of the valve shaft (01) of the valve is a flat shaft, a round shaft or a square shaft.

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