Telescopic gate valve

Abstract

The utility model discloses a telescopic gate valve which comprises a shell, a lower valve body is installed on the inner wall of the shell, an outer sleeve is movably connected to the outer wall of the lower valve body, an adjusting device is arranged on the inner wall of the shell, and the adjusting device comprises two threaded rods which are rotationally connected to the inner wall of the shell through bearings; the two side plates are in threaded connection with the outer walls of the two threaded rods correspondingly and fixedly connected with the outer wall of the outer sleeve; the two bevel gear sets are installed on the outer walls of the two threaded rods correspondingly. And the two rotating rods are installed on the outer walls of the two bevel gear sets correspondingly and rotationally connected to the inner wall of the shell through bearings. According to the telescopic gate valve, the position of the outer sleeve is adjusted through the adjusting device, in this way, a plurality of threaded rods do not need to be sequentially installed on the inner wall of the outer sleeve and the inner wall of the valve, and therefore the adjusting and fixing efficiency of the outer sleeve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a telescopic gate valve. Background Art

[0002] The gate valve is a gate disc of an opening and closing part. The movement direction of the gate disc is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the gate disc. Usually, the sealing surface will be welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate disc has rigid gate disc and elastic gate disc. According to the different gate discs, the gate valve is divided into rigid gate valve and elastic gate valve;

[0003] When the current gate valve is in use, bolts are used to connect one side of the gate valve to the pipeline. After the gate valve is fixed, the position of the outer sleeve is adjusted so that the outer sleeve fits the medium pipeline together, and bolts are used to connect the outer sleeve and the pipeline together. When the interval between the medium pipelines on both sides is large, the outer sleeve can cooperate with the gate valve to connect the medium pipelines on both sides together.

[0004] During the use of traditional gate valves, the telescopic gate valve is placed on the inner side of the medium pipeline, and the position of the outer sleeve is adjusted so that the telescopic gate valve and the outer sleeve fit the inner sides of the medium pipelines on both sides. The telescopic gate valve and the medium pipelines on both sides are connected together by fixing screws. Since the outer sleeve is fixed to the outer wall of the gate valve by multiple threaded rods after adjustment, the fixing method of multiple threaded rods is relatively cumbersome, thereby reducing the fixing efficiency of the outer sleeve. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a retractable gate valve, which solves the problem that in the use of traditional gate valves, the retractable gate valve is placed on the inner side of the medium pipeline, and the position of the outer sleeve is adjusted so that the retractable gate valve fits the inner sides of the medium pipelines on both sides in conjunction with the outer sleeve, and the retractable gate valve and the medium pipelines on both sides are connected together by fixing screws. Since the outer sleeve is fixed to the outer wall of the gate valve by multiple threaded rods after adjustment, the fixing method of the multiple threaded rods is relatively cumbersome, thereby reducing the fixing efficiency of the outer sleeve.

[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a retractable gate valve, comprising a shell, the inner wall of the shell is provided with a lower valve body, the outer wall of the lower valve body is movably connected to an outer sleeve, the inner wall of the shell is provided with an adjustment device, the adjustment device comprising: two threaded rods, both of which are rotatably connected to the inner wall of the shell through bearings; two side plates are provided, which are respectively threadedly connected to the outer walls of the two threaded rods and are both fixedly connected to the outer wall of the outer sleeve; two bevel gear sets are provided, which are respectively installed on the outer walls of the two threaded rods; two rotating rods are provided, which are respectively installed on the outer walls of the two bevel gear sets and are both rotatably connected to the inner wall of the shell through bearings; a transmission mechanism is installed at the top of the two rotating rods; a handwheel is installed at the top of the transmission mechanism; wherein, the handwheel drives the two bevel gear sets at the bottom of the two rotating rods to rotate through the transmission mechanism, and the two bevel gear sets drive the outer sleeves on the inner sides of the two side plates to move through the two threaded rods.

[0007] Preferably, the inner wall of the lower valve body is pressed against two gate plates, a connecting block is provided on the back side of the two gate plates via a pin shaft, and two limiting rods are installed on the outer wall of the connecting block.

[0008] Preferably, the upper valve body is mounted on the top of the lower valve body via a fixed screw, a valve stem is mounted on the top of the connecting block, the outer wall of the valve stem is movably connected to the inner wall of the upper valve body, and a screw is mounted on the top of the valve stem.

[0009] Preferably, the inner wall of the upper valve body is rotatably connected to a twist wheel via a bearing, and the inner wall of the twist wheel is threadedly connected to the outer wall of the screw rod.

[0010] Preferably, a labor-saving device is provided on the top of the twist wheel, and the labor-saving device includes: an arc plate, installed on the outer wall of the twist wheel; a straight plate, installed on the outer wall of the arc plate; a bolt, threadedly connected to the inner wall of the straight plate; a round rod, rotatably connected to the inner wall of the arc plate through a pin shaft, and clamped with one end of the bolt; wherein, when the bolt is twisted, it is no longer clamped with the inner wall of the round rod, and the round rod rotates one hundred and eighty degrees, thereby increasing the torque of the twist wheel.

[0011] Beneficial effects

[0012] The utility model provides a retractable gate valve. It has the following beneficial effects: The retractable gate valve drives the twist wheel to rotate, which in turn drives the connecting block at the bottom of the valve stem to move via the screw rod. The connecting block drives the gate plate to press against the interior of the lower valve body, closing the lower valve body. The position of the outer sleeve is adjusted by an adjustment device. This method does not require the installation of multiple threaded rods in sequence on the outer sleeve and the inner wall of the valve, thereby improving the adjustment and fixing efficiency of the outer sleeve.

[0013] The labor-saving device increases the torsion of the torsion wheel, when the gate valve is not used for a long time, the circular rod is turned outward, the circular rod is held to drive the torsion wheel to rotate, the circular rod is reset after use, and more space is not occupied. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is Figure 1 a sectional structure schematic diagram;

[0016] Figure 3 It is Figure 2 a connection structure schematic diagram of the threaded rod, the side plate and the bevel gear set;

[0017] Figure 4 It is Figure 2 a connection structure schematic diagram of the arc plate, the side plate and the bolt.

[0018] In the figure: 1, shell; 2, adjusting device; 21, threaded rod; 22, side plate; 23, bevel gear set; 24, rotating rod; 25, transmission mechanism; 26, hand wheel; 3, outer sleeve; 4, lower valve body; 5, gate plate; 6, connecting block; 7, limiting rod; 8, upper valve body; 9, labor-saving device; 91, arc plate; 92, straight plate; 93, bolt; 94, circular rod; 10, valve rod; 11, screw rod; 12, torsion wheel. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Through the personnel in the art, the parts in the case are connected in sequence, and the specific connection and operation sequence should be referred to the following working principle, and the detailed connection means is the known technology in the art, and the following mainly introduces the working principle and process.

[0021] In the use process of the traditional gate valve, the telescopic gate valve is placed on the inner side of the medium pipeline, the position of the outer sleeve is adjusted, the telescopic gate valve is matched with the outer sleeve to be attached to the inner side of the medium pipeline on both sides, the telescopic gate valve and the medium pipeline on both sides are connected together through the fixed screw rod, and after the adjustment of the outer sleeve, the outer sleeve is fixed on the outer wall of the gate valve through a plurality of threaded rods. The fixing mode of the plurality of threaded rods is relatively complicated, so that the fixing efficiency of the outer sleeve is reduced.

[0022] In view of this, the utility model provides a retractable gate valve, which drives the torsion wheel to rotate and drives the connecting block at the bottom of the valve stem to move through the screw rod. The connecting block drives the gate plate to press against the inside of the lower valve body to close the lower valve body. The position of the outer sleeve is adjusted by the adjustment device. This method does not require multiple threaded rods to be installed in the outer sleeve and the inner wall of the valve in sequence, thereby improving the adjustment and fixing efficiency of the outer sleeve.

[0023] Example 1: By Figure 1 、 2 , 3 and 4 show that a retractable gate valve comprises a shell 1, a lower valve body 4 is mounted on the inner wall of the shell 1, an outer sleeve 3 is movably connected to the outer wall of the lower valve body 4, and an adjustment device 2 is provided on the inner wall of the shell 1, the adjustment device 2 comprises: two threaded rods 21, both of which are rotatably connected to the inner wall of the shell 1 through bearings; two side plates 22 are provided, which are respectively threadedly connected to the outer walls of the two threaded rods 21, and are both fixedly connected to the outer wall of the outer sleeve 3; two bevel gear sets 23 are provided, which are respectively mounted on the outer walls of the two threaded rods 21; two rotating rods 24 are provided, which are respectively mounted on the outer walls of the two bevel gear sets 23, and are both rotatably connected to the inner wall of the shell 1 through bearings; a transmission mechanism 25 is mounted on the top of the two rotating rods 24; a handwheel 26 is mounted on the top of the transmission mechanism 25; wherein the handwheel 26 drives the two bevel gear sets 23 at the bottom of the two rotating rods 24 to rotate through the transmission mechanism 25, and the two bevel gear sets 23 drive the outer sleeve 3 on the inner side of the two side plates 22 to move through the two threaded rods 21;

[0024] In the specific implementation process, it is worth noting that the bevel gear set 23 is composed of two meshing bevel gears, the transmission mechanism 25 is composed of two grooved wheels and a belt, the handwheel 26 drives the two bevel gear sets 23 at the bottom of the two rotating rods 24 to rotate through the transmission mechanism 25, the two bevel gear sets 23 drive the two side plates 22 to move through the two threaded rods 21, and the two side plates 22 drive the outer sleeve 3 to move. The inner wall of the outer sleeve 3 is provided with a sealing gasket, thereby ensuring the sealing of the connection between the outer sleeve 3 and the lower valve body 4;

[0025] Furthermore, two gate plates 5 are pressed against the inner wall of the lower valve body 4, and a connecting block 6 is rotated on the back of the two gate plates 5 through a pin shaft, and two limiting rods 7 are installed on the outer wall of the connecting block 6;

[0026] In the specific implementation process, it is worth noting that the connecting block 6 drives the two gate plates 5 to press against the inside of the lower valve body 4, and the two limit rods 7 limit the two gate plates 5 from rotating inward;

[0027] Furthermore, the upper valve body 8 is mounted on the top of the lower valve body 4 through a fixed screw, a valve stem 10 is mounted on the top of the connecting block 6, the outer wall of the valve stem 10 is movably connected to the inner wall of the upper valve body 8, and a screw rod 11 is mounted on the top of the valve stem 10;

[0028] In the specific implementation process, it is worth noting that the lower valve body 4 is installed together with the upper valve body 8 using a fixed screw, the upper valve body 8 limits the valve stem 10, and the screw rod 11 drives the connecting block 6 to move through the valve stem 10;

[0029] Furthermore, the inner wall of the upper valve body 8 is rotatably connected to a twist wheel 12 via a bearing, and the inner wall of the twist wheel 12 is threadedly connected to the outer wall of the screw rod 11;

[0030] In the specific implementation process, it is worth noting that the twist wheel 12 drives the screw rod 11 to move;

[0031] Specifically, when using the retractable gate valve, the hand wheel 26 is twisted to drive the rotating rod 24 to rotate through the transmission mechanism 25, and the rotating rod 24 drives the threaded rod 21 to move through the bevel gear set 23, and the threaded rod 21 drives the outer sleeve 3 to move through the side plate 22 to adjust the position of the outer sleeve 3. The staff drives the twist wheel 12 to drive the screw rod 11 to move, and the screw rod 11 drives the connecting block 6 to move through the valve stem 10. The connecting block 6 drives the two gate plates 5 to move downward, and the gate plates 5 are pressed against the inside of the lower valve body 4 to close the lower valve body 4.

[0032] Example 2: By Figure 1 、 2 As shown in Figures 4 and 5, a labor-saving device 9 is provided on the top of the twist wheel 12. The labor-saving device 9 includes: an arc plate 91, mounted on the outer wall of the twist wheel 12; a straight plate 92, mounted on the outer wall of the arc plate 91; a bolt 93, threadedly connected to the inner wall of the straight plate 92; a round rod 94, rotatably connected to the inner wall of the arc plate 91 by a pin, and clamped with one end of the bolt 93; wherein, when the torsion bolt 93 is rotated, it is no longer clamped with the inner wall of the round rod 94, and the round rod 94 rotates 180 degrees, thereby increasing the torque of the twist wheel 12;

[0033] In the specific implementation process, it is worth noting that the torsion bolt 93 is rotated and no longer engages with the inner wall of the round rod 94. The round rod 94 rotates outward 180 degrees, and the round rod 94 increases the torque of the torsion wheel 12;

[0034] Specifically, based on the above embodiment 1, the torsion bolt 93 is rotated and no longer engages with the inner wall of the round rod 94. The round rod 94 rotates outward 180 degrees. The round rod 94 increases the torque of the torsion wheel 12, and the torsion wheel 12 is more labor-saving when rotating.

[0035] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0036] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connecting" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited, the above terms in the present application can be understood according to the specific meaning of the above terms by the person skilled in the art according to the specific circumstances.

[0037] Although the embodiments of the present application have been shown and described, it is to be understood that for the person skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A retractable gate valve, comprising a housing (1), characterized in that: A lower valve body (4) is mounted on the inner wall of the housing (1), and an outer sleeve (3) is movably connected to the outer wall of the lower valve body (4). An adjustment device (2) is provided on the inner wall of the housing (1), and the adjustment device (2) comprises: Two threaded rods (21) are provided, both of which are rotatably connected to the inner wall of the housing (1) via bearings; Two side plates (22) are provided, each of which is threadedly connected to the outer wall of the two threaded rods (21) and is fixedly connected to the outer wall of the outer sleeve (3); Two bevel gear sets (23) are provided and are respectively mounted on the outer walls of the two threaded rods (21); Two rotating rods (24) are provided, which are respectively mounted on the outer walls of the two bevel gear sets (23) and are both rotatably connected to the inner wall of the housing (1) through bearings; A transmission mechanism (25) is mounted on the top of the two rotating rods (24); A hand wheel (26) is mounted on the top of the transmission mechanism (25); The hand wheel (26) drives the two bevel gear sets (23) at the bottom of the two rotating rods (24) to rotate through the transmission mechanism (25), and the two bevel gear sets (23) drive the outer sleeves (3) on the inner sides of the two side plates (22) to move through the two threaded rods (21).

2. A retractable gate valve according to claim 1, characterized in that: Two gate plates (5) are pressed against the inner wall of the lower valve body (4), and a connecting block (6) is rotated on the back of the two gate plates (5) via a pin shaft. Two limiting rods (7) are installed on the outer wall of the connecting block (6).

3. The retractable gate valve according to claim 2, characterized in that: The top of the lower valve body (4) is mounted with an upper valve body (8) via a fixed screw, the top of the connecting block (6) is mounted with a valve stem (10), the outer wall of the valve stem (10) is movably connected to the inner wall of the upper valve body (8), and the top of the valve stem (10) is mounted with a screw rod (11).

4. The retractable gate valve according to claim 3, characterized in that: The inner wall of the upper valve body (8) is rotatably connected to a twist wheel (12) via a bearing, and the inner wall of the twist wheel (12) is threadedly connected to the outer wall of the screw rod (11).

5. The retractable gate valve according to claim 4, characterized in that: A labor-saving device (9) is provided on the top of the twist wheel (12), and the labor-saving device (9) comprises: An arc plate (91) is mounted on the outer wall of the twist wheel (12); A straight plate (92) is mounted on the outer wall of the arc plate (91); A bolt (93) threadedly connected to the inner wall of the straight plate (92); A round rod (94) is rotatably connected to the inner wall of the arc plate (91) via a pin and is engaged with one end of the bolt (93); The bolt (93) is twisted so that it is no longer engaged with the inner wall of the round rod (94), and the round rod (94) is rotated 180 degrees, thereby increasing the torque of the twist wheel (12).

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