Low-pressure starting valve with protection structure

Abstract

The utility model relates to the technical field of gate valves, and discloses a low-pressure starting valve with a protection structure, which comprises a control console, a valve handle is rotatably mounted outside the control console in a penetrating manner, a transmission pipe is fixedly mounted at the bottom of the control console, and protection mechanisms are arranged at two ends of the transmission pipe. By arranging the connecting pipe, the transmission pipe is indirectly connected with the external pipe under the action of the bulb pipes at the two ends of the connecting pipe, and the transmission pipe and the connecting pipe can deviate under the action of the bulb pipes, so that damage to the device and the external pipe caused by torsion force is avoided, meanwhile, leakproofness can be provided for the device, and the torsion angle of the device is limited by the limiting rod; according to the device, parts in the device are prevented from being damaged, the device is easy to assemble, buffering force, leakproofness and anti-torsion effects can be provided, and it is guaranteed that the device and an external connecting pipe are not damaged in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a low-pressure starting valve with a protection structure. Background Technique

[0002] A low-pressure starting valve refers to a valve used to control the flow of low-pressure fluids under certain temperature and pressure conditions. It can control the flow rate and pressure of the fluid by opening and closing, and is applied to the start and stop of an electric motor, thereby protecting the electric motor and related equipment, extending the service life, and reducing the maintenance cost.

[0003] The Chinese patent provides a low-pressure starting valve applicable to a protection structure, with the publication number CN216279644U, which includes a valve body. A valve plate is slidably arranged inside the valve body. A connecting seat is fixedly arranged at the top of the valve plate. A valve rod is arranged at the top of the connecting seat. A thrust bearing is arranged at the top end inside the valve body. The valve rod passes through the thrust bearing. One end of the valve rod passes through the valve body and extends out of the top of the valve body. A handle is fixedly connected to the top end of the valve rod. A protective cover is arranged at the outer end of the top of the valve body. In the utility model, the protective cover is installed on the top of the fixing plate. The two ends of the fixing plate are fixedly installed with first connecting seats. And a first bolt is hinged and connected inside the first connecting seat, so that the first bolt is buckled inside the second connecting seat at the outer end of the protective cover. Then, the extrusion block is screwed to make the extrusion block slide downward, thereby fixing the protective cover. The protective cover will protect the handle to avoid the handle being collided during use or transportation.

[0004] The above device has the effect of being able to protect the handle. However, in actual application, the device is directly connected to the external pipeline, which is easy to generate torsion force, causing damage to the device or the external connecting pipe, resulting in weakened airtightness, being not conducive to the service life of the device, and increasing the maintenance cost. Therefore, it is necessary to provide a low-pressure starting valve with a protection structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide a low-pressure starting valve with a protection structure to solve the problems that the existing device is directly connected to the external connecting pipe during use, the interface cracks when subjected to torsion force, the airtightness of the device is weakened, and the device and the external connecting pipe are damaged.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A low-voltage start valve with a protection structure, including a control console, a valve handle is rotatably installed through the outside of the control console, and a transmission pipe is fixedly installed at the bottom of the control console, and protection mechanisms are arranged at both ends of the transmission pipe. The protection mechanism includes two outer flange rings and two inner flange rings, a number of support columns are fixedly installed between the outer flange ring and the inner flange ring, and a spherical pipe is rotatably installed inside the outer flange ring and the inner flange ring. A connecting pipe is fixedly installed between the spherical pipes on both sides, an outer buffer pad is fixedly installed between the spherical pipe and the outer flange ring, and an inner buffer pad is fixedly installed between the spherical pipe and the inner flange ring. A hose is fixedly installed through the spherical pipe and between the outer buffer pads on both sides.

[0007] Preferably, annular grooves are provided on one side of both the outer flange ring and the inner flange ring, annular pads are sleeved outside both the outer buffer pad and the inner buffer pad, and the annular grooves and the annular pads are adaptively matched.

[0008] Preferably, the shapes of both the outer buffer pad and the inner buffer pad are hemispherical, and hydrophobic holes are provided inside both the outer buffer pad and the inner buffer pad, and the hose and the hydrophobic holes are adaptively matched.

[0009] Preferably, a buffer mechanism is provided between the inner flange rings. The buffer mechanism includes six limiting grooves, the six limiting grooves are arranged in an array on both sides of the inner flange rings, and a spring is fixedly installed between the two flange rings on both sides. Three limiting rods are slidably installed through the limiting grooves on both sides. External threads are fixedly installed at both ends of the three limiting rods, and a retaining seat is threadedly installed on the outside of the external threads.

[0010] Preferably, the outer shape of the limiting groove is arc-shaped, and the limiting grooves on both sides are oppositely arranged on the inner flange rings. The lengths of the three limiting rods are the same as the distance between the misaligned ends of the limiting grooves on both sides, and internal threads are provided inside the retaining seat.

[0011] Preferably, a convex strip is fixedly installed on the outside of the control console and above the valve handle. The support columns are arranged in an array, and the limiting grooves are arranged between the support columns.

[0012] Preferably, the inner diameter of the hose is the same as the inner diameter of the transmission pipe, and gaps are left between the spring and both the connecting pipe and the limiting rod.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1) The low-pressure start valve with a protection structure can have the ball tube offset under the action of the outer flange ring and the inner flange ring, so that both sides are offset, thereby transferring the torsion between the transfer pipe and the external connection pipe. And under the action of the outer buffer pad and the inner buffer pad, the impact force when the ball tube is offset is reduced, thereby increasing the airtightness and buffering force of the device. When in use, the torsion between the device and the external connection pipe is transferred through the connecting pipe between the two ball tubes, avoiding damage to the device or the external connection pipe caused by direct contact.

[0015] 2) The low-pressure start valve with a protection structure is provided with a spring and a limiting rod. When the transfer pipes and the external connection pipes on both sides are twisted, the spring can provide buffering force for the device, and the twisting distance is reduced under the action of the limiting rod to ensure that the internal parts of the device are not damaged. At the same time, with the arc-shaped limiting groove, the feasibility of the device's anti-torsion can be realized, and the device can be disassembled or assembled flexibly. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a low-pressure start valve with a protection structure in an embodiment of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the positioning mechanism in an embodiment of the present invention;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the dust removal mechanism in an embodiment of the present invention;

[0019] Figure 4 It is a sectional structural schematic diagram of the glue water tank in an embodiment of the present invention;

[0020] Figure 5 It is a sectional structural schematic diagram of the fixing frame in an embodiment of the present invention.

[0021] In the figure: 1, control console; 2, valve handle; 3, transfer pipe; 4, protection mechanism; 401, outer flange ring; 402, inner flange ring; 403, support column; 404, ball tube; 405, connecting pipe; 406, outer buffer pad; 407, inner buffer pad; 408, hose; 5, buffer mechanism; 501, limiting groove; 502, spring; 503, limiting rod; 504, external thread; 505, retaining seat. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Example 1

[0024] Combined with Figures 1-3 , it includes a control console 1. A valve handle 2 is rotatably installed through the outside of the control console 1, and a transmission pipe 3 is fixedly installed at the bottom of the control console 1. Protection mechanisms 4 are arranged at both ends of the transmission pipe 3. The protection mechanism 4 includes two outer flange rings 401 and two inner flange rings 402. A number of support columns 403 are fixedly installed between the outer flange ring 401 and the inner flange ring 402. A spherical pipe 404 is rotatably installed inside the outer flange ring 401 and the inner flange ring 402. A connecting pipe 405 is fixedly installed between the two spherical pipes 404 on both sides. An outer buffer pad 406 is fixedly installed between the spherical pipe 404 and the outer flange ring 401, and an inner buffer pad 407 is fixedly installed between the spherical pipe 404 and the inner flange ring 402. A hose 408 is fixedly installed through the spherical pipe 404 and between the two outer buffer pads 406.

[0025] Refer to Figure 2 and Figure 3 , and it is further obtained that annular grooves are provided on one side of both the outer flange ring 401 and the inner flange ring 402. Annular pads are sleeved outside both the outer buffer pad 406 and the inner buffer pad 407. The annular grooves and the annular pads are adaptively matched. The shapes of both the outer buffer pad 406 and the inner buffer pad 407 are hemispherical, and hydrophobic holes are provided inside both the outer buffer pad 406 and the inner buffer pad 407. The hose 408 is adaptively matched with the hydrophobic holes.

[0026] Specifically, in order to transfer the torque at the connection of the device, by using the outer flange ring 401 and the inner flange ring 402 and connecting them with the support columns 403, the spherical pipe 404 is restricted in the middle. The two spherical pipes 404 on both sides are connected through the connecting pipe 405, so that the transmission pipe 3 is indirectly connected to the external connecting pipe, to transfer the torque between the transmission pipe 3 and the external connecting pipe, and avoid the connection cracking due to torque and the device losing airtightness. And under the action of the outer buffer pad 406 and the inner buffer pad 407, the impact force between the spherical pipe 404 and the outer flange ring (401) and the inner flange ring (402) is small, and airtightness can be provided for the device.

[0027] Example 2

[0028] Refer to Figure 4 and Figure 5, and on the basis of Embodiment 1, it is further obtained that a buffer mechanism 5 is arranged between the inner flange rings 402. The buffer mechanism 5 includes six limiting grooves 501, and the six limiting grooves 501 are arranged in an array on the two inner flange rings 402. A spring 502 is fixedly installed between the two flange rings 402. Three limiting rods 503 are slidably installed through the two limiting grooves 501. External threads 504 are fixedly installed at both ends of the three limiting rods 503, and a retaining seat 505 is threadedly installed on the outside of the external threads 504. The shape of the limiting groove 501 is arc-shaped, and the two limiting grooves 501 are oppositely arranged on the inner flange ring 402. The lengths of the three limiting rods 503 are the same as the distance between the offset ends of the two limiting grooves 501. Internal threads are provided inside the retaining seat 505.

[0029] Specifically, the limiting groove 501 is designed in an arc shape so that the limiting rod 503 can shift inside the two limiting grooves 501. When the limiting rod 503 contacts the offset ends of the two limiting grooves 501 due to torsion, limited by the length of the limiting rod 503, the retaining seat 501 blocks the inner flange ring 402 to prevent the device from being damaged due to continuous torsion of the pipeline. By installing the spring 502, a buffer force can be provided for the device when the transmission pipe 3 and the external connection pipe are twisted.

[0030] Embodiment 3

[0031] Refer to Figures 1-5 , and on the basis of Embodiment 1 and Embodiment 2, it is further obtained that a convex strip is fixedly installed on the outside of the control console 1 above the valve handle 2. The support columns 403 are arranged in an array, and the limiting grooves 501 are opened between the support columns 403. The inner diameter of the hose 408 is the same as the inner diameter of the transmission pipe 3. A gap remains between the spring 502 and the connecting pipe 405 and the limiting rod 503.

[0032] Specifically, by installing the convex strip, the convex strip plays a blocking role to prevent the valve handle 2 from being damaged by impact or changing the transmission state. At the same time, the support columns 403 and the limiting grooves 501 are arranged in an array, and the spring 502 is installed between the inner flange rings 402, and a gap is left between the spring 502 and the connecting pipe 405 and the limiting rod 503 to achieve the rotatability of the device and then transfer the torsion.

[0033] During the actual operation process, in order to transfer the torsion at the connection of the device, the outer flange ring 401 and the inner flange ring 402 are used, and the spherical tube 404 is restricted in the middle under the connection of the support columns 403. The two spherical tubes 404 are connected through the connecting pipe 405, so that the transmission pipe 3 is indirectly connected to the external connection pipe to transfer the torsion between the transmission pipe 3 and the external connection pipe, and prevent the connection from cracking due to torsion, resulting in the loss of airtightness of the device. And under the action of the outer buffer pad 406 and the inner buffer pad 407, the impact force between the spherical tube 404 and the outer flange ring (401) and the inner flange ring (402) is small, and airtightness can be provided for the device;

[0034] The limiting groove 501 is arc-shaped, enabling the limiting rod 503 to shift inside the two-sided limiting grooves 501. When the limiting rod 503 contacts the misaligned ends of the two-sided limiting grooves 501 due to torsion, limited by the length of the limiting rod 503, the retaining seat 501 blocks the inner flange ring 402 to prevent the device from being damaged due to continuous twisting of the pipeline. By installing the spring 502, when the transmission pipe 3 and the external connecting pipe are twisted, a buffering force can be provided for the device;

[0035] By installing the convex strips, the convex strips play a role in blocking, preventing the valve handle 2 from being damaged by impact or changing the transmission state. At the same time, the support columns 403 and the limiting grooves 501 are arranged in an array, and the spring 502 is installed between the inner flange rings 402, and a gap is left between the spring 502 and the connecting pipe 405 and the limiting rod 503 to achieve the rotatability of the device and thus transfer the torsion force.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-pressure starting valve with a protective structure, comprising a control console (1), a valve handle (2) being rotatably mounted through the outside of the control console (1), and a transmission pipe (3) being fixedly mounted at the bottom of the control console (1), characterized in that: Both ends of the transmission pipe (3) are provided with protection mechanisms (4). The protection mechanism (4) comprises two outer flange rings (401) and two inner flange rings (402), a plurality of support columns (403) are fixedly installed between the outer flange rings (401) and the inner flange rings (402), and a ball tube (404) is rotatably installed inside the outer flange rings (401) and the inner flange rings (402), a connecting pipe (405) is fixedly installed between the ball tubes (404) on both sides, an outer buffer pad (406) is fixedly installed between the ball tubes (404) and the outer flange rings (401), and an inner buffer pad (407) is fixedly installed between the ball tubes (404) and the inner flange rings (402), and a hose (408) is fixedly installed passing through the ball tubes (404) and between the outer buffer pads (406) on both sides.

2. A low-pressure starting valve with a protective structure according to claim 1, characterized in that: An annular groove is provided on one side of the outer flange ring (401) and the inner flange ring (402), and an annular gasket is sleeved on the outside of the outer buffer gasket (406) and the inner buffer gasket (407), and the annular groove is adaptively matched with the annular gasket.

3. A low-pressure starting valve with a protective structure according to claim 2, characterized in that: The outer buffer pad (406) and the inner buffer pad (407) are both hemispherical in shape, and a hydrophobic hole is provided inside the outer buffer pad (406) and the inner buffer pad (407), and the hose (408) is adaptively matched with the hydrophobic hole.

4. The low-pressure starting valve with a protective structure according to claim 2, characterized in that: A buffer mechanism (5) is arranged between the inner flange rings (402), and the buffer mechanism (5) comprises six limiting grooves (501). The six limiting grooves (501) are arranged in an array on the inner flange rings (402) on both sides, and a spring (502) is fixedly installed between the flange rings (402) on both sides, and three limiting rods (503) are slidably installed through the limiting grooves (501) on both sides, and both ends of the three limiting rods (503) are fixedly installed with external threads (504), and the external threads of the external threads (504) are installed with a stopper (505).

5. A low-pressure starting valve with a protective structure according to claim 4, characterized in that: The limiting groove (501) has an arc shape, and the limiting grooves (501) on both sides are relatively opened on the inner flange ring (402), the length of the three limiting rods (503) is the same as the distance between the offset ends of the limiting grooves (501) on both sides, and the interior of the blocking seat (505) is provided with an internal thread.

6. A low-pressure starting valve with a protective structure according to claim 5, characterized in that: The exterior of the console (1) is fixedly provided with a convex strip located on the upper side of the valve handle (2), the support columns (403) are arranged in an array, and the limiting grooves (501) are provided between the support columns (403).

7. A low-pressure starting valve with a protective structure according to claim 6, characterized in that: The inner diameter of the hose (408) is the same as the inner diameter of the transmission pipe (3), and there is a gap between the spring (502) and the connecting pipe (405) and the limiting rod (503).

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