Valve limiting structure

Abstract

The utility model relates to the technical field of valves, in particular to a valve limiting structure. According to the technical scheme, the valve limiting structure comprises a valve body, a protection assembly, connecting assemblies, a sealing assembly, a flow dredging assembly, a filtering assembly, a buffering assembly, a mounting table, a supporting bracket, a manual rotating rod, a limiting ring, a valve clack, an elastic spring and a baffle, the protection assembly is arranged on the outer side of the valve body, and the connecting assemblies are arranged at the two ends of the valve body; a sealing assembly is arranged in the valve body. Compared with a traditional valve limiting structure which generally controls the opening and closing degree through an electric actuator, and in practical application, due to the influence of operation force, actuator precision or external factors, the valve possibly exceeds the preset opening and closing position, the valve limiting structure can continuously keep pre-tightening force on the valve clack by setting tension, and the valve clack is prevented from being damaged. The stability of the valve clack is effectively enhanced, the valve can be effectively prevented from exceeding a preset opening and closing position, and the valve clack is prevented from deviating.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a valve limiting structure. BACKGROUND

[0002] The valve limiting structure is accurate control to the movement stroke of the valve through physical contact or non-contact mode, so as to prevent the valve from exceeding the stroke range, thereby protecting the safe operation of the valve and its related equipment.

[0003] The existing valve limiting structure generally controls the opening and closing degree through the electric actuator, but in actual application, due to the influence of operation strength, actuator precision or external factors, the valve may exceed the preset opening and closing position, resulting in problems such as poor sealing, fluid leakage or valve component damage.

[0004] In view of the problems that the existing valve limiting structure may exceed the preset opening and closing position due to the influence of operation strength, actuator precision or external factors, resulting in problems such as poor sealing, fluid leakage or valve component damage, the valve limiting structure can continuously maintain the pre-tightening force of the valve disc by setting the tension, effectively enhancing the stability of the valve disc, and can effectively prevent the valve from exceeding the preset opening and closing position and prevent the valve disc from deviating. SUMMARY

[0005] In order to overcome the problems that the existing valve limiting structure generally controls the opening and closing degree through the electric actuator, but in actual application, due to the influence of operation strength, actuator precision or external factors, the valve may exceed the preset opening and closing position, resulting in problems such as poor sealing, fluid leakage or valve component damage.

[0006] The technical scheme of the utility model is as follows: a valve limiting structure, comprising a valve body, a protection assembly, a connecting assembly, a sealing assembly, a flow-diffusing assembly, a filtering assembly, a buffer assembly, a mounting table, a supporting bracket, a manual rotating rod, a limiting ring, a valve disc, an elastic spring and a baffle, the outer side of the valve body is provided with the protection assembly, both ends of the valve body are provided with the connecting assembly, the inside of the valve body is provided with the sealing assembly, the inner side of the valve body is provided with the flow-diffusing assembly, the inside of the valve body is provided with the filtering assembly, the bottom of the valve body is provided with the buffer assembly, the top end of the valve body is provided with the mounting table, the surface of the mounting table is provided with the supporting bracket, the inside of the supporting bracket is provided with the manual rotating rod, the bottom end of the manual rotating rod is located in the inside of the mounting table, the bottom end of the manual rotating rod is provided with the valve disc, the surface of the supporting bracket is provided with the limiting ring, the limiting ring is located on the outer side of the manual rotating rod, and the top surface of the valve disc is provided with the elastic spring. The top surface of the elastic spring is provided with the baffle, and the baffle is located in the inside of the mounting table.

[0007] Preferably, the valve body is protected by the protection assembly, the valve body is connected with other pipelines by the connecting assembly, the connection between the valve body and the inside is sealed by the sealing assembly, the water flow is facilitated to flow faster inside the valve body by the flow-diffusing assembly, the filter assembly prevents the accumulation of foreign matter in the valve body from causing blockage, the valve disc is buffered by the buffer assembly, the support bracket is installed by the installation table, the manual rotating rod is supported by the support bracket, the manual rotating rod is limited by the limiting ring, the water flow inside the valve body is blocked by the valve disc, the valve disc is provided with appropriate pre-tightening force by the elastic spring, the valve disc is tightly attached to the inside of the valve body, the stability and reliability of the valve disc are enhanced, the elastic spring is blocked by the baffle, and the elastic spring is stabilized.

[0008] Preferably, the protection assembly comprises a heat preservation layer and a protective layer, and the outside of the valve body is provided with the heat preservation layer, and the outside of the heat preservation layer is sleeved with the protective layer.

[0009] Preferably, the connecting assembly comprises a connecting flange and a first sealing ring, and the two ends of the valve body are provided with the connecting flange, and one side of the connecting flange is provided with the first sealing ring.

[0010] Preferably, the sealing assembly comprises an installation slot and a second sealing ring, and the inside of the connecting flange is provided with the installation slot, and the inside of the installation slot is provided with the second sealing ring.

[0011] Preferably, the flow-diffusing assembly comprises a flow-diffusing channel and a water inlet, the inside of the valve body is provided with the flow-diffusing channel, the flow-diffusing channel is provided with a plurality of groups, the inside of the valve body is provided with the water inlet, and the edge of the water inlet is designed to be smooth.

[0012] Preferably, the filter assembly comprises a fixed slot and a sieve plate, and the inside of the valve body is provided with the fixed slot, and the inside of the fixed slot is provided with the sieve plate.

[0013] Preferably, the buffer assembly comprises an installation cavity and a buffer pad, and the bottom surface of the inside of the valve body is provided with the installation cavity, and the bottom surface of the installation cavity is provided with the buffer pad.

[0014] The utility model discloses the beneficial effects of:

[0015] The support bracket is installed by the installation table, the manual rotating rod is supported by the support bracket, the manual rotating rod is limited by the limiting ring, the water flow inside the valve body is blocked by the valve disc, the valve disc is provided with appropriate pre-tightening force by the elastic spring, the valve disc is tightly attached to the inside of the valve body, the stability and reliability of the valve disc are enhanced, the elastic spring is blocked by the baffle, and the elastic spring is stabilized, so that the valve door can be effectively prevented from exceeding the preset opening and closing position, and the valve disc is prevented from deviating. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1Shown is a first three-dimensional structural schematic diagram of a valve limiting structure of the present utility model;

[0017] Figure 2 Shown is a second three-dimensional structural schematic diagram of a valve limiting structure of the present utility model;

[0018] Figure 3 Shown is a schematic diagram of the first internal three-dimensional structure of a valve limiting structure of the present utility model;

[0019] Figure 4 Shown is a schematic diagram of the second internal three-dimensional structure of a valve limiting structure of the present utility model;

[0020] Explanation of the accompanying drawings: 1. Valve body; 201. Insulation layer; 202. Protective layer; 301. Connecting flange; 302. First sealing ring; 401. Mounting groove; 402. Second sealing ring; 501. Drainage channel; 502. Water outlet; 601. Fixing groove; 602. Sieve plate; 701. Mounting cavity; 702. Buffer pad; 801. Mounting platform; 802. Support bracket; 803. Manual rotating rod; 804. Limiting ring; 805. Valve disc; 806. Elastic spring; 807. Baffle. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4 The utility model provides an embodiment: a valve limiting structure, including a valve body 1, a protection component, a connecting component, a sealing component, a drainage component, a filtering component, a buffer component, a mounting platform 801, a supporting bracket 802, a manual rotating rod 803, a limiting ring 804, a valve disc 805, an elastic spring 806 and a baffle 807, a protection component is provided on the outside of the valve body 1, a connecting component is provided at both ends of the valve body 1, a sealing component is provided inside the valve body 1, a drainage component is provided on the inside of the valve body 1, and a The filter assembly includes a buffer assembly at the bottom of the valve body 1 and a mounting platform 801 at the top. A support bracket 802 is provided on the surface of the mounting platform 801. A manual rotating rod 803 is provided inside the support bracket 802. The bottom end of the manual rotating rod 803 is located inside the mounting platform 801. A valve disc 805 is provided at the bottom end of the manual rotating rod 803. A limit ring 804 is provided on the surface of the support bracket 802. The limit ring 804 is located outside the manual rotating rod 803. An elastic spring 806 is provided on the top surface of the valve disc 805. A baffle 807 is provided on the top surface of the elastic spring 806, and the baffle 807 is located inside the mounting platform 801.

[0023] See also Figures 1-4In the embodiment, the protection assembly includes the heat preservation layer 201 and the protective layer 202, the outer side of the valve body 1 is provided with the heat preservation layer 201, the outer side of the heat preservation layer 201 is sleeved with the protective layer 202, in use, the outer side of the valve body 1 is protected by the heat preservation layer 201 to prevent abnormal temperature from deforming the valve body 1, and the outer side of the valve body 1 is protected by the protective layer 202 to prevent damage to the valve body 1.

[0024] Preferably, the connection assembly includes the connection flange 301 and the first sealing ring 302, both ends of the valve body 1 are provided with the connection flange 301, one side of the connection flange 301 is provided with the first sealing ring 302, in use, the valve body 1 is connected with the remaining pipeline through the connection flange 301, and the connection between the connection flange 301 and the remaining pipeline is sealed through the first sealing ring 302.

[0025] Preferably, the sealing assembly includes the mounting groove 401 and the second sealing ring 402, the inner side of the connection flange 301 is provided with the mounting groove 401, the inside of the mounting groove 401 is provided with the second sealing ring 402, in use, the second sealing ring 402 is mounted through the mounting groove 401, and the connection between the connection flange 301 and the valve body 1 is sealed through the second sealing ring 402.

[0026] Preferably, the flow-diffusing assembly includes the flow-diffusing channel 501 and the water passage 502, the inner side of the valve body 1 is provided with the flow-diffusing channel 501, a plurality of groups of the flow-diffusing channel 501 are provided, the inside of the valve body 1 is provided with the water passage 502, and the edge of the water passage 502 is designed to be smooth, in use, the flow of water in the valve body 1 is accelerated through the flow-diffusing channel 501, and the water flow in the valve body 1 is facilitated to pass through through the water passage 502.

[0027] Preferably, the filtering assembly includes the fixing groove 601 and the sieve plate 602, the inside of the valve body 1 is provided with the fixing groove 601, the inside of the fixing groove 601 is provided with the sieve plate 602, in use, the sieve plate 602 is installed through the fixing groove 601, and impurities in the water flow are filtered through the sieve plate 602.

[0028] Preferably, the buffer assembly includes the mounting cavity 701 and the buffer pad 702, the inside bottom surface of the valve body 1 is provided with the mounting cavity 701, the bottom surface of the mounting cavity 701 is provided with the buffer pad 702, in use, the buffer pad 702 is installed through the mounting cavity 701, and the impact force when the valve disc 805 is closed is absorbed through the buffer pad 702.

[0029] When working, the valve body 1 is connected with the rest of the pipeline through the connecting flange 301, the connecting flange 301 and the rest of the pipeline are sealed through the first sealing ring 302, the second sealing ring 402 is installed through the installation groove 401, the connecting flange 301 and the valve body 1 are sealed through the second sealing ring 402, the water flow in the valve body 1 is accelerated through the flow channel 501, and the water flow in the valve body 1 is facilitated to pass through the water inlet 502.

[0030] When the valve body 1 is operated, the supporting bracket 802 is installed through the installation table 801, the manual rotating rod 803 is supported through the supporting bracket 802, the manual rotating rod 803 is limited through the limiting ring 804, the water flow in the valve body 1 is blocked through the valve disc 805, the valve disc 805 is provided with appropriate pre-tightening force through the elastic spring 806, the valve disc 805 is tightly attached to the inside of the valve body 1, the stability and reliability of the valve disc 805 are enhanced, and the elastic spring 806 is blocked through the baffle 807, and the elastic spring 806 is stabilized.

[0031] Through the above steps, the valve body 1 is protected through the protection assembly, the valve body 1 is connected with other pipelines through the connecting assembly, the inside of the valve body 1 is secondarily sealed through the sealing assembly, the water flow in the valve body 1 is facilitated to flow faster through the flow channel assembly, foreign matters are prevented from being accumulated in the valve body 1 through the filtering assembly, and the valve disc 805 is buffered through the buffering assembly.

[0032] The embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the utility model.

Claims

1. A valve stop structure comprising a valve body (1), characterized in that: The utility model also includes a protection assembly, a connecting assembly, a sealing assembly, a flow-diffusing assembly, a filtering assembly, a buffering assembly, a mounting platform (801), a supporting bracket (802), a manual rotating rod (803), a limiting ring (804), a valve flap (805), an elastic spring (806) and a baffle (807), the outer side of the valve body (1) is provided with the protection assembly, both ends of the valve body (1) are provided with the connecting assembly, the inside of the valve body (1) is provided with the sealing assembly, the inner side of the valve body (1) is provided with the flow-diffusing assembly, the inside of the valve body (1) is provided with the filtering assembly, the bottom of the valve body (1) is provided with the buffering assembly, the top end of the valve body (1) is provided with the mounting platform (801), the surface of the mounting platform (801) is provided with the supporting bracket (802), the inside of the supporting bracket (802) is provided with the manual rotating rod (803), the bottom end of the manual rotating rod (803) is located in the inside of the mounting platform (801), the bottom end of the manual rotating rod (803) is provided with the valve flap (805), the surface of the supporting bracket (802) is provided with the limiting ring (804), the limiting ring (804) is located on the outer side of the manual rotating rod (803), the top surface of the valve flap (805) is provided with the elastic spring (806), the top surface of the elastic spring (806) is provided with the baffle (807), and the baffle (807) is located in the inside of the mounting platform (801).

2. The valve stop structure of claim 1, wherein: The protection assembly includes a heat preservation layer (201) and a protective layer (202), and the outer side of the valve body (1) is provided with the heat preservation layer (201), and the outer side of the heat preservation layer (201) is sleeved with the protective layer (202).

3. The valve stop structure of claim 1, wherein: The connecting assembly includes a connecting flange (301) and a first sealing ring (302), and both ends of the valve body (1) are provided with the connecting flange (301), and one side of the connecting flange (301) is provided with the first sealing ring (302).

4. The valve stop structure of claim 3, wherein: The sealing assembly includes a mounting groove (401) and a second sealing ring (402), and the inner side of the connecting flange (301) is provided with the mounting groove (401), and the inside of the mounting groove (401) is provided with the second sealing ring (402).

5. The valve stop structure of claim 1, wherein: The flow-diffusing assembly includes a flow-diffusing channel (501) and a water passage (502), the inner side of the valve body (1) is provided with the flow-diffusing channel (501), a plurality of groups of the flow-diffusing channel (501) are provided, the inside of the valve body (1) is provided with the water passage (502), and the edge of the water passage (502) is designed in a smooth manner.

6. The valve stop structure of claim 1, wherein: The filtering assembly includes a fixing groove (601) and a sieve plate (602), and the inside of the valve body (1) is provided with the fixing groove (601), and the inside of the fixing groove (601) is provided with the sieve plate (602).

7. The valve stop structure of claim 1, wherein: The buffering assembly includes a mounting cavity (701) and a buffer pad (702), and the inside bottom surface of the valve body (1) is provided with the mounting cavity (701), and the bottom surface of the mounting cavity (701) is provided with the buffer pad (702).

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