Hollow valve plate of center line pin-free double-shaft butterfly valve

Abstract

The utility model relates to the technical field of double-shaft butterfly valves, in particular to a hollow valve plate of a center-line pin-free double-shaft butterfly valve, which comprises a valve seat, two groups of valve plate bodies are rotatably mounted in the valve seat, a cavity is arranged in each valve plate body, and a heat insulation cotton layer and a support layer are filled in each cavity. A groove is formed in the surface of the outer wall of the valve plate body, an arc-shaped ring is installed in the groove in a sliding mode, and multiple sets of cushion plates are assembled on the faces, opposite to the groove, of the arc-shaped ring; when the double-shaft butterfly valve is used, the cavity in the valve plate body in the valve seat is designed in a vacuum mode and is matched with the heat insulation cotton layer filled in the valve seat, the heat insulation cotton layer is conveniently supported and protected through the supporting layer, the heat insulation cotton layer can operate more stably, meanwhile, the heat insulation cotton layer is matched with the vacuum cavity, the sealing performance of the butterfly valve is conveniently improved, and the service life of the butterfly valve is prolonged. And the efficiency of conducting heat in the flue gas to the other side through the valve plate body is reduced, so that the condition of heat loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of double-axis butterfly valves, in particular to a hollow valve plate of a centerline pinless double-axis butterfly valve. Background Art

[0002] Butterfly valves can be divided into single-leaf valves and multi-leaf valves according to the number of valve plates. The center axis of the valve stem of existing butterfly valves generally coincides with the center axis of the valve plate. When the valve is opened and closed, the valve stem drives the valve plate to rotate, and the two ends of the valve plate move in opposite directions. In the flue gas circulation system of the sintering machine, the butterfly valve is generally set in the vertical pipe for the control of the bypass pipe; Patent No. CN202120437394.2 discloses a double-axis downward-flip butterfly valve. By adopting a double-axis, eccentric design, it solves the problem that the existing butterfly valve cannot open normally due to excessive dust accumulation in the flue gas circulation system of the sintering machine; However, when the double-axis butterfly valve is used, the heat carried in the flue gas is easily transferred to the valve plate in the butterfly valve, and easily passes through the valve plate, affecting the subsequent structure, and also causing the heat in the flue gas to be lost. To this end, we propose a hollow valve plate of a centerline pinless double-axis butterfly valve. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides a hollow valve plate of a centerline pinless double-axis butterfly valve.

[0004] The technical solution adopted by the utility model to solve the technical problem is a hollow valve plate of a centerline pinless biaxial butterfly valve, comprising a valve seat, a valve plate body rotatably mounted in the valve seat, and two sets of valve plate bodies, a cavity is provided in the valve plate body, and the cavity is filled with a heat insulating cotton layer and a support layer;

[0005] A groove is provided on the outer wall surface of the valve plate body, and an arc ring is slidably installed in the groove. The arc ring is equipped with a pad on the side opposite to the groove, and there are multiple groups of pads. A spring for buffering is installed between two groups of pads, and a shock absorber is installed on the inner periphery of the spring and located between the two groups of pads.

[0006] By adopting the above technical solution, when the double-axis butterfly valve is used, the cavity in the valve plate body inside the valve seat is designed to be vacuum-type, and at the same time, the heat-insulating cotton layer filled inside is matched, and the support layer facilitates supporting and protecting the heat-insulating cotton layer, so that it can operate more stably. At the same time, the heat-insulating cotton layer and the vacuum-type cavity cooperate with each other to improve the sealing performance of the butterfly valve and reduce the efficiency of heat in the flue gas being transferred to the other side through the valve plate body, thereby reducing heat loss.

[0007] When the double-axis butterfly valve is in use, and when the two sets of valve plate bodies inside the valve seat are in a closed state, the smoke will impact the hollow valve plate body, and the arc ring on the outer periphery of the valve plate body is convenient for buffering the smoke, and combined with the springs and shock absorbers between the multiple sets of pads between the groove on the outer periphery of the valve plate body and the arc ring, it is convenient to assist in buffering the arc ring and reduce the impact of the smoke impacting the valve plate body, so that the valve plate body can operate more stably and the double-axis butterfly valve can more stably block the smoke channel.

[0008] Specifically, arc-shaped grooves that fit together are formed on the surfaces of the two groups of valve plates that are in contact with each other.

[0009] By adopting the above technical solution, the arcuate grooves between the two sets of valve plate bodies fit together, which facilitates improving the tightness of the two sets of valve plate bodies inside the valve seat when they are combined.

[0010] Specifically, the inner wall surface of the valve seat is integrally constructed with trapezoidal baffles that abut against the valve plate body, and there are two groups of trapezoidal baffles.

[0011] By adopting the above technical solution, the trapezoidal baffle can be easily abutted against the valve plate body, thereby cooperating with the valve plate body to close the channel inside the valve seat. At the same time, the trapezoidal baffle in the form of an isosceles ladder is inclined on both sides to reduce the circumferential flow of the flue gas, so that the flue gas can flow more smoothly.

[0012] Specifically, one end of the arc-shaped ring close to the groove is equipped with a support rod plugged into and connected to the groove, and there are multiple groups of support rods.

[0013] By adopting the above technical solution, the support rod and the hole in the groove slide relative to each other, thereby improving the stability of the arc-shaped ring during buffering.

[0014] Specifically, the outer peripheral surface of the valve plate body is integrally constructed with an arc-shaped plate for auxiliary support, and there are multiple groups of arc-shaped plates, and support bars are installed between the multiple groups of arc-shaped plates.

[0015] By adopting the above technical solution, multiple groups of arc-shaped plates and support bars are used in conjunction with each other, which makes it easy to improve the strength of the hollow valve plate body and enable it to be used more stably.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The technical solution of this application adopts the design of the valve plate body, cavity, insulation cotton layer and support layer. When the double-axis butterfly valve is used, the cavity in the valve plate body inside the valve seat is designed to be vacuum-type, and is combined with the insulation cotton layer filled inside. The support layer is convenient for supporting and protecting the insulation cotton layer, so that it can operate more stably. At the same time, the insulation cotton layer and the vacuum cavity cooperate with each other to improve the sealing of the butterfly valve and reduce the efficiency of heat in the flue gas being transferred to the other side through the valve plate body, thereby reducing heat loss.

[0018] 2. The technical solution of the present application is designed with grooves, pads, springs, shock absorbers and arc rings. When the double-axis butterfly valve is used and the two sets of valve plate bodies inside the valve seat are in a closed state, the smoke will impact the hollow valve plate body, and the arc ring on the outer periphery of the valve plate body is convenient for buffering the smoke. In combination with the springs and shock absorbers between the grooves on the outer periphery of the valve plate body and the multiple sets of pads between the arc rings, it is convenient to assist in buffering the arc rings and reduce the impact of the smoke impacting the valve plate body, so that the valve plate body can operate more stably and the double-axis butterfly valve can more stably block the smoke channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an axonometric drawing of the present utility model;

[0021] Figure 2 It is a schematic plan view of the connection structure between the valve plate body and the valve seat of the utility model;

[0022] Figure 3 This is a schematic structural plan view of a portion A between the groove and the arc-shaped ring of the present invention;

[0023] In the figure: 1. valve seat; 2. valve plate body; 3. trapezoidal baffle; 4. cavity; 5. thermal insulation cotton layer; 6. support layer; 7. groove; 8. arc ring; 9. pad; 10. spring; 11. shock absorber; 12. support rod; 13. arc groove; 14. arc plate; 15. support bar. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] See also Figure 1-3The embodiment of the utility model provides a technical solution: a hollow valve plate of a centerline pinless biaxial butterfly valve, comprising a valve seat 1, a valve plate body 2 is rotatably mounted in the valve seat 1, and there are two groups of valve plate bodies 2, a cavity 4 is provided in the valve plate body 2, and the cavity 4 is filled with a heat insulating cotton layer 5 and a support layer 6; a groove 7 is provided on the outer wall surface of the valve plate body 2, and an arc ring 8 is slidably mounted in the groove 7, and a pad 9 is provided on the opposite side of the arc ring 8 to the groove 7, and there are multiple groups of pads 9, a spring 10 for buffering is provided between the two groups of pads 9, and a shock absorber 11 is provided on the inner periphery of the spring 10 and is located between the two groups of pads 9.

[0026] When the biaxial butterfly valve is in use, the cavity 4 in the valve plate body 2 inside the valve seat 1 is designed to be vacuum-type, and is matched with the internally filled heat-insulating cotton layer 5, and the supporting layer 6 facilitates the support and protection of the heat-insulating cotton layer 5, so that it can operate more stably. At the same time, the heat-insulating cotton layer 5 cooperates with the vacuum-type cavity 4 to improve the sealing performance of the butterfly valve and reduce the efficiency of heat in the flue gas being transferred to the other side through the valve plate body 2, thereby reducing heat loss.

[0027] When the double-axis butterfly valve is in use, and when the two groups of valve plate bodies 2 inside the valve seat 1 are in a closed state, the smoke will impact the hollow valve plate body 2, and the arc ring 8 on the outer periphery of the valve plate body 2 is convenient for buffering the smoke, and in conjunction with the springs 10 and shock absorbers 11 between the multiple groups of pads 9 between the groove 7 on the outer periphery of the valve plate body 2 and the arc ring 8, it is convenient to assist in buffering the arc ring 8 and reduce the impact of the smoke impacting the valve plate body 2, so that the valve plate body 2 can operate more stably, and the double-axis butterfly valve can more stably block the smoke channel.

[0028] like Figure 2 As shown, the surfaces of the two sets of valve plate bodies 2 that are in contact with each other are both provided with arc-shaped grooves 13 that fit together.

[0029] When in use, the arcuate grooves 13 between the two groups of valve plate bodies 2 fit together, so as to improve the tightness of the two groups of valve plate bodies 2 when they are combined inside the valve seat 1.

[0030] like Figure 1 and Figure 2 As shown, the inner wall surface of the valve seat 1 is integrally constructed with trapezoidal retaining bars 3 that abut against the valve plate body 2, and there are two groups of trapezoidal retaining bars 3.

[0031] When in use, the trapezoidal baffle 3 is conveniently abutted against the valve plate body 2, thereby cooperating with the valve plate body 2 to close the channel inside the valve seat 1. At the same time, the trapezoidal baffle 3 in the form of an isosceles ladder has inclined designs on both sides, which is convenient for reducing the circumferential flow of the flue gas, so that the flue gas can circulate more smoothly.

[0032] like Figure 2 and Figure 3As shown, one end of the arc ring 8 close to the groove 7 is equipped with a support rod 12 that is plugged into the groove 7, and there are multiple groups of support rods 12.

[0033] When in use, the support rod 12 and the hole in the groove 7 slide relative to each other, thereby improving the stability of the arc ring 8 during buffering.

[0034] like Figure 1 and Figure 2 As shown, the outer peripheral surface of the valve plate body 2 is integrally constructed with an arc-shaped plate 14 for auxiliary support, and there are multiple groups of arc-shaped plates 14, and support bars 15 are installed between the multiple groups of arc-shaped plates 14.

[0035] When in use, the multiple sets of arc-shaped plates 14 and the support bars 15 are used in conjunction with each other, so as to improve the strength of the hollow valve plate body 2 and enable it to be used more stably.

[0036] The working principle and use process of the utility model: when using, first install the corresponding structural components in the appropriate position. When using the double-axis butterfly valve, the cavity 4 in the valve plate body 2 inside the valve seat 1 is designed to be vacuum-type, and at the same time, it is matched with the internally filled heat-insulating cotton layer 5, and the supporting layer 6 is convenient for supporting and protecting the heat-insulating cotton layer 5, so that it can operate more stably. At the same time, the heat-insulating cotton layer 5 cooperates with the vacuum-type cavity 4 to improve the sealing performance of the butterfly valve and reduce the efficiency of heat in the flue gas being transferred to the other side through the valve plate body 2, thereby reducing the heat flow. In the event of a loss, when the double-axis butterfly valve is used, and when the two groups of valve plate bodies 2 inside the valve seat 1 are in a closed state, the smoke will impact the hollow valve plate body 2, and the arc ring 8 on the periphery of the valve plate body 2 is convenient for buffering the smoke, and in conjunction with the springs 10 and shock absorbers 11 between the multiple groups of pads 9 between the groove 7 on the periphery of the valve plate body 2 and the arc ring 8, it is convenient to assist in buffering the arc ring 8 and reduce the impact of the smoke impacting the valve plate body 2, so that the valve plate body 2 can operate more stably, and the double-axis butterfly valve can more stably block the smoke channel.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow valve plate of a centerline pinless biaxial butterfly valve, characterized in that: The invention comprises a valve seat (1), wherein a valve plate body (2) is rotatably mounted in the valve seat (1), and the valve plate body (2) has two groups, a cavity (4) is provided in the valve plate body (2), and the cavity (4) is filled with a heat insulating cotton layer (5) and a support layer (6); The outer wall surface of the valve plate body (2) is provided with a groove (7), and an arc ring (8) is slidably installed in the groove (7), and the arc ring (8) is equipped with a pad (9) on the side opposite to the groove (7), and there are multiple groups of pads (9), and a spring (10) for buffering is installed between two groups of pads (9), and a shock absorber (11) located between the two groups of pads (9) is installed on the inner periphery of the spring (10).

2. A hollow valve plate of a centerline pinless biaxial butterfly valve according to claim 1, characterized in that: The surfaces of the two groups of valve plate bodies (2) that are in contact with each other are both provided with arc-shaped grooves (13) that fit in with each other.

3. The hollow valve plate of a centerline pinless biaxial butterfly valve according to claim 1 is characterized in that: The inner wall surface of the valve seat (1) is integrally constructed with trapezoidal retaining bars (3) that abut against the valve plate body (2), and there are two groups of trapezoidal retaining bars (3).

4. The hollow valve plate of a centerline pinless biaxial butterfly valve according to claim 1 is characterized in that: One end of the arc-shaped ring (8) close to the groove (7) is equipped with a support rod (12) plug-connected with the groove (7), and there are multiple groups of support rods (12).

5. The hollow valve plate of a centerline pinless biaxial butterfly valve according to claim 1 is characterized in that: The outer peripheral surface of the valve plate body (2) is integrally constructed with an arc-shaped plate (14) for auxiliary support, and there are multiple groups of arc-shaped plates (14), and support bars (15) are installed between the multiple groups of arc-shaped plates (14).

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