Venturi valve with good heat preservation performance

Abstract

The utility model relates to the technical field of venturi valves, in particular to a venturi valve with good heat preservation performance, which comprises a valve body, a vacuum layer is arranged on the outer wall of the valve body, a layer of vacuum heat insulation structure is formed between the vacuum layer and the valve body, and the outer wall of the vacuum layer is fixedly connected with an external heat insulation layer. A lower clamping hoop is arranged on the outer wall of the external heat insulation layer, one side of the lower clamping hoop is integrally bent, and a supporting shaft is arranged in the lower clamping hoop. The external heat insulation layer and the vacuum layer are tightly and fixedly attached to the outside of the venturi valve through the lower clamping hoop and the upper clamping hoop, falling caused by vibration or external force can be avoided, meanwhile, gaps among the external heat insulation layer, the vacuum layer and the venturi valve are discharged and filled through external extrusion force, the attaching degree between the venturi valve and the external heat insulation layer and between the venturi valve and the vacuum layer is ensured, and the service life of the venturi valve is prolonged. Heat conduction between the Venturi valves is reduced, the influence of the heat bridge effect is reduced, and therefore the heat preservation performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of Venturi valves, in particular to a Venturi valve with good heat preservation performance. Background Technique

[0002] A Venturi valve is a valve manufactured based on the principle of the Venturi effect, that is, a Venturi air flow control valve, which can expand the air flow control to the highest level. In order to prevent the temperature loss or overheating of the medium inside the valve and maintain the stable temperature of the medium, it is necessary for the Venturi valve to have good heat preservation performance.

[0003] In the existing Venturi valves, such as a Venturi valve with good heat preservation performance disclosed in the authorized announcement number CN 210240712 U, it uses a blower to supply air flow to the heat preservation chamber, and supplies hot air flow into the heat preservation chamber to realize the continuous supply operation of the heat flow in the heat preservation chamber. When using the blower to blow air flow into the Venturi valve, since the hot air flow near the blower is larger, the air flow will gradually decrease during the air flow transmission process, resulting in too high temperature in some areas of the Venturi valve and insufficient temperature in other areas. The uneven heat will affect the flow characteristics of the fluid. In addition, there is a certain gap between the heat preservation chamber and the Venturi valve, resulting in poor sealing performance. The gap makes the heat more easily conducted between the valve body and the heat preservation layer, thereby weakening the heat preservation effect, causing the heat to be quickly conducted to the external environment through the gap, affecting the temperature stability of the medium inside the valve, and reducing the heat preservation performance. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a Venturi valve with good heat preservation performance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A Venturi valve with good heat preservation performance includes a valve body. A vacuum layer is arranged on the outer wall of the valve body. A vacuum heat insulation structure is formed between the vacuum layer and the valve body. An external heat insulation layer is fixedly connected to the outer wall of the vacuum layer.

[0007] A lower clamping hoop is arranged on the outer wall of the external heat insulation layer. One side of the lower clamping hoop is integrally bent and a support shaft is arranged inside. An installation groove is opened on one side of the outer wall of the lower clamping hoop. A connecting piece is arranged inside the installation groove. An upper clamping hoop is fixedly connected to one side of the connecting piece. The upper clamping hoop is movably connected to the support shaft through the connecting piece.

[0008] Preferably, a central hole is formed on one side of the lower clamping hoop away from the support shaft. A connecting rod is arranged in the central hole. A threaded rod is fixedly connected to the middle of the connecting rod. A fixed shaft sleeve is threadedly connected to the threaded rod.

[0009] Preferably, an electric heating tape is wound around the outer surface of the valve body.

[0010] Preferably, a jacket is filled between the external heat insulation layer and the vacuum layer. A water injection pipe is arranged at the top of the jacket. A water outlet pipe is arranged at the bottom of the external heat insulation layer. Both the water injection pipe and the water outlet pipe are communicated with the inside of the external heat insulation layer. Sealing plugs are arranged at the ends of the water injection pipe and the water outlet pipe.

[0011] Preferably, a valve seat is fixedly connected to the outer wall of the external heat insulation layer.

[0012] Preferably, clamping grooves for the threaded rod to move are formed on the outer walls of the lower clamping hoop and the upper clamping hoop.

[0013] The beneficial effects of the present utility model are as follows:

[0014] The external heat insulation layer and the vacuum layer are tightly fixed and attached to the outside of the Venturi valve by using the lower clamping hoop and the upper clamping hoop, which can avoid falling off caused by vibration or external force. At the same time, the gaps between the external heat insulation layer, the vacuum layer and the Venturi valve are discharged and filled by the externally extruded force, ensuring the degree of fit between them and the Venturi valve, reducing the heat conduction between the Venturi valves, reducing the influence of the thermal bridge effect, and thus improving the heat preservation performance.

[0015] By injecting hot water into the water injection pipe, the hot water flows evenly in the jacket, which is beneficial to maintaining the heat of the Venturi valve, preventing heat dissipation, shortening the preheating time, improving the response speed and working efficiency of the equipment. By winding the electric heating tape in an S shape around the Venturi valve, through its heating effect, the temperature distribution of the Venturi valve is kept uniform, the heat can be quickly transferred to the Venturi valve, further improving the heat preservation effect and preventing temperature changes caused by alternating cold and heat. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of a Venturi valve with good heat preservation performance proposed by the present utility model;

[0017] Figure 2 It is a schematic diagram of the connection structure of the valve body, the vacuum layer and the external heat insulation layer of a Venturi valve with good heat preservation performance proposed by the present utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the lower clamping hoop of a Venturi valve with good heat preservation performance proposed by the present utility model;

[0019] Figure 4 Schematic diagram of the valve body structure of a Venturi valve with good heat preservation performance proposed by the present utility model.

[0020] In the figure:

[0021] 1. Valve body; 2. Vacuum layer; 3. External heat insulation layer; 4. Lower clamping hoop; 5. Support shaft; 6. Installation groove; 7. Upper clamping hoop; 8. Central hole; 9. Connecting rod; 10. Threaded rod; 11. Fixed shaft sleeve; 12. Electric heating tape; 13. Water injection pipe; 14. Water outlet pipe; 15. Valve seat. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0024] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0025] Embodiment:

[0026] Refer to Figures 1-4 , a Venturi valve with good heat preservation performance, including a valve body 1. A vacuum layer 2 is provided on the outer wall of the valve body 1. A vacuum heat insulation structure is formed between the vacuum layer 2 and the valve body 1. An external heat insulation layer 3 is fixedly connected to the outer wall of the vacuum layer 2;

[0027] A lower clamping hoop 4 is provided on the outer wall of the external heat insulation layer 3. One side of the lower clamping hoop 4 is integrally bent and a support shaft 5 is provided inside. An installation groove 6 is opened on one side of the outer wall of the lower clamping hoop 4. A connecting piece is provided inside the installation groove 6. One side of the connecting piece is fixedly connected to an upper clamping hoop 7. The upper clamping hoop 7 is movably connected to the support shaft 5 through the connecting piece.

[0028] A central hole 8 is opened on the side of the lower clamping hoop 4 away from the support shaft 5. A connecting rod 9 is provided inside the central hole 8. A threaded rod 10 is fixedly connected to the middle of the connecting rod 9. A fixed shaft sleeve 11 is threadedly connected to the threaded rod 10.

[0029] An electric heating tape 12 is wound around the outer surface of the valve body 1.

[0030] A jacket is filled between the external heat insulation layer 3 and the vacuum layer 2. A water injection pipe 13 is arranged at the top of the jacket, and a water outlet pipe 14 is arranged at the bottom of the external heat insulation layer 3. Both the water injection pipe 13 and the water outlet pipe 14 are communicated with the inside of the external heat insulation layer 3, and sealing plugs are arranged at the ends of the water injection pipe 13 and the water outlet pipe 14.

[0031] The outer wall of the external heat insulation layer 3 is fixedly connected with a valve seat 15.

[0032] The outer walls of the lower clamping hoop 4 and the upper clamping hoop 7 are provided with clamping grooves for the threaded rod 10 to move.

[0033] In this embodiment, by arranging a vacuum layer 2 outside the valve body 1, a vacuum heat insulation structure is formed between the vacuum layer 2 and the valve body 1, which can reduce heat conduction and convection losses. At the same time, the lower clamping hoop 4 and the upper clamping hoop 7 are clamped outside the external heat insulation layer 3. Rotate the threaded rod 10 so that the threaded rod 10 rotates with the connecting rod 9 as a fulcrum, and then the threaded rod 10 is rotated into the clamping groove on the upper clamping hoop 7. Subsequently, turn the fixed shaft sleeve 11, so that the fixed shaft sleeve 11 rotates downward and gradually presses the lower clamping hoop 4 and the upper clamping hoop 7, so that the external heat insulation layer 3 and the vacuum layer 2 are tightly fixed and attached to the outer wall of the valve body 1, avoiding falling off caused by vibration or external force. At the same time, when the lower clamping hoop 4 and the upper clamping hoop 7 simultaneously squeeze the external heat insulation layer 3 inward, due to the external extrusion, the external heat insulation layer 3 simultaneously squeezes the vacuum layer 2 inward, so that the external heat insulation layer 3 and the vacuum layer 2 simultaneously approach the valve body 1, making the external heat insulation layer 3 and the vacuum layer 2, and the vacuum layer 2 and the valve body 1 closely fit, and the internal voids can be discharged and filled, ensuring the fit degree with the valve body 1, reducing the heat conduction between the valve bodies 1, and reducing the influence of the thermal bridge effect, thereby improving the heat preservation performance.

[0034] Furthermore, while the valve body 1 is working, start the electric heating tape 12 and inject hot water into the water injection pipe 13, so that the hot water flows evenly in the jacket, and the heat is transferred to the surface of the valve body 1 to maintain the heat of the valve body 1, prevent heat dissipation, shorten the preheating time, improve the response speed and working efficiency of the equipment. By coiling the electric heating tape 12 in an S shape on the outer wall of the valve body 1, when the electric heating tape 12 is started, through its heating effect, the temperature distribution of the valve body 1 is kept uniform, and the heat can be quickly transferred to the valve body 1, further improving the heat preservation effect and preventing temperature changes caused by alternating cold and heat.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0037] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A Venturi valve with good heat insulation performance, comprising a valve body (1), characterized in that, The outer wall of the valve body (1) is provided with a vacuum layer (2), a vacuum heat insulation structure is formed between the vacuum layer (2) and the valve body (1), and the outer wall of the vacuum layer (2) is fixedly connected with an external heat insulation layer (3); The outer wall of the external heat insulation layer (3) is provided with a lower clamping hoop (4). One side of the lower clamping hoop (4) is integrally bent and internally provided with a support shaft (5). An installation groove (6) is formed in one side of the outer wall of the lower clamping hoop (4). A connecting piece is arranged inside the installation groove (6). One side of the connecting piece is fixedly connected with an upper clamping hoop (7). The upper clamping hoop (7) is movably connected to the support shaft (5) through the connecting piece.

2. The venturi valve with good heat preservation performance according to claim 1, wherein A central hole (8) is formed in one side of the lower clamping hoop (4) away from the support shaft (5). A connecting rod (9) is arranged inside the central hole (8). A threaded rod (10) is fixedly connected to the middle of the connecting rod (9). A fixed shaft sleeve (11) is threadedly connected to the threaded rod (10).

3. The venturi valve with good heat preservation performance according to claim 1, wherein, An electric heating tape (12) is wound around the outer surface of the valve body (1).

4. A Venturi valve with good heat preservation performance according to claim 1, characterized in that, A jacket is filled between the external heat insulation layer (3) and the vacuum layer (2). A water injection pipe (13) is arranged at the top of the jacket. A water outlet pipe (14) is arranged at the bottom of the external heat insulation layer (3). Both the water injection pipe (13) and the water outlet pipe (14) are communicated with the inside of the external heat insulation layer (3). Sealing plugs are arranged at the ends of the water injection pipe (13) and the water outlet pipe (14).

5. A Venturi valve with good heat preservation performance according to claim 1, characterized in that, A valve seat (15) is fixedly connected to the outer wall of the external heat insulation layer (3).

6. The venturi valve with good heat preservation performance according to claim 2, characterized in that Card slots for the threaded rod (10) to move are formed in the outer walls of the lower clamping hoop (4) and the upper clamping hoop (7).

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