Venturi heat preservation valve body structure with unbalanced valve element

Abstract

The utility model relates to the technical field of valve bodies, in particular to a Venturi heat preservation valve body structure with an unbalanced valve element, which comprises a valve body, a valve rod, a valve element mechanism, an upper valve cover, a valve seat and a temperature control mechanism, a valve cavity is arranged in the valve body, an inlet and an outlet are arranged on the valve body in a mutually perpendicular mode, and both the inlet and the outlet are communicated with the valve cavity. The top of the valve body is provided with an opening, the valve body structure further comprises a sealing part, the sealing part is of an annular structure, the valve element mechanism adopts the multiple stages of valve elements which are connected with one another, each stage of valve element shares a part of pressure difference through matching of the valve elements, the multiple stages of inner cylinders and the valve seat, and the valve element structure is suitable for a high-pressure-difference environment. The inlet and the outlet are of a Venturi structure, the main valve element is an unbalanced valve element, and fluid backflow is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to a Venturi thermal insulation valve body structure with an unbalanced valve core. Background Art

[0002] The existing valve body is generally not suitable for fluid environments with high pressure difference, and generally does not have a heat preservation function. Moreover, the fluid entering the valve body may have a high turbulence, a large pressure head loss, unstable fluid flow, and uneven flow speed. For application environments with high pressure difference, fluid reflux is likely to occur due to fluid instability. In addition, in some chemical application environments, how to keep the fluid in the valve warm has also become a problem to be solved;

[0003] Therefore, how to design a Venturi insulation valve body structure with an unbalanced valve core so that it is suitable for a fluid environment with a high pressure difference, has a heat preservation function, and prevents fluid backflow has become a problem to be solved. Utility Model Content

[0004] The utility model aims to provide a Venturi insulation valve body structure with an unbalanced valve core to solve the above problems.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] A Venturi insulated valve body structure with an unbalanced valve core, used in a high-pressure difference environment, includes a valve body, a valve stem, a valve core mechanism, an upper valve cover, a valve seat and a temperature control mechanism, a valve cavity is arranged inside the valve body, an inlet and an outlet are arranged perpendicular to each other on the valve body, the inlet and the outlet are communicated with the valve cavity, the top opening of the valve body is arranged, the valve body structure also includes a sealing member, the sealing member is an annular structure as a whole, corresponding to the opening at the top of the valve body, the outer wall of the sealing member is fitted with the inner wall of the valve body, the upper valve cover is mounted on the top of the valve body, the valve core mechanism is located in the valve cavity, the valve stem is fixedly connected to the valve core mechanism, and is used to control the opening of the valve body structure, the valve seat is arranged at the bottom of the valve cavity, and the temperature control mechanism is arranged around the valve body, and is used to insulate the valve body structure.

[0007] Preferably, the bottom surface of the upper valve cover fits with the top surface of the sealing member, the edge portion of the upper valve cover is bolted to the valve body, a through hole is penetrated through the middle portion of the upper valve cover, the valve stem limiter is arranged in the through hole, the first end of the valve stem passes through the upper valve cover upward and is fixedly connected to a transmission member, and the second end of the valve stem passes through the valve cavity downward and is fixedly connected to the valve core mechanism.

[0008] Preferably, the valve body structure also includes a multi-stage inner cylinder, which is arranged on the valve seat and has a side wall that fits with the valve body. The multi-stage inner cylinder is a hollow cylindrical structure, and a first protrusion and a second protrusion are arranged on the inner wall of the multi-stage inner cylinder, and the first protrusion and the second protrusion are arranged at intervals.

[0009] Preferably, an inner wall of the upper valve cover is provided with an internal thread, and the valve stem is provided with an external thread. The valve stem is threadedly connected to the upper valve cover, so that the valve stem can move along the through hole in the middle of the upper valve cover.

[0010] Preferably, the valve core mechanism includes a connecting core, an intermediate core and a main valve core. Connecting columns are provided between the connecting core and the intermediate core, and between the intermediate core and the main valve core. The connecting core is fixedly connected to the valve stem. The valve stem can drive the valve core mechanism to move up and down. When the valve core mechanism moves downward to the maximum stroke, the side wall of the main valve core abuts against the inner wall of the valve seat.

[0011] Preferably, a heat-insulating shell is further provided on the valve body, and the heat-insulating shell is arranged around the valve body, and there is a fixed space between the heat-insulating shell and the valve body for heat-insulating the valve body.

[0012] Preferably, the temperature control mechanism comprises a connecting head and a temperature control tube, and the connecting head is arranged on the temperature control tube.

[0013] Preferably, the upper end of the main valve core is a frustum structure, and the lower end is a cylindrical structure.

[0014] Preferably, the inlet and the outlet on the valve body are arranged to expand in diameter outward from the valve cavity.

[0015] The beneficial effects of the utility model are:

[0016] 1. The valve core mechanism of the utility model adopts a multi-stage valve core, and the valve cores of each stage are connected to each other. Through the cooperation of the valve core, the multi-stage inner tube and the valve seat, each stage of the valve core shares a part of the pressure difference, which is suitable for high pressure difference environment. The inlet and outlet are equipped with a Venturi structure, and the main valve core is an unbalanced valve core to prevent fluid backflow;

[0017] 2. The utility model can slow down the speed of temperature reduction of the fluid in the valve by setting a fixed space between the heat-insulating shell and the valve body, and can introduce hot water through the connecting head to fill the temperature-control pipe, thereby achieving heat preservation of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 3 It is a schematic diagram of the cooperation between the valve core mechanism, the multi-stage inner cylinder and the valve seat;

[0021] In the figure:

[0022] 1-valve body, 101-inlet, 102-outlet, 103-insulation shell;

[0023] 2-valve stem, 201-external thread;

[0024] 301-connecting core, 302-intermediate core, 303-main valve core, 304-connecting column;

[0025] 4-upper valve cover, 401-internal thread;

[0026] 5-valve seat;

[0027] 601-connecting head, 602-temperature control tube;

[0028] 7- Seal;

[0029] 8- transmission parts;

[0030] 9-multi-stage inner cylinder, 901-first protrusion, 902-second protrusion. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions of the structural schematic diagram in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1-3As shown, a Venturi insulated valve body structure with an unbalanced valve core is used in a high pressure difference environment, including a valve body 1, a valve stem 2, a valve core mechanism, an upper valve cover 4, a valve seat 5 and a temperature control mechanism. A valve cavity is arranged inside the valve body 1, an inlet 101 and an outlet 102 are arranged perpendicularly to each other on the valve body 1, the inlet 101 and the outlet 102 are both connected to the valve cavity, the top opening of the valve body 1 is arranged, and the valve body structure also includes a sealing member 7, which is an annular structure as a whole and is arranged correspondingly at the opening at the top of the valve body 1, and the outer wall of the sealing member 7 is connected to the inner wall of the valve body 1. The valve body 1 is fitted with a wall, the upper valve cover 4 is mounted on the top of the valve body 1, the valve core mechanism is located in the valve cavity, the valve stem 2 is fixedly connected to the valve core mechanism, and is used to control the opening of the valve body structure. The valve seat 5 is arranged at the bottom of the valve cavity, and the temperature control mechanism is arranged around the valve body 1 to insulate the valve body structure; the valve core mechanism adopts a multi-stage valve core, and the valve cores of each stage are connected to each other. Through the cooperation of the valve core, the multi-stage inner tube 9 and the valve seat 5, each stage of the valve core shares a part of the pressure difference, which is suitable for high pressure difference environment, the inlet and outlet are equipped with a Venturi structure, and the main valve core 303 is an unbalanced valve core to prevent fluid backflow;

[0033] In some embodiments, the bottom surface of the upper valve cover 4 fits with the top surface of the sealing member 7, the edge portion of the upper valve cover 4 is bolted to the valve body 1, a through hole is penetrated through the middle portion of the upper valve cover 4, the valve stem 2 is limitedly arranged in the through hole, the first end of the valve stem 2 passes through the upper valve cover 4 upwards and is fixedly connected to the transmission member 8, and the second end of the valve stem 2 passes through the valve cavity downwards and is fixedly connected to the valve core mechanism;

[0034] In some embodiments, the valve body structure further includes a multi-stage inner cylinder 9, which is disposed on the valve seat 5, and whose side wall is in contact with the valve body 1. The multi-stage inner cylinder 9 is a hollow cylindrical structure, and a first protrusion 901 and a second protrusion 902 are arranged on the inner wall of the multi-stage inner cylinder 9, and the first protrusion 901 and the second protrusion 902 are arranged at intervals.

[0035] In some embodiments, an internal thread 401 is provided on the inner wall of the upper valve cover 4, and an external thread 201 is provided on the valve stem 2. The valve stem 2 is threadedly connected to the upper valve cover 4, so that the valve stem 2 can move along the through hole in the middle of the upper valve cover 4;

[0036] In some embodiments, the valve core mechanism includes a connecting core 301, an intermediate core 302 and a main valve core 303. A connecting column 304 is provided between the connecting core 301 and the intermediate core 302, and between the intermediate core 302 and the main valve core 303. The connecting core 301 is fixedly connected to the valve stem 2. The valve stem 2 can drive the valve core mechanism to move up and down. When the valve core mechanism moves downward to the maximum stroke, the side wall of the main valve core 303 abuts against the inner wall of the valve seat 5.

[0037] In some embodiments, a heat-insulating shell 103 is further provided on the valve body 1. The heat-insulating shell 103 is arranged around the valve body 1, and there is a fixed space between the heat-insulating shell 103 and the valve body 1 for heat-insulating the valve body 1.

[0038] In some embodiments, the temperature control mechanism includes a connecting head 601 and a temperature control tube 602, and the connecting head 601 is arranged on the temperature control tube 602; by setting a fixed space between the heat preservation shell 103 and the valve body 1, the temperature reduction speed of the fluid in the valve can be slowed down, and hot water can be introduced through the connecting head 601 to fill the temperature control tube 602, thereby achieving the heat preservation of the valve body;

[0039] In some embodiments, the upper end of the main valve core 303 is a frustum structure, and the lower end is a cylindrical structure;

[0040] In some embodiments, the inlet 101 and the outlet 102 on the valve body 1 are arranged to expand in diameter outward from the valve cavity.

Claims

1. A Venturi insulation valve body structure with an unbalanced valve core, used in a high pressure difference environment, characterized in that: The invention comprises a valve body (1), a valve stem (2), a valve core mechanism, an upper valve cover (4), a valve seat (5) and a temperature control mechanism, wherein a valve cavity is arranged inside the valve body (1), an inlet (101) and an outlet (102) are arranged perpendicularly to each other on the valve body (1), the inlet (101) and the outlet (102) are both connected to the valve cavity, the top of the valve body (1) is provided with an opening, the valve body structure further comprises a sealing member (7), the sealing member (7) is an annular structure as a whole, and is arranged correspondingly at the opening at the top of the valve body (1), the outer wall of the sealing member (7) is in contact with the inner wall of the valve body (1), the upper valve cover (4) is mounted on the top of the valve body (1), the valve core mechanism is located in the valve cavity, the valve stem (2) is fixedly connected to the valve core mechanism, and is used to control the opening of the valve body structure, the valve seat (5) is arranged at the bottom of the valve cavity, and the temperature control mechanism is arranged around the valve body (1) and is used to insulate the valve body structure.

2. The Venturi insulation valve body structure with an unbalanced valve core according to claim 1, characterized in that: The bottom surface of the upper valve cover (4) is in contact with the top surface of the sealing member (7); the edge portion of the upper valve cover (4) is bolted to the valve body (1); a through hole is provided in the middle portion of the upper valve cover (4); the valve stem (2) is limitedly arranged in the through hole; its first end passes through the upper valve cover (4) upward and is fixedly connected to a transmission member (8); and its second end passes through the valve cavity downward and is fixedly connected to the valve core mechanism.

3. The Venturi insulation valve body structure with an unbalanced valve core according to claim 2, characterized in that: The valve body structure further comprises a multi-stage inner cylinder (9), wherein the multi-stage inner cylinder (9) is arranged on the valve seat (5), and its side wall is in contact with the valve body (1); the multi-stage inner cylinder (9) is a hollow cylindrical structure, and a first protrusion (901) and a second protrusion (902) are arranged on the inner wall of the multi-stage inner cylinder (9), and the first protrusion (901) and the second protrusion (902) are arranged at intervals.

4. The Venturi insulation valve body structure with an unbalanced valve core according to claim 3, characterized in that: An internal thread (401) is provided on the inner wall of the upper valve cover (4), and an external thread (201) is provided on the valve stem (2). The valve stem (2) is threadedly connected to the upper valve cover (4), so that the valve stem (2) can move along a through hole in the middle of the upper valve cover (4).

5. The Venturi insulation valve body structure with an unbalanced valve core according to claim 4, characterized in that: The valve core mechanism comprises a connecting core (301), an intermediate core (302) and a main valve core (303); connecting columns (304) are provided between the connecting core (301) and the intermediate core (302) and between the intermediate core (302) and the main valve core (303); the connecting core (301) is fixedly connected to the valve stem (2); the valve stem (2) can drive the valve core mechanism to move up and down; when the valve core mechanism moves downward to a maximum stroke, the side wall of the main valve core (303) abuts against the inner wall of the valve seat (5).

6. The Venturi insulation valve body structure with an unbalanced valve core according to claim 5, characterized in that: The valve body (1) is also provided with a heat-insulating shell (103), which is arranged around the valve body (1), and a fixed space exists between the heat-insulating shell (103) and the valve body (1), for heat-insulating the valve body (1).

7. The Venturi insulation valve body structure with an unbalanced valve core according to claim 6, characterized in that: The temperature control mechanism comprises a connecting head (601) and a temperature control tube (602), and the connecting head (601) is arranged on the temperature control tube (602).

8. The Venturi insulation valve body structure with an unbalanced valve core according to claim 7, characterized in that: The upper end of the main valve core (303) is a frustum structure, and the lower end is a cylindrical structure.

9. The Venturi insulation valve body structure with an unbalanced valve core according to claim 8, characterized in that: The inlet (101) and the outlet (102) on the valve body (1) are arranged to expand in diameter outward from the valve cavity.

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