CN215806384U

CN215806384U - Heat insulation valve

Info

Publication number: CN215806384U
Application number: CN202121327370.8U
Authority: CN
Inventors: 陆誉文; 吴蓓; 刘群
Original assignee: Jiangsu Tiantongyuan Environmental Protection Equipment Co ltd
Current assignee: Jiangsu Tiantongyuan Environmental Protection Equipment Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-02-11
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a heat insulation valve, which belongs to the technical field of valves and comprises a valve body, a valve core and a valve shaft, wherein the valve core is positioned in the valve body, the valve shaft is connected with the valve core, the valve core and the valve shaft are used for controlling the valve to be opened and closed, the valve shaft comprises an upper shaft and a lower shaft, the upper shaft is positioned outside the valve body, the lower shaft is movably connected with the valve body, and a first heat insulation layer is arranged between the upper shaft and the lower shaft. The utility model can reduce the heat in the valve body to be conducted out of the valve shaft, reduce the temperature of the working environment of the driving mechanism, improve the reliability of the driving mechanism and prolong the service life of the driving mechanism; the valve shaft becomes disconnected axle from whole axle, convenient production preparation that can be very big, shortens the cycle, and reduce cost, the later stage actuating mechanism of being convenient for change, the valve shaft part, the lower shaft of valve body section reduces the finish machining procedure, and the processing cycle is fast, and the transportation turnover is swift, only needs to change the upper shaft section in the face of the actuating mechanism of the different models of different brands, and is extremely convenient.

Description

Heat insulation valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a heat insulation valve.

Background

In transport pipelines such as gas pipeline, because carry the higher gas of temperature or liquid often in the pipeline, when transport gas or liquid temperature are higher, valve in the pipeline is direct rather than the contact, because the valve shaft, the heat-conduction of valve body is used the spindle nose, the support of executor, the executor is working under surpassing normal operating temperature for a long time, lead to inside overheated inside spare part life-span that has reduced the executor of executor, lead to the executor fault rate to increase, simultaneously, because expend with heat and contract with cold effect, can lead to the valve shaft extension to warp, it blocks to connect the card with the executor, cause the executor during operation card, also can greatly increase the fault rate, increase later stage maintenance replacement cost.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: aiming at the problems in the prior art, the technical problem to be solved by the utility model is to provide a heat insulation valve which has a heat insulation function and is suitable for high-temperature pipelines.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a heat insulation valve comprises a valve body, a valve core and a valve shaft, wherein the valve core is positioned in the valve body, the valve shaft is connected with the valve core, the valve core and the valve shaft are used for controlling the valve to be opened and closed, the valve shaft comprises an upper shaft and a lower shaft, the upper shaft is positioned outside the valve body, the lower shaft is movably connected with the valve body, and a first heat insulation layer is arranged between the upper shaft and the lower shaft.

Preferably, a heat insulation sleeve is arranged on the first heat insulation layer.

Preferably, the valve body is connected with a driving mechanism through a support, the driving mechanism is connected with the valve shaft and used for driving the valve shaft to rotate, and a second heat insulation layer is arranged between the driving mechanism and the support.

Preferably, the support comprises an upper frame and a lower frame, and a third heat insulation layer is arranged between the upper frame and the lower frame.

Preferably, a heat insulation block is arranged between the driving mechanism and the valve shaft.

Preferably, the upper shaft and the lower shaft are connected through a bolt, and the bolt penetrates through the heat insulation sleeve.

Preferably, a positioning pin shaft is arranged between the upper shaft and the lower shaft.

Has the advantages that: compared with the prior art, the utility model has the following advantages: 1. the heat insulation layer and the heat insulation block are arranged at the valve shaft and the support, so that heat in the valve body can be reduced to be conducted out of the valve shaft, the temperature of the working environment of the driving mechanism is reduced, and the reliability and the service life of the driving mechanism are improved; 2. the valve shaft becomes disconnected axle from whole axle, convenient production preparation that can be very big, the cycle is shortened, reduce cost, the later stage actuating mechanism of being convenient for is changed, the valve shaft parts, the lower shaft of valve body section reduces the finish machining procedure, the processing cycle is fast, the transportation turnover is swift, the upper shaft section is smart little, can design the standard component of several kinds of specifications, batch production also can adapt to actuating mechanism connection structure's change very in a flexible way, only need change the upper shaft section in the face of the actuating mechanism of the different models of different brands, it is extremely convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the first thermal insulation layer of the present invention;

FIG. 3 is a schematic view of the construction of the thermoblock of the present invention.

Detailed Description

The present invention will be further illustrated by the following specific examples, which are carried out on the premise of the technical scheme of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, a heat insulation valve comprises a valve body 1, a valve core 2 located in the valve body 1, and a valve shaft 3 connected with the valve core 2, wherein the valve core 2 and the valve shaft 3 are used for controlling the opening and closing of the valve, the valve core 2 is a butterfly plate of a butterfly valve (the valve core 2 can also be an existing spherical valve core, a conical valve core, a disc-shaped valve core, etc., and corresponds to different valve cores according to different valve types), the valve shaft 3 comprises an upper shaft 31 and a lower shaft 32, the upper shaft 31 and the lower shaft 32 are connected through a plurality of bolts 33, the upper shaft 31 is located on the valve body 1, the lower shaft 32 is movably connected with the valve body 1, the lower shaft 32 is fixedly connected with the valve core 2, the lower shaft 32 is driven by the upper shaft 31, so as to control the position of the valve core 2 to close or open the valve, corresponding flange plates are respectively arranged on the upper shaft 31 and the lower shaft 32, a first heat insulation layer 4 is arranged between the two flange plates, a heat insulation sleeve 41 is arranged on the first heat insulation layer 4 corresponding to the bolt 33 for the bolt 33 to pass through, when the flanges of the upper shaft 31 and the lower shaft 32 are connected, the upper end part of the heat insulation sleeve 41 extends into the screw hole corresponding to the flange of the upper shaft 31, the lower end part of the heat insulation sleeve 41 extends into the screw hole corresponding to the flange of the lower shaft 32, the extending height of the upper end and the lower end of the heat insulation sleeve 41 is equal to the thickness of the two flanges, the plurality of bolts 33 penetrate through the two flanges and the heat insulation sleeve 41 to fixedly connect the upper shaft 31 and the lower shaft 32, the first heat insulation layer 4 can reduce the heat conduction between the upper shaft 31 and the lower shaft 32, the heat insulation sleeve 41 can reduce the heat conduction between the bolts and the upper shaft 31 and the lower shaft 32, and therefore the good heat insulation effect is achieved, and heat is prevented from being directly conducted from the interior of the valve body 1 to the exterior of the valve body 1 through the valve shaft 2; a positioning pin 34 is arranged between the upper shaft 31 and the lower shaft 32 and used for positioning the upper shaft 31 and the lower shaft 32 when being aligned, so that the coaxiality of the upper shaft 31 and the lower shaft 32 is ensured.

The valve is an automatically controlled valve, a support 5 is arranged outside the valve body 1, a driving mechanism 6 is arranged on the support 5, a power output end of the driving mechanism 6 is connected with the valve shaft 3 and is used for driving the valve shaft 3 to rotate so as to open or close the valve, the driving mechanism 6 can be an existing actuator mechanism driven electrically, pneumatically or hydraulically, a second heat insulation layer 61 is arranged between the driving mechanism 6 and the support 5, and heat on the support 5 can be well prevented from being transmitted to the driving mechanism 6; the support 5 comprises an upper frame 51 and a lower frame 52, the lower frame 52 is connected to the outer wall of the valve body 1, the upper frame 51 is connected with the driving mechanism 6 and used for supporting the valve body to work, and a third heat insulation layer 53 is arranged between the upper frame 51 and the lower frame 52 and can play a good heat insulation role on the support 5 to prevent heat of the valve body 1 from being directly conducted to the driving mechanism 6.

As shown in fig. 3, in order to better prevent heat from being conducted from the valve shaft 3 to the driving mechanism 6, a heat insulation block 62 is arranged between the output end of the driving mechanism 6 and the valve shaft 3, the output end of the driving mechanism 6 is a groove matched with the end of the valve shaft 3, and the heat insulation block 62 is arranged in the groove at the output end of the driving mechanism 6 and surrounds the end of the valve shaft 3, so that the end of the valve shaft 3 is prevented from directly contacting with the driving mechanism 6, and a better heat insulation effect is achieved.

The valve adopts the electric butterfly valve in this embodiment, and through the action of unilateral executor control case, and electric butterfly valve case control also can adopt two-way control's mode, all installs support 5 in two upper and lower directions of valve body 1 promptly, and lower axle 32 runs through valve body 1, and all is connected with upper shaft 31 at the upper and lower both ends of lower axle 32, conveniently connects actuating mechanism 6 in the equidirectional not, enlarges thermal-insulated valve's application scope.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. The heat insulation valve is characterized by comprising a valve body (1), a valve core (2) positioned in the valve body (1) and a valve shaft (3) connected with the valve core (2), wherein the valve core (2) and the valve shaft (3) are used for controlling the valve to be opened and closed, the valve shaft (3) comprises an upper shaft (31) and a lower shaft (32), the upper shaft (31) is positioned outside the valve body (1), the lower shaft (32) is movably connected with the valve body (1), and a first heat insulation layer (4) is arranged between the upper shaft (31) and the lower shaft (32).

2. Thermal insulation valve according to claim 1, characterized in that a thermal insulation sleeve (41) is provided on the first thermal insulation layer (4).

3. The heat insulation valve according to claim 1, wherein the valve body (1) is connected with a driving mechanism (6) through a bracket (5), the driving mechanism (6) is connected with the valve shaft (3) for driving the valve shaft (3) to rotate, and a second heat insulation layer (61) is arranged between the driving mechanism (6) and the bracket (5).

4. Thermal insulation valve according to claim 2, characterized in that said support (5) comprises an upper frame (51) and a lower frame (52), a third thermal insulation layer (53) being provided between said upper frame (51) and said lower frame (52).

5. Thermal insulation valve according to claim 2, characterized in that a thermal insulation block (62) is provided between the drive mechanism (6) and the valve shaft (3).

6. Thermal insulation valve according to claim 1, characterized in that said upper shaft (31) and lower shaft (32) are connected by means of a bolt (33), said bolt (33) extending through said thermal insulation sleeve (41).

7. Thermal insulation valve according to claim 1, characterized in that a positioning pin (34) is provided between the upper shaft (31) and the lower shaft (32).