Plug valve

Abstract

The utility model provides a plug valve which comprises a container, a first switch assembly, a valve body and a second switch assembly. The container is used for collecting condensate; the first switch assembly is arranged in the container and comprises a floating ball structure, a through pipe and a connecting block with a spherical outer contour, the connecting block is arranged in the through pipe, a first channel and the floating ball structure are arranged on the connecting block, one end of the floating ball structure penetrates through the through pipe to be connected with the connecting block, and the floating ball structure is rotationally connected with the through pipe; the floating ball structure is matched with the connecting block to control the communication state of the through pipe; the valve body is arranged on the container, a second channel and a third channel are arranged on the valve body, the second channel is communicated with the container, a first interlayer is arranged in the second channel, a through hole is formed in the first interlayer, and the third channel is communicated with the through pipe; the second switch assembly is arranged on the valve body and used for controlling the communication state of the through hole. According to the utility model, the problem that the flow of condensate in the traditional drain valve is suddenly large and suddenly small is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam traps, in particular to a plug valve. Background Art

[0002] A steam trap is a valve, also known as a steam trap or a drain valve, which is used to discharge condensed water, air and carbon dioxide gas in the steam system as quickly as possible, while automatically preventing steam leakage to the maximum extent. There are many types of steam traps, each with different performances.

[0003] Conventional steam traps have the problem of fluctuating condensate flow rates. Utility Model Content

[0004] Based on this, in order to solve the problem that the flow rate of condensate in the traditional steam trap is fluctuating, the utility model provides a plug valve, and its specific technical solution is as follows:

[0005] A plug valve comprising

[0006] a container for collecting condensate;

[0007] A first switch assembly, the first switch assembly is arranged in the container, the first switch assembly comprises a float structure, a through pipe and a connecting block with a spherical outer contour, the connecting block is arranged in the through pipe, a first channel is arranged on the connecting block, the float structure, one end of the float structure passes through the through pipe and is connected to the connecting block, the float structure is rotatably connected to the through pipe, and the float structure cooperates with the connecting block to control the connection state of the through pipe;

[0008] a valve body, the valve body being arranged on the container, the valve body being provided with a second channel and a third channel, the second channel being communicated with the container, a first partition being arranged in the second channel, the first partition being provided with a through hole, and the third channel being communicated with the through pipe;

[0009] A second switch component is disposed on the valve body, and is used to control the connection state of the through hole.

[0010] The above-mentioned plug valve collects condensate by being provided with a container; when the condensate in the container increases, the float structure rises with the liquid level of the condensate, and then drives the connection block to rotate, so that the first channel is connected with the through pipe, and then under the pressure of the steam in the container, the condensate is discharged to the outside through the through pipe; the flow rate of the first channel and the through pipe is controlled by the change of the rising height of the float; the connection state of the through hole is controlled by the second switch component to control the working state of the plug valve. The plug valve solves the problem of the fluctuating flow rate of condensate in traditional steam traps.

[0011] Furthermore, the second switch includes a sleeve and a rotating assembly, the sleeve is disposed on the valve body, the sleeve is communicated with the second channel, and the rotating assembly is inserted into the sleeve and is rotationally connected to the sleeve.

[0012] Furthermore, the rotating assembly includes a rotating rod, a sealing assembly and a bellows, a second partition is provided in the sleeve, one end of the rotating rod passes through the sleeve and the second partition and is connected to the sealing assembly, and a handle is provided on the other end of the rotating rod, and the rotating rod is rotatably connected to the sleeve.

[0013] Furthermore, the blocking assembly includes a fixed seat and a blocking block with a spherical outer contour, the fixed seat is provided with a flange, the rotating rod is inserted into the fixed seat and clamped with the flange, and the blocking block is arranged on the fixed seat.

[0014] Furthermore, the bellows is arranged in the sleeve, the bellows is sleeved on the rotating rod, one end of the bellows is connected to the fixing seat, and the other end of the bellows is connected to the second partition.

[0015] Furthermore, an abutment block is provided in the through pipe, and a fourth channel running through both ends of the abutment block is provided on the abutment block, the connecting block is half-embedded in the abutment block, the connecting block is rotatably connected to the abutment block, and the float structure cooperates with the connecting block to control the connection state of the fourth channel and the first channel.

[0016] Furthermore, the valve body is provided with a fifth channel and a temperature control membrane box; the fifth channel is communicated with the third channel, and the temperature control membrane box is used to control the communication state of the third channel.

[0017] Furthermore, the float structure includes a float and a swing arm; one end of the swing arm is connected to the float, the other end of the swing arm passes through the through pipe and is connected to the connecting block, and the swing arm is rotatably connected to the through pipe.

[0018] Furthermore, a filter is provided on the valve body, and the second channel is connected to the container through the filter; a filtering space is provided in the valve body, and the filter is arranged in the filtering space; the valve body is also provided with a threaded cover, and the threaded cover is used to control the connection state between the filtering space and the outside world; the threaded cover is rotatably connected to the valve body.

[0019] Furthermore, the third channel includes a first connecting channel, an opening and a second connecting channel with a circular outer contour, and the opening, the second connecting channel and the first connecting channel are connected in sequence; the first connecting channel is connected to the third channel and the through pipe respectively; the second channel passes through the central axis of the second connecting channel and passes through the second connecting channel.

[0020] Furthermore, a sealing ring is sleeved on the rotating rod, and when the second switch assembly is in an open state, the sealing ring is in sealing contact with the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0022] Figure 1 It is a structural schematic diagram of a plug valve according to an embodiment of the utility model;

[0023] Figure 2 This is one of the cross-sectional views of the plug valve described in one embodiment of the utility model;

[0024] Figure 3 This is the second cross-sectional view of the plug valve described in the first embodiment of the utility model;

[0025] Figure 4 yes Figure 2 Enlarged view of part A.

[0026] Description of reference numerals:

[0027] 1-container; 2-float; 3-swing arm; 4-through pipe; 6-first channel; 7-valve body; 8-second channel; 9-third channel; 10-connecting block; 11-abutment block; 12-fifth channel; 13-temperature control membrane box; 14-threaded cover; 15-fourth channel; 16-first compartment; 17-second compartment; 18-sleeve; 19-rotating rod; 20-fixed seat; 21-blocking block; 22-bellows; 23-sealing ring; 24-filter. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described here are only used to explain the utility model and do not limit the protection scope of the utility model.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0032] like Figure 1 As shown in FIG. 4 , a plug valve in one embodiment of the utility model comprises a container 1, a first switch assembly, a valve body 7 and a second switch assembly; the container 1 is used to collect condensate; the first switch assembly is arranged in the container 1, the first switch assembly comprises a float 2 structure, a through pipe 4 and a connecting block 10 with a spherical outer contour, the connecting block 10 is arranged in the through pipe 4, a first channel 6 is provided on the connecting block 10, the float 2 structure, one end of the float 2 structure passes through the through pipe 4 and is connected to the connecting block 10, the float 2 structure is rotatably connected to the through pipe 4, and the float 2 structure cooperates with the connecting block 10 to control the communication state of the through pipe 4; the valve body 7 is arranged on the container 1, and the valve body 7 is provided with a second channel 8 and a third channel 9, the second channel 8 is communicated with the container 1, and a first partition 16 is provided in the second channel 8, and a through hole is provided on the first partition 16, and the third channel 9 is communicated with the through pipe 4; the second switch assembly is arranged on the valve body 7, and the second switch assembly is used to control the communication state of the through hole.

[0033] The above-mentioned plug valve collects condensate by being provided with a container 1; when the condensate in the container 1 increases, the float 2 structure rises with the liquid level of the condensate, and then drives the connecting block 10 to rotate, so that the first channel 6 is connected with the through pipe 4, and then under the pressure of the steam in the container 1, the condensate is discharged to the outside through the through pipe 4; the flow rate of the first channel 6 and the through pipe 4 is controlled by the change of the rising height of the float 2; the connection state of the through hole is controlled by the second switch component to control the working state of the plug valve. The plug valve solves the problem of the fluctuating flow rate of the condensate in the traditional steam trap.

[0034] like Figure 1As shown in FIG. 3 , in one embodiment, the second switch includes a sleeve 18 and a rotating assembly. The sleeve 18 is provided on the valve body 7, the sleeve 18 is communicated with the second channel 8, the rotating assembly is inserted in the sleeve 18 and is rotatably connected with the sleeve 18; the rotating assembly includes a rotating rod 19, a blocking assembly and a bellows 22. A second partition 17 is provided in the sleeve 18, one end of the rotating rod 19 passes through the sleeve 18 and the second partition 17 and is connected to the blocking assembly, and a grip is provided on the other end of the rotating rod 19 The rotating rod 19 is rotatably connected with the sleeve 18; the blocking assembly includes a fixed seat 20 and a blocking block 21 with a spherical outer contour, the fixed seat 20 is provided with a flange, the rotating rod 19 is inserted in the fixed seat 20 and is engaged with the flange, and the blocking block 21 is arranged on the fixed seat 20; the bellows 22 is arranged in the sleeve 18, the bellows 22 is sleeved on the rotating rod 19, one end of the bellows 22 is connected with the fixed seat 20, and the other end of the bellows 22 is connected with the second interlayer 17. In this way, by rotating the rotating rod 19, the movement of the blocking block 21 is controlled, and then the connection state of the through hole is controlled; by providing the bellows 22, steam is prevented from leaking from the second switch assembly; by engaging the flange with the rotating rod 19, when the rotating rod 19 rotates, the blocking assembly and the bellows 32 are prevented from rotating with the connecting rod 31, which affects the air tightness of the valve.

[0035] like Figure 1 As shown in FIG. 4, in one embodiment, an abutment block 11 is provided in the through pipe 4, and a fourth channel 15 is provided on the abutment block 11 and passes through both ends of the abutment block 11, and the connection block 10 is half-embedded in the abutment block 11, and the connection block 10 is rotatably connected to the abutment block 11, and the float 2 structure cooperates with the connection block 10 to control the connection state of the fourth channel 15 and the first channel 6. In this way, by providing the abutment block 11, when the liquid level of the condensate in the container 1 is low, a better sealing effect is achieved.

[0036] like Figure 1 As shown in FIG. 4 , in one embodiment, the valve body 7 is further provided with a fifth channel 12 and a temperature control membrane box 13; the fifth channel 12 is communicated with the third channel 9, and the temperature control membrane box 13 is used to control the communication state of the third channel 9. In this way, by providing the temperature control membrane box 13, it is convenient to discharge the air in the container 1. When the steam reaches the temperature control membrane box 13, the temperature control membrane box 13 automatically blocks the fifth channel 12 to discharge the air and avoid the discharge of steam, thereby achieving high efficiency and energy saving.

[0037] Specifically, the temperature control membrane box 13 is an existing conventional technology, so it will not be described in detail.

[0038] like Figure 1As shown in FIG. 4, in one embodiment, the float 2 structure includes a float 2 and a swing arm 3; one end of the swing arm 3 is connected to the float 2, and the other end of the swing arm 3 passes through the through pipe 4 and is connected to the connecting block 10, and the swing arm 3 is rotatably connected to the through pipe 4. In this way, when the liquid level of the condensate in the container 1 changes, the float 2 drives the swing arm 3 to swing, controls the inclination angle of the first channel 6, and then realizes the control of the flow rate of the condensate.

[0039] like Figure 1 As shown in FIG. 4, in one embodiment, the valve body 7 is further provided with a filter 24, and the second channel 8 is connected to the container 1 through the filter 24; a filter space is provided in the valve body 7, and the filter 24 is provided in the filter space; the valve body 7 is further provided with a threaded cover 14, and the threaded cover 14 is used to control the connection state between the filter space and the outside; the threaded cover 14 is rotatably connected to the valve body 7. In this way, by providing the filter 24, the condensate is filtered first to avoid pipeline blockage; by disassembling the threaded cover 14, it is easy to take out the filter 24, and replace and clean the filter 24.

[0040] like Figure 3 As shown, in one embodiment, a sealing ring 23 is sleeved on the rotating rod 19, and when the second switch assembly is in the open state, the sealing ring 23 is in sealing contact with the sleeve 18. In this way, when the second switch assembly is in the open state, the sealing ring 23 is in sealing contact with the sleeve 18, thereby improving the sealing performance of the second switch assembly and preventing steam leakage.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A plug valve, characterized in that: include a container for collecting condensate; A first switch assembly, the first switch assembly is arranged in the container, the first switch assembly comprises a float structure, a through pipe and a connecting block with a spherical outer contour, the connecting block is arranged in the through pipe, a first channel is arranged on the connecting block, the float structure, one end of the float structure passes through the through pipe and is connected to the connecting block, the float structure is rotatably connected to the through pipe, and the float structure cooperates with the connecting block to control the connection state of the through pipe; a valve body, the valve body being arranged on the container, the valve body being provided with a second channel and a third channel, the second channel being communicated with the container, a first partition being arranged in the second channel, the first partition being provided with a through hole, and the third channel being communicated with the through pipe; A second switch component is disposed on the valve body, and is used to control the connection state of the through hole.

2. The plug valve according to claim 1, characterized in that: The second switch includes a sleeve and a rotating assembly. The sleeve is disposed on the valve body and is communicated with the second channel. The rotating assembly is inserted into the sleeve and is rotationally connected to the sleeve.

3. The plug valve according to claim 2, characterized in that: The rotating assembly includes a rotating rod, a sealing assembly and a bellows. A second partition is provided in the sleeve. One end of the rotating rod passes through the sleeve and the second partition and is connected to the sealing assembly. A handle is provided on the other end of the rotating rod. The rotating rod is rotatably connected to the sleeve.

4. The plug valve according to claim 3, characterized in that: The blocking assembly comprises a fixing seat and a blocking block with a spherical outer contour, the fixing seat is provided with a flange, the rotating rod is inserted into the fixing seat and clamped with the flange, and the blocking block is arranged on the fixing seat.

5. The plug valve according to claim 4, characterized in that: The bellows is arranged in the sleeve, the bellows is sleeved on the rotating rod, one end of the bellows is connected to the fixing seat, and the other end of the bellows is connected to the second partition.

6. The plug valve according to claim 1, characterized in that: A contact block is provided in the through pipe, and a fourth channel is provided on the contact block which runs through both ends of the contact block. The connecting block is half-embedded in the contact block, and the connecting block is rotatably connected to the contact block. The float structure cooperates with the connecting block to control the connection state of the fourth channel and the first channel.

7. The plug valve according to claim 1, characterized in that: The valve body is also provided with a fifth channel and a temperature control membrane box; the fifth channel is communicated with the third channel, and the temperature control membrane box is used to control the communication state of the third channel.

8. The plug valve according to claim 1, characterized in that: The float structure includes a float and a swing arm; one end of the swing arm is connected to the float, the other end of the swing arm passes through the through pipe and is connected to the connecting block, and the swing arm is rotatably connected to the through pipe.

9. The plug valve according to claim 1, characterized in that: The valve body is also provided with a filter, and the second channel is connected to the container through the filter; a filtering space is provided in the valve body, and the filter is arranged in the filtering space; the valve body is also provided with a threaded cover, and the threaded cover is used to control the connection state between the filtering space and the outside world; the threaded cover is rotatably connected to the valve body.

10. The plug valve according to claim 3, characterized in that: A sealing ring is sleeved on the rotating rod, and when the second switch assembly is in an open state, the sealing ring is in sealing contact with the sleeve.

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