Flow valve with air volume control structure

Abstract

The utility model discloses a flow valve with an air volume control structure, which comprises a valve body mounted on a pipeline through a flange plate, and further comprises an early warning mechanism arranged in a valve cover and used for early warning when a valve core is blocked by foreign matters in the rotating process, and the early warning mechanism comprises a mounting block arranged in the valve cover, a mounting cavity is formed in the mounting block, a rotating rod is rotationally connected to the mounting cavity, a first conductive plate is connected to the interior of the early warning cavity through a sliding plate, and a second conductive plate is arranged on the bottom wall of the early warning cavity. According to the utility model, through the arrangement of the early warning mechanism, an operator is early warned by utilizing the power-on flickering of the early warning lamp, so that the operator can timely master the blocking and clamping conditions of the valve core, the valve body is convenient to maintain, and the damage to the internal structure of the valve body caused by the forced rotation of the valve core under resistance is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flow valves, in particular to a flow valve with an air volume control structure. Background Art

[0002] The flow control valve changes the degree of openness of the channel by adjusting the position of the valve core, thereby controlling the air flow through the valve. When in use, impurities in the pipeline, such as rust, particles, sediments, etc., will be brought into the valve during the flow of the air source, thereby blocking the valve channel or attaching to the valve core, affecting the normal operation of the valve. The flow control valve in the prior art can be adjusted by turning the crank. Although the convenience of valve operation is improved, when the valve is blocked by foreign matter, due to the lack of an early warning mechanism, the valve is forced to rotate under resistance, which will cause damage to the internal structure of the valve. For example, the valve core, valve seat or other key components may be worn, deformed or cracked, causing the valve to fail or need to be replaced, thereby further reducing the service life of the flow control valve.

[0003] Therefore, a flow valve with an air volume control structure is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a flow valve with an air volume control structure to solve the problem of lack of an early warning mechanism during the rotation process when the valve is blocked by foreign matter in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flow valve with an air volume control structure, comprising a valve body installed on a pipeline through a flange, the valve body consisting of a valve body and a valve cover connected to the valve body through a plurality of bolts, a valve core is arranged in the valve body, a control rod for rotating the valve core is arranged on the valve cover, a crank is fixedly connected to one end of the control rod away from the valve cover, and an early warning mechanism is arranged in the valve cover for early warning when the valve core is blocked by foreign matter during rotation;

[0006] The early warning mechanism includes a mounting block arranged in the valve cover, a mounting cavity is opened in the mounting block, a rotating rod is rotatably connected to the mounting cavity, one end of the rotating rod is connected to the valve core, and the other end of the rotating rod is connected to the control rod through a connecting mechanism, and the control rod is located on the inner side wall of the mounting cavity and has an early warning cavity opened, a first conductive plate is connected to the early warning cavity through a sliding plate, a second conductive plate is arranged on the bottom wall of the early warning cavity, the first conductive plate and the second conductive plate are arranged opposite to each other, and a guide component for guiding the movement of the sliding plate is provided in the early warning cavity.

[0007] The valve cover is provided with a warning light, and the first conductive plate, the second conductive plate and the warning light are electrically connected.

[0008] The connecting mechanism includes a connecting rod slidably connected to a control rod located at one end of the warning chamber, one end of the connecting rod is connected to a sliding plate, the other end of the connecting rod is fixedly connected to a first connecting circular plate, the other side of the first connecting circular plate is fixedly connected to a plurality of first connecting blocks, the other end of the rotating rod is fixedly connected to a second connecting circular plate, the other side of the second connecting circular plate is fixedly connected to a plurality of second connecting blocks, and each of the first connecting blocks and the second connecting blocks are meshingly arranged.

[0009] Two opposite side walls of each of the first connecting block and the second connecting block are provided with inclined surfaces.

[0010] The guide assembly comprises a plurality of spline grooves formed on the inner wall of the early warning cavity, each of the spline grooves being slidably connected with a spline plate, and one end of each of the spline plates being connected to a sliding plate.

[0011] The connecting rod is sleeved with a spring on the side wall inside the early warning cavity, and the two ends of the spring are respectively connected to the sliding plate and the inner wall of the early warning cavity.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides an early warning mechanism and utilizes the flashing of the early warning light to warn the operator, so that the operator can timely understand the blockage and stagnation of the valve core, thereby facilitating the maintenance of the valve body and avoiding damage to the internal structure of the valve body caused by the forced rotation of the valve core under resistance, thereby further ensuring the safety of the flow valve in regulating and controlling the air volume and ensuring the normal service life of the flow valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the early warning mechanism of the utility model;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0018] In the figure: 101, pipeline; 102, valve body; 103, valve cover; 104, valve core; 105, control rod; 106, crank; 201, mounting block; 202, mounting cavity; 203, rotating rod; 204, warning cavity; 205, sliding plate; 206, first conductive plate; 207, second conductive plate; 208, warning light; 301, connecting rod; 302, first connecting circular plate; 303, first connecting block; 304, second connecting circular plate; 305, second connecting block; 306, inclined surface; 401, spline groove; 402, spline plate; 5, spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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 in 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.

[0020] Example 1

[0021] See also Figure 1-Figure 4 , a flow valve with an air volume control structure shown in the figure includes a valve body installed on a pipeline 101 through a flange, the valve body is composed of a valve body 102 and a valve cover 103 connected to the valve body 102 through a plurality of bolts, a valve core 104 is arranged in the valve body 102, a control rod 105 for rotating the valve core 104 is arranged on the valve cover 103, a crank 106 is fixedly connected to one end of the control rod 105 away from the valve cover 103, and an early warning mechanism is also provided in the valve cover 103 for early warning when the valve core 104 is blocked by foreign matter during rotation;

[0022] The early warning mechanism includes a mounting block 201 arranged in the valve cover 103, a mounting cavity 202 is provided in the mounting block 201, a rotating rod 203 is rotatably connected to the mounting cavity 202, one end of the rotating rod 203 is connected to the valve core 104, and the other end of the rotating rod 203 is connected to the control rod 105 through a connecting mechanism, the control rod 105 is located in the mounting cavity 202, and an early warning cavity 204 is provided on the inner side wall, a first conductive plate 206 is connected to the early warning cavity 204 through a sliding plate 205, a second conductive plate 207 is provided on the bottom wall of the early warning cavity 204, the first conductive plate 206 and the second conductive plate 207 are arranged oppositely, and a guide component for guiding the movement of the sliding plate 205 is provided in the early warning cavity 204;

[0023] It should be noted here that: through the setting of the early warning mechanism, the early warning light 208 is powered on and flashing to warn the operator, so that the staff can timely understand the blockage and jamming of the valve core 104, thereby facilitating the maintenance of the valve body and avoiding the valve core 104 being forced to rotate under resistance and causing damage to the internal structure of the valve body, thereby further ensuring the safety of the flow valve when adjusting and controlling the air volume and ensuring the normal service life of the flow valve.

[0024] It is worth noting that: as a prior art, the specific structure and working principle of the flow control valve have been mastered by people in this field, and will not be elaborated here.

[0025] See also Figure 1 , a warning light 208 is provided on the valve cover 103 shown in the figure, and the first conductive plate 206 and the second conductive plate 207 are electrically connected to the warning light 208;

[0026] It should be noted here that the warning light 208 is provided to provide intuitive observation for the operator.

[0027] See also Figure 3 and Figure 4 The connecting mechanism shown in the figure includes a connecting rod 301 slidably connected to the control rod 105 at one end of the warning chamber 204, one end of the connecting rod 301 is connected to the sliding plate 205, the other end of the connecting rod 301 is fixedly connected to a first connecting circular plate 302, the other side of the first connecting circular plate 302 is fixedly connected to a plurality of first connecting blocks 303, the other end of the rotating rod 203 is fixedly connected to a second connecting circular plate 304, the other side of the second connecting circular plate 304 is fixedly connected to a plurality of second connecting blocks 305, and each first connecting block 303 and the second connecting block 305 are meshedly arranged;

[0028] It should be noted here that: through the setting of the connecting mechanism, it is convenient to drive the valve core 104 to rotate through the crank 106.

[0029] See also Figure 3 and Figure 4 , the two opposite side walls of each of the first connecting block 303 and the second connecting block 305 shown in the figure are provided with inclined surfaces 306;

[0030] It should be noted here that: through the setting of the inclined surface 306, when the valve core 104 is stuck by impurities in the pipeline 101, the rotational resistance of the valve core 104 will increase. When the rotational resistance of the valve core 104 is greater than the clamping force of the spring 5 on the first connecting block 303 and the second connecting block 305, under the interaction force of the inclined surface 306 and the guiding action of the guide assembly, the sliding plate 205 at one end of the connecting rod 301 will be pushed to move in the early warning chamber 204.

[0031] See also Figure 3 and Figure 4 , the connecting rod 301 shown in the figure is located on the side wall inside the warning cavity 204 and is sleeved with a spring 5, and the two ends of the spring 5 are respectively connected to the sliding plate 205 and the inner wall of the warning cavity 204;

[0032] It should be noted here that: the spring 5 is provided to provide a pressing force when the first connecting block 303 and the second connecting block 305 abut against each other.

[0033] Working principle: When the air volume of the flow valve is adjusted and controlled, the control rod 105 is driven to rotate by rotating the crank 106. During the rotation of the control rod 105, the connecting rod 301 is driven to rotate through the guide assembly. During the rotation of the connecting rod 301, the first connecting block 303 and the second connecting block 305 are used to offset each other to drive the rotating rod 203 to rotate, thereby further driving the valve core 104 to rotate. The degree of on-off of the channel is changed by adjusting the position of the valve core 104, thereby controlling the air flow through the valve;

[0034] When the valve core 104 is stuck by impurities in the pipeline 101, the rotational resistance of the valve core 104 will increase. When the rotational resistance of the valve core 104 is greater than the pressing force of the spring 5 on the first connecting block 303 and the second connecting block 305, the sliding plate 205 at one end of the connecting rod 301 will be pushed to move in the warning chamber 204 under the interaction force of the inclined surface 306 and the guiding action of the guide component, so that the first conductive plate 206 and the second conductive plate 207 are abutted against each other, thereby connecting the circuit of the warning light 208, making the warning light 208 power on and flashing, so as to warn the operator and enable the operator to timely understand the blockage of the valve core 104, thereby facilitating the maintenance of the valve body and avoiding the damage to the internal structure of the valve body caused by the forced rotation of the valve core 104 under the resistance, thereby further ensuring the safety of the flow valve in regulating and controlling the air volume and ensuring the normal service life of the flow valve.

[0035] Example 2

[0036] See also Figure 4 This embodiment further illustrates Example 1. The guide assembly shown in the figure includes a plurality of spline grooves 401 formed on the inner wall of the warning cavity 204. A spline plate 402 is slidably connected in each spline groove 401. One end of each spline plate 402 is connected to the sliding plate 205.

[0037] It should be noted here that: through the setting of the connecting component, during the rotation of the crank 106, the connection between the spline groove 401 and the spline plate 402 will synchronously drive the connecting rod 301 to rotate, and provide guidance and limiting effects for the movement of the first connecting block 303.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A flow valve with an air volume control structure, comprising: A valve body mounted on a pipeline (101) via a flange, the valve body comprising a valve body (102) and a valve cover (103) connected to the valve body (102) via a plurality of bolts, a valve core (104) being provided in the valve body (102), a control rod (105) for rotating the valve core (104) being provided on the valve cover (103), and a crank (106) being fixedly connected to one end of the control rod (105) away from the valve cover (103); It is characterized by further comprising: An early warning mechanism is arranged in the valve cover (103) and is used to warn when the valve core (104) is blocked by foreign matter during rotation; The early warning mechanism comprises a mounting block (201) arranged in the valve cover (103), a mounting cavity (202) being provided in the mounting block (201), a rotating rod (203) being rotatably connected to the mounting cavity (202), one end of the rotating rod (203) being connected to the valve core (104), and the other end of the rotating rod (203) being connected to the control rod (105) via a connecting mechanism, a early warning cavity (204) being provided on the inner side wall of the mounting cavity (202), a first conductive plate (206) being connected to the early warning cavity (204) via a sliding plate (205), a second conductive plate (207) being provided on the bottom wall of the early warning cavity (204), the first conductive plate (206) and the second conductive plate (207) being arranged opposite to each other, and a guide component for guiding the movement of the sliding plate (205) being provided in the early warning cavity (204).

2. The flow valve with air volume control structure according to claim 1, characterized in that: The valve cover (103) is provided with a warning light (208), and the first conductive plate (206) and the second conductive plate (207) are electrically connected to the warning light (208).

3. The flow valve with air volume control structure according to claim 1, characterized in that: The connection mechanism comprises a connection rod (301) slidably connected to an end of a control rod (105) located in a warning chamber (204); one end of the connection rod (301) is connected to a sliding plate (205); the other end of the connection rod (301) is fixedly connected to a first connection circular plate (302); the other side of the first connection circular plate (302) is fixedly connected to a plurality of first connection blocks (303); the other end of the rotating rod (203) is fixedly connected to a second connection circular plate (304); the other side of the second connection circular plate (304) is fixedly connected to a plurality of second connection blocks (305); and each of the first connection blocks (303) and the second connection blocks (305) are meshedly arranged.

4. The flow valve with air volume control structure according to claim 3, characterized in that: Two opposite side walls of each of the first connecting block (303) and the second connecting block (305) are provided with inclined surfaces (306).

5. The flow valve with air volume control structure according to claim 1, characterized in that: The guide assembly comprises a plurality of spline grooves (401) formed on the inner wall of the warning cavity (204), each of the spline grooves (401) being slidably connected with a spline plate (402), and one end of each of the spline plates (402) being connected to a sliding plate (205).

6. The flow valve with air volume control structure according to claim 3, characterized in that: The connecting rod (301) is sleeved with a spring (5) on the side wall inside the warning cavity (204), and the two ends of the spring (5) are respectively connected to the sliding plate (205) and the inner wall of the warning cavity (204).

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