Control box cover part sleeve of valve control device

Abstract

The utility model relates to the technical field of electric valves, in particular to a valve control device control box cover part sleeve which comprises a control main body part sleeve and a terminal wiring cavity part sleeve, a plurality of wiring pipes are arranged on the circumferential face of the terminal wiring cavity part sleeve, and the wiring pipes are communicated with the interior of the terminal wiring cavity part sleeve and the exterior of the terminal wiring cavity part sleeve. An end cover is arranged at one end of the terminal wiring cavity sleeve, a connecting structure used for being connected with the control body sleeve is arranged at the end, away from the end rod, of the terminal wiring cavity sleeve, the control body sleeve is provided with a connecting column used for being connected with the terminal wiring cavity sleeve, and the effect that the valve control device control box cover sleeve is more convenient to produce is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electric valves, and in particular to a control box cover of a valve control device. Background Art

[0002] Electric control valves are widely used in various industrial fields, such as petroleum, chemical industry, metallurgy, electric power, papermaking, etc., to control the flow, pressure, temperature and other parameters of fluid media. Common types of electric control valves include electric regulating valves, electric ball valves, electric butterfly valves, etc.

[0003] Existing electric control valves generally include an execution structure and an electric structure. The electric structure controls the execution structure to switch to control the liquid flow. The outside of the electric structure is generally provided with a control box cover for protecting and supporting the internal structure. The electric structure generally needs to be connected to an external power supply through wires. Therefore, the control box cover generally includes a terminal wiring cavity cover. Most of the existing control box cover covers are integrally formed, and most of the terminal wiring cavity covers are located on the side of the control box cover cover.

[0004] The above-mentioned prior art solutions have the following defects: since the control box cover is a special-shaped structure, it is time-consuming and labor-intensive to form the cover in one piece, which is not conducive to the production of the control box cover. Utility Model Content

[0005] In order to facilitate the production of a control box cover portion of a valve control device, the present application provides a control box cover portion of a valve control device.

[0006] The above technical objectives of this application are achieved through the following technical solutions:

[0007] A control box cover of a valve control device comprises a control body cover and a terminal wiring cavity cover, a circumferential surface of the terminal wiring cavity cover is provided with a plurality of wiring tubes, the wiring tubes connect the inside of the terminal wiring cavity cover with the outside of the terminal wiring cavity cover, an end cover is provided at one end of the terminal wiring cavity cover, a connecting structure for connecting with the control body cover is provided at one end of the terminal wiring cavity cover away from the end rod, and the control body cover is provided with a connecting column for connecting with the terminal wiring cavity cover.

[0008] By adopting the above scheme, the control box cover of the valve control device is divided into two parts, namely the control body cover and the terminal wiring chamber cover, and the two parts are formed separately. Then, the control body cover and the terminal wiring chamber cover are fixedly connected by a connecting structure, which greatly reduces the molding difficulty of the control box cover of the valve control device, reduces the production cost of the control box cover of the valve control device, and speeds up the production efficiency of the control box cover of the valve control device, thereby making the production of the control box cover of the valve control device more convenient.

[0009] Optionally, the connection structure includes a connecting sleeve, which is fixedly connected to the end of the terminal wiring cavity sleeve away from the end cover, and a plurality of first threaded holes are opened at the end of the connecting column away from the control main body sleeve. A first screw is rotatably connected to the connecting sleeve at a position opposite to the first threaded hole, and the first screw is threadedly connected in the first threaded hole.

[0010] By adopting the above technical solution, when the control box cover part of the valve control device is assembled, the first screw is screwed into the first threaded hole, so that the connecting sleeve and the connecting column are fixedly connected, and then the terminal wiring chamber part and the control body part are fixedly connected, thereby completing the combined installation of the control box cover part of the valve control device.

[0011] Optionally, the first threaded holes are distributed in a circular array, and the distance between every two adjacent first threaded holes is equal.

[0012] By adopting the above technical scheme, the terminal wiring cavity sleeve can be rotated so that the first screw can be completely screwed into the first screw hole, thereby changing the direction of the wiring tube and the direction of the outlet line, so that the control box cover sleeve can be placed stably in a narrow space by changing the outlet line direction, so that the control box cover sleeve of the valve control device can be applied to more situations.

[0013] Optionally, a plurality of second threaded holes are provided on one end surface of the terminal wiring cavity sleeve connecting end cover, and a second screw is rotatably connected to the end cover facing the second threaded hole, and the second screw is threadedly connected in the second threaded hole.

[0014] By adopting the above technical solution, the end cover can be firmly connected to the terminal wiring cavity sleeve. At the same time, when it is necessary to check the line of the electric control valve, the end cover can be removed to facilitate the operator to check the line.

[0015] Optionally, the connecting column is arranged above the control body sleeve.

[0016] By adopting the above technical solution, the terminal wiring cavity sleeve is located above the control body sleeve, and the wiring direction is toward the side of the control box cover sleeve of the valve control device, so that the wiring direction is facing the operator, thereby making it more convenient for the operator to conduct wiring and reducing the space requirements of the electric control valve.

[0017] Optionally, a thread is provided on the inner side of one end of the wiring tube facing away from the terminal wiring cavity sleeve, the wiring tube is threadedly connected to a clamping nut, a through hole along the axis of the clamping nut is opened in the center of the clamping nut, a limiting ring is extended inwardly from the inner side of one end of the wiring tube close to the terminal wiring cavity sleeve, a rubber ring is provided in the wiring tube, one end of the rubber ring is in contact with the limiting ring, and the other end of the rubber ring is in contact with the clamping nut.

[0018] By adopting the above technical solution, when wiring, the clamping nut is unscrewed, and then the cable is inserted into the terminal wiring cavity sleeve through the wiring tube. The outer side of the cable is provided with an outer shell with an external thread at the end. The cable shell is screwed into the wiring tube through the thread, so that the rubber ring is compressed inwardly, and the rubber ring clamps the cable, which plays a role in effectively sealing and preventing the cable from being pulled out.

[0019] Optionally, a rubber gasket is provided between the rubber ring and the clamping nut.

[0020] By adopting the above technical solution, the friction between the rubber ring and the clamping nut is reduced, the service life of the rubber ring is increased, and the sealing performance of the control box cover is increased.

[0021] Optionally, the wiring tubes are connected with blocking screws. When the number of wiring tubes is greater than the number of wires required to be connected to an external power source, the blocking screws are threadedly connected to the excess wiring tubes via screws.

[0022] By adopting the above technical solution, when the number of wires to be connected is less than the number of wiring tubes, the concentric screws in the excess wiring tubes are unscrewed and the sealing screws are screwed in, thereby sealing the excess wiring tubes and ensuring the sealing of the control box cover.

[0023] In summary, this application has the following technical effects:

[0024] 1. By dividing the control box cover of the valve control device into a control body cover and a terminal wiring chamber cover, and providing a connecting structure to connect the control body cover and the terminal wiring chamber cover, the molding of the control box cover of the valve control device is simplified, and the molding speed of the control box cover of the valve control device is accelerated, so that the production of the control box cover of the valve control device is more convenient;

[0025] 2. The end cover is fixedly connected to the terminal wiring cavity sleeve by providing a second screw and a second threaded hole, and the end cover can be opened when a line inspection is required, so that the operator can conveniently conduct line inspection;

[0026] 3. By arranging the connection column above the control main body sleeve, the wiring port is changed from downward to the side of the control box cover sleeve of the valve control device, so that the operator can more conveniently connect the lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this application;

[0028] Figure 2 This application intends to emphasize the partial structural exploded view of the connection between the control body sleeve and the terminal connection chamber sleeve;

[0029] Figure 3This application intends to emphasize the partial structural exploded view of the connection between the terminal wiring cavity sleeve and the end cover;

[0030] Figure 4 This application intends to emphasize the partial structural top view of the internal structure of the wiring tube.

[0031] In the figure, 1. control body sleeve; 11. connecting column; 111. first threaded hole; 112. annular groove; 2. terminal wiring cavity sleeve; 21. second threaded hole; 3. connecting sleeve; 31. first screw; 32. extension tube; 321. sealing ring; 4. end cover; 41. second screw; 5. wiring tube; 51. limiting ring; 52. rubber ring; 53. rubber gasket; 6. clamping nut; 7. sealing screw; 8. wire. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] Reference Figure 1 A control box cover of a valve control device includes a control body cover 1 and a terminal wiring cavity cover 2. A connecting column 11 is connected to the control body cover, and the connecting column 11 is communicated with the control body cover. The terminal wiring cavity cover 2 is provided with a connecting structure, and the connecting structure is connected to the connecting column 11. A plurality of wiring tubes 5 for the wires 8 to pass through are provided on the circumferential surface of the terminal wiring cavity cover 2, and the wiring tubes 5 communicate the inside of the terminal wiring cavity cover 2 with the outside of the terminal wiring cavity cover 2. When producing the control box cover of the valve control device, the control body cover 1 and the terminal wiring cavity cover 2 can be formed separately, and then the control body cover 1 and the terminal wiring cavity cover 2 can be connected through the connecting structure, thereby reducing the molding difficulty of the control box cover of the valve control device, and making the production of the control box cover of the valve control device more convenient.

[0034] Reference Figure 1 and Figure 2The connecting column 11 is arranged above the control main body sleeve 1, so that the terminal wiring cavity sleeve 2 is also located above the control main body sleeve 1 when connected to the control main body sleeve 1 through the connecting structure, so that the space requirement of the control box cover sleeve is reduced, so that the axis of the wiring tube 5 is in the horizontal plane, which makes it more convenient for operators to connect the wires 8. The connecting structure includes a connecting sleeve 3, and the connecting sleeve 3 is fixedly arranged at one end of the terminal wiring cavity sleeve 2. Four first threaded holes 111 are opened on the surface of the end of the connecting column 11 away from the control main body sleeve 1. The four first threaded holes 111 are evenly arranged in a circular array, and the distance between each adjacent two first threaded holes 111 is equal. The connecting sleeve 3 is rotatably connected with a first screw 31 facing the first threaded hole 111, and the first screw 31 is threadedly connected in the first threaded hole 111, so that the connecting sleeve 3 is fixedly connected to the connecting column 11, and then the control main body sleeve 1 is fixedly connected to the terminal wiring cavity sleeve 2. Since the distance between each two adjacent first threaded holes 111 is equal, the terminal wiring cavity sleeve 2 can be rotated ninety degrees or N times of ninety degrees. At this time, the first screw 31 can still be screwed into the first threaded hole 111, thereby adjusting the direction of the wiring tube 5, thereby adjusting the appearance direction of the wire 8, so as to adapt to more scenarios.

[0035] Reference Figure 1 and Figure 2 An extension tube 32 is fixedly connected to the side of the connection sleeve 3 away from the terminal wiring cavity sleeve 2. The outer diameter of the extension tube 32 is the same as the inner diameter of the connection column 11, so that the extension tube 32 can be inserted into the connection column 11, so that the connection between the control main body sleeve 1 and the terminal wiring cavity sleeve 2 is more tightly connected, and at the same time, the sealing of the connection between the control main body sleeve 1 and the terminal wiring cavity sleeve 2 is strengthened. An annular groove 112 is provided at one end of the connection column 11 connected to the extension tube 32, and a sealing ring 321 is provided at the connection between the connection sleeve 3 and the extension tube 32. When the control main body sleeve 1 is connected to the terminal wiring cavity sleeve 2, the sealing ring 321 is located in the annular groove 112, thereby further strengthening the sealing of the connection between the control main body sleeve 1 and the terminal wiring cavity sleeve 2.

[0036] Reference Figure 1 and Figure 3 An end cover 4 is connected to the side of the terminal wiring cavity sleeve 2 facing away from the connecting sleeve 3, and a plurality of second threaded holes 21 are opened at the end of the terminal wiring cavity sleeve 2 connected to the end cover 4. The end cover 4 is rotatably connected to the second threaded hole 21. The second screw 41 is threadedly connected to the second threaded hole 21, so that the terminal wiring cavity sleeve 2 is fixedly connected to the end cover 4. When it is necessary to inspect the wires 8 in the terminal wiring cavity sleeve 2, the second screw 41 can be unscrewed to remove the end cover 4, so that the operator can inspect the wires 8 inside the terminal wiring cavity sleeve 2.

[0037] Reference Figure 4A thread is provided on the inner surface of the end of the wiring tube 5 away from the terminal wiring cavity sleeve 2, and the wiring tube 5 is connected to a clamping nut 6 through a thread, and the clamping nut 6 prevents the internal parts of the wiring tube 5 from falling out when the wiring is not in progress. A limit ring 51 is fixedly connected to the inner side of the end of the wiring tube 5 close to the terminal wiring cavity sleeve 2, and a rubber ring 52 is arranged inside the terminal wiring cavity sleeve 2, one end of the rubber ring 52 is in contact with the limit ring 51, and the other end of the rubber ring 52 is connected to a rubber gasket 53, and the rubber gasket 53 is connected to the clamping nut 6. When wiring, the clamping nut 6 is unscrewed and the wire 8 is inserted. The terminal wiring cavity sleeve 2 is inserted between the limiting ring 51, the rubber ring 52 and the rubber gasket 53, and a cable housing is provided on the outside of the terminal wiring cavity sleeve 2 where the wire 8 is located. An external thread is provided at the end of the wire housing, and the wire housing is connected to the wiring tube 5 through the thread. The wire housing squeezes the rubber ring 52 to compress the rubber ring 52, thereby widening the rubber ring 52 in the radial direction, thereby clamping the wire 8, thereby sealing the wiring tube 5, and the rubber gasket 53 reduces the friction between the clamping nut 6 and the rubber ring 52, thereby increasing the service life of the rubber gasket 53.

[0038] 4, when the number of wiring tubes 5 is greater than the number of wiring required by the electric control valve control box, the clamping nut 6 in the extra wiring tube 5 is unscrewed, and a blocking screw 7 is set to be connected to the end of the wiring tube 5 away from the terminal wiring cavity sleeve 2 through a thread, so as to block the extra wiring tube 5 and ensure the sealing of the control box cover sleeve.

[0039] The specific implementation principle of the present application is: the control box cover of the valve control device is divided into two parts: the control body cover 1 and the terminal wiring cavity cover 2, and the control body cover 1 and the terminal wiring cavity cover 2 are formed separately, and then the first screw 31 is screwed into the first threaded hole 111 to fix the connecting sleeve 3 and the connecting column 11, thereby fixing the control body cover and the terminal wiring cavity cover 2. Compared with the existing method of integrally forming the control box cover of the valve control device, the control box cover of the present invention can reduce the difficulty of forming, thereby improving the forming efficiency, so that the forming of the control box cover of the valve control device is easier.

[0040] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A control box cover of a valve control device, characterized in that: The invention comprises a control main body sleeve (1) and a terminal wiring chamber sleeve (2), wherein a plurality of wiring tubes (5) are arranged on the circumferential surface of the terminal wiring chamber sleeve (2), wherein the wiring tubes (5) are connected to the inside of the terminal wiring chamber sleeve (2) and the outside of the terminal wiring chamber sleeve (2), wherein an end cover (4) is arranged at one end of the terminal wiring chamber sleeve (2), and a connection structure for connecting with the control main body sleeve (1) is arranged at the end of the terminal wiring chamber sleeve (2) away from the end rod, and the control main body sleeve (1) is provided with a connection column (11) for connecting with the terminal wiring chamber sleeve (2).

2. A control box cover of a valve control device according to claim 1, characterized in that: The connection structure comprises a connection sleeve (3), the connection sleeve (3) being fixedly connected to the end of the terminal wiring cavity sleeve (2) away from the end cover (4), a plurality of first threaded holes (111) being provided at the end of the connection column (11) away from the control main body sleeve (1), a first screw (31) being rotatably connected at a position of the connection sleeve (3) facing the first threaded hole (111), and the first screw (31) being threadedly connected in the first threaded hole (111).

3. A control box cover of a valve control device according to claim 2, characterized in that: The first threaded holes (111) are distributed in a circular array, and the distance between every two adjacent first threaded holes (111) is equal.

4. A control box cover of a valve control device according to claim 1, characterized in that: The terminal connection cavity sleeve (2) is provided with a plurality of second threaded holes (21) on one end surface of the connection end cover (4), and the end cover (4) is rotatably connected with a second screw (41) at a position opposite to the second threaded hole (21), and the second screw (41) is threadedly connected in the second threaded hole (21).

5. The control box cover of a valve control device according to claim 1, characterized in that: The connecting column (11) is arranged above the control main body sleeve (1).

6. A control box cover of a valve control device according to claim 1, characterized in that: The inner side of the end of the wiring tube (5) facing away from the terminal wiring cavity sleeve (2) is provided with a thread, the wiring tube (5) is threadedly connected with a clamping nut (6), a through hole is opened in the center of the clamping nut (6) along the axis direction of the clamping nut (6), a limiting ring (51) extends inwardly from the inner side of the end of the wiring tube (5) close to the terminal wiring cavity sleeve (2), a rubber ring (52) is provided in the wiring tube (5), one end of the rubber ring (52) contacts the limiting ring (51), and the other end of the rubber ring (52) contacts the clamping nut (6).

7. A control box cover of a valve control device according to claim 6, characterized in that: A rubber gasket (53) is provided between the rubber ring (52) and the pressing nut (6).

8. The control box cover of a valve control device according to claim 6, characterized in that: The wiring tube (5) is connected with a blocking screw (7). When the number of the wiring tubes (5) is greater than the number of wires (8) required to be connected to an external power source, the blocking screw (7) is threadedly connected to the excess wiring tubes (5) via a screw.

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