Integrated constant air volume pressure difference controller

Abstract

The utility model discloses an integrated constant air volume pressure difference controller, including body mechanism and setting in body mechanism one side, through the way of clamping the communication cable close to the wiring terminal, reduce the cable body swing amplitude, guarantee the location mechanism of close degree of connection, the location mechanism includes the screw rod of screwing on the one side symmetry of casing and set, complete the clamping limit of cable body, finally will each compression ring respectively wear into the outside of limit rod bottom end, rotate compression ring and make it rise to push gasket fully extrude screw rod bottom's position, after fixing the height of each limit rod, clamping installation back seal plate, in the long time's use process, when communication cable shakes under external force, because the part of cable body close to the wiring terminal is pressed and clamped, its shaking degree will reduce greatly, thereby effectively reduce the situation that the communication cable is loose at the wiring terminal connection place due to the cable body shaking, guarantee the stability of communication.

Description

Technical Field

[0001] This utility model belongs to the field of air volume and differential pressure control technology, specifically relating to an integrated constant air volume and differential pressure controller. Background Technology

[0002] An integrated constant air volume differential pressure controller is an intelligent control system primarily used in scenarios requiring precise adjustment of air volume and differential pressure, such as ventilation systems, clean rooms, laboratories, or industrial environments. By integrating sensors, actuators, and control logic, it ensures stable operation of the system within the set parameter range and is widely used in construction, industry, and laboratories.

[0003] Existing integrated constant air volume differential pressure controllers require connection to multiple communication cables during use to transmit and receive signals for constant air volume differential pressure control. However, after the communication cables are connected to the device, the portion of the cable near the terminal is suspended in the air and is prone to shaking when subjected to external forces. As the usage time increases, the frequent shaking can easily cause the communication cables to loosen from the connection terminals, resulting in fluctuations in the initial signal, which is quite inconvenient. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide an integrated constant air volume differential pressure controller. This addresses the issue mentioned in the background art where existing partially integrated constant air volume differential pressure controllers require connection to multiple communication cables for signal transmission and reception during use. Furthermore, after the communication cables are connected to the device, the portion of the cable near the terminals is suspended and prone to swaying under external forces. With prolonged use, this frequent swaying can easily cause loosening between the communication cables and the terminals, resulting in signal fluctuations and significant inconvenience.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated constant air volume differential pressure controller, comprising a main body and a limiting mechanism disposed on one side of the main body, which reduces the swaying amplitude of the communication cable and ensures the tightness of the connection by clamping the communication cable near the terminal block. The limiting mechanism includes screws threadedly connected to one side of the housing and symmetrically arranged, with foot pads threadedly connected to the outer side of the screws. A frame is fixedly connected to one side of the foot pads. Several brackets are symmetrically arranged on the top side of the frame. A limiting rod is movably connected to the inner side of the frame through several symmetrically arranged through holes. A pressure ring is threadedly connected to the outer side of the bottom end of the limiting rod. Several pressure rings are symmetrically arranged. A first sealing plate is clamped and connected to the top of the frame. An inner plate is fixedly connected to the inner side of the first sealing plate.

[0006] Preferably, a controller is fixedly connected to the inner side of the housing, a terminal block is fixedly connected to one side of the housing, and several terminal blocks are symmetrically arranged. A second sealing plate is fixedly connected to the top of the housing, and a display, an indicator light, and a control panel are fixedly connected to the inner side of the second sealing plate. The terminal block, the display, the indicator light, and the control panel are all electrically connected to the controller.

[0007] Preferably, the inner sheet is made of transparent acrylic material, and a sealing plate is fixedly connected to the outer side of the inner sheet.

[0008] Preferably, the through hole has a U-shaped structure, and a limit rod is movably connected to the inside of the through hole.

[0009] Preferably, a gasket is movably connected to the outer side of one end of the limiting rod, and several gaskets are symmetrically arranged, with the gaskets located between the pressure ring and the screw.

[0010] Preferably, a pinch pad is fixedly connected to the outside of the pressure ring. The pinch pad is made of flexible material, and several grooves are symmetrically arranged on the outer surface of the pinch pad.

[0011] Preferably, a buffer pad is fixedly connected to the top of the bracket, both the bracket and the buffer pad are arc-shaped structures, and a screw is fixedly connected to the bottom of the bracket.

[0012] Preferably, the bracket and the buffer pad are symmetrically provided with a number of heat dissipation holes on their inner sides, and the heat dissipation holes penetrate the inner wall of the bracket and the buffer pad.

[0013] Compared with the prior art, this utility model provides an integrated constant air volume differential pressure controller, which has the following beneficial effects:

[0014] 1. This utility model uses limiting rods to lift the sealing plate, disengaging its bottom from the top of the frame and exposing the top of the bracket to the external environment. The frame is then connected to the housing via feet and screws. Several sets of communication cables are connected to the terminals as needed. The cable body near the terminals is then placed flat inside the buffer pad on top of the bracket. Each limiting rod is inserted into the through hole, ensuring the bottom of the inner side of the limiting rod fully contacts the top of the cable body. Combined with the support of the central bracket, this completes the process for cable... The clamping limit is set, and finally each pressure ring is inserted into the outer side of the bottom end of the limit rod. The pressure ring is rotated to rise to the position where the push pad fully squeezes the bottom of the screw. After fixing the height of each limit rod, the locking and sealing plate is installed. During long-term use, when the communication cable is shaken by external force, the degree of shaking will be greatly reduced because the part of the cable body near the terminal is pressed and clamped. This effectively reduces the occurrence of loosening of the communication cable at the terminal connection due to the shaking of the cable body, and ensures the stability of communication.

[0015] 2. By setting a pinch pad, this utility model can ensure the comfort of the person holding it, while increasing the friction and reducing the risk of accidental slippage.

[0016] 3. By setting heat dissipation holes, this utility model can effectively dissipate the heat generated by communication cables during long-term use.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the isometric structure of an integrated constant air volume differential pressure controller proposed in this utility model;

[0020] Figure 2 This is an exploded view of the integrated constant air volume differential pressure controller proposed in this utility model.

[0021] Figure 3 This is an exploded view of the limiting mechanism of an integrated constant air volume differential pressure controller proposed in this utility model.

[0022] Figure 4 This is an isometric structural diagram of the limit rod of an integrated constant air volume differential pressure controller proposed in this utility model;

[0023] In the diagram: main body mechanism 1, housing 101, controller 102, wiring terminal 103, second sealing plate 104, display 105, indicator light 106, control panel 107, limit mechanism 2, screw 201, foot pad 202, frame 203, bracket 204, through hole 205, limit rod 206, pressure ring 207, first sealing plate 208, inner sheet 209, gasket 3, pinch pad 4, buffer pad 5, heat dissipation hole 6. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4This utility model provides a technical solution: an integrated constant air volume differential pressure controller, including a main body 1 and a limiting mechanism 2 disposed on one side of the main body 1. This limiting mechanism reduces cable sway and ensures connection tightness by clamping the communication cable near the terminal block. The limiting mechanism 2 includes screws 201 threadedly connected to one side of the housing 101 and symmetrically arranged. Foot pads 202 are threadedly connected to the outer side of the screws 201. A frame 203 is fixedly connected to one side of the foot pads 202. Symmetrical arrangements are located on the top side of the frame 203. There are several brackets 204. A limiting rod 206 is movably connected to the inner side of the frame 203 through several symmetrically arranged through holes 205. A pressure ring 207 is threaded to the outer side of the bottom end of the limiting rod 206. Several pressure rings 207 are symmetrically arranged. A first sealing plate 208 is engaged and connected to the top of the frame 203. An inner piece 209 is fixedly connected to the inner side of the first sealing plate 208. Lifting the first sealing plate 208 disengages its bottom from the top of the frame 203, exposing the top of the bracket 204 to the external environment. Then, the frame 204 is... 03. Connect the cable to the housing 101 via the foot pads 202 and screws 201. As needed, connect several sets of communication cables to the terminals 103. Then, place the cable body near the terminals 103 flat inside the buffer pad 5 on top of the bracket 204. Insert each limiting rod 206 into the through hole 205, ensuring the bottom of the inner side of the limiting rod 206 fully contacts the top of the cable body. Combined with the support of the middle bracket 204, this completes the clamping and limiting of the cable body. Finally, insert each pressure ring 207 into the limiting... On the outer side of the bottom end of rod 206, rotate pressure ring 207 to raise it to the position where push pad 3 fully squeezes the bottom of screw 201. After fixing the height of each limit rod 206, snap it back into place and install the first sealing plate 208. During long-term use, when the communication cable is shaken by external force, the degree of shaking will be greatly reduced because the part of the cable body near the terminal 103 is pressed and clamped. This effectively reduces the occurrence of loosening of the communication cable at the terminal 103 due to the shaking of the cable body, thus ensuring the stability of communication.

[0026] In this utility model, preferably, a controller 102 is fixedly connected to the inner side of the housing 101, and a terminal block 103 is fixedly connected to one side of the housing 101. Several terminal blocks 103 are symmetrically arranged. A second sealing plate 104 is fixedly connected to the top of the housing 101. A display 105, an indicator light 106, and a control panel 107 are fixedly connected to the inner side of the second sealing plate 104. The terminal blocks 103, the display 105, the indicator light 106, and the control panel 107 are all electrically connected to the controller 102. After the housing 101 is installed at a predetermined location, multiple sets of communication cables are connected to the terminal blocks 103. Then, the required values ​​are set through the control panel 107 in conjunction with the display 105, and processed by the controller 102.

[0027] In this utility model, preferably, the inner sheet 209 is made of transparent acrylic material, and a first sealing plate 208 is fixedly connected to the outer side of the inner sheet 209, which can effectively facilitate personnel to observe the wiring status.

[0028] In this utility model, preferably, the through hole 205 has a U-shaped structure, and the inner side of the through hole 205 is movably connected to the limiting rod 206, which can finely adjust the horizontal position of each limiting rod 206 according to actual needs.

[0029] In this utility model, preferably, a washer 3 is movably connected to the outer side of one end of the limiting rod 206. Several washer 3s are symmetrically arranged. The washer 3 is located between the pressure ring 207 and the screw 201, which can effectively reduce the loosening range generated during long-term use after the pressure ring 207 and the limiting rod 206 are threadedly connected.

[0030] In this utility model, preferably, a pinch pad 4 is fixedly connected to the outside of the pressure ring 207. The pinch pad 4 is made of flexible material, and several grooves are symmetrically arranged on the outer surface of the pinch pad 4, which can ensure the comfort of the person after pinching, while increasing the friction and reducing the risk of accidental slippage.

[0031] In this utility model, preferably, a buffer pad 5 is fixedly connected to the top of the bracket 204, both the bracket 204 and the buffer pad 5 are arc-shaped structures, and a screw 201 is fixedly connected to the bottom of the bracket 204, which can ensure the fit between the structure and the cable.

[0032] In this utility model, preferably, a plurality of heat dissipation holes 6 are symmetrically arranged on the inner side of both the bracket 204 and the buffer pad 5. The heat dissipation holes 6 penetrate through the inner wall of the bracket 204 and the buffer pad 5, which can effectively dissipate the heat generated by the communication cable during long-term use.

[0033] The working principle and usage process of this utility model are as follows: In use, lift the first sealing plate 208 to disengage its bottom from the top of the frame 203, exposing the top of the bracket 204 to the external environment. Then, connect the frame 203 to the housing 101 via the foot pads 202 and screws 201. As needed, connect several sets of communication cables to the terminals 103. Then, place the cable body near the terminals 103 flat inside the buffer pad 5 on top of the bracket 204. Insert each limiting rod 206 into the through hole 205, ensuring that the bottom of the inner side of the limiting rod 206 fully contacts the top of the cable body, cooperating with the middle bracket 204 to... The cable body is supported, and the clamping and limiting of the cable body are completed. Finally, each pressure ring 207 is inserted into the outer side of the bottom end of the limiting rod 206. The pressure ring 207 is rotated to raise it to the position where the pushing pad 3 fully squeezes the bottom of the screw 201. After fixing the height of each limiting rod 206, the first sealing plate 208 is snapped back into place. During long-term use, when the communication cable is shaken by external force, the degree of shaking will be greatly reduced because the part of the cable body near the terminal 103 is pressed and clamped. This effectively reduces the possibility of the communication cable becoming loose at the connection point of the terminal 103 due to the shaking of the cable body, thus ensuring the stability of communication.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated constant air volume differential pressure controller, characterized in that: The device includes a main body (1) and a limiting mechanism (2) located on one side of the main body (1) to reduce the swaying amplitude of the cable body and ensure the tightness of the connection by clamping the communication cable close to the terminal block. The limiting mechanism (2) includes a screw (201) threadedly connected to one side of the housing (101) and symmetrically arranged. A foot pad (202) is threadedly connected to the outside of the screw (201). A frame (203) is fixedly connected to one side of the foot pad (202). Several brackets (204) are symmetrically arranged on one side of the top of the frame (203). A limiting rod (206) is movably connected to the inside of the frame (203) through several symmetrically arranged through holes (205). A pressure ring (207) is threadedly connected to the outside of the bottom end of the limiting rod (206). Several pressure rings (207) are symmetrically arranged. A first sealing plate (208) is clamped and connected to the top of the frame (203). An inner plate (209) is fixedly connected to the inside of the first sealing plate (208).

2. The integrated constant air volume differential pressure controller according to claim 1, characterized in that: A controller (102) is fixedly connected to the inside of the housing (101). A terminal block (103) is fixedly connected to one side of the housing (101). Several terminal blocks (103) are symmetrically arranged. A second sealing plate (104) is fixedly connected to the top of the housing (101). A display (105), an indicator light (106), and a control panel (107) are fixedly connected to the inside of the second sealing plate (104). The terminal block (103), display (105), indicator light (106), and control panel (107) are all electrically connected to the controller (102).

3. The integrated constant air volume differential pressure controller according to claim 1, characterized in that: The inner sheet (209) is made of transparent acrylic material, and a first sealing plate (208) is fixedly connected to the outside of the inner sheet (209).

4. The integrated constant air volume differential pressure controller according to claim 1, characterized in that: The through hole (205) has a U-shaped structure, and a limit rod (206) is movably connected to the inside of the through hole (205).

5. An integrated constant air volume differential pressure controller according to claim 1, characterized in that: A gasket (3) is movably connected to the outer side of one end of the limiting rod (206). Several gaskets (3) are symmetrically arranged and are located between the pressure ring (207) and the screw (201).

6. An integrated constant air volume differential pressure controller according to claim 1, characterized in that: A pinch pad (4) is fixedly connected to the outside of the pressure ring (207). The pinch pad (4) is made of flexible material and has several grooves symmetrically arranged on its outer surface.

7. An integrated constant air volume differential pressure controller according to claim 1, characterized in that: The bracket (204) is fixedly connected to the top of a buffer pad (5). Both the bracket (204) and the buffer pad (5) are arc-shaped structures. The bracket (204) is fixedly connected to the bottom of a screw (201).

8. An integrated constant air volume differential pressure controller according to claim 7, characterized in that: The bracket (204) and the buffer pad (5) are symmetrically provided with a number of heat dissipation holes (6) on their inner sides, and the heat dissipation holes (6) penetrate through the inner walls of the bracket (204) and the buffer pad (5).

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