Throttle valve with controllable air tightness

Abstract

The utility model discloses a throttle valve with controllable air tightness, which relates to the technical field of throttle valves and comprises a valve casing and a valve clack. A valve cavity is formed in the valve shell, connecting pipes are fixed to the left side face and the right side face of the valve shell correspondingly, a containing groove is formed in the top face of the valve shell, the containing groove and the valve plate are installed correspondingly, a through hole in the middle of the valve plate is rotationally connected with a lead screw, a coupler is fixed to the top end of the lead screw, and a screw hole in the middle of the valve clack is in threaded connection with the lead screw. A buffering unit is arranged on the front side face of the valve shell, and a fixing unit is arranged on the top face of the valve shell. The throttling valve with the controllable air tightness further comprises a controller, the controller is arranged on the front side face of the valve shell, according to the throttling valve with the controllable air tightness, the buffering plate is adopted for buffering impact force of conveyed liquid, the filtering box is matched for filtering large impurities, and meanwhile the sealing sleeve on the outer side of the valve clack is matched for effectively controlling the air tightness of the throttling valve; and the disassembly is convenient, and the subsequent replacement and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle valves, in particular to a throttle valve with controllable air tightness. Background Art

[0002] A throttle valve is a valve that controls the flow of fluid by changing the throttle section or throttle length. A throttle valve and a one-way valve can be connected in parallel to form a one-way throttle valve. Throttle valves and one-way throttle valves are simple flow control valves. In the hydraulic system of a quantitative pump, the throttle valve and the overflow valve can be combined to form three throttle speed control systems, namely the oil inlet throttle speed control system, the oil return throttle speed control system and the bypass throttle speed control system. However, traditional throttle valves are easily impacted and corroded by the conveyed liquid during use, which can easily lead to air tightness problems. When the air tightness is poor, leakage is prone to occur. At the same time, since most throttle valves are inconvenient to disassemble, subsequent maintenance is very inconvenient. For this reason, we propose a throttle valve with controllable air tightness. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a throttle valve with controllable air tightness. The buffer plate can buffer the impact force of the conveyed liquid, and the filter box can filter larger impurities. At the same time, the sealing sleeve on the outside of the valve disc can effectively control the air tightness of the throttle valve. It is easy to disassemble and facilitate subsequent replacement and maintenance, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a throttle valve with controllable air tightness, comprising a valve housing and a valve disc;

[0005] Valve housing: A valve cavity is provided inside, connecting pipes are fixed to the left and right sides of the valve housing, a placement groove is provided on the top surface of the valve housing, the placement groove is installed corresponding to the valve plate, the through hole in the middle of the valve plate is rotatably connected to the lead screw, the top of the lead screw is fixed with a coupling, the screw hole in the middle of the valve disc is threadedly connected to the lead screw, a buffer unit is provided on the front side of the valve housing, and a fixing unit is provided on the top surface of the valve housing;

[0006] Wherein, it also includes a controller, which is arranged on the front side of the valve housing, and the input end of the controller is electrically connected to the output end of the external power supply.

[0007] The height of the valve disc is adjusted by rotating the lead screw, so that it can be adjusted to the throttling section or throttling length of the valve cavity, thereby achieving control of the fluid flow.

[0008] Furthermore, the buffer unit includes a filter box, a buffer plate, a fixing plate, a bolt and a groove. The groove is opened on the front side of the valve housing. The filter box is slidably installed inside the groove. The buffer plate is installed inside the filter box. The front side end of the filter box is fixed with a fixing plate. The screw holes on the surface of the fixing plate are threadedly connected with the bolts. The bolts are turned to install the filter box into the inside of the groove. The buffer plate can buffer the liquid to prevent the valve disc from being damaged by the impact of the liquid, thereby improving the air tightness and service life of the throttle valve.

[0009] Furthermore, the fixing unit includes a locking hole, an adjusting groove, a locking frame, a screw and a rotating wheel. There are two adjusting grooves and they are respectively opened on both sides of the top surface of the valve shell. The internal rotation of the adjusting groove is connected to the screw, and the outer end of the screw is installed with a rotating wheel. The screw is threadedly connected to the screw hole in the middle of the locking frame. The locking hole is opened on the side of the valve plate. The rotating wheel is rotated to rotate the screw, so that the locking frame and the locking hole are plugged in and matched to facilitate the disassembly and assembly of the valve plate, which is convenient for personnel to repair and replace damaged parts later.

[0010] Furthermore, the buffer unit also includes a sealing ring and a sealing tube. The sealing ring is fixed on the rear side of the fixed plate, and the sealing tube is installed inside the connecting tube. The provided sealing tube can increase the sealing performance of the connection between the connecting tube and the external tube body, while the sealing ring can prevent liquid leakage.

[0011] Furthermore, it also includes a bracket, a motor and a flow sensor. The bracket is fixed on the top surface of the valve plate. The motor is fixed on the top surface of the bracket. The output shaft of the motor is correspondingly plugged into the top end of the coupling. The flow sensor is correspondingly connected to the connecting pipe. The input end of the motor is electrically connected to the output end of the controller. The output end of the flow sensor is electrically connected to the input end of the controller. The flow sensor can detect the flow rate of the liquid and start the motor to automatically adjust the height of the valve disc.

[0012] Furthermore, it also includes a sealing gasket and a sealing sleeve, wherein the sealing gasket is bonded to the top surface of the placement groove, and the sealing sleeve is sleeved on the outer side of the valve disc, and the sealing sleeve can increase the sealing performance of the contact position between the valve cavity and the valve disc.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the throttle valve with controllable air tightness has the following advantages:

[0014] 1. Install the filter box into the groove by turning the bolts. The buffer plate can buffer the liquid to prevent the valve disc from being damaged by the impact of the liquid, which can improve the air tightness and service life of the throttle valve.

[0015] 2. By turning the wheel to rotate the screw, the locking frame and the locking hole are plugged into each other to facilitate the disassembly and assembly of the valve plate, which makes it easier for personnel to repair and replace damaged parts later.

[0016] 3. The sealing tube can increase the sealing performance of the connection between the connecting tube and the external tube body, while the sealing ring can prevent leakage, and the sealing sleeve can increase the sealing performance of the contact position between the valve cavity and the valve disc, so as to improve the overall air tightness of the throttle valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the fixed unit of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the buffer unit of the utility model.

[0020] In the figure: 1 valve housing, 2 buffer unit, 21 filter box, 22 buffer plate, 23 fixing plate, 24 bolt, 25 groove, 26 sealing ring, 27 sealing tube, 3 fixing unit, 31 locking hole, 32 adjusting groove, 33 locking frame, 34 screw, 35 runner, 4 connecting pipe, 5 valve chamber, 6 placement groove, 7 valve plate, 8 coupling, 9 screw, 10 valve disc, 11 bracket, 12 motor, 13 flow sensor, 14 sealing gasket, 15 sealing sleeve, 16 controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3 , this embodiment provides a technical solution: a throttle valve with controllable air tightness, comprising a valve housing 1 and a valve disc 10;

[0023] The valve shell 1 is internally provided with a valve cavity 5, both sides of the valve shell 1 are fixedly provided with connecting pipes 4, the top surface of the valve shell 1 is provided with a placing groove 6, the placing groove 6 is correspondingly installed with a valve plate 7, the through hole in the middle of the valve plate 7 is rotationally connected with a lead screw 9, the top end of the lead screw is fixedly provided with a coupling 8, the screw hole in the middle of a valve clack 10 is threadedly connected with the lead screw 9, the front side of the valve shell 1 is provided with a buffer unit 2, the buffer unit 2 comprises a filter box 21, a buffer plate 22, a fixed plate 23, a bolt 24 and a groove 25, the groove 25 is provided on the front side of the valve shell 1, the filter box 21 is slidably installed in the groove 25, the buffer plate 22 is installed in the filter box 21, the front side of the filter box 21 is fixedly provided with the fixed plate 23, the screw hole in the surface of the fixed plate 23 is threadedly connected with the bolt 24, the filter box 21 is installed in the groove 25 by rotating the bolt 24, the buffer plate 22 can buffer the liquid to prevent the liquid from impacting the valve clack 10, so that the air tightness and service life of the throttle valve can be improved, the buffer unit 2 further comprises a sealing ring 26 and a sealing pipe 27, the sealing ring 26 is fixedly arranged on the rear side of the fixed plate 23, the sealing pipe 27 is installed in the connecting pipe 4, the sealing pipe 27 can increase the sealing performance of the connecting pipe 4 and the external pipe body, and the sealing ring 26 can prevent the liquid leakage, the top surface of the valve shell 1 is provided with a fixing unit 3, the fixing unit 3 comprises a locking hole 31, an adjusting groove 32, a locking frame 33, a screw rod 34 and a rotating wheel 35, the adjusting groove 32 is provided on both sides of the top surface of the valve shell 1, the screw rod 34 is rotationally connected in the adjusting groove 32, the rotating wheel 35 is installed on the outer side of the screw rod 34, the screw rod 34 is threadedly connected with the screw hole in the middle of the locking frame 33, the locking hole 31 is provided on the side of the valve plate 7, the screw rod 34 is rotated by rotating the rotating wheel 35, so that the locking frame 33 is inserted and matched with the locking hole 31, and the valve plate 7 is conveniently disassembled and assembled, so that the damaged parts can be conveniently maintained and replaced by the personnel;

[0024] The controller 16 is arranged on the front side of the valve shell 1, the input end of the controller 16 is electrically connected with the output end of the external power supply, the height of the valve clack 10 is adjusted by rotating the lead screw 9, so that the valve clack 10 is adjusted with the throttle section or the throttle length of the valve cavity 5, so that the fluid flow is controlled, the bracket 11, the motor 12 and the flow sensor 13 are further arranged, the bracket 11 is fixedly arranged on the top surface of the valve plate 7, the motor 12 is fixedly arranged on the top surface of the bracket 11, the output shaft of the motor 12 is correspondingly inserted with the top end of the coupling 8, the flow sensor 13 is correspondingly connected with the connecting pipe 4, the input end of the motor 12 is electrically connected with the output end of the controller 16, the output end of the flow sensor 13 is electrically connected with the input end of the controller 16, the flow sensor 13 can detect the flow rate of the liquid, the height of the valve clack 10 is automatically adjusted by starting the motor 12, the sealing gasket 14 and the sealing sleeve 15 are further arranged, the sealing gasket 14 is bonded on the top surface of the placing groove 6, the sealing sleeve 15 is sleeved on the outer side of the valve clack 10, the sealing sleeve 15 can increase the sealing performance of the contact position between the valve cavity 5 and the valve clack 10.

[0025] The working principle of the controllable airtight throttle valve provided by the present invention is as follows: first, the external water pipe is inserted into the interior of the connecting pipe 4, and the bolt 24 is rotated to install the filter box 21 into the interior of the groove 25. The buffer plate 22 provided can buffer the liquid to prevent the impact of the liquid from causing damage to the valve disc 10, thereby improving the airtightness and service life of the throttle valve. The sealing tube 27 provided can increase the sealing of the connection between the connecting pipe 4 and the external pipe body, and the sealing ring 26 can prevent the problem of liquid leakage. Then the flow sensor 13 can detect the flow rate of the liquid, start the motor 12 to rotate the screw 9 to adjust the height of the valve disc 10, so that it can adjust the throttling section or throttling length with the valve chamber 5, thereby realizing the control of the fluid flow rate. The sealing sleeve 15 on the outside of the valve disc 10 can increase the sealing of the contact position with the valve disc 10. Finally, the wheel 35 is rotated to rotate the screw 34, so that the locking frame 33 and the locking hole 31 are plugged in and matched to facilitate the disassembly and assembly of the valve plate 7, which is convenient for personnel to repair and replace damaged parts later.

[0026] It is worth noting that the controller 16 disclosed in the above embodiment uses the model S7-200. The motor 12 can be freely configured according to the actual application scenario. The recommended model is the RS-550S motor. The flow sensor 13 can be a DN20-1 flow sensor. The controller 16 controls the operation of the motor 12 and the flow sensor 13 using methods commonly used in the prior art.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A throttle valve with controllable air tightness, characterized by: It comprises a valve housing (1) and a valve disc (10); Valve housing (1): a valve cavity (5) is provided inside, connecting pipes (4) are fixed to the left and right sides of the valve housing (1), a placement groove (6) is provided on the top surface of the valve housing (1), the placement groove (6) is installed corresponding to the valve plate (7), a through hole in the middle of the valve plate (7) is rotatably connected to the lead screw (9), a coupling (8) is fixed to the top end of the lead screw, a screw hole in the middle of the valve disc (10) is threadedly connected to the lead screw (9), a buffer unit (2) is provided on the front side of the valve housing (1), and a fixing unit (3) is provided on the top surface of the valve housing (1); The valve housing (1) further comprises a controller (16), which is arranged on the front side of the valve housing (1), and an input end of the controller (16) is electrically connected to an output end of an external power supply.

2. The throttle valve with controllable airtightness according to claim 1, characterized in that: The buffer unit (2) comprises a filter box (21), a buffer plate (22), a fixing plate (23), a bolt (24) and a groove (25); the groove (25) is provided on the front side of the valve housing (1); the filter box (21) is slidably mounted inside the groove (25); the buffer plate (22) is mounted inside the filter box (21); the fixing plate (23) is fixed to the front side end of the filter box (21); and the screw hole on the surface of the fixing plate (23) is threadedly connected to the bolt (24).

3. The throttle valve with controllable airtightness according to claim 1, characterized in that: The fixing unit (3) comprises a locking hole (31), an adjusting groove (32), a locking frame (33), a screw (34) and a rotating wheel (35). There are two adjusting grooves (32) and they are respectively opened on both sides of the top surface of the valve housing (1). The interior of the adjusting groove (32) is rotatably connected with a screw (34). The outer end of the screw (34) is installed with a rotating wheel (35). The screw (34) is threadedly connected to the screw hole in the middle of the locking frame (33). The locking hole (31) is opened on the side of the valve plate (7).

4. The throttle valve with controllable airtightness according to claim 2, characterized in that: The buffer unit (2) further comprises a sealing ring (26) and a sealing tube (27), wherein the sealing ring (26) is fixed on the rear side of the fixing plate (23), and the sealing tube (27) is installed inside the connecting tube (4).

5. The throttle valve with controllable air tightness according to claim 1, characterized in that: The invention also includes a bracket (11), a motor (12) and a flow sensor (13), wherein the bracket (11) is fixed on the top surface of the valve plate (7), the motor (12) is fixed on the top surface of the bracket (11), the output shaft of the motor (12) is correspondingly plugged into the top end of the coupling (8), the flow sensor (13) is correspondingly connected to the connecting pipe (4), the input end of the motor (12) is electrically connected to the output end of the controller (16), and the output end of the flow sensor (13) is electrically connected to the input end of the controller (16).

6. The throttle valve with controllable airtightness according to claim 1, characterized in that: It also includes a sealing gasket (14) and a sealing sleeve (15), wherein the sealing gasket (14) is bonded to the top surface of the placement groove (6), and the sealing sleeve (15) is sleeved on the outer side of the valve flap (10).

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