Valve structure for sewage plant

Abstract

The utility model discloses a valve structure for a sewage plant, which comprises an actuating mechanism and a control valve, the actuating mechanism is connected with the control valve through a flange, and the actuating mechanism comprises a shell a, a shell b and a support; the shell b is assembled at the upper end of the support, the shell a is assembled at the upper end of the shell b, and the shell a and the shell b are oppositely arranged; a fixed seat and an elastic film are mounted in the shell a and the shell b; an auxiliary film is assembled at the upper end of the fixed seat and above the elastic film; a compression spring is assembled at the upper end of the fixed seat, and an auxiliary spring is assembled in the compression spring; the pneumatic control valve is simple in structure and convenient to operate, the sensor is fixedly installed in the shell, the pressure value in the shell is detected through the sensor, when the elastic film is damaged, the pressure value suddenly changes abnormally, when abnormity is detected, a worker can be reminded in time, the abnormity can be checked in time, and related parts can be replaced in time; and the subsequent cost loss is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a valve structure for sewage plant. BACKGROUND

[0002] In order to make sewage reach the water quality requirement of discharge into a water body or reuse, the process of purifying it. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields, and more and more into the daily life of ordinary people, pneumatic valve is the valve driven by compressed air. When pneumatic valve is purchased, only the specification, category and working pressure are specified to meet the procurement requirements, which can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium;

[0003] A typical pneumatic diaphragm actuator is mainly composed of elastic diaphragm, compression spring and push rod, as shown in a pneumatic control valve disclosed by Chinese utility model patent CN219796298U; However, the pneumatic control valve in the prior art still has some deficiencies, such as the elastic diaphragm and the compression spring are inside the shell, when the elastic diaphragm is damaged, it is difficult to detect from the outside in time, and the abnormality cannot be checked or the related parts cannot be replaced in time, resulting in greater loss and increased operating cost; Therefore, the prior art needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a valve structure for sewage plant, to solve the problem of the elastic diaphragm and the compression spring in the shell, when the elastic diaphragm is damaged, it is difficult to detect from the outside in time, and the abnormality cannot be checked or the related parts cannot be replaced in time.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a valve structure for sewage plant, including actuator and control valve, the actuator is connected with control valve through flange, the actuator includes shell a, shell b and support;

[0006] The shell b is assembled at the upper end of the support, the shell a is assembled at the upper end of the shell b, and the shell a and the shell b are oppositely arranged;

[0007] The inside of the shell a and the shell b is provided with a fixed seat and an elastic diaphragm, the upper end of the fixed seat is above the elastic diaphragm and is provided with an auxiliary diaphragm;

[0008] The upper end of the fixed seat is provided with a compression spring, and the inside of the compression spring is provided with an auxiliary spring;

[0009] The two side walls of the shell a and the shell b are provided with connecting plates, and screw holes are formed in the side walls of the connecting plates, and bolts are screwed into the screw holes.

[0010] The lower side of the outer part of the bolt is screwed with a nut.

[0011] Preferably, a circular groove is formed in the center of the nut, a circular piece is placed in the circular groove, a threaded hole is formed in the circular piece, and the bolt is sleeved in the threaded hole.

[0012] Preferably, a clamping groove is formed in the nut and communicates with the circular groove, a clamping block is mounted on the circular piece, the clamping block is clamped in the clamping groove, the end of the bolt is provided with a limiting disc, and anti-skid grooves are uniformly formed in the outer wall of the nut.

[0013] Preferably, rubber pads a and rubber pads b are sleeved between the outer part of the bolt and the connecting plates, a fixing ring is mounted on the side wall of the rubber pad a facing the rubber pad b, and rubber blocks are uniformly mounted on the side wall of the fixing ring along the axis.

[0014] Preferably, a sensor is fixedly installed in the shell b, a push rod is arranged in the bracket, one end of the push rod is mounted in a fixing seat, the other end of the push rod is arranged in a control valve, and a valve core is mounted on the end of the push rod in the control valve.

[0015] Preferably, a stroke scale is arranged on the bracket, and an indicating mechanism is mounted on the push rod.

[0016] Preferably, the control valve comprises a valve body, and the side wall of the valve body is provided with a liquid inlet and a liquid outlet.

[0017] Preferably, a sealing ring a is arranged at the connection between the bracket and the shell b, and a sealing ring b is arranged at the connection between the bracket and the control valve.

[0018] Compared with the prior art, the valve structure for the sewage plant has the advantages that:

[0019] 1. The valve structure for the sewage plant is simple in structure and convenient to operate, a sensor is fixedly installed in the shell, the pressure value in the shell is detected through the sensor, when the elastic diaphragm is damaged, the pressure value will suddenly change abnormally, when the abnormality is detected, the existing device reminds the worker, the abnormality is timely investigated, loss is further avoided from being enlarged, and subsequent cost loss is prevented.

[0020] 2. The connecting plates are arranged on the two side walls of the shell a and the shell b, screw holes are formed in the side walls of the connecting plates, and the shell a and the shell b are connected through the bolts and the nuts, so that the shell a and the shell b are conveniently opened from the side, and replacement and maintenance are convenient and fast.

[0021] 3, the utility model discloses a bolt is double imprisoned through the cooperation of the screw thread between the bolt and the threaded hole of the circular piece and the screw hole, prevent loosening during long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structural diagram of the utility model;

[0023] Figure 2 It is the structural diagram of the bolt and nut of the utility model;

[0024] Figure 3 It is the structural diagram of the utility model Figure 2 The enlarged structure schematic view of part A shown in the utility model.

[0025] In the drawing: 1 actuator, 101 housing b, 102 housing a, 103 fixed seat, 104 elastic film, 105 auxiliary film, 106 auxiliary spring, 107 compression spring, 108 sensor, 109 bolt, 110 screw hole, 111 stroke scale, 112 sealing ring a, 113 support, 3 push rod, 4 indicating mechanism, 5 valve body, 501 liquid inlet, 502 liquid outlet, 6 nut, 7 circular groove, 8 circular piece, 9 threaded hole, 10 clamping groove, 11 clamping block, 12 fixed ring, 13 rubber pad a, 14 rubber block, 15 rubber pad b, 16 anti-skid groove, 17 limiting disc. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figure 1 , 2 and Figure 3The utility model provides a technical scheme: a valve structure for sewage plant, including actuating mechanism 1 and control valve 2, actuating mechanism 1 is connected with control valve 2 through flange, and actuating mechanism 1 includes casing a 102, casing b 101 and support 113, casing b 101 is assembled in the upper end of support 113, and casing a 102 is assembled in the upper end of casing b 101, and casing a 102 and casing b 101 are oppositely arranged, the inside installation of casing a 102 and casing b 101 has fixed base 103 and elastic diaphragm 104, and the upper end of fixed base 103 is located above elastic diaphragm 104 and is assembled with auxiliary diaphragm 105, the upper end of fixed base 103 is assembled with compression spring 107, and the inside of compression spring 107 is assembled with auxiliary spring 106, the both sides wall of casing a 102 and casing b 101 are installed with connecting plate, and the side wall of connecting plate is provided with screw hole 110, the screw hole 110 is screwed with bolt 109, and the outside of bolt 109 is screwed with nut 6 on the downside of connecting plate,

[0028] Fixed base 103 and elastic diaphragm 104 are prior art, and its specific installation mode is not repeated here, auxiliary diaphragm 105 is fixedly installed on fixed base 103, auxiliary diaphragm 105 is above elastic diaphragm 104, compression spring 106 and auxiliary spring 107 are fixedly installed on fixed base 103, auxiliary spring 107 is in compression spring 106, sensor 108 is fixedly installed in the inside of casing, wherein the type of sensor 108 can be determined according to actual needs, is used for detecting the pressure in the inside of casing, and in the embodiment, sensor 108 adopts pressure sensor 108, by setting auxiliary diaphragm 105, when elastic diaphragm 104 is damaged due to repeated stretching and contraction in some working scenarios needing repeatedly opening and closing control valve 2, the airtightness of casing 101 is guaranteed through auxiliary diaphragm 105, the sudden failure of actuating mechanism 1 due to the damage of elastic diaphragm 104 is avoided, and the normal working condition of control valve 2 is influenced, and the both sides wall of casing a 102 and casing a 101 is installed with connecting plate, and two connecting plates are connected through bolt main body 109.

[0029] The two side walls of the shell a102 and the shell b101 are provided with connecting plates, and the side wall of the connecting plate is provided with a threaded hole 110, a bolt 109 is screwed in the threaded hole 110, a nut 6 is screwed on the lower side of the outer part of the bolt 109, a circular groove 7 is formed in the center of the nut 6, the diameter of the circular groove 7 is larger than the diameter of the threaded hole 110, a circular piece 8 is placed in the circular groove 7, a threaded hole 9 is formed in the circular piece 8, and the bolt 109 is sleeved in the threaded hole 9 and the threaded hole 110 arranged in sequence; a clamping groove 10 is formed in the nut 6 and communicates with the circular groove 7, a clamping block 11 is mounted on the circular piece 8, the clamping block 11 is clamped in the clamping groove 10, the end of the bolt 109 is assembled with a limiting disc 17, and anti-skid grooves 16 are uniformly formed in the outer wall of the nut 6.

[0030] The outer part of the bolt 109 is sleeved with a rubber pad a13 and a rubber pad b15 between the connecting plates, a fixing ring 12 is mounted on the side wall of the rubber pad a13 facing the rubber pad b15, rubber blocks 14 are uniformly mounted on the side wall of the fixing ring 12 along the axis, the outer diameter of the rubber pad a13 and the rubber pad b15 is greater than; the inner diameter of the threaded hole 9, when the bolt 109 is screwed into the threaded hole 9, the rubber pad a13 and the rubber pad b15 are located at the upper end of the threaded hole 9, so as to seal the gap between the bolt 109 and the threaded hole 9, the rubber pad a13 and the rubber pad b15 are connected through the fixing ring 12, the rubber pad a13 is arranged on the side wall of the fixing ring 12 and located between the rubber pad a13 and the rubber pad b15, so as to connect the rubber pad a13 and the rubber pad b15 into a whole and improve the elasticity;

[0031] After the bolt 109 is screwed into the threaded hole 110, the circular piece 8 is placed in the circular groove 7, the clamping block 11 is clamped into the clamping groove 10, and the nut 6 is screwed on the bolt 109, so that the bolt 109 is screwed into the threaded hole 9 on the circular piece 8, so that the nut 6 and the bolt 109 are doubly imprisoned, and the clamping block 11 mounted on the circular piece 8 limits the rotation of the circular piece 8, which also prevents the bolt 109 in the circular piece 8 from loosening during use; the outer diameter of the rubber pad a13 and the rubber pad b15 is greater than the inner diameter of the threaded hole 110, so as to seal the gap between the bolt 109 and the threaded hole 110, after installation, the bolt 109 is placed in the threaded hole 110, the limiting disc 17 is attached to the upper connecting plate, the outer diameter of the limiting disc 17 is greater than the inner diameter of the threaded hole 110, the anti-skid groove 16 is provided, which facilitates the rotation of the nut 6, the outer diameter of the limiting disc 17 is greater than the inner diameter of the threaded hole 9, the limiting disc 17 limits the stroke of the bolt 109, and prevents it from falling out of the threaded hole 9.

[0032] The sensor 108 is fixedly installed inside the shell b 101, the push rod 3 is assembled inside the support 113, one end of the push rod 3 is installed in the fixed seat 103, the other end of the push rod 3 is arranged in the control valve 2, and the end of the push rod 3 in the control valve 2 is provided with the valve core 301.

[0033] The stroke scale 111 is arranged on the support 113, the indicating mechanism 4 is installed on the push rod 3, the indicating mechanism 4 is fixedly installed on the push rod 3, the tip of the indicating mechanism 4 faces the stroke scale 109, and when the push rod 3 moves, the opening or closing degree of the control valve 2 can be directly judged through the indicating mechanism 4 and the scale.

[0034] The control valve 2 comprises a valve body 5, and the side wall of the valve body 5 is provided with a liquid inlet 501 and a liquid outlet 502.

[0035] The connecting position of the support 113 and the shell b 101 is provided with a sealing ring a 112, and the connecting position of the support 113 and the control valve 2 is provided with a sealing ring b.

[0036] Working process and principle: in use, the sensor 108 is fixedly installed inside the shell, the pressure value inside the shell is detected through the sensor 108, when the elastic diaphragm 104 is damaged, the pressure value will suddenly change abnormally, when the abnormality is detected, the existing device reminds the worker, the abnormality is timely investigated, and the loss in subsequent cost is avoided, when the elastic diaphragm 104 is damaged, the push rod 3 in the suddenly stopped executing mechanism 1 will impact the control valve 2 under the action of the compression spring 106 and the auxiliary spring 107, and the control valve 2 is damaged, when the elastic diaphragm 104 is damaged, the executing mechanism 1 will not immediately stop working, the possibility that the control valve 2 is damaged is greatly reduced through the buffering of the auxiliary diaphragm 105, and the reaction time of the sensor 108 is given, so that the worker can be timely informed to maintain or replace, and the possible subsequent loss is prevented.

[0037] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

[0038] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A valve structure for a wastewater treatment plant, comprising an actuator (1) and a control valve (2), characterized in that: The actuator (1) is connected to the control valve (2) via a flange. The actuator (1) includes a housing a (102), a housing b (101), and a bracket (113). The housing b (101) is mounted on the upper end of the bracket (113), and the housing a (102) is mounted on the upper end of the housing b (101), with the housing a (102) and housing b (101) arranged opposite to each other; The housing a (102) and housing b (101) are equipped with a fixing seat (103) and an elastic membrane (104). The upper end of the fixing seat (103) is equipped with an auxiliary membrane (105) above the elastic membrane (104). The upper end of the fixed base (103) is equipped with a compression spring (107), and an auxiliary spring (106) is installed inside the compression spring (107). Both sides of the shell a (102) and the shell b (101) are equipped with connecting plates, and the side walls of the connecting plates are provided with screw holes (110), and bolts (109) are screwed into the screw holes (110). The bolt (109) is screwed with a nut (6) on the outside of the connecting plate on the lower side.

2. The valve structure for a wastewater treatment plant according to claim 1, characterized in that: A circular groove (7) is provided at the center of the nut (6), a circular part (8) is placed in the circular groove (7), a threaded hole (9) is provided on the circular part (8), and the bolt (109) is fitted into the threaded hole (9).

3. The valve structure for a wastewater treatment plant according to claim 2, characterized in that: The nut (6) is provided with a slot (10) that communicates with the circular groove (7), and a locking block (11) is installed on the circular part (8). The locking block (11) is locked in the slot (10). The end of the bolt (109) is equipped with a limiting plate (17). The outer wall of the nut (6) is uniformly provided with anti-slip grooves (16).

4. The valve structure for a wastewater treatment plant according to any one of claims 1-3, characterized in that: The bolt (109) is fitted with rubber pads a (13) and b (15) between the connecting plates. A fixing ring (12) is installed on the side wall of the rubber pad a (13) facing the rubber pad b (15). Rubber blocks (14) are evenly installed on the side wall of the fixing ring (12) along its axis.

5. The valve structure for a wastewater treatment plant according to any one of claims 1-3, characterized in that: A sensor (108) is fixedly installed inside the housing b (101), and a push rod (3) is assembled inside the bracket (113). One end of the push rod (3) is installed in the fixed seat (103), and the other end of the push rod (3) is placed in the control valve (2). A valve core (301) is installed at the end of the push rod (3) located in the control valve (2).

6. The valve structure for a wastewater treatment plant according to any one of claims 1-3, characterized in that: The bracket (113) is equipped with a travel scale (111), and the push rod (3) is equipped with an indicator mechanism (4).

7. The valve structure for a wastewater treatment plant according to claim 1, characterized in that: The control valve (2) includes a valve body (5), and the side wall of the valve body (5) is provided with an inlet (501) and an outlet (502).

8. The valve structure for a wastewater treatment plant according to claim 1, characterized in that: A sealing ring a (112) is provided at the connection between the bracket (113) and the housing b (101), and a sealing ring b is provided at the connection between the bracket (113) and the control valve (2).

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