Detachable glass fiber reinforced plastic anti-corrosion butterfly valve

Abstract

The utility model relates to a detachable glass fiber reinforced plastic anti-corrosion butterfly valve which comprises a valve body, a connecting pipe, a butterfly plate, a valve shaft and a valve sealing plate. The valve body comprises two valve shells which are symmetrically arranged and fixedly connected into a whole, the receding parts on the inner side faces of the valve shells are provided with inwards-concave receding parts, the two receding parts jointly form a mounting cavity, and the mounting cavity is provided with an opening in the upper end face of the valve body. The connecting pipe is connected with the valve shell; the valve sealing plate is located in the mounting cavity and composed of two sealing plate single bodies which are symmetrically arranged. Valve plate matching holes are formed in the positions, corresponding to the connecting pipes, of the sealing plate single bodies, and the valve plate matching holes in the two sealing plate single bodies jointly form a valve cavity. Shaft grooves are formed in the butt joint faces of the sealing plate single bodies, and the shaft grooves in the two sealing plate single bodies form a shaft hole. The butterfly plate is rotationally mounted in the valve cavity; the valve shaft is rotationally mounted in the shaft hole and connected with the butterfly plate, and the valve shaft and the butterfly plate rotate synchronously; during maintenance, a whole formed by the valve sealing plate, the butterfly plate and the valve shaft can be lifted out of the mounting cavity, and mounting and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a detachable glass fiber reinforced plastic anti-corrosion butterfly valve. Background Art

[0002] In the field of valve throttling and corrosion protection for water supply and drainage, rainwater and sewage treatment, seawater treatment, etc., the valves commonly used are mobile gates. Traditional concrete gate valves have problems such as inconvenient transportation of manufacturing materials, long construction period, high cost, difficult to open and close, poor sealing, corrosion resistance, short service life, and labor-intensive operation.

[0003] In order to solve the problems of traditional gate valve materials being inconvenient to transport, long construction period, corrosion resistance, inconvenient maintenance, and high operating and replacement costs, it is urgent to design and develop a valve body that is easy to install and maintain. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a detachable glass fiber reinforced plastic anti-corrosion butterfly valve, which is convenient for installation and maintenance.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a detachable glass fiber reinforced plastic anti-corrosion butterfly valve comprises a valve body, a connecting pipe, a butterfly plate, a valve shaft and a valve sealing plate;

[0006] The valve body comprises two valve housings which are symmetrically arranged and fixedly connected as one body, and a recessed recess is provided on the inner side surface of the valve housing, and the two recesses together constitute a mounting cavity, and the mounting cavity opens on the upper end surface of the valve body;

[0007] The connecting pipe is fixedly connected to the outer side wall of the valve housing and communicates with the installation cavity through the flow hole on the valve housing;

[0008] The valve sealing plate is located in the installation cavity, and the valve sealing plate is composed of two symmetrically arranged sealing plate monomers; a valve plate matching hole is provided at the position of the sealing plate monomer corresponding to the position of the connecting pipe, and the valve plate matching holes on the two sealing plate monomers together constitute the valve cavity; an axial groove is provided on the docking surface of the sealing plate monomer, and the two ends of the axial groove extend to the upper end surface of the valve cavity and the sealing plate monomer respectively, and the axial grooves on the two sealing plate monomers constitute the axial hole;

[0009] The butterfly plate is rotatably mounted in the valve cavity;

[0010] The valve shaft is rotatably mounted in the shaft hole, one end of the valve shaft extends to the butterfly plate and is connected to the butterfly plate to achieve synchronous rotation of the two; the other end extends to the outside of the valve body for connecting the transmission device;

[0011] When maintenance is needed, the valve sealing plate, butterfly plate and valve shaft can be lifted out of the installation cavity from bottom to top.

[0012] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, the extension direction of the shaft groove passes through the rotation center of the butterfly plate, and the shaft groove extends to the lower side of the valve plate matching hole; the inner end of the valve shaft extends to the lower side of the butterfly plate.

[0013] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, a plurality of first reinforcing platforms are further provided on the outer side surface of the valve housing.

[0014] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, the first reinforcement platform is strip-shaped and extends horizontally, and a plurality of first reinforcement platforms are parallel to each other and arranged at intervals.

[0015] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, a plurality of second reinforcing platforms are further arranged on the two end surfaces of the valve plate body.

[0016] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, a plurality of second reinforcing platforms are arranged parallel to each other and at intervals.

[0017] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, a first sealing strip is provided at the joint of the two sealing plate monomers, and the first sealing strip forms a seal at the joint of the two sealing plate monomers and the two valve housings.

[0018] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, a connecting boss is provided in the middle of the valve plate body, and the connecting boss extends radially along the valve plate body; the connecting boss has a connecting hole penetrating its upper and lower end surfaces, and the valve shaft is located in the connecting hole.

[0019] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, a second sealing strip is detachably installed on the outer edge of the valve plate body, which is used to achieve sealing between the valve plate body and the matching hole of the valve plate.

[0020] In the above-mentioned detachable glass fiber reinforced plastic anti-corrosion butterfly valve, the second sealing strip includes two semicircular O-type sealing rings, and the two semicircular O-type sealing rings are respectively located on both sides of the valve shaft.

[0021] Due to the adoption of the above technical solution, the detachable glass fiber reinforced plastic anti-corrosion butterfly valve of the present application has the following advantages:

[0022] The overall structure of the valve is changed, and the valve sealing plate, butterfly plate and valve shaft are formed into a detachable whole, which ensures convenient maintenance and disassembly during use and increases the service life.

[0023] The valve body, valve sealing plate, butterfly plate, etc. are made of fiberglass, which has anti-corrosion effect.

[0024] The butterfly valve is assembled and formed in the factory at one time, which can reduce the construction cost; the direct burial process is adopted, that is, on-site construction, connection installation and backfilling can complete the connection installation, which improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of the installation structure of the sealing plate and the butterfly plate in the embodiment of the utility model.

[0028] In the figure:

[0029] 1-valve body; 11-valve housing; 12-bolt hole; 13-first reinforcement platform;

[0030] 2-Connecting pipe;

[0031] 3-butterfly plate; 31-valve plate body; 32-connecting boss; 33-second reinforcement platform;

[0032] 4-valve shaft;

[0033] 5-valve sealing plate; 51-sealing plate monomer; 52-valve plate matching hole; 53-shaft groove; 54-weight reduction part;

[0034] 6- first sealing strip;

[0035] 7- Second sealing strip. DETAILED DESCRIPTION

[0036] A removable glass fiber reinforced plastic anti-corrosion butterfly valve Figure 1 As shown, it includes a valve body 1, a connecting pipe 2, a butterfly plate 3 and a valve shaft 4. The valve body 1 is formed by docking and assembling two symmetrically arranged valve housings 11. Specifically, the outer edge of the valve housing 11 is processed with a plurality of bolt holes 12, and the bolt holes 12 are evenly distributed on the valve housing 11; the two valve housings 11 are docked and fixedly connected as a whole through the bolts located in the bolt holes 12 and the nuts matched with the bolts. The side of the two valve housings 11 docked is its inner side, and the side opposite to the inner side is the outer side. The inner side of the valve housing 11 is provided with a concave avoidance portion. After the two valve housings 11 are docked, an installation cavity is formed between the two avoidance portions, and the installation cavity opens on the upper end surface of the valve body 1. The valve housing 11 is provided with a flow hole, and the connecting pipe 2 is fixedly and sealedly connected to the outer wall of the valve housing 11. The flow hole is located on the inner side of the connecting pipe 2, connecting the installation cavity and the connecting pipe 2. The connecting pipe 2 and the valve housing 11 can be fixedly connected by gluing, bonding, etc.

[0037] A plurality of first reinforcement platforms 13 are also provided on the outer side of the valve housing 11. The shape and position of the first reinforcement platforms 13 can be designed according to actual needs; for example, Figure 1 As shown, the plurality of first reinforcing platforms 13 are all in strip shape and are parallel to each other and arranged at intervals.

[0038] A valve sealing plate 5 is installed in the installation cavity, and the valve sealing plate 5 and the installation cavity are sealed as necessary. For example, a sealing strip is arranged on the periphery of the flow hole to achieve sealing to prevent liquid from entering the installation cavity. This is the prior art. The valve sealing plate 5 is composed of two symmetrically arranged sealing plate monomers 51. A first sealing strip 6 is arranged at the joint of the two sealing plate monomers 51. The first sealing strip 6 forms a seal at the joint of the two sealing plate monomers 51 and the two valve housings 11. Specifically, the cross section of the first sealing strip 6 is K-shaped and has four sealing arms. The four sealing arms are respectively in contact with the outer side surfaces of the two sealing plate monomers 51 and the inner side surfaces of the two valve housings 11.

[0039] A valve plate matching hole 52 is provided at the position corresponding to the position of the sealing plate monomer 51 and the connecting pipe 2. The valve plate matching holes 52 on the two sealing plate monomers 51 together form a valve cavity; sealing strips, sealing rings, etc. are provided on the side walls of the valve cavity to seal the butt joints of the two sealing plate monomers 51. The opposite sides of the two sealing plate monomers 51 are butt joint surfaces, and an axial groove 53 is provided on the butt joint surface of the sealing plate monomer 51. The extension direction of the axial groove 53 passes through the center of the valve plate matching hole 52; the two ends of the axial groove 53 extend to the upper end surface of the valve cavity and the sealing plate monomer 51 respectively. After the two sealing plate monomers 51 are butt jointed, the axial grooves 53 are butt jointed to form an axial hole.

[0040] The butterfly plate 3 is rotatably mounted in the valve cavity; the valve shaft 4 is rotatably mounted in the shaft hole; the butterfly plate 3 and the valve shaft 4 can rotate synchronously. Specifically, the butterfly plate 3 includes a valve plate body 31, which is a circular plate adapted to the longitudinal cross-sectional shape of the valve cavity; a connecting boss 32 is provided in the middle of the valve plate body 31, and the connecting boss 32 extends radially along the valve plate body 31. The connecting boss 32 has a connecting hole that passes through its upper and lower end faces, the valve shaft 4 is located in the connecting hole, and after the valve shaft 4 is fixedly connected or clamped with the valve plate body 31, the two rotate synchronously. Both ends of the valve shaft 4 extend out of the connecting hole, the valve shaft 4 on the outside of the connecting hole is rotatably mounted in the shaft groove 53, and the upper end of the valve shaft 4 extends out of the valve body 1, and is connected to a transmission device, and the rotation and locking of the valve shaft 4 are controlled by the transmission device; the transmission device can be an existing structure such as pneumatic, hydraulic, turbine transmission, etc., which is not improved in this application, so it is not described in detail here.

[0041] Furthermore, the lower end of the shaft groove 53 extends to the lower side of the valve plate matching hole 52 , and the valve shaft 7 also extends to the lower side of the butterfly plate 3 , which can better support the butterfly plate 3 .

[0042] The outer edge of the valve plate body 31 is detachably mounted with a second sealing strip 7 for sealing and water stopping the valve plate body 31 and the valve plate matching hole 52. Specifically, the second sealing strip 7 includes two semicircular O-rings, which are respectively located on both sides of the valve shaft 4.

[0043] A plurality of second reinforcement platforms 33 are also provided on the two end surfaces of the valve plate body 31 . The plurality of second reinforcement platforms 33 are arranged parallel to each other and at intervals.

[0044] The disassembled body composed of the valve sealing plate 5, the butterfly plate 3 and the valve shaft 4 can be hoisted out and separated from the installation cavity of the valve body 1 as a whole when maintenance is needed, so as to realize offline maintenance, ensure the connection freedom, reduce the wear of the valve plate connection, reduce the maintenance labor intensity, and increase the service life. The valve body 1, the connecting pipe 2, the butterfly plate 3 and the valve sealing plate 5 are all made of glass fiber reinforced plastics with good anti-corrosion effect. The valve body 1 can also be disassembled and maintained and cleaned at any time according to the production situation.

[0045] One or more weight-reducing parts 54 may also be provided on the sealing plate monomer 51 to reduce the weight of the valve sealing plate 5 and improve operability; reduce material usage and reduce production costs.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A detachable glass fiber reinforced plastic anti-corrosion butterfly valve, characterized by: It comprises a valve body (1), a connecting pipe (2), a butterfly plate (3), a valve shaft (4) and a valve sealing plate (5); The valve body (1) comprises two valve housings (11) which are symmetrically arranged and fixedly connected as one body, the avoidance portion on the inner side surface of the valve housing (11) is provided with an inwardly concave avoidance portion, the two avoidance portions together form a mounting cavity, and the mounting cavity opens on the upper end surface of the valve body (1); The connecting pipe (2) is fixedly connected to the outer wall of the valve housing (11) and communicates with the installation cavity through a flow hole on the valve housing (11); The valve sealing plate (5) is located in the installation cavity, and the valve sealing plate (5) is composed of two symmetrically arranged sealing plate monomers (51); a valve plate matching hole (52) is provided at a position corresponding to the position of the sealing plate monomer (51) and the connecting pipe (2), and the valve plate matching holes (52) on the two sealing plate monomers (51) together constitute the valve cavity; an axial groove (53) is provided on the mating surface of the sealing plate monomer (51), and the two ends of the axial groove (53) extend to the valve cavity and the upper end surface of the sealing plate monomer (51), respectively, and the axial grooves (53) on the two sealing plate monomers (51) constitute the axial hole; The butterfly plate (3) is rotatably mounted in the valve cavity, the butterfly plate (3) comprises a valve plate body (31), the valve plate body (31) is a circular plate, and is adapted to the longitudinal cross-sectional shape of the valve cavity; The valve shaft (4) is rotatably mounted in the shaft hole, one end of the valve shaft (4) extends to the butterfly plate (3) and is connected to the butterfly plate (3) to achieve synchronous rotation of the two; the other end extends to the outside of the valve body (1) and is used to connect to the transmission device; When maintenance is required, the valve sealing plate (5), the butterfly plate (3) and the valve shaft (4) can be lifted out of the installation cavity from bottom to top.

2. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 1, characterized in that: The extending direction of the shaft groove (53) passes through the rotation center of the butterfly plate (3), and the shaft groove (53) extends to the lower side of the valve plate matching hole (52); the inner end of the valve shaft (4) extends to the lower side of the butterfly plate (3).

3. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 1, characterized in that: A plurality of first reinforcement platforms (13) are also provided on the outer side surface of the valve housing (11).

4. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 3 is characterized in that: The first reinforcing platform (13) is strip-shaped and extends horizontally, and a plurality of first reinforcing platforms (13) are arranged parallel to each other and at intervals.

5. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 1, characterized in that: A plurality of second reinforcement platforms (33) are also provided on the two end surfaces of the valve plate body (31).

6. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 5, characterized in that: The plurality of second reinforcing platforms (33) are arranged parallel to each other and at intervals.

7. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 1, characterized in that: A first sealing strip (6) is provided at the joint of the two sealing plate monomers (51), and the first sealing strip (6) forms a seal at the joint of the two sealing plate monomers (51) and the two valve housings (11).

8. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 1, characterized in that: A connecting boss (32) is provided in the middle of the valve plate body (31), and the connecting boss (32) extends radially along the valve plate body (31); the connecting boss (32) has a connecting hole penetrating its upper and lower end surfaces, and the valve shaft (4) is located in the connecting hole.

9. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 1, characterized in that: A second sealing strip (7) is detachably mounted on the outer edge of the valve plate body (31) for achieving sealing between the valve plate body (31) and the valve plate matching hole (52).

10. The detachable glass fiber reinforced plastic anti-corrosion butterfly valve according to claim 9, characterized in that: The second sealing strip (7) comprises two semicircular O-type sealing rings, which are respectively located on two sides of the valve shaft (4).

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