CN216279601U - Integrated fire-retardant breather valve with replaceable valve seat - Google Patents
Integrated fire-retardant breather valve with replaceable valve seat Download PDFInfo
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- CN216279601U CN216279601U CN202123026709.3U CN202123026709U CN216279601U CN 216279601 U CN216279601 U CN 216279601U CN 202123026709 U CN202123026709 U CN 202123026709U CN 216279601 U CN216279601 U CN 216279601U
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Abstract
The utility model provides an integrated fire retardant breather valve with a replaceable valve seat, which comprises: a valve body including an outer valve body portion and an inner valve body portion; the positive pressure balance valve core comprises a positive pressure valve seat, a positive pressure valve disc, a positive pressure airtight piece and a positive pressure fastening assembly, the positive pressure valve seat is in airtight fit with the positive pressure mounting port through the positive pressure airtight piece, and the positive pressure fastening assembly is arranged on the positive pressure valve seat and is in butt fit with the positive pressure mounting port of the inner valve body part; the negative pressure balance valve core comprises a negative pressure valve seat, a negative pressure valve disc, a negative pressure airtight piece and a negative pressure fastening assembly, the negative pressure valve seat is in airtight fit with the negative pressure mounting opening through the negative pressure airtight piece, and the negative pressure fastening assembly is arranged on the negative pressure valve seat and is in butt fit with the negative pressure mounting opening of the inner valve body. The integrated fire-retardant breather valve provided by the utility model can be replaced and maintained in a use site, so that the use performance of the integrated fire-retardant breather valve is improved, and the use cost of customers is reduced.
Description
Technical Field
The utility model relates to the technical field of breather valves, in particular to an integrated fire-retardant breather valve with a replaceable valve seat.
Background
The working principle of the integrated fire-retardant breather valve is as follows: the valve disc is moved up and down at a fixed position under the self-weight and limiting action of the valve disc, the valve disc is opened and closed under the positive pressure and the negative pressure, and meanwhile, the explosion of combustible gas caused by thunder in the atmosphere is prevented through the fire retardant action of the fire retardant element. The normal breather valve has the functions of positive pressure discharge and negative pressure suction, and when the interior of the storage tank bears positive pressure, the positive pressure valve disc of the integrated fire-retardant breather valve is opened and the exhaled air is discharged to positive pressure; when the interior of the storage tank bears negative pressure, a negative pressure valve disc of the integrated fire-retardant breather valve is opened and sucks air or nitrogen to balance the pressure in the storage tank; the pressure in the storage tank is ensured to be within a normal working range through the two modes, so that the safety of the storage tank is ensured.
Traditional integrated fire retardant respirators are typically assembled from a breather housing, positive pressure valve disc, negative pressure valve disc, fire retardant elements, fasteners, and the like. The fire retardant element is assembled by sequentially arranging a plurality of fire retardant cores into the shell. However, the conventional integrated fire retardant breather valve has the following problems:
firstly, a valve seat adopted on a traditional integrated fire-retardant breather valve is directly processed on a valve body, for example, a cast carbon steel valve body is directly welded on a stainless steel valve seat; as another example, a cast stainless steel valve body is directly machined to form a stainless steel valve seat. Above two kinds of circumstances all form a whole with the disk seat and the valve body of integral type back-fire relief breather valve, and the roughness of the sealed face of disk seat is the sealed weak point of integral type back-fire relief breather valve, in case the sealed face of disk seat warp or take place the damage in the in-process of production will lead to the disk of integral type back-fire relief breather valve to seal not tightly with the disk seat and take place serious leakage. In addition, the sealing surface of the valve seat cannot be repaired after being damaged, so that the sealing on the valve disc can be directly failed, and finally the whole integrated fire-retardant breather valve is scrapped. That is to say, traditional integral type back-fire relief breather valve causes the damage of breather valve sealing face easily in the assembling process or leads to sealed face inefficacy because of corrosive action in the in-service use process to make complete set of product scrap. The existing Chinese patent (application number: CN202011592252.X) discloses an integrated fire-resistant fire-retardant breather valve, wherein a valve seat and a valve body are integrally formed. The prior Chinese patent (application number: CN202120276316.9) discloses an integrated fire-retardant breather valve integrating rapid detection and replacement functions, wherein a valve seat and a valve body are welded into a non-detachable integral structure.
Secondly, traditional integral type back-fire relief breather valve adopts liquid nitrogen low temperature freezing assembly process to install the valve seat into the valve body, and the rethread thermal expansion effect fuses stainless steel valve seat and carbon steel/stainless steel valve body as an organic whole and forms sealedly, but this type of valve seat still is inconvenient the change if involve damage or corruption in the environment of in-service use. The original disk seat that gets into the valve body through the low temperature assembly will be demolishd at first, cause the secondary damage of the sealed face of the disk seat circle of valve body very easily when demolising old disk seat, carry out the low temperature once more with new disk seat and freeze the valve body for a period, that is to say, the maintenance of traditional integral type back-fire relief breather valve needs special equipment and processing technology, can't accomplish in the actual operating environment, if the complete set maintenance of returning the factory, must waste a lot of time, will cause certain economic loss for the owner. The prior Chinese patent (application number: CN202022269600.1) discloses a replaceable metal valve seat of a breather valve. However, the replaceable metal valve seat of the breather valve cannot have the characteristic of quick assembly and disassembly.
SUMMERY OF THE UTILITY MODEL
In view of the above drawbacks of the prior art, the present invention provides an integrated fire-retardant breather valve with a replaceable valve seat, in which a positive pressure valve seat and a negative pressure valve seat are installed as separately designed components on an inner valve body, the valve seat of the integrated fire-retardant breather valve can be replaced and maintained in a use site, and the valve seats made of different materials can be replaced and used according to a use environment or a customer's requirement, so that the use performance of the integrated fire-retardant breather valve is improved, and the use cost of the customer is reduced.
In order to solve the technical problem, the utility model provides an integrated fire retardant breather valve with a replaceable valve seat, which comprises:
the valve body comprises an outer valve body part and an inner valve body part which is integrally formed in the outer valve body part, the outer valve body part is provided with a storage tank mounting opening with a downward opening and a valve cover mounting opening with an upward opening, and the inner valve body part is provided with a positive pressure mounting opening with a downward opening, a negative pressure mounting opening with an upward opening and a fire retardant mounting opening with a lateral opening;
the positive pressure balanced valve core comprises a positive pressure valve seat, a positive pressure valve disc, a positive pressure airtight piece and a positive pressure fastening assembly, the positive pressure valve seat is nested in the positive pressure mounting port, the positive pressure valve seat is in airtight fit with the positive pressure mounting port through the positive pressure airtight piece, the positive pressure valve disc is in open-close fit with the positive pressure valve seat, and the positive pressure fastening assembly is arranged on the positive pressure valve seat and is in butt fit with the positive pressure mounting port of the inner valve body part;
the negative pressure balance valve core comprises a negative pressure valve seat, a negative pressure valve disc, a negative pressure airtight piece and a negative pressure fastening assembly, the negative pressure valve seat is nested in the negative pressure mounting opening, the negative pressure valve seat is in airtight fit with the negative pressure mounting opening through the negative pressure airtight piece, the negative pressure valve disc is in open-close fit with the negative pressure valve seat, and the negative pressure fastening assembly is arranged on the negative pressure valve seat and is in butt fit with the negative pressure mounting opening of the inner valve body.
Preferably, the positive pressure set component comprises a plurality of positive pressure set screws, and the positive pressure set screws are threaded through the positive pressure valve seat.
Preferably, the positive pressure set screw is disposed obliquely.
Preferably, the negative pressure fastening assembly comprises a plurality of negative pressure fastening screws, and the negative pressure fastening screws are threaded through the negative pressure valve seat.
Preferably, the negative pressure set screw is obliquely arranged.
Preferably, the periphery wall of the positive pressure valve seat is provided with a positive pressure anti-falling bulge which stops at the positive pressure mounting opening.
Preferably, the outer peripheral wall of the negative pressure valve seat is provided with a negative pressure anti-falling bulge, and the negative pressure anti-falling bulge is stopped at the negative pressure mounting opening.
Preferably, a positive pressure annular groove is formed in the peripheral wall of the positive pressure valve seat and used for embedding a positive pressure air sealing piece.
Preferably, a negative pressure annular groove is formed in the peripheral wall of the negative pressure valve seat and used for embedding a negative pressure air sealing piece.
Preferably, the positive pressure balanced valve core further comprises a positive pressure guide piece, a suspension frame and a positive pressure valve rod, the positive pressure guide piece is connected to the positive pressure valve seat through the suspension frame and is coaxially arranged with the positive pressure valve seat, and the positive pressure valve rod is arranged on the positive pressure guide piece in an up-and-down sliding mode and is connected to the positive pressure valve disk.
As mentioned above, the integrated fire retardant breather valve with the replaceable valve seat has the following beneficial effects: the positive pressure valve seat of the positive pressure balance valve core is in airtight fit with the positive pressure mounting port through the positive pressure airtight piece, so that the airtightness between the positive pressure valve seat and the positive pressure mounting port of the inner valve body part is ensured; the positive pressure tight setting assembly is arranged on the positive pressure valve seat and is in butt fit with the positive pressure mounting port of the inner valve body part, so that the positive pressure valve seat can be detachably connected with the positive pressure mounting port of the inner valve body part. Meanwhile, the negative pressure valve seat of the negative pressure balance valve core is in air tight fit with the negative pressure mounting port through the negative pressure air tight piece, so that the air tightness between the negative pressure valve seat and the negative pressure mounting port of the inner valve body part can be ensured; the negative pressure fastening assembly is arranged on the negative pressure valve seat and is in butt fit with the negative pressure mounting opening of the inner valve body part, so that the negative pressure valve seat can be detachably connected with the negative pressure mounting opening of the inner valve body part. That is, the positive pressure valve seat and the negative pressure valve seat are designed separately and are mounted on the inner valve body portion as separately designed components. If the positive pressure valve seat or the negative pressure valve seat is damaged, a worker can quickly replace a new positive pressure valve seat or a new negative pressure valve seat on the using site. At the in-process of changing new malleation disk seat negative pressure disk seat, need not any operation of starting a fire, also need not professional equipment and maintain, more need not the integral type back-fire relief breather valve of renewal, really reach the purpose of quick maintenance, fall to the minimum with the maintenance loss of disk seat. In addition, the material of malleation disk seat or negative pressure disk seat can realize individualized customization, customizes or is equipped with a plurality of malleation disk seats or negative pressure disk seats of different materials according to customer's needs, and then carries out arbitrary combination collocation with the valve body of being made by carbon steel, stainless steel to improve the product price/performance ratio of whole integral type back-fire relief breather valve. Positive pressure disk seat or negative pressure disk seat can also be according to service environment's needs, directly upgrades into sealed disk seat and the valve disc of sealed effect better hard, and the valve body still continues to use originally, need not whole change integral type back-fire relief breather valve, has promoted the performance of breather valve, reduces customer's use cost. Therefore, the integrated fire retardant breather valve with the replaceable valve seat has the advantages that the positive pressure valve seat and the negative pressure valve seat are arranged on the inner valve body part as independently designed spare parts, the valve seat of the integrated fire retardant breather valve can be replaced and maintained in a use site, the valve seats made of different materials can be replaced and used according to the use environment or the requirements of customers, the use performance of the integrated fire retardant breather valve is improved, and the use cost of the customers is reduced.
Drawings
FIG. 1 shows a schematic view of an integrated fire retardant breather valve of the present invention with a replaceable valve seat;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
fig. 4 shows a schematic view of the connection of the positive pressure valve seat, the positive pressure guide, and the suspension.
Description of the element reference numerals
1 valve body
11 outer valve body part
111 storage tank mounting port
112 valve cover mounting opening
12 internal valve body part
121 positive pressure mounting port
122 negative pressure mounting port
123 fire-retardant installing port
2 positive pressure balance valve core
21 positive pressure valve seat
211 positive pressure anti-falling projection
212 positive pressure annular groove
22 positive pressure valve disc
23 positive pressure gas seal
24 positive pressure fastening assembly
241 positive pressure set screw
25 positive pressure guide
26 hanging rack
27 positive pressure valve rod
3 negative pressure balance valve core
31 negative pressure valve seat
311 negative pressure anti-falling bulge
312 negative pressure ring groove
32 negative pressure valve disc
33 negative pressure airtight piece
34 negative pressure fastening assembly
341 negative pressure set screw
4 flame arrester
5 Shielding structure
51 fastening screw
52 shield cover
6 valve cover
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, 2 and 3, the present invention provides an integrated fire retardant breather valve with replaceable valve seat, comprising:
the valve body 1 comprises an outer valve body part 11 and an inner valve body part 12 integrally formed in the outer valve body part 11, wherein the outer valve body part 11 is provided with a storage tank mounting opening 111 and a valve cover mounting opening 112 which are opened downwards and upwards, and the inner valve body part 12 is provided with a positive pressure mounting opening 121, a negative pressure mounting opening 122 and a fire retardant mounting opening 123 which are opened laterally;
the positive pressure balanced valve core 2, the positive pressure balanced valve core 2 includes the positive pressure valve seat 21, the positive pressure valve disk 22, the positive pressure airtight piece 23 and the positive pressure tight setting assembly 24, the positive pressure valve seat 21 is nested in the positive pressure installing port 121, the positive pressure valve seat 21 is hermetically matched with the positive pressure installing port 121 through the positive pressure airtight piece 23, the positive pressure valve disk 22 is matched with the positive pressure valve seat 21 in an opening and closing manner, the positive pressure tight setting assembly 24 is arranged on the positive pressure valve seat 21 and is matched with the positive pressure installing port 121 of the inner valve body part 12 in an abutting manner;
the negative pressure balance valve core 3, the negative pressure balance valve core 3 includes negative pressure valve seat 31, negative pressure valve disk 32, negative pressure airtight piece 33 and negative pressure tight fixed subassembly 34, the negative pressure valve seat 31 nests in the negative pressure installing port 122, the negative pressure valve seat 31 passes through the negative pressure airtight piece 33 and the airtight cooperation of negative pressure installing port 122, the negative pressure valve disk 32 and the negative pressure valve seat 31 open and close cooperation, the negative pressure tight fixed subassembly 34 is located the negative pressure valve seat 31 and with the butt cooperation of negative pressure installing port 122 of interior valve body portion 12.
In the utility model, based on the important degree of the valve core sealing performance of the integrated fire-retardant breather valve, the valve seat and the valve body are separately designed, namely, the positive pressure valve seat 21 of the positive pressure balance valve core 2 is in airtight fit with the positive pressure mounting port 121 through the positive pressure airtight piece 23, so that the airtightness between the positive pressure valve seat 21 and the positive pressure mounting port 121 of the inner valve body part 12 is ensured; the positive pressure setting unit 24 is provided on the positive pressure valve seat 21 and is in abutting engagement with the positive pressure attachment port 121 of the inner valve body 12, so that the positive pressure valve seat 21 and the positive pressure attachment port 121 of the inner valve body 12 can be detachably connected. Meanwhile, the negative pressure valve seat 31 of the negative pressure balance valve core 3 is in airtight fit with the negative pressure mounting port 122 through the negative pressure airtight piece 33, so that airtightness between the negative pressure valve seat 31 and the negative pressure mounting port 122 of the inner valve body part 12 can be ensured; the negative pressure clamping assembly 34 is disposed on the negative pressure valve seat 31 and is in abutting engagement with the negative pressure mounting opening 122 of the inner valve body 12, such that the negative pressure valve seat 31 and the negative pressure mounting opening 122 of the inner valve body 12 can be detachably connected. That is, the positive pressure valve seat 21 and the negative pressure valve seat 31 are designed separately and are mounted to the inner valve body portion 12 as separately designed components. If the positive pressure valve seat 21 or the negative pressure valve seat 31 is damaged, a worker can quickly replace the new positive pressure valve seat 21 or the new negative pressure valve seat 31 at the use site. In the process of replacing a new positive pressure valve seat 21 or a new negative pressure valve seat 31, the fire operation is not needed, the maintenance is also not needed by special equipment, the replacement of the new integrated fire retardant breather valve is not needed, the aim of quick maintenance is really achieved, and the maintenance loss of the valve seats is reduced to the minimum. In addition, the material of malleation disk seat 21 or negative pressure disk seat 31 can realize individualized customization, customizes or is equipped with a plurality of malleation disk seats 21 or negative pressure disk seat 31 of different materials according to customer's needs, and then carries out arbitrary combination collocation with the valve body 1 of making by carbon steel, stainless steel to improve the product price/performance ratio of whole integral type back-fire relief breather valve. Positive pressure disk seat 21 or negative pressure valve seat 31 can also be according to service environment's needs, directly upgrades into sealed better hard sealed disk seat and the valve disc of sealed effect, and valve body 1 still continues to use originally, need not whole change integral type back-fire relief breather valve, has promoted the performance of breather valve, reduces customer's use cost.
Therefore, the positive pressure valve seat 21 and the negative pressure valve seat 31 are arranged on the inner valve body 12 as separately designed parts, the valve seats of the integrated fire retardant breather valve can be replaced and maintained in a use site, the valve seats made of different materials can be replaced and used according to the use environment or the requirements of customers, the use performance of the integrated fire retardant breather valve is improved, and the use cost of the customers is reduced.
As shown in fig. 2, in order to realize the detachable fitting of the positive pressure valve seat 21 to the positive pressure mounting port 121 of the inner valve body portion 12, the positive pressure setting assembly 24 includes a plurality of positive pressure setting screws 241, and the positive pressure setting screws 241 are threaded through the positive pressure valve seat 21; similarly, in order to achieve the detachable assembly of the negative pressure valve seat 31 to the negative pressure mounting port 122 of the inner valve body 12, the negative pressure fastening assembly 34 includes a plurality of negative pressure fastening screws 341, and the negative pressure fastening screws 341 are threaded through the negative pressure valve seat 31.
The positive pressure set screw 241 or the negative pressure set screw 341 may be arranged horizontally or may be disposed obliquely. The positive pressure set screw 241 or the negative pressure set screw 341 is provided obliquely in order to prevent the positive pressure valve seat 21 from being separated upward from the positive pressure attachment port 121 and to prevent the negative pressure valve seat 31 from being separated upward from the negative pressure attachment port 122. Further, the force application end of the positive pressure set screw 241 or the force application end of the negative pressure set screw 341 is directed in an obliquely upward direction. Further, when the force applying end of the positive pressure set screw 241 is gradually pushed against the positive pressure mounting port 121, the positive pressure valve seat 21 is gradually pressed downward until it is fitted to the positive pressure mounting port 121; similarly, when the force-applying end of the negative pressure fastening screw 341 gradually pushes against the negative pressure mounting opening 122, the negative pressure valve seat 31 is gradually pressed downward until it is fitted to the negative pressure mounting opening 122.
In order to prevent the positive pressure valve seat 21 from falling off downwards, the outer peripheral wall of the positive pressure valve seat 21 is provided with a positive pressure anti-falling bulge 211, the positive pressure anti-falling bulge 211 is stopped at the positive pressure mounting port 121, and the positive pressure anti-falling bulge 211 can be integrally formed on the positive pressure valve seat 21 or can be an independent part; the positive pressure anti-falling bulge 211 can be annular or block-shaped; similarly, in order to prevent the negative pressure valve seat 31 from falling downward, the outer peripheral wall of the negative pressure valve seat 31 has a negative pressure anti-drop projection 311, and the negative pressure anti-drop projection 311 is stopped by the negative pressure mounting opening 122. The negative pressure drop-preventing protrusion 311 may be integrally formed on the negative pressure valve seat 31, or may be an independent component; the negative pressure drop-preventing protrusion 311 may be ring-shaped or block-shaped.
The positive pressure air seal 23 and the negative pressure air seal 33 are formed of seal rings, for example, the positive pressure air seal 23 is an O-ring, and the O-ring is fitted over the positive pressure valve seat 21; the negative pressure air-tight member 33 is also an O-ring, and the O-ring is sleeved on the negative pressure valve seat 31.
In order to facilitate installation of the positive pressure airtight member 23, a positive pressure annular groove 212 is formed in the outer peripheral wall of the positive pressure valve seat 21, and the positive pressure annular groove 212 is used for embedding the positive pressure airtight member 23; similarly, in order to facilitate installation of the negative pressure air seal member 33, a negative pressure annular groove 312 is formed in the outer peripheral wall of the negative pressure valve seat 31, and the negative pressure annular groove 312 is used for embedding the negative pressure air seal member 33.
In order to prevent sparks or sparks from entering the inner valve body 12, the replaceable valve seat integrated fire retardant breather valve further comprises a fire retardant 4, and the fire retardant 4 is arranged at the fire retardant mounting opening 123.
The integrated fire retardant breather valve with the replaceable valve seat further comprises a shielding structure 5, wherein the shielding structure 5 is arranged on the fire retardant device 4 to prevent rain and snow from falling into the fire retardant device 4.
To facilitate mounting of the above-mentioned screening arrangement 5, the above-mentioned screening arrangement 5 comprises fastening screws 51 and a screening cover 52, the fastening screws 51 fastening the screening cover 52 to the flame arrester 4.
In order to install the positive pressure balance valve core 2 and the negative pressure balance valve core 3, the integrated fire-retardant breather valve with the replaceable valve seat further comprises a valve cover 6, and the valve cover 6 is arranged on a valve cover installation opening 112.
Sealing gaskets can be arranged between the valve cover 6 and the valve body 1 and between the flame arrester 4 and the valve body 1, so that the air tightness of the integrated flame-retardant breather valve is improved.
Finally, it is also important: as shown in fig. 4, the positive pressure balanced valve core 2 further includes a positive pressure guide 25, a suspension bracket 26, and a positive pressure valve rod 27, the positive pressure guide 25 is connected to the positive pressure valve seat 21 through the suspension bracket 26 and is coaxially arranged with the positive pressure valve seat 21, that is, a central axis of the positive pressure guide 25 coincides with a central axis of the positive pressure valve seat 21, and the positive pressure valve rod 27 is slidably disposed on the positive pressure guide 25 up and down and is connected to the positive pressure valve disk 22. With this arrangement, the positive pressure guide 25 does not need to be provided in a structure other than the positive pressure balanced valve element 2, thereby improving the overall compactness of the positive pressure balanced valve element 2 and reducing the difficulty in manufacturing the inner valve body portion 12. As a preferred embodiment of the above-described positive pressure balanced valve element 2: the positive pressure guide 25 is located at the center of the positive pressure valve seat 21, and the positive pressure valve rod 27 is located at the center of the positive pressure valve disc 22, that is, the central axis of the positive pressure guide 25, the central axis of the positive pressure valve seat 21, and the central axis of the positive pressure valve disc 22 are overlapped in pairs, so that the concentricity of the positive pressure valve disc 22 and the positive pressure valve seat 21 is ensured. Specifically, the positive pressure guide 25 is a sleeve member, and the sleeve member is used for allowing the positive pressure valve rod 27 to penetrate through; the suspension frame 26 is a cross rod, two ends of the cross rod are connected to the positive pressure valve seat 21, and the sleeve piece is arranged in the middle of the cross rod.
In conclusion, the integrated fire retardant breather valve with the replaceable valve seat has the advantages that the positive pressure valve seat and the negative pressure valve seat are arranged on the inner valve body as separately designed spare parts, the valve seat of the integrated fire retardant breather valve can be replaced and maintained in a use site, the valve seats made of different materials can be replaced and used according to the use environment or the requirements of customers, the use performance of the integrated fire retardant breather valve is improved, and the use cost of the customers is reduced. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an integral type back-fire relief breather valve of removable disk seat which characterized in that includes:
the valve body (1), the valve body (1) includes the outer valve body part (11) and the inner valve body part (12) that is integrated into the outer valve body part (11), the outer valve body part (11) has the storage tank installing port (111) that opens downwards and the valve cover installing port (112) that opens upwards, the inner valve body part (12) has the positive pressure installing port (121) that opens downwards, the negative pressure installing port (122) that opens upwards and the fire retardant installing port (123) that open to the side;
the positive pressure balanced valve core (2), the positive pressure balanced valve core (2) includes a positive pressure valve seat (21), a positive pressure valve disc (22), a positive pressure airtight piece (23) and a positive pressure tight setting assembly (24), the positive pressure valve seat (21) is nested in the positive pressure mounting port (121), the positive pressure valve seat (21) is in airtight fit with the positive pressure mounting port (121) through the positive pressure airtight piece (23), the positive pressure valve disc (22) is matched with the positive pressure valve seat (21) in an opening and closing mode, and the positive pressure tight setting assembly (24) is arranged on the positive pressure valve seat (21) and is in butt fit with the positive pressure mounting port (121) of the inner valve body portion (12);
negative pressure balanced valve core (3), negative pressure balanced valve core (3) are including negative pressure disk seat (31), negative pressure valve disc (32), airtight piece of negative pressure (33) and negative pressure tight subassembly (34) of deciding, negative pressure disk seat (31) nestification is in negative pressure installing port (122), negative pressure valve seat (31) are through airtight cooperation of airtight piece of negative pressure (33) and negative pressure installing port (122), negative pressure valve disc (32) and negative pressure valve seat (31) switching cooperation, negative pressure tight subassembly (34) are located negative pressure valve seat (31) and are in butt fit with negative pressure installing port (122) butt of interior valve body portion (12).
2. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 1, wherein: the positive pressure set component (24) comprises a plurality of positive pressure set screws (241), and the positive pressure set screws (241) are threaded through the positive pressure valve seat (21).
3. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 2, wherein: the positive pressure set screw (241) is obliquely arranged.
4. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 1, wherein: the negative pressure fastening assembly (34) comprises a plurality of negative pressure fastening screws (341), and the negative pressure fastening screws (341) are threaded through the negative pressure valve seat (31).
5. The replaceable valve seat integrated firestop breather valve of claim 4, wherein: the negative pressure set screw (341) is obliquely arranged.
6. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 1, wherein: the periphery wall of the positive pressure valve seat (21) is provided with a positive pressure anti-falling bulge (211), and the positive pressure anti-falling bulge (211) is stopped at the positive pressure mounting opening (121).
7. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 1, wherein: the outer peripheral wall of the negative pressure valve seat (31) is provided with a negative pressure anti-falling bulge (311), and the negative pressure anti-falling bulge (311) is stopped at the negative pressure mounting opening (122).
8. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 1, wherein: the positive pressure valve seat is characterized in that a positive pressure annular groove (212) is formed in the peripheral wall of the positive pressure valve seat (21), and the positive pressure annular groove (212) is used for embedding a positive pressure air sealing piece (23).
9. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 1, wherein: and a negative pressure annular groove (312) is formed in the peripheral wall of the negative pressure valve seat (31), and the negative pressure annular groove (312) is used for embedding a negative pressure air-tight piece (33).
10. The integrated fire retardant breather valve with replaceable valve seat as claimed in claim 1, wherein: the positive pressure balanced valve core (2) further comprises a positive pressure guide piece (25), a suspension frame (26) and a positive pressure valve rod (27), the positive pressure guide piece (25) is connected to the positive pressure valve seat (21) through the suspension frame (26) and is coaxially arranged with the positive pressure valve seat (21), and the positive pressure valve rod (27) is vertically slidably arranged on the positive pressure guide piece (25) and is connected to the positive pressure valve disk (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123026709.3U CN216279601U (en) | 2021-12-03 | 2021-12-03 | Integrated fire-retardant breather valve with replaceable valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123026709.3U CN216279601U (en) | 2021-12-03 | 2021-12-03 | Integrated fire-retardant breather valve with replaceable valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216279601U true CN216279601U (en) | 2022-04-12 |
Family
ID=81043063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123026709.3U Active CN216279601U (en) | 2021-12-03 | 2021-12-03 | Integrated fire-retardant breather valve with replaceable valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216279601U (en) |
-
2021
- 2021-12-03 CN CN202123026709.3U patent/CN216279601U/en active Active
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