Steam and material isolating valve

Abstract

The utility model relates to the field of valves, in particular to a steam and material isolating valve which comprises a shell assembly and a star-shaped rotor body. The star-shaped rotor body is provided with a core shaft part, a plurality of center plates distributed at intervals in the circumferential direction of the core shaft part and two side edge parts located at the two ends of the core shaft part respectively, a conveying groove with an opening in one side is defined by the two side edge parts and the two adjacent center plates, and an opening of the conveying groove faces the inner circumferential wall of the inner cavity; a sealing ring sleeves the side edge part, a sealing strip is arranged on one side, close to the inner peripheral wall of the inner cavity, of each center plate, and the sealing ring and the sealing strip are self-lubricating pieces and are in contact with the inner peripheral wall of the inner cavity; the sealing strip and the sealing ring abut against the inner circumferential wall of the inner cavity to form shaft hole matching type self-lubricating sealing, the sealing performance of the conveying groove is improved, meanwhile, the service life of the sealing assembly can be prolonged, the number of times of machine halt of machining equipment caused by replacement of the sealing assembly is reduced, and the production efficiency of materials is improved.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a gas-fuel isolation valve. Background Technology

[0002] Gas-material isolation valves are indispensable equipment in the cigarette, traditional Chinese medicine, and food processing industries. Materials pass through these valves from atmospheric pressure into pressurized and high-temperature processing equipment (or into negative pressure zones), undergo high-temperature and high-pressure treatment, and then exit through the valve. Maintaining the pressure and temperature of the processing equipment throughout this process places high demands on the sealing performance of the gas-material isolation valve.

[0003] In other words, due to the high temperature and pressure inside the processing equipment, the sealing components on the outer circumference of the conveying trough come into contact with the inner wall of the main housing, which is prone to wear and damage, resulting in a decrease in sealing performance.

[0004] In the Chinese patent with publication number CN107336957A entitled "A Rotary Sealing Valve", a spring acts on a push rod and a push column. The push rod drives the conical sliding sleeve to move. The top column moves from the conical surface of the conical sliding sleeve from low to high and acts on the stainless steel base of the radial seal. The stainless steel base, together with the polytetrafluoroethylene (PTFE) seal, moves upward to offset the wear space of the PTFE sealing strip and realize the adjustment and compensation of the radial seal.

[0005] However, the aforementioned patent achieves a constant seal between the PTFE sealing strip and the main housing through an adjustable mechanism and spring preload compensation, but it does not fundamentally solve the problem of easy wear of the sealing components.

[0006] In summary, improving the sealing performance and service life of sealing components has become an urgent problem for researchers in this field. Summary of the Invention

[0007] The technical problem to be solved by this utility model is: how to improve the sealing performance, service life and quick replacement of sealing components;

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] This utility model relates to a gas-material isolation valve, comprising a housing assembly and a star-shaped rotor. The housing assembly has an inner cavity and two material inlets located on the upper and lower sides of the inner cavity, one of which is a feed inlet and the other a discharge outlet. The star-shaped rotor has a spindle portion, multiple flanges spaced circumferentially along the spindle portion, and two side portions located at both ends of the spindle portion. The two side portions and two adjacent flanges form a conveying groove with one side opening, the opening of which faces the inner circumferential wall of the inner cavity. A sealing ring is fitted over the side portion, and a sealing strip is provided on the side of each flange near the inner circumferential wall of the inner cavity. Both the sealing ring and the sealing strip are self-lubricating components and are in contact with the inner circumferential wall of the inner cavity. The openings of the material groove can be aligned with the material inlets as the star-shaped rotor rotates, and the material inlets and their aligned openings are connected.

[0010] Furthermore, the sealing strip can be configured in any of the following ways: the sealing strip includes: a sealing strip skeleton connected to the side of the plate near the inner peripheral wall of the cavity; and a self-lubricating sealing layer covering the sealing strip skeleton along its length, the self-lubricating sealing layer contacting and sealing the inner peripheral wall of the cavity; or the sealing strip includes: a sealing strip skeleton connected to the side of the plate near the inner peripheral wall of the cavity, the sealing strip skeleton having a plurality of filling holes along its length on the side near the inner peripheral wall of the cavity; and a self-lubricating filler filling the filling holes, the self-lubricating filler contacting and sealing the inner peripheral wall of the cavity.

[0011] Furthermore, the sealing strip skeleton is bonded to the panel with adhesive or locked in place by a locking device.

[0012] Furthermore, the sealing strip skeleton has an insertion part extending along its length on the side near the web plate, and the web plate has an insertion groove matching the insertion part on the side near the sealing strip skeleton; the insertion part is movably inserted into the insertion groove along the length of the web plate.

[0013] Furthermore, the insertion slot is a dovetail groove or has a T-shaped cross-section.

[0014] Furthermore, the sealing ring can be configured in any of the following ways: the sealing ring includes: a sealing ring skeleton, which is fitted over the side portion; and a self-lubricating sealing ring layer, which covers the outer peripheral wall of the sealing ring skeleton, and the self-lubricating sealing ring layer contacts and seals with the inner peripheral wall of the inner cavity; or the sealing ring includes: a sealing ring skeleton, which is fitted over the side portion, and the outer peripheral wall of the sealing ring skeleton has a plurality of filling holes radially inwardly formed; and a self-lubricating filler, which fills the filling holes, and the self-lubricating filler contacts and seals with the inner peripheral wall of the inner cavity.

[0015] Furthermore, the sealing ring has multiple shaft holes on the side near the sealing strip, and the shaft holes are arranged at equal intervals around the center of the sealing ring; the end of the sealing strip skeleton extends outward and is provided with a shaft head that is inserted and connected to the shaft holes; a pressure plate is provided on the side of the sealing ring away from the sealing strip, and the pressure plate is fixed to the outer side of the side by fasteners, and the pressure plate part abuts against the outer side wall of the sealing ring.

[0016] Furthermore, when the sealing strip adopts the self-lubricating sealing layer and sealing strip skeleton connection method, the sealing strip skeleton has multiple connecting holes along its length, and the self-lubricating sealing layer is injected into the connecting holes.

[0017] Furthermore, the housing assembly includes a main housing and side covers disposed on both sides of the main housing, and the main shaft is rotatably disposed at the housing assembly; the side cover has a sealing seat and a support seat; an inner shaft end sealing mechanism is disposed between the sealing seat and the main shaft, and the sealing seat is sealed to the main housing; an outer shaft end sealing mechanism is disposed between the support seat and the main shaft, wherein the outer shaft end sealing mechanism is located outside the inner shaft end sealing mechanism, and a heat dissipation opening communicating with the outside is formed between the sealing seat and the support seat.

[0018] Furthermore, the housing assembly includes a main housing and side covers disposed on both sides of the main housing; the side covers are provided with connecting ears extending radially outward; the main housing is provided with a guide hole axially penetrating through at a corresponding position; the guide post passes through the connecting ears and guide holes on the corresponding side covers and is connected by a locking member to detachably connect the two side covers and the main housing.

[0019] The beneficial effects of this utility model are as follows: This utility model is a gas-material isolation valve. By setting a sealing strip and a sealing ring to abut against the inner circumferential wall of the inner cavity to form a "shaft-hole fit" self-lubricating seal, the sealing strip and sealing ring abut against the inner circumferential wall of the inner cavity without pre-pressure. The seal is formed by the outer circumferential surface of the sealing strip and sealing ring and the inner circumferential wall of the inner cavity to form a shaft-hole type rotary fit, which improves the sealing performance. Under this working condition, there is no wear on the sealing strip, sealing ring and the inner circumferential wall of the inner cavity during operation, which increases the service life of the equipment and significantly reduces the amount of equipment maintenance. Moreover, while improving the sealing performance at the conveying trough, it also increases the service life of the sealing components (sealing strip and sealing ring), reduces the number of times the processing equipment is shut down due to the replacement of sealing components, and improves the production efficiency of materials. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a cross-sectional view of the gas-fuel isolation valve;

[0022] Figure 2It is a diagram showing the fit between the flange, sealing strip, and sealing ring;

[0023] Figure 3 yes Figure 2 The left view in the middle;

[0024] Figure 4 yes Figure 3 Enlarged view of point A in the image;

[0025] Figure 5a This is a side sectional view of a sealing strip. Figure 5b This is a front sectional view of this type of sealing strip. Figure 5c This is a front sectional view of the sealing strip skeleton in this type of sealing strip;

[0026] Figure 6a This is a front view of a sealing ring. Figure 6b This is a cross-sectional view of this type of sealing ring;

[0027] Figure 7a This is a side sectional view of another type of sealing strip. Figure 7b This is a front sectional view of this type of sealing strip. Figure 7c This is a front sectional view of the sealing strip skeleton in this type of sealing strip;

[0028] Figure 8a This is a front view of another type of sealing ring. Figure 8b This is a cross-sectional view of this type of sealing ring;

[0029] Figure 9 This is a side view of the gas-fuel isolation valve;

[0030] Figure 10 yes Figure 9 Sectional view along the AA direction. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0032] To improve the service life of the sealing components and facilitate their rapid replacement, this solution provides the following embodiments.

[0033] See Figure 1This is a cross-sectional view of a gas-feed isolation valve. In the figure, the housing assembly 01 includes: a main housing 1 and two side covers 7. The main housing 1 has an inner cavity 14 and a material inlet communicating with the inner cavity 14. The material inlet facing upwards at the top of the main housing 1 is the feed inlet 11, and the material inlet facing downwards at the bottom of the main housing 1 is the discharge outlet 12. A main shaft 2 is horizontally rotatably arranged inside the main housing 1. Side covers 7 are arranged on the left and right sides of the main housing 1. The main shaft 1 is connected to the spindle portion 31 of the star rotor body 3. The star rotor body 3 also includes a web plate 4 and a side portion 16. Multiple conveying grooves 15 are radially opened inwards on the outer peripheral wall of the star rotor body 3. The conveying groove 15 is formed by two adjacent web plates 3 and the side portions 16 on the left and right sides, forming an opening 1. The groove structure facing the inner wall of the inner cavity 14 has sealing rings 6 on both sides 16. The side plate 4 near the inner wall of the inner cavity 14 has a sealing strip 4 with a roughly straight structure. When the top surface of the conveying trough 15 contacts the inner wall of the inner cavity 14, the sealing rings 6 and sealing strip 4 are in a sealed state, which can prevent the leakage of heat and pressure in the processing equipment. When the conveying trough 15 rotates with the main shaft 1 until the opening 15A is connected to the feed port 11, the material can enter the conveying trough 15. As the main shaft 1 rotates, when the opening 15A of the conveying trough 15 is connected to the discharge port 12, the material can fall from the conveying trough 15 into the processing equipment through the discharge port 12 due to its own weight.

[0034] In this embodiment, since both the sealing ring 6 and the sealing strip 5 are self-lubricating components and are in contact with the inner circumferential wall of the inner cavity 14, the service life of the sealing ring 6 and the sealing strip 5 is extended while ensuring the sealing performance of the conveying groove 15, thus improving the use of the sealing assembly.

[0035] Figure 2 This is a diagram showing the fit between the web plate 4, the sealing ring 6, and the sealing strip 5. Each web plate 4 is equipped with a sealing strip 5. The sealing strip 5 is connected to the web plate 4 via a self-locking assembly. The self-locking assembly can be achieved by using dovetail joints, dovetail grooves, or T-slots, T-shaped parts, etc., with insertion grooves 4A and insertion parts 51A. In order to limit the left and right position of the sealing strip 5, the sealing ring 6 is set on the left and right sides of multiple web plates 4, so that the sealing strip 5 will not move left and right relative to the web plate 4.

[0036] Figure 2 The installation position of the sealing ring 6 is also shown. The sealing ring 6 is set on the left and right sides of the sealing strip 5. The shaft hole 611 on the sealing ring 6 is inserted into the end protruding shaft head 512 at both ends of the sealing strip skeleton 51 in the sealing strip 5. A pressure plate 62 is provided on the outside of the seal 6. The upper part of the pressure plate 62 abuts against the outside of the sealing ring 6, and the lower part of the pressure plate 62 is fixed to the outside of the side part 16 by the locking member 63. Due to the cooperation of the shaft hole 611 and the shaft head 512, the radial outward movement of the sealing strip 5 relative to the web plate 4 can be restricted.

[0037] Of course, in another embodiment not shown, the self-locking assembly can be fixedly connected between the sealing strip 5 and the plate 4 by adhesive bonding or by locking the connection with a locking member. In this way, the sealing ring 6 does not need to limit the left and right positions of the sealing strip 5, and there is no need for the shaft hole 611 on the sealing ring 6, nor is there a need to set the shaft head 512 at the sealing strip 5.

[0038] Figure 3 yes Figure 2 The left view shows that the star rotor body 3 includes a spindle part 31, and a web plate 4 is provided on the radially outward extension of the spindle part 31. A sealing strip 5 is provided on the outer side of each web plate 4, and the same end of all sealing strips 5 is limited by the same sealing ring 6.

[0039] Figure 4 yes Figure 3 The enlarged view at point A in the figure shows that the top of the sealing strip skeleton 51 is provided with a self-lubricating sealing layer 52. The lower part of the sealing strip skeleton 51 is inserted and connected to the web plate 4 in the form of dovetail tenons and dovetail grooves. In this way, the sealing strip skeleton 51 can move along the length of the dovetail groove and connect with the web plate 4. Thus, when replacing the sealing strip 5, it is only necessary to remove the locking part 63 and the pressure plate 62, and pull out the sealing strip 5 perpendicular to the paper surface to achieve quick replacement of the sealing strip 5.

[0040] In some possible embodiments, Figure 5a This is a side sectional view of a sealing strip. Figure 5b This is a front sectional view of the sealing strip. The top of the sealing strip skeleton 51 is covered with a self-lubricating sealing layer 52. The sealing strip skeleton 51 is made of metal and can support the self-lubricating sealing layer 52 to prevent excessive deformation of the self-lubricating sealing layer 52. The self-lubricating sealing layer 52 is made of a non-metallic material with self-lubricating properties, such as Peek. The self-lubricating sealing layer 52 makes self-lubricating contact and seals with the inner wall of the main housing 1. In this type of sealing strip 5, the sealing strip skeleton 51 is connected to the self-lubricating sealing layer 52 as an insert through injection molding. The injection molding method improves the service life of the sealing strip 5.

[0041] Figure 5c This is a front sectional view of the sealing strip skeleton 51 in this type of sealing strip 5. The sealing strip skeleton 51 has a connecting hole 54. The connecting hole 54 further improves the bonding force between the sealing strip skeleton 51 and the self-lubricating sealing layer 52.

[0042] In some possible embodiments, Figure 6a This is a front view of a sealing ring. Figure 6bThis is a cross-sectional view of the sealing ring; the sealing ring 6 has positioning grooves 611 evenly spaced around its circumference; the sealing ring 6 includes a sealing ring skeleton 612 and a self-lubricating sealing ring layer 613, and the connection method of the sealing ring skeleton 612 and the self-lubricating sealing ring layer 613 is consistent with the connection method of the sealing strip skeleton 51 and the self-lubricating sealing layer 52.

[0043] In this embodiment, the sealing ring 6 also performs self-lubricating sealing with the inner wall of the main housing 1, resulting in better sealing effect and longer service life.

[0044] In some possible embodiments, Figure 7a This is a side sectional view of another type of sealing strip. Figure 7b This is a front sectional view of this type of sealing strip. Figure 7c This is a cross-sectional view of the sealing strip skeleton 51 of this type of sealing strip. In the figure, the sealing strip skeleton 51 has filling holes 511 that are evenly spaced downward at the top. The sealing strip skeleton 51 is made of soft metal material (such as tin bronze). The self-lubricating filler 53 is made of non-metallic material with self-lubricating properties (such as powder metallurgy material). The self-lubricating filler 53 is pressed into the filling holes 511 and makes contact with the main housing 1 for sealing. The sealing strip skeleton 51 and the self-lubricating filler 53 are combined by pressing to improve the service life of the sealing strip 5.

[0045] Figure 8a This is a front view of another type of sealing ring. Figure 8b This is a cross-sectional view of the sealing ring; the sealing ring 6 has positioning grooves 611 evenly spaced around its circumference; the sealing ring 6 includes a sealing ring skeleton 612 and a self-lubricating filler 614, the self-lubricating filler 614 is pressed into the filling hole of the sealing ring skeleton 612, and the combination of the two is consistent with the combination of the sealing strip skeleton 51 and the self-lubricating filler 53.

[0046] In this embodiment, the sealing ring 6 also performs self-lubricating sealing with the inner wall of the main housing 1, resulting in better sealing effect and longer service life.

[0047] In conventional gas-feed isolation valves, the end of the main shaft is rotatably connected to the side cover via a bearing. One side of the bearing is in direct contact with the internal working space of the gas-feed isolation valve. The high temperature and high pressure environment shortens the bearing's lifespan. To improve the bearing's service life, in some possible embodiments, such as... Figure 1As shown, the side cover 7 has a sealing seat 71 and a support seat 72; the sealing seat 71 is located inside the support seat 72; an inner shaft end sealing mechanism 8 is provided between the sealing seat 71 and the main shaft 2. The inner shaft end sealing mechanism 8 is a conventional mechanism and will not be described in this application. The sealing seat 71 is sealed to the main housing 1; an outer shaft end sealing mechanism 9 is provided between the support seat 72 and the main shaft 2, wherein the outer shaft end sealing mechanism 9 is located outside the inner shaft end sealing mechanism 8. The outer shaft end sealing mechanism 9 includes a bearing 91, which is disposed between the main shaft 2 and the support seat 72; a heat dissipation opening 10 communicating with the outside is formed between the sealing seat 71 and the support seat 72; Figure 9 As shown, Figure 9 This is a side view of the gas-fuel isolation valve. The support seat 72 is located on the outer side perpendicular to the plane of the paper, and the sealing seat 71 is located on the inner side perpendicular to the plane of the paper. A heat dissipation opening 10 is formed between the support seat 72 and the sealing seat 71.

[0048] With this side cover 7, the bearing 91 is located outside the bearing cavity, avoiding damage to the bearing 91 due to the high temperature and high pressure working environment; in addition, the bearing 91 is connected to the outside, so even if the heat generated by the device is transferred to the bearing through the air or the spindle, the temperature at the bearing is still room temperature, thus extending the service life of the bearing.

[0049] To achieve rapid heat dissipation and facilitate quick replacement of the sealing strip, in some possible embodiments, such as Figure 10 As shown, Figure 9 A cross-sectional view of AA shows that the side cover 7 extends radially outward and is provided with connecting ears 74; as shown in the figure. Figure 10 The diagram shows a sectional view of the gas-fuel isolation valve, the main housing, and the guide post in an oblique orientation. The main housing 1 has an axially penetrating guide hole 13. The guide post 73 passes through two connecting ears 74 and the guide hole 73 and is connected by a locking device to fix the two side covers 7 and the main housing 1 together. The locking device can be a combination of a locking nut, a flat washer, a spring washer, and a snap ring to connect the guide post 73 and the connecting ears 74.

[0050] In this embodiment, when it is necessary to dissipate heat from the gas-fuel isolation valve or to replace the self-lubricating packing, the locking parts are disassembled, the guide post 73 is pulled out horizontally, and the side cover 7 is separated from the main housing 1. At this time, the main housing 1 is not in a sealed state, thus achieving heat dissipation of the gas-fuel isolation valve. At this time, the main shaft can also be pulled out to replace the self-lubricating packing on the main shaft.

[0051] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A steam isolation valve, characterized by The shell assembly (01) has an inner cavity (14) and two material ports respectively located on the upper and lower sides of the inner cavity (14), one of which is a feeding port (11) and the other is a discharging port (12). The star-shaped rotor body (3) has a core shaft part (31), a plurality of webs (4) spaced apart along the circumference of the core shaft part (31), and two side edge parts (16) respectively located at both ends of the core shaft part (31), and a conveying groove (15) with an open side (15A) is enclosed between the two side edge parts (16) and the adjacent two webs (4), and the opening (15A) of the conveying groove (15) faces the inner circumferential wall of the inner cavity (14). The side edge part (16) is provided with a sealing ring (6), and each web (4) is provided with a sealing strip (5) on the side close to the inner circumferential wall of the inner cavity (14), and the sealing ring (6) and the sealing strip (5) are self-lubricating and in contact with the inner circumferential wall of the inner cavity (14). The openings (15A) of the material grooves can be aligned with the material ports as the star-shaped rotor body (3) rotates, and the material ports and the openings (15A) aligned therewith are in communication. The sealing strip (5) comprises:

2. A steam isolation valve according to claim 1, wherein A sealing strip skeleton (51) connected to the side of the web (4) close to the inner circumferential wall of the inner cavity (14); And a self-lubricating sealing layer (52) covering the sealing strip skeleton (51) along the length direction of the sealing strip skeleton (51), the self-lubricating sealing layer (52) being in contact with the inner circumferential wall of the inner cavity (14). The sealing strip (5) comprises:

3. A steam isolation valve according to claim 1, wherein A sealing strip skeleton (51) connected to the side of the web (4) close to the inner circumferential wall of the inner cavity (14), and a plurality of filler holes (511) are formed in the length direction of the side of the sealing strip skeleton (51) close to the inner circumferential wall of the inner cavity (14); And a self-lubricating filler (53) filled in the filler hole (511), the self-lubricating filler (53) being in contact with the inner circumferential wall of the inner cavity (14). The side of the sealing strip skeleton (51) close to the web (4) is provided with a plug-in part (51A) extending in the length direction thereof, and the side of the web (4) close to the sealing strip skeleton (51) is provided with a plug-in groove (4A) matched with the plug-in part; the plug-in part (51A) is movably plugged into the plug-in groove (4A) along the length direction of the web (4).

4. A vapour barrier valve according to claim 2 or 3, wherein, The plug-in groove (4A) is a dovetail groove or a T-shaped cross section.

5. A vapour barrier valve according to claim 4, wherein, The sealing ring (6) comprises:

6. A vapour barrier valve according to claim 2 or 3, wherein the valve is a valve of the type shown in Figure 1. A sealing ring skeleton (612) sleeved on the outer circumferential wall of the side edge part (16); And a self-lubricating sealing ring layer (613) covering the outer circumferential wall of the sealing ring skeleton (612), the self-lubricating sealing ring layer (613) being in contact with the inner circumferential wall of the inner cavity (14); Or the sealing ring comprises: a sealing ring skeleton (612) sleeved on the outer circumferential wall of the side edge part (16), and a plurality of filling holes are formed in the outer circumferential wall of the sealing ring skeleton (612) radially inward. ​ And a self-lubricating filler (614) is filled in the filling hole, and the self-lubricating filler (614) is in contact sealing with the inner wall of the inner cavity (14).

7. A vapour barrier valve according to claim 6, wherein, A plurality of shaft holes (611) are formed in one side of the sealing ring (6) close to the sealing strip (5), and the shaft holes (611) are arranged at equal intervals around the center of the sealing ring (6); and the end of the sealing strip skeleton (51) is provided with an axle head (512) inserted and connected with the shaft hole (611) outwardly. A pressing plate (62) is arranged on the side of the sealing ring (6) away from the sealing strip (5), the pressing plate (62) is fixed on the outer side of the side edge (16) through a fastener (63), and the pressing plate (62) is in abutment with the outer side wall of the sealing ring (6).

8. A steam isolation valve according to claim 2, wherein, A plurality of combination holes (54) are formed in the sealing strip skeleton (51) along the length direction, and a self-lubricating sealing layer (52) is injection molded in the combination holes (54).

9. The vapor lock valve of claim 1, wherein, The shell assembly (01) comprises a main shell (1) and side covers (7) arranged on both sides of the main shell (1), and a main shaft (2) is rotatably arranged at the shell assembly (01); The side cover (7) has a sealing seat (71) and a supporting seat (72); An inner shaft end sealing mechanism (8) is arranged between the sealing seat (71) and the main shaft (2), and the sealing seat (71) is sealingly connected with the main shell (1); An outer shaft end sealing mechanism (9) is arranged between the supporting seat (72) and the main shaft (2), wherein the outer shaft end sealing mechanism (9) is located outside the inner shaft end sealing mechanism (8), and the sealing seat (71) and the supporting seat (72) form a heat dissipation opening (10) in communication with the outside.

10. The vapor lock valve of claim 1, wherein, The shell assembly (01) comprises a main shell (1) and side covers (7) arranged on both sides of the main shell (1); The side cover (7) is provided with a connecting lug (74) extending radially outward, the main shell (1) is provided with a guide hole (13) axially penetrating the corresponding position, and a guide column (73) penetrates the connecting lug (74) and the guide hole (13) on the side cover (7) and is connected by a locking member, so that the two side covers (7) and the main shell (1) are detachably connected.

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