Diaphragm sealing gas meter, sealing device of diaphragm sealing gas meter and sealing method of diaphragm sealing gas meter

Abstract

The invention belongs to the technical field of gas meter machining, and particularly relates to a diaphragm sealing gas meter and a sealing device of the diaphragm sealing gas meter. The diaphragm sealing gas meter comprises a gas meter shell and a side cover, a diaphragm is arranged on the gas meter shell, the top of the side cover is provided with an adsorption part, the bottom of the side cover is provided with a coating part and an edge part, and the diaphragm and the coating part are sealed through grease. A sealing device of a diaphragm sealing gas meter is used for sealing operation of the diaphragm sealing gas meter and used in cooperation with a continuously-conveyed side cover. According to the diaphragm sealing gas meter in the technical scheme, the coating part on the side cover and the diaphragm of the gas meter are sealed through the grease, and the grease is subjected to one-time bottoming coating, so that the coating part is in primary contact with the grease; through secondary deepened coating of the over-travel, a coating part is in full contact with continuously overflowing grease; and through three times of deepened coating of overtravel, grease at the coating part is uniformly distributed, the contact surface of the coating part and the diaphragm of the gas meter is flat, and the diaphragm sealing gas meter is ensured to have better sealing performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas meter processing, and in particular relates to a diaphragm sealed gas meter, a sealing device of the diaphragm sealed gas meter and a sealing method of the sealing device of the diaphragm sealed gas meter. Background Art

[0002] Gas meters are devices used to measure and record gas consumption in households or industries. They record the amount of gas passing through them. Therefore, in order to measure and record the accuracy of the preparation, gas meters require high sealing properties. During the production of gas meters, grease is required to seal the shell and the diaphragm.

[0003] In the prior art, when the side cover of the gas meter and the diaphragm are sealed by grease, the grease is manually applied to the diaphragm, and then the side cover of the gas meter and the diaphragm are aligned and assembled with the gas meter housing. This grease application method has the problem of poor coating consistency and poor matching between the applied grease and the gas meter housing and the diaphragm assembly position, which affects the sealing of the gas meter.

[0004] In view of the above problems, a diaphragm-sealed gas meter, a sealing device for a diaphragm-sealed gas meter and a sealing method for the sealing device for a diaphragm-sealed gas meter are designed. Summary of the invention

[0005] The present invention aims at solving the problems in the prior art and proposes the following technical solutions: A diaphragm sealed gas meter comprises a gas meter housing and a side cover, wherein the gas meter housing is provided with a diaphragm, the top of the side cover has an adsorption portion, the bottom has a coating portion and a side portion, and the diaphragm and the coating portion are sealed by grease.

[0006] The sealing device of the diaphragm sealed gas meter is used for the sealing operation of the diaphragm sealed gas meter and is used in conjunction with the side cover of the continuous delivery. The sealing device includes: The pressing mechanism includes a transverse moving module, a longitudinal moving module arranged at the output end of the transverse moving module, and an adsorbent arranged at the output end of the longitudinal moving module. The adsorbent matches the adsorption part. The longitudinal moving module is arranged as two parallel distributed in the length direction of the transverse moving module. The transverse moving module drives the longitudinal moving module and the adsorbent to move back and forth at a fixed distance between the feeding side and the discharging side. The longitudinal moving module drives the adsorbent to move back and forth in the height direction. A lower mold mechanism is arranged below the pressing mechanism, the lower mold mechanism comprises a coating platform, a grease outlet pipe connected end to end is arranged on the upper end surface of the coating platform, the grease outlet pipe matches the coating part, a plurality of micro-holes are arranged on the upper end surface of the grease outlet pipe, and grease continuously overflows from the micro-holes on the grease outlet pipe; A temporary storage mechanism is arranged in parallel on the discharge side of the lower mold mechanism, the middle part of the temporary storage mechanism is concave to form a storage cavity, and the distance between the lower mold mechanism and the temporary storage mechanism is consistent with the distance between the two adsorbents; When the side cover is located at the feeding side of the lower mold mechanism, it is A, A is the feeding position; when it is located at the lower mold mechanism, it is B, B is the coating position; when it is located at the temporary storage mechanism, it is C, C is the discharging position; the continuously transported side cover is transported to the feeding position, the feed side adsorption piece adsorbs the side cover at the feeding position to move to the discharging side to the coating position, and contacts with the grease continuously overflowing on the coating platform for coating operation, and the discharging side adsorption piece adsorbs the side cover at the coating position to move to the discharging side to the discharging position.

[0007] As a preferred embodiment of the above technical solution, the lower mold mechanism further includes a fat delivery member and a blocking plate which are sequentially assembled below the coating platform; A through groove is provided at the position covered by the grease outlet tube on the coating platform, and the grease outlet tube is connected with the through groove; A material delivery hole is provided at the middle of the lower end of the fat delivery member, and a main body material delivery cavity and an ear material delivery cavity are provided on the fat delivery member, the main body material delivery cavity and the ear material delivery cavity penetrate the fat delivery member in the longitudinal direction, and are connected to the fat outlet pipe through the through groove, and a plurality of material delivery paths are provided between the main body material delivery cavity and the material delivery hole; The middle part of the blocking plate is equipped with a tube body, which is inserted into the inside of the feed hole. The blocking plate blocks the lower end of the fat feeding piece, and the feed hole, the feed path, the main body feed cavity and the ear feed cavity form a closed delivery cavity.

[0008] As a preferred embodiment of the above technical solution, the lower end side wall of the fat transport component extends downward to form a cavity for accommodating the sealing plate, a sealing ring is arranged between the sealing plate and the cavity, a sealing groove is opened on the top wall of the cavity, and the upper part of the sealing ring is located inside the sealing groove.

[0009] As a preferred embodiment of the above technical solution, the head end and the tail end of the ear feed cavity are both connected to the main body feed cavity, and a block is provided in the main body feed cavity in the area between the head end and the tail end of the ear feed cavity.

[0010] As a preferred embodiment of the above technical solution, the fat delivery member and the coating platform are connected by a plurality of elastic connecting members; The elastic connecting member comprises an internal threaded sleeve connected to the fat delivery member, a screw is threadedly connected in the internal threaded sleeve, and the upper end of the screw movably penetrates the coating platform and then radially extends to form a side plate.

[0011] As a preferred embodiment of the above technical solution, an installation cavity is opened at the upper end of the screw rod, and at least one edge is arranged on the inner wall of the installation cavity. A top column is slidingly inserted in the installation cavity, and a spring is arranged between the top column and the installation cavity. The top column is located within the coverage range of the edge.

[0012] As a preferred embodiment of the above technical solution, the middle portion of the adsorption portion is a concave adsorption plane, and the adsorption component is adsorbed and cooperated with the adsorption plane.

[0013] As a preferred embodiment of the above technical solution, the lower mold mechanism also includes a limiter, and a longitudinally distributed middle cavity and a accommodating cavity are arranged in the middle of the limiter, the coating platform is located inside the middle cavity, and the fat delivery component is located inside the accommodating cavity.

[0014] The sealing method of the sealing device of the diaphragm sealed gas meter according to any one of the above items comprises the following steps; S1.1 Loading preparation: The continuously conveyed side cover is conveyed to the feeding position, the transverse movement module drives the adsorption member to move to the feeding side to the top of the side cover of the feeding position, the longitudinal movement module drives the adsorption member to move downward until the adsorption member on the feeding side adsorbs the side cover of the feeding position, and the longitudinal movement module drives the adsorption member to reset upward; at the same time, S1.2 Discharging preparation: The transverse moving module drives the adsorbent to move toward the feeding side, and the longitudinal moving module drives the adsorbent to move downward until the adsorbent on the discharging side adsorbs the side cover of the coating position, and the longitudinal moving module drives the adsorbent to reset upward; S2.1 One-time primer coating: The transverse movement module drives the adsorbent to move toward the discharge side until the adsorbent on the feed side moves to above the coating position, and the longitudinal movement module drives the adsorbent downward until the side cover contacts the grease outlet pipe that continuously overflows grease; at the same time, S2.2 Standing: The transverse movement module drives the adsorption member to move toward the discharge side until the adsorption member on the discharge side moves above the discharge position, and the longitudinal movement module drives the adsorption member to move downward until the side cover contacts the storage chamber; S3.1 Secondary deepening of coating: The longitudinal movement module drives the adsorption part to continue to move downward to press the side cover of the coating position, squeezing the continuously overflowing grease until it is fully in contact; at the same time, S3.2 Three times of deepening coating: the longitudinal movement module drives the adsorbent to continue to move downward to press the side cover of the discharge position until the coated grease is evenly distributed on the coating part; S4. Discharging: The external manipulator mechanism takes out the grease-coated side cover from the discharging position and assembles it with the gas meter housing with the diaphragm.

[0015] The beneficial effects of the present invention are: 1. In the diaphragm-sealed gas meter of the present technical solution, the coating portion on the side cover and the gas meter diaphragm are sealed by grease, and the grease molecules enter the rough surface between the diaphragm and the side cover and fill the gap, so that air cannot pass through the gap, thereby achieving sealing.

[0016] The grease is coated once as a primer, so that the coated part is initially in contact with the grease; the grease is coated twice with an overstroke, so that the coated part is fully in contact with the continuously overflowing grease; the grease is coated three times with an overstroke, so that the grease at the coated part is evenly distributed and the contact surface with the gas meter diaphragm is flat, ensuring that the diaphragm-sealed gas meter has good sealing performance.

[0017] 2. In the sealing device of a diaphragm-sealed gas meter in the present technical solution, when the side cover is in the coating position, a primer coating is performed, so that the coating part is initially in contact with the grease; a secondary deepening coating is performed for overstroke, so that the coating part is fully in contact with the continuously overflowing grease; when the side cover is in the discharge position, a tertiary deepening coating is performed for overstroke, so that the grease at the coating part is evenly distributed and the contact surface with the gas meter diaphragm is flat; and the grease outlet pipe for continuous grease outlet is matched with the coating part, so that the coated grease is highly matched with the diaphragm and the side cover assembly position, thereby ensuring the sealing of the gas meter.

[0018] A sealing device for a diaphragm-sealed gas meter in the technical solution realizes the automation of grease coating on the side covers, and the coating consistency between multiple side covers is high and the coating is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of the side cover structure of a diaphragm sealed gas meter; Figure 2 What is shown is a schematic diagram of the diaphragm structure of a diaphragm sealed gas meter; Figure 3 The structure diagram of the sealing device of the diaphragm-sealed gas meter in Example 1 is shown; Figure 4 It is shown that Figure 3 A schematic diagram of the partial structure of the sealing device of the middle diaphragm sealed gas meter; Figure 5 It is shown that Figure 4 A cross-sectional schematic diagram of a sealing device of a medium diaphragm sealed gas meter; Figure 6 It shows a schematic diagram of the structure of the coating platform in the sealing device of the diaphragm-sealed gas meter in Example 1; Figure 7 The diagram shows the structure of the grease conveying member in the sealing device of the diaphragm-sealed gas meter in Example 1; Figure 8 The figure shows the bottom structural diagram of the grease conveying member in the sealing device of the diaphragm-sealed gas meter in Example 1; Fig. 9 What is shown is a schematic structural diagram of an elastic connector in a sealing device of a diaphragm-sealed gas meter in Example 1.

[0020] Reference numerals: 10, pressing mechanism; 11, transverse moving module; 12, longitudinal moving module; 13, adsorption member; 20. Lower mold mechanism; 21. Grease delivery part; 211. Cavity; 212. Material delivery hole; 213. Main material delivery cavity; 214. Material delivery path; 215. Ear material delivery cavity; 216. Block; 217. Sealing groove; 22. Coating platform; 221. Grease outlet pipe; 222. Micropore; 223. Through groove; 23. Blocking plate; 231. Tube body; 232. Sealing ring; 24. Elastic connector; 241. Internal threaded sleeve; 242. Screw; 243. Side plate; 244. Installation cavity; 245. Spring; 246. Top column; 25. Limiting part; 251. Middle cavity; 252. Accommodating cavity; 30. side cover; 31. adsorption part; 32. coating part; 33. edge part; 40. Temporary storage mechanism; 41. Storage chamber. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Example 1

[0022] like Figure 1 , Figure 2 As shown, the diaphragm sealed gas meter includes a gas meter housing and a side cover 30. A diaphragm is arranged on the gas meter housing, and the gas meter housing is not shown in the figure. The top of the side cover 30 has an adsorption portion 31, the bottom has a coating portion 32 and a side portion 33, and the diaphragm and the coating portion 32 are sealed by grease.

[0023] In the diaphragm-sealed gas meter of the present technical solution, the coating portion 32 on the side cover 30 and the gas meter diaphragm are sealed by grease. The grease molecules enter the rough surface between the diaphragm and the side cover 30 and fill the gap, so that air cannot pass through the gap, thereby achieving sealing.

[0024] After the grease is primed once, the coating portion 32 makes initial contact with the grease on the coating platform 22; after the secondary deep coating with overstroke, the coating portion 32 makes full contact with the continuously overflowing grease; after the tertiary deep coating with overstroke, the grease at the coating portion 32 is evenly distributed and the contact surface with the gas meter diaphragm is flat, ensuring that the diaphragm-sealed gas meter has good sealing performance.

[0025] like Figure 1 , Figure 3 , Figure 4 , Figure 5, Figure 6 As shown, the sealing device of the diaphragm sealed gas meter is used for the sealing operation of the diaphragm sealed gas meter and is used in conjunction with the side cover 30 of continuous delivery. The sealing device includes: The pressing mechanism 10 includes a transverse moving module 11, a longitudinal moving module 12 arranged at the output end of the transverse moving module 11, and an adsorbent 13 arranged at the output end of the longitudinal moving module 12, wherein the adsorbent 13 adopts the negative pressure adsorption method in the prior art, which will not be described in detail here. The output end of the longitudinal moving module 12 is connected to the adsorbent 13 through an extension plate, so that the adsorbent 13 is located above the lower mold mechanism 20, and the adsorbent 13 matches the adsorption part 31. The longitudinal moving module 12 is arranged as two parallel distributed in the length direction of the transverse moving module 11. The transverse moving module 11 drives the longitudinal moving module 12 and the adsorbent 13 to reciprocate and move at a fixed distance between the feeding side and the discharging side, and the longitudinal moving module 12 drives the adsorbent 13 to reciprocate in the height direction; The lower mold mechanism 20 is arranged below the pressing mechanism 10, and the lower mold mechanism 20 includes a coating platform 22. A grease outlet pipe 221 connected end to end is arranged on the upper end surface of the coating platform 22. The grease outlet pipe 221 matches the coating part 32. A plurality of micropores 222 are arranged on the upper end surface of the grease outlet pipe 221, and grease continuously overflows from the micropores 222 on the grease outlet pipe 221. The temporary storage mechanism 40 is arranged in parallel on the discharge side of the lower mold mechanism 20, and the middle part of the temporary storage mechanism 40 is concave to form a storage cavity 41, and the side cover 30 is located inside the storage cavity 41, so as to improve the stability of the contact between the side cover 30 and the end face of the temporary storage mechanism 40, and avoid the situation that the friction between the side cover 30 and the temporary storage mechanism 40 is reduced due to the coating of grease, and the side cover 30 is more likely to be displaced. The distance between the lower mold mechanism 20 and the temporary storage mechanism 40 is consistent with the distance between the two adsorbents 13; wherein, in order to further optimize the coating effect of grease, the storage cavity 41 has elastic deformation ability, and the side cover 30 is located inside the storage cavity 41. When the adsorbent 13 presses the side cover 30, the storage cavity 41 is deformed by force and is more closely fitted with the coating part 32. More grease in the local position is squeezed and dispersed, and at the same time, the grease adhering to the surface of the storage cavity 41 can also fully contact with the coating part 32 to supplement the coating dead angle.

[0026] When the side cover 30 is located at the feeding side of the lower mold mechanism 20, it is A, A is the feeding position; when it is located at the lower mold mechanism 20, it is B, B is the coating position; when it is located at the temporary storage mechanism 40, it is C, C is the discharging position; the continuously transported side cover 30 is transported to the feeding position, and the feed side adsorption part 13 adsorbs the side cover 30 at the feeding position and moves to the discharging side to the coating position, and contacts with the grease continuously overflowing from the coating platform 22 for coating operation, and the discharging side adsorption part 13 adsorbs the side cover 30 at the coating position and moves to the discharging side to the discharging position.

[0027] A sealing method for a sealing device of a diaphragm-sealed gas meter comprises the following steps; S1.1 Loading preparation: The continuously conveyed side cover 30 is conveyed to the feeding position, the transverse movement module 11 drives the adsorption member 13 to move to the feeding side to the top of the side cover 30 of the feeding position, the longitudinal movement module 12 drives the adsorption member 13 to move downward, until the adsorption member 13 on the feeding side adsorbs the side cover 30 of the feeding position, and the longitudinal movement module 12 drives the adsorption member 13 to reset upward; at the same time, S1.2 Discharging preparation: the transverse moving module 11 drives the adsorbent 13 to move toward the feeding side, and the longitudinal moving module 12 drives the adsorbent 13 to move downward, until the adsorbent 13 on the discharging side adsorbs the side cover 30 at the coating position, and the longitudinal moving module 12 drives the adsorbent 13 to reset upward; S2.1 One-time priming coating: The transverse moving module 11 drives the adsorbent 13 to move toward the discharge side until the adsorbent 13 on the feed side moves to above the coating position, and the longitudinal moving module 12 drives the adsorbent 13 to move downward until the side cover 30 contacts the grease outlet pipe 221 from which grease continuously overflows; the grease and the coating part 32 are initially in contact, which is priming; at the same time, S2.2 Standing: The transverse moving module 11 drives the adsorption member 13 to move toward the discharge side until the adsorption member 13 moves above the discharge position, and the longitudinal moving module 12 drives the adsorption member 13 to move downward until the side cover 30 contacts the storage chamber 41; S3.1 Secondary deepening of coating: The longitudinal moving module 12 drives the adsorbent 13 to continue to move downward to press the side cover 30 at the coating position, squeezing the continuously overflowing grease until it is fully contacted; at the same time, S3.2 Three times of deepening the coating: the longitudinal movement module 12 drives the adsorbent 13 to continue to move downward to press the side cover 30 of the material discharge position until the coated grease is evenly distributed on the coating part 32; In step S3 , after the longitudinal moving module 12 drives the side cover 30 to move to the coating position and the material discharging position, the longitudinal moving module 12 continues to move downward to press the side cover 30 , which is an over-travel setting.

[0028] S4. Discharging: The external manipulator mechanism takes out the grease-coated side cover 30 from the discharging position and assembles it with the gas meter housing with the diaphragm.

[0029] In the present technical solution, a sealing device for a diaphragm-sealed gas meter is designed according to the characteristics of the side cover 30 that needs to be coated. The side cover 30 is arranged between the upper and lower pressing mechanism 10 and the lower mold mechanism 20. The transverse movement module 11 and the longitudinal movement module 12 in the pressing mechanism 10 drive the side cover 30 to switch between the feeding position, the coating position, and the discharging position by adsorbing the side cover 30 through the adsorbent 13. When the side cover 30 is in the coating position, the coating part 32 initially contacts the grease on the coating platform 22 to complete a primer coating. The over-travel adsorbent 13 presses the side cover 30 until it is in full contact with the continuously overflowing grease, and performs a secondary deepening coating. When the side cover 30 is switched to the discharging position, the over-travel adsorbent 13 presses the side cover 30 until the grease at the coating part 32 contacts the storage cavity 41 and is squeezed and distributed evenly and flatly, and a third deepening coating is performed.

[0030] In the present technical solution, a sealing device for a diaphragm-sealed gas meter is provided. When the side cover 30 is in the coating position, the coating portion 32 is initially in contact with the grease on the coating platform 22, completing a primary primer coating; when the side cover 30 is in the coating position, the adsorbent 13 presses the side cover 30 until the coating portion 32 is in full contact with the continuously overflowing grease, completing a secondary deepened coating of the overtravel; when the side cover 30 is in the discharge position, the adsorbent 13 presses the side cover 30 until the grease at the coating portion 32 is in contact with the storage cavity 41, being squeezed and evenly distributed, and the contact surface with the gas meter diaphragm is flat, completing a tertiary deepened coating of the overtravel; The grease outlet pipe 221 that continuously discharges grease matches the coating portion 32, so that the coated grease is highly matched with the assembly position of the diaphragm and the side cover 30, thereby ensuring the sealing of the gas meter. The sealing device of the diaphragm-sealed gas meter in the technical solution realizes the automation of grease coating of the side cover 30, and the coating consistency between multiple side covers 30 is high and the coating is uniform.

[0031] Among them, in the pressing mechanism 10, the adsorption member 13 cooperates with the adsorption part 31 to complete the adsorption and fixing of the side cover 30 by negative pressure adsorption, and the lateral movement module 11 drives the side cover 30 to move back and forth between the feeding side and the discharging side at a fixed distance, so that the side cover 30 is switched between the feeding position, the coating position, and the discharging position to complete the loading or unloading; The longitudinal movement module 12 is used to drive the side cover 30 to reciprocate in the up and down directions, and cooperates with the coating platform 22 that continuously discharges grease to complete the coating at the coating part 32 on the side cover 30; wherein, the longitudinal movement module 12 drives the adsorption part 13 to move downward, and during the coating process, the side cover 30 is pressed, which is conducive to the uniform distribution of grease at the coating part 32.

[0032] To achieve the setting requirement of continuous grease discharge on the coating platform 22, such as Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the lower mold mechanism 20 also includes a fat delivery member 21 and a blocking plate 23 which are sequentially assembled below the coating platform 22; a through groove 223 is provided at the position covered by the fat outlet pipe 221 on the coating platform 22, and the fat outlet pipe 221 is connected with the through groove 223; A material delivery hole 212 is provided at the middle of the lower end of the fat delivery member 21. The fat delivery member 21 is provided with a main body material delivery cavity 213 and an ear material delivery cavity 215 which are connected. The main body material delivery cavity 213 and the ear material delivery cavity 215 penetrate the fat delivery member 21 in the longitudinal direction and are connected to the fat outlet pipe 221 through the through groove 223. A plurality of material delivery paths 214 are provided between the main body material delivery cavity 213 and the material delivery hole 212. A tube body 231 is installed in the middle of the sealing plate 23, and the tube body 231 is inserted into the interior of the feed hole 212. The sealing plate 23 blocks the lower end of the fat delivery piece 21, and the feed hole 212, the feed path 214, the main body feed cavity 213 and the ear feed cavity 215 form a closed delivery cavity.

[0033] In the lower mold mechanism 20, the coating platform 22, the fat delivery piece 21 and the sealing plate 23 are assembled in sequence from top to bottom, and the coating platform 22, the fat delivery piece 21 and the sealing plate 23 form a complete fat delivery piece, and the feed hole 212, the feed path 214, the main body feed cavity 213 and the ear feed cavity 215 form a closed delivery cavity; the fat is continuously delivered to the feed hole 212 through the tube body 231, and gradually diffuses into the main body feed cavity 213 and the ear feed cavity 215 through the feed path 214, and then passes through the through groove 223 to the inside of the fat outlet pipe 221, and overflows from the micropore 222.

[0034] The setting of the lower mold mechanism 20 provides continuous overflow of grease for the grease coating of the side cover 30, meeting the grease coating requirements of the side cover 30; wherein, the conveying cavity is arranged to radiate from the middle to the surroundings, so that the overflowed grease is evenly distributed, thereby further ensuring the coating effect.

[0035] In order to prevent the grease from overflowing from the gap between the grease conveying member 21 and the blocking plate 23 during the conveying process, Figure 5 , Figure 7 As shown, the lower end side wall of the fat transport component 21 extends downward to form a cavity 211 for accommodating the sealing plate 23. A sealing ring 232 is arranged between the sealing plate 23 and the cavity 211. A sealing groove 217 is opened on the top wall of the cavity 211, and the upper part of the sealing ring 232 is located inside the sealing groove 217.

[0036] After the coating platform 22, the fat delivery component 21 and the sealing plate 23 are assembled in sequence, the sealing ring 232 is squeezed and deformed between the fat delivery component 21 and the sealing plate 23 to ensure the sealing between the fat delivery component 21 and the sealing plate 23, avoiding changes in the delivery pressure and delivery volume during the grease delivery process, resulting in changes in the grease delivery effect, and further affecting the grease coating effect on the side cover 30.

[0037] To further optimize the fat delivery path and make the continuously overflowing fat more evenly distributed, Figure 8 As shown, the head end and the tail end of the ear feed cavity 215 are connected to the main body feed cavity 213. The shape formed by the connection between the main body feed cavity 213 and the ear feed cavity 215 matches the area to be coated on the coating portion 32. The main body feed cavity 213 is located in the area between the head end and the tail end of the ear feed cavity 215, and a block 216 is provided.

[0038] The grease diffuses in the main body delivery cavity 213 after passing through the delivery path 214, and is intercepted by the block 216, and enters from the head and tail ends of the ear delivery cavity 215 and fills the ear delivery cavity 215, so that both the main body delivery cavity 213 and the ear delivery cavity 215 are fully filled with grease, so that the continuously overflowing grease is evenly distributed, thereby improving the coating effect.

[0039] To achieve the assembly and fixation between the fat delivery member 21 and the coating platform 22, as shown in FIG. Figure 4 , Fig. 9 As shown, the fat delivery component 21 and the coating platform 22 are connected by a plurality of elastic connectors 24; the elastic connector 24 includes an internal threaded sleeve 241 connected to the fat delivery component 21, and a screw 242 is threadedly connected in the internal threaded sleeve 241. The upper end of the screw 242 movably penetrates the coating platform 22 and then radially extends to form a side plate 243.

[0040] When assembling the fat delivery component 21 and the coating platform 22, place the coating platform 22 on the upper end of the fat delivery component 21, pass the screw 242 through the coating platform 22 and threadably engage with the internal threaded sleeve 241, turn the screw 242 to move it downward until the side plate 243 contacts the upper end surface of the coating platform 22, and the relative positions of the fat delivery component 21 and the coating platform 22 are fixed.

[0041] like Fig. 9 As shown, a mounting cavity 244 is provided at the upper end of the screw rod 242, and at least one edge is provided on the inner wall of the mounting cavity 244. The cavity cross-section of the mounting cavity 244 can be set to a rectangular, cross or other shape. A top column 246 is slidingly inserted in the mounting cavity 244, and a spring 245 is provided between the top column 246 and the mounting cavity 244. The top column 246 is located within the coverage range of the edge 33.

[0042] In the elastic connecting member 24, the relative positions of the fat delivery member 21 and the coating platform 22 are changed. When the screw 242 needs to be installed or removed, the top column 246 is pressed into the inside of the installation cavity 244, and an external tool, such as a rectangular head or cross head screwdriver, is inserted into the inside of the installation cavity 244 to drive the screw 242 to rotate, thereby completing the installation and removal of the screw 242.

[0043] In the elastic connector 24, when the adsorbent 13 drives the side cover 30 to move downward continuously, the upper end of the top column 246 contacts the edge 33 and is gradually compressed into the interior of the mounting cavity 244. At this time, the spring 245 is compressed. The arrangement of multiple elastic connectors 24 adjusts the state of the side cover 30 moving downward. If the side cover 30 is in an inclined state, the edge 33 that first contacts the top column 246 is subjected to upward pressure until the edge 33 contacts multiple top columns 246 at the same time, gradually adjusting the inclined state to a horizontal state, thereby fixing the positions of the fat delivery member 21 and the coating platform 22 while keeping the contact surface of the coating portion 32 with the grease flat, further optimizing the coating effect. When the adsorbent 13 drives the side cover 30 to move upward, the compressed spring 245 gives an upward force to the edge 33 of the side cover 30 to avoid the situation where a sealing ring is formed due to the grease at the coating part 32, the resistance to upward movement is increased, and the adsorbent 13 cannot adsorb the side cover 30 to move upward. While fixing the position of the fat delivery part 21 and the coating platform 22, the stability of the adsorption between the adsorbent 13 and the side cover 30 is improved.

[0044] To further optimize the coating and adsorption effects, Figure 1 , Figure 3 As shown, the middle part of the adsorption part 31 is a concave adsorption plane, and the adsorption member 13 is adsorbed and matched with the adsorption plane. The adsorption part 31 and the side cover 30 are arranged at a concave adsorption plane, so that when the adsorption part 31 and the side cover 30 are adsorbed and matched, the side cover 30 remains horizontal, which is conducive to the flat contact surface between the coating part 32 and the grease, and further optimizes the coating effect; The place where the adsorption part 31 and the side cover 30 cooperate is set as a concave adsorption plane, so that when the adsorption part 31 and the side cover 30 are adsorbed and matched, the contact surface between the adsorption part 31 and the side cover 30 is flat, further optimizing the stability of adsorption.

[0045] In order to improve the stability of the side cover 30 inside the lower mold mechanism 20, the friction between the side cover 30 and the coating platform 22 is reduced due to the coating of grease, and the side cover 30 is easily displaced. Figure 4 , Figure 5 As shown, the lower mold mechanism 20 also includes a limit member 25, and a longitudinally distributed middle cavity 251 and a receiving cavity 252 are arranged in the middle of the limit member 25. The coating platform 22 is located inside the middle cavity 251, and the fat delivery member 21 is located inside the receiving cavity 252.

[0046] When the side cover 30 is coated, the side cover 30 is located on the coating platform 22 and inside the middle cavity 251 , and the limiting member 25 limits the position of the side cover 30 to prevent the side cover 30 from being separated from the coating platform 22 and affecting the coating work.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A diaphragm-sealed gas meter, comprising a gas meter housing and a side cover (30), wherein a diaphragm is arranged on the gas meter housing, characterized in that: The side cover (30) has an adsorption portion (31) at the top, a coating portion (32) and a side portion (33) at the bottom, and grease is used to seal the diaphragm and the coating portion (32).

2. A sealing device for a diaphragm-sealed gas meter, used for sealing operation of a diaphragm-sealed gas meter, used in conjunction with a continuously conveying side cover (30), characterized in that: The sealing device includes: A pressing mechanism (10), the pressing mechanism (10) comprising a transverse moving module (11), a longitudinal moving module (12) arranged at an output end of the transverse moving module (11), and an adsorption member (13) arranged at an output end of the longitudinal moving module (12), the adsorption member (13) matching with the adsorption portion (31), the longitudinal moving module (12) being arranged as two arranged in parallel in the length direction of the transverse moving module (11), the transverse moving module (11) driving the longitudinal moving module (12) and the adsorption member (13) to reciprocate at a fixed distance between a feeding side and a discharging side, and the longitudinal moving module (12) driving the adsorption member (13) to reciprocate in a height direction; A lower mold mechanism (20) is arranged below the pressing mechanism (10), the lower mold mechanism (20) comprising a coating platform (22), a grease outlet pipe (221) connected end to end is arranged on the upper end surface of the coating platform (22), the grease outlet pipe (221) matches the coating portion (32), a plurality of micropores (222) are arranged on the upper end surface of the grease outlet pipe (221), and grease continuously overflows from the micropores (222) on the grease outlet pipe (221); a temporary storage mechanism (40) arranged in parallel on the discharge side of the lower mold mechanism (20), the middle portion of the temporary storage mechanism (40) being concave to form a storage cavity (41), and the distance between the lower mold mechanism (20) and the temporary storage mechanism (40) being consistent with the distance between the two adsorption members (13); When the side cover (30) is located on the feeding side of the lower mold mechanism (20), it is A, where A is the feeding position; when it is located at the lower mold mechanism (20), it is B, where B is the coating position; when it is located at the temporary storage mechanism (40), it is C, where C is the discharge position; the continuously transported side cover (30) is transported to the feeding position, the feeding side adsorbing member (13) adsorbs the side cover (30) at the feeding position and moves it toward the discharge side to the coating position, where it contacts the grease continuously overflowing from the coating platform (22) to perform a coating operation, and the discharge side adsorbing member (13) adsorbs the side cover (30) at the coating position and moves it toward the discharge side to the discharge position.

3. The sealing device of the diaphragm-sealed gas meter according to claim 1, characterized in that: The lower mold mechanism (20) further comprises a fat delivery member (21) and a sealing plate (23) which are sequentially assembled below the coating platform (22); A through groove (223) is provided at a position covered by the grease outlet pipe (221) on the coating platform (22), and the grease outlet pipe (221) is connected to the through groove (223); A material delivery hole (212) is provided at the middle of the lower end of the fat delivery member (21); a main body material delivery cavity (213) and an ear material delivery cavity (215) are provided on the fat delivery member (21), the main body material delivery cavity (213) and the ear material delivery cavity (215) penetrate the fat delivery member (21) in the longitudinal direction and are connected to the fat outlet pipe (221) via a through groove (223); a plurality of material delivery paths (214) are provided between the main body material delivery cavity (213) and the material delivery hole (212); A tube body (231) is mounted in the middle of the blocking plate (23), and the tube body (231) is inserted into the interior of the material delivery hole (212). The blocking plate (23) blocks the lower end of the fat delivery piece (21), and the material delivery hole (212), the material delivery path (214), the main body material delivery cavity (213) and the ear material delivery cavity (215) form a closed delivery cavity.

4. The sealing device of the diaphragm-sealed gas meter according to claim 3, characterized in that: The side wall of the lower end of the fat transport member (21) extends downward to form a cavity (211) for accommodating the sealing plate (23); a sealing ring (232) is provided between the sealing plate (23) and the cavity (211); a sealing groove (217) is provided on the top wall of the cavity (211); and the upper part of the sealing ring (232) is located inside the sealing groove (217).

5. The sealing device of the diaphragm-sealed gas meter according to claim 3, characterized in that: The head end and the tail end of the ear feed cavity (215) are both connected to the main body feed cavity (213), and a blocking block (216) is provided in the area of ​​the main body feed cavity (213) between the head end and the tail end of the ear feed cavity (215).

6. The sealing device of the diaphragm-sealed gas meter according to claim 3, characterized in that: The fat delivery component (21) and the coating platform (22) are connected via a plurality of elastic connecting components (24); The elastic connecting member (24) comprises an internally threaded sleeve (241) connected to the fat delivery member (21), a screw rod (242) being threadedly connected to the internally threaded sleeve (241), and an upper end portion of the screw rod (242) movably penetrates the coating platform (22) and then radially extends to form a side plate (243).

7. The sealing device of the diaphragm-sealed gas meter according to claim 6, characterized in that: An installation cavity (244) is provided at the upper end of the screw rod (242), at least one corner edge is provided on the inner wall of the installation cavity (244), a top column (246) is slidably inserted in the installation cavity (244), a spring (245) is provided between the top column (246) and the installation cavity (244), and the top column (246) is located within the coverage range of the edge portion (33).

8. The sealing device of the diaphragm-sealed gas meter according to claim 7, characterized in that: The middle part of the adsorption portion (31) is a concave adsorption plane, and the adsorption component (13) is adsorbed and matched with the adsorption plane.

9. The sealing device of the diaphragm-sealed gas meter according to claim 3, characterized in that: The lower mold mechanism (20) further comprises a limiting member (25), wherein a longitudinally distributed middle cavity (251) and a receiving cavity (252) are arranged in the middle of the limiting member (25), the coating platform (22) is located inside the middle cavity (251), and the fat delivery member (21) is located inside the receiving cavity (252).

10. The sealing method of the sealing device of the diaphragm-sealed gas meter according to any one of claims 2 to 9, characterized in that: The steps include: S1.1 Loading preparation: The continuously conveyed side cover (30) is conveyed to the feeding position, the transverse movement module (11) drives the adsorption member (13) to move toward the feeding side to the position above the side cover (30) at the feeding position, the longitudinal movement module (12) drives the adsorption member (13) to move downward until the adsorption member (13) at the feeding side adsorbs the side cover (30) at the feeding position, and the longitudinal movement module (12) drives the adsorption member (13) to reset upward; at the same time, S1.2 Discharging preparation: the transverse moving module (11) drives the adsorption member (13) to move toward the feeding side, and the longitudinal moving module (12) drives the adsorption member (13) to move downward until the adsorption member (13) on the discharging side adsorbs the side cover (30) at the coating position, and the longitudinal moving module (12) drives the adsorption member (13) to reset upward; S2.1 One-time primer coating: The transverse moving module (11) drives the adsorbent (13) to move toward the discharge side until the adsorbent (13) on the feed side moves to above the coating position, and the longitudinal moving module (12) drives the adsorbent (13) to move downward until the side cover (30) contacts the grease outlet pipe (221) that continuously overflows grease; at the same time, S2.2 Standing: the transverse movement module (11) drives the adsorption member (13) to move toward the discharge side until the adsorption member (13) on the discharge side moves to above the discharge position, and the longitudinal movement module (12) drives the adsorption member (13) to move downward until the side cover (30) contacts the storage chamber (41); S3.1 Secondary deepening of coating: the longitudinal movement module (12) drives the adsorption member (13) to continue to move downward to press the side cover (30) at the coating position, squeezing the continuously overflowing grease until it is fully in contact; at the same time, S3.2 Three times of deepening the coating: the longitudinal movement module (12) drives the adsorption member (13) to continue to move downward to press the side cover (30) of the material discharge position until the coated grease is evenly distributed on the coating portion (32); S4. Discharging: The external manipulator mechanism takes out the grease-coated side cover (30) from the discharging position and assembles it with the gas meter housing with the diaphragm.

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