Filter for gas dispenser

Abstract

The utility model relates to the technical field of gas dispensers, and discloses a gas dispenser filter which comprises a filter shell installed on a gas dispenser, a filter cavity is formed in the filter shell, the right side of the filter cavity is of an opening structure, and the left side of the filter shell fixedly communicates with a gas inlet pipe connector. The right side of the top and the right side of the bottom of the filter shell are fixedly communicated with air outlet pipe joints; and a sealing cover plate is detachably mounted and fixed on the right side wall of the filter shell. Compared with the prior art, the natural gas filling device has the following advantages and effects that impurities in natural gas can be filtered through the filter element, the two gas filling guns can be used for filling the natural gas for two vehicles at the same time, the gas filling efficiency is improved, the impurities adhering to the outer wall of the filter element can be conveniently scraped off, the effect that the filter element can be cleaned without being disassembled is achieved, and the practicability is high. Good air permeability of the filter element is guaranteed, the filtering effect and the filtering efficiency of the filter element are improved, the frequency of cleaning after the filter element is disassembled can be effectively reduced, and operation is easy and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of gas dispensers, and in particular to a filter for a gas dispenser. Background Art

[0002] A gas dispenser is a device that provides fuel to natural gas vehicles and large CNG substation vehicles in the form of compressed natural gas. A filter is usually installed on the natural gas pipeline on the gas dispenser. The filter is usually located in front of the inlet end of the pressure reducing valve or safety valve. A filter element is installed inside the filter to block and filter impurities in the natural gas to prevent impurities from entering the pressure reducing valve or safety valve and affecting its sealing performance.

[0003] In the related art, after the filter for the gas filling machine has been used for a period of time, impurities are easily adhered to the surface of the filter element installed inside the filter, which will cause the air permeability of the filter element to deteriorate, and will affect the filtering effect and filtering efficiency of natural gas. Therefore, it is necessary to regularly disassemble and take out the filter element for cleaning, and then install the cleaned filter element back into the filter. However, the method of disassembling and taking out the filter element for cleaning is cumbersome and troublesome. Therefore, we propose a filter for a gas filling machine to solve the above problem. Utility Model Content

[0004] The purpose of the present application is to provide a filter for a gas filling machine, which can use a filter element to filter impurities in natural gas, can simultaneously use two gas filling guns to fill natural gas for two vehicles respectively, thereby improving the gas filling efficiency, and is convenient for scraping off impurities adhering to the outer wall of the filter element, achieving the effect of cleaning the filter element without removing the filter element, ensuring good air permeability of the filter element, improving the filtering effect and filtering efficiency of the filter element, and thus effectively reducing the number of times the filter element is removed for cleaning, with the effect of simple and convenient operation.

[0005] The above technical objectives of the present application are achieved through the following technical solutions: a filter for a gas filling machine, comprising a filter housing installed on the gas filling machine, a filter chamber is provided in the filter housing, the right side of the filter chamber is an opening structure, the left side of the filter housing is fixedly connected with an air inlet pipe joint, the top right side and the bottom right side of the filter housing are fixedly connected with air outlet pipe joints, a sealing cover plate is detachably mounted and fixed on the right side wall of the filter housing, a connecting seat located in the filter chamber is fixedly mounted on the left side wall of the sealing cover plate, a ventilation chamber with an opening structure on the left side is provided in the connecting seat, and the ventilation Ventilation holes are provided on the top inner wall and the bottom inner wall of the cavity, and a first sealing ring and a second sealing ring are fixedly sleeved on the connecting seat. The first sealing ring is located on the left side of the vent, and the second sealing ring is located on the right side of the vent, and one end of the two air outlet pipe joints is located between the first sealing ring and the second sealing ring. The outer ring of the first sealing ring and the outer ring of the second sealing ring are in sliding sealing contact with the inner wall of the filter cavity. A filter element is detachably installed and fixed on the left side of the connecting seat, and the right side of the filter element is an opening structure and is connected to the ventilation cavity. A cleaning component for scraping impurities adhering to the outer wall of the filter element is provided on the filter housing.

[0006] The present application is further configured as follows: the sealing cover plate is fixedly mounted on the right side wall of the filter housing by a first locking screw.

[0007] The present application is further configured as follows: a connecting ring is fixedly sleeved on the right outer wall of the filter element, and the connecting ring is fixedly mounted on the left side wall of the connecting seat by a second locking screw.

[0008] The present application is further configured as follows: the number of the first sealing ring and the second sealing ring is set to be no less than two.

[0009] The present application is further configured as follows: the inner diameter of the filter element is larger than the diameter of the ventilation cavity.

[0010] The present application is further configured as follows: the cleaning assembly includes a pull rod, a scraper ring and a pull handle, a sliding hole is opened on the left inner wall of the filter chamber, the right end of the pull rod slides through, the scraper ring is fixedly installed on the right end of the pull rod, the scraper ring is sleeved on the filter element, the inner ring wall of the scraper ring is in sliding contact with the outer wall of the filter element, and the pull handle is fixedly installed on the left end of the pull rod.

[0011] The present application is further configured as follows: a third sealing ring is fixedly installed in the sliding hole, and the pull rod is slidably sealed in cooperation with the sliding hole through the third sealing ring.

[0012] The present application is further configured as follows: a guide rod is fixedly mounted on the left inner wall of the filter chamber, and the scraper ring sliding sleeve is arranged on the guide rod.

[0013] The present application is further configured as follows: a drain hole is provided on the top inner wall of the filter chamber, and a plug is installed on the inner thread of the drain hole.

[0014] The present application includes at least one of the following beneficial technical effects:

[0015] 1. The present application connects the air inlet pipe joint to the natural gas delivery soft pipe on the gas filling machine, and connects the two air outlet pipe joints to the air inlet hoses of the two gas filling guns respectively, so that gas filling can be carried out. During the gas filling process, the natural gas enters the filter cavity through the air inlet pipe joint, and the filter element can be used to intercept and filter impurities in the natural gas, so that the impurities remain in the external space of the filter element, and the filtered natural gas passes through the filter holes on the filter element into the ventilation cavity, and then the filtered natural gas is discharged from the two air outlet pipe joints in two ways, so that the two gas filling guns can be used to fill natural gas for two vehicles at the same time, thereby improving the gas filling efficiency.

[0016] 2. The present application utilizes a cleaning assembly consisting of a pull rod, a scraper ring and a pull handle to facilitate scraping off impurities adhered to the outer wall of the filter element, thereby achieving the effect of convenient cleaning of the filter element, ensuring good air permeability of the filter element, improving the filtering effect and filtering efficiency of the filter element, and thus achieving the effect of cleaning the filter element without removing the filter element, which can effectively reduce the number of times the filter element is removed for cleaning, and the operation is simple and convenient.

[0017] 3. The present application can improve the sealing effect between the connecting seat and the filter chamber by setting the number of the first sealing ring and the second sealing ring to be no less than two.

[0018] 4. This application provides a drain hole and a cock to facilitate the discharge of scraped impurities out of the filter chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0020] Figure 2 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the filter element, the connecting seat and the sealing cover.

[0022] In the figure, 1. filter housing; 2. filter chamber; 3. air inlet pipe joint; 4. air outlet pipe joint; 5. sealing cover plate; 6. connecting seat; 7. ventilation chamber; 8. ventilation hole; 9. first sealing ring; 10. second sealing ring; 11. filter element; 12. first locking screw; 13. connecting ring; 14. second locking screw; 15. pull rod; 16. scraper ring; 17. pull handle; 18. guide rod; 19. drain hole; 20. plug. DETAILED DESCRIPTION

[0023] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0024] See also Figure 1 , Figure 2 and Figure 3The present application provides a filter for a gas filling machine, including a filter housing 1 installed on the gas filling machine, a filter chamber 2 is provided in the filter housing 1, the right side of the filter chamber 2 is an opening structure, an air inlet pipe joint 3 is fixedly connected to the left side of the filter housing 1, the air inlet pipe joint 3 is used to be fixedly connected to the natural gas delivery soft pipe on the gas filling machine, so as to deliver the natural gas to the filter chamber 2, the top right side and the bottom right side of the filter housing 1 are fixedly connected to the air outlet pipe joint 4, the two air outlet pipe joints 4 are used to be fixedly connected to the air inlet hoses of two gas filling guns respectively, so that the natural gas entering the filter chamber 2 can be discharged from the two gas filling guns in two ways, which can simultaneously meet the needs of using two gas filling guns respectively. To add natural gas to two vehicles and improve the gas filling efficiency, a sealing cover plate 5 is detachably mounted and fixed on the right side wall of the filter housing 1. The sealing cover plate 5 is used to seal the right side opening of the filter chamber 2. A connecting seat 6 located in the filter chamber 2 is fixedly mounted on the left side wall of the sealing cover plate 5. A ventilation cavity 7 with an opening structure on the left side is provided in the connecting seat 6. Ventilation holes 8 are provided on the top inner wall and the bottom inner wall of the ventilation cavity 7. A first sealing ring 9 and a second sealing ring 10 are fixedly sleeved on the connecting seat 6. The first sealing ring 9 is located on the left side of the ventilation hole 8, and the second sealing ring 10 is located on the right side of the ventilation hole 8. One end of the two air outlet pipe joints 4 is located between the first sealing ring 9 and the second sealing ring 10. The outer ring of the first sealing ring 9 and the outer ring of the second sealing ring 10 are both in sliding sealing contact with the inner wall of the filter chamber 2. The first sealing ring 9 and the second sealing ring 10 can be used to effectively seal the gap between the connecting seat 6 and the filter chamber 2, and can ensure that the filtered natural gas can all enter the ventilation chamber 7 and then be discharged from the two ventilation holes 8. Finally, the filtered natural gas is discharged from the two outlet pipe joints 4. The left side of the connecting seat 6 is detachably installed with a filter element 11. The right side of the filter element 11 is an open structure and is connected to the ventilation chamber 7. The filter element 11 can be used to intercept and filter impurities in the natural gas, so that the impurities remain outside the filter element 11. The filter housing 1 is provided with a scraper A cleaning component for removing impurities adhered to the outer wall of the filter element 11, the cleaning component includes a pull rod 15, a scraper ring 16 and a pull handle 17. A sliding hole is opened on the left inner wall of the filter chamber 2, and the right end of the pull rod 15 slides through the hole. The scraper ring 16 is fixedly installed on the right end of the pull rod 15, and the scraper ring 16 is sleeved on the filter element 11. The inner ring wall of the scraper ring 16 is in sliding contact with the outer wall of the filter element 11. The pull handle 17 is fixedly installed on the left end of the pull rod 15. The pull handle 17 is used to facilitate the pull rod 15 and the scraper ring 16 to move in a straight line. The scraper ring 16 can be used to scrape off impurities adhered to the outer wall of the filter element 11, so as to facilitate cleaning of the filter element 11, ensure the good air permeability of the filter element 11, and improve the filtering effect and filtering efficiency of the filter element 11.

[0025] In this embodiment, the sealing cover plate 5 is fixedly mounted on the right side wall of the filter housing 1 by a first locking screw 12, which facilitates the disassembly and assembly of the sealing cover plate 5. A connecting ring 13 is fixedly sleeved on the right side outer wall of the filter element 11. The connecting ring 13 is fixedly mounted on the left side wall of the connecting seat 6 by a second locking screw 14, which facilitates the disassembly and assembly of the filter element 11.

[0026] In this embodiment, the number of the first sealing ring 9 and the second sealing ring 10 are both set to be no less than two, so as to improve the sealing effect between the connecting seat 6 and the filter cavity 2.

[0027] In this embodiment, the inner diameter of the filter element 11 is larger than the diameter of the ventilation cavity 7 , which can ensure that the filtered air can enter the ventilation cavity 7 smoothly and completely.

[0028] In this embodiment, a third sealing ring is fixedly installed in the sliding hole, and the pull rod 15 is slidably sealed with the sliding hole through the third sealing ring, which can seal the gap between the pull rod 15 and the sliding hole to prevent natural gas from being discharged from the sliding hole.

[0029] In this embodiment, a guide rod 18 is fixedly installed on the left inner wall of the filter chamber 2, and a sliding sleeve of the scraper ring 16 is arranged on the guide rod 18 to guide the moving direction of the scraper ring 16 so that the scraper ring 16 can move smoothly on the filter element 11.

[0030] In this embodiment, a drain hole 19 is opened on the top inner wall of the filter chamber 2 , and a plug 20 is installed on the inner thread of the drain hole 19 to discharge the scraped impurities out of the filter chamber 2 .

[0031] Through the above structure, when the gas filling machine filter provided by the present application is in use, the filter element 11 can be used to filter impurities in the natural gas, and two gas filling guns can be used to fill natural gas for two vehicles at the same time, thereby improving the gas filling efficiency and facilitating the scraping of impurities adhering to the outer wall of the filter element 11, so that the filter element 11 can be cleaned without removing it, thereby ensuring the good air permeability of the filter element 11, improving the filtering effect and filtering efficiency of the filter element 11, and thus effectively reducing the number of times the filter element 11 is removed for cleaning, and the operation is simple and convenient. During the specific operation, the air inlet pipe joint 3 is connected to the natural gas delivery soft pipe on the gas filling machine, and the two air outlet pipe joints 4 are respectively connected to the air inlet hoses of the two gas filling guns, and then the gas filling can be used. During the gas filling process, the natural gas enters the filter chamber 2 through the air inlet pipe joint 3, and the filter element 11 can be used to intercept and filter the impurities in the natural gas, so that the impurities remain in the filter. In the external space of the filter element 11, the filtered natural gas passes through the filter holes on the filter element 11 and enters the ventilation cavity 7, and then the filtered natural gas is divided into two paths and discharged from the two air outlet pipe joints 4 respectively, so that the function of using two gas filling guns to fill natural gas for two vehicles respectively can be satisfied at the same time, thereby improving the gas filling efficiency. After a period of use, the pull handle 17 can be pulled back and forth regularly to move, and the pull handle 17 drives the pull rod 15 and the scraper ring 16 to move back and forth. The scraper ring 16 can be used to scrape off the impurities adhering to the outer wall of the filter element 11, thus realizing the function of convenient cleaning of the filter element 11, which can ensure the good air permeability of the filter element 11, improve the filtering effect and filtering efficiency of the filter element 11, and further realize the effect of cleaning the filter element 11 without removing it, which can effectively reduce the number of times the filter element 11 is removed for cleaning, and the operation is simple and convenient. By unscrewing the plug 20 and turning the drain hole 19 downward, the impurities can be poured out from the filter cavity 2.

Claims

1. A filter for a gas dispenser, characterized in that: The invention comprises a filter housing (1) installed on a gas filling machine, wherein a filter chamber (2) is provided in the filter housing (1), the right side of the filter chamber (2) is an open structure, the left side of the filter housing (1) is fixedly connected to an air inlet pipe joint (3), the top right side and the bottom right side of the filter housing (1) are both fixedly connected to an air outlet pipe joint (4), a sealing cover plate (5) is detachably fixedly installed on the right side wall of the filter housing (1), a connecting seat (6) located in the filter chamber (2) is fixedly installed on the left side wall of the sealing cover plate (5), a ventilation chamber (7) with an open structure on the left side is provided in the connecting seat (6), ventilation holes (8) are provided on the top inner wall and the bottom inner wall of the ventilation chamber (7), and a sealing cover plate (5) is fixedly installed on the right side wall of the filter housing (1). The fixed sleeve is provided with a first sealing ring (9) and a second sealing ring (10), the first sealing ring (9) being located on the left side of the vent hole (8), the second sealing ring (10) being located on the right side of the vent hole (8), and one end of each of the two outlet pipe joints (4) being located between the first sealing ring (9) and the second sealing ring (10), the outer ring of the first sealing ring (9) and the outer ring of the second sealing ring (10) both being in sliding sealing contact with the inner wall of the filter cavity (2), the left side of the connecting seat (6) being detachably mounted with a filter element (11), the right side of the filter element (11) being an open structure and being in communication with the vent cavity (7), and the filter housing (1) being provided with a cleaning component for scraping off impurities adhering to the outer wall of the filter element (11).

2. A filter for a gas dispenser according to claim 1, characterized in that: The sealing cover plate (5) is fixedly mounted on the right side wall of the filter housing (1) by means of a first locking screw (12).

3. A filter for a gas dispenser according to claim 1, characterized in that: A connecting ring (13) is fixedly sleeved on the right outer wall of the filter element (11), and the connecting ring (13) is fixedly mounted on the left wall of the connecting seat (6) via a second locking screw (14).

4. A filter for a gas dispenser according to claim 1, characterized in that: The number of the first sealing ring (9) and the second sealing ring (10) is set to be no less than two.

5. The filter for a gas dispenser according to claim 1, characterized in that: The inner diameter of the filter element (11) is greater than the diameter of the ventilation cavity (7).

6. A filter for a gas dispenser according to claim 1, characterized in that: The cleaning assembly comprises a pull rod (15), a scraper ring (16) and a pull handle (17); a sliding hole is provided on the left inner wall of the filter chamber (2); the right end of the pull rod (15) passes through the sliding hole; the scraper ring (16) is fixedly mounted on the right end of the pull rod (15); the scraper ring (16) is sleeved on the filter element (11); the inner ring wall of the scraper ring (16) is in sliding contact with the outer wall of the filter element (11); and the pull handle (17) is fixedly mounted on the left end of the pull rod (15).

7. A filter for a gas dispenser according to claim 6, characterized in that: A third sealing ring is fixedly installed in the sliding hole, and the pull rod (15) is slidably sealed with the sliding hole through the third sealing ring.

8. A filter for a gas dispenser according to claim 6, characterized in that: A guide rod (18) is fixedly mounted on the left inner wall of the filter chamber (2), and the sliding sleeve of the scraper ring (16) is arranged on the guide rod (18).

9. A filter for a gas dispenser according to claim 6, characterized in that: A drainage hole (19) is provided on the top inner wall of the filter chamber (2), and a plug (20) is installed in the drainage hole (19) through an internal thread.

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