A spray valve testing device

Abstract

The utility model relates to a spray equipment detection technical field especially, relate to a kind of injection valve testing device. Including mounting seat, mounting groove is opened in mounting seat, mounting seat side is provided with pressing plate, for plugging mounting groove, the outlet of injection valve is contacted with pressing plate, first air inlet groove is opened in mounting seat, the air inlet end of first air inlet groove is connected with external gas source by pipeline, air outlet end corresponds with the import of injection valve, the side away from pressing plate of mounting seat is opened with through-hole, through-hole is connected with the pressure relief hole of injection valve, mounting seat is opened with second air inlet groove, the air inlet end of second air inlet groove is connected with external gas source by pipeline, through-hole and the air outlet end of second air inlet groove are connected by pipeline, the pipeline is equipped with valve, valve is equipped with pressure relief port, pressure relief port is connected with through-hole. Before injection valve installation, whether it is intact to detect, guarantee the subsequent installation of injection valve can normally work, to avoid personnel repeatedly replacing it.

Description

Technical Field

[0001] This utility model relates to the field of spray equipment testing technology, and in particular to a spray valve testing device. Background Technology

[0002] During aluminum sheet processing, spray cooling is required. Depending on the sheet shape, the coolant spray volume needs adjustment, which is achieved through spray valves to regulate the coolant output from the nozzles. Each rolling mill requires hundreds of nozzle devices. After prolonged use, the spray valves are prone to damage. Replacing these valves is complex; therefore, before replacement, the new spray valve must be inspected for integrity to ensure proper operation after replacement.

[0003] There is currently no testing device that can directly detect whether the spray valve is intact. The integrity of the spray valve cannot be directly identified by the human eye. Most of the time, after the valve is installed, it is observed whether it can control the nozzle to spray normally. Once a new spray valve fails to work properly, it is time-consuming and laborious to replace it, and there is no guarantee that subsequent spray valves will also work properly. Summary of the Invention

[0004] To address the problem that existing injection valves cannot be tested for integrity before installation, this invention proposes an injection valve testing device. This device tests the integrity of the injection valve before installation, ensuring that the installed injection valve can function properly and avoiding repeated replacements by personnel.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A jet valve testing device includes a mounting base with a mounting groove for placing the jet valve. A pressure plate is detachably mounted on one side of the mounting base to seal the mounting groove. The outlet of the jet valve contacts the pressure plate, and the pressure plate has an air outlet for external communication with the outlet of the jet valve. The mounting base has a first air inlet groove, the inlet end of which is connected to an external air source via a pipe, and the outlet end of which corresponds to the inlet of the jet valve. A through hole is provided on the side of the mounting base away from the pressure plate, and the through hole is connected to the pressure relief hole of the jet valve. The mounting base also has a second air inlet groove, the inlet end of which is connected to an external air source via a pipe, and the through hole is connected to the outlet end of the second air inlet groove via a pipe. A valve is provided on the pipe, and the valve has a pressure relief port connected to the through hole.

[0006] Preferably, the pressure plate and the mounting base are fixed together by bolts.

[0007] Preferably, the mounting base is provided with a pressure relief groove, and the pressure relief groove is connected to the pressure relief port of the valve through a pipe.

[0008] Preferably, the injection valve includes a housing, a valve core, and a spring. The housing includes a first annular portion, a second annular portion, and a third annular portion connected in sequence. The inner and outer diameters of the first annular portion, the second annular portion, and the third annular portion increase sequentially. The third annular portion contacts the pressure plate. The end of the first annular portion contacts the groove wall of the mounting groove. The inlet of the injection valve is opened on the side wall of the second annular portion. The valve core includes a valve block and a valve stem. The valve block is slidably disposed within the second annular portion, and its outer diameter is larger than that of the first annular portion. The valve stem is fixed to the side of the valve block near the first annular portion, with one end extending into the first annular portion. The spring is sleeved on the outside of the valve stem, with one end fixed to the valve block and the other end fixed to the second annular portion. The end of the valve block near the third annular portion has an annular chamfered structure, which is located at the inlet of the injection valve when the spring is in a free state. The pressure relief hole of the injection valve is a channel inside the first annular portion, which communicates with the through hole and is located on the rear side of the valve core.

[0009] Preferably, the longitudinal section of the mounting groove is a stepped shape with vertical symmetry, adapted to the housing of the injection valve. This ensures that the injection valve is fixed inside the mounting groove after the pressure plate is fixed on the mounting base.

[0010] Preferably, the injection valve has multiple inlets, evenly spaced circumferentially on the sidewall of the second annular portion. This ensures that the compressed air introduced into the first air inlet slot directly corresponds to the inlet of the injection valve.

[0011] Preferably, the first air inlet slot and the second air inlet slot are connected by a through slot on the mounting base, and the air inlet end of one of the first air inlet slot and the other is connected to an external air source.

[0012] The beneficial effects of this utility model through the above technical solution are as follows: 1. In this utility model, after external compressed air is introduced into the first air inlet groove, the compressed air enters the inlet of the injection valve. At the same time, after external compressed air is introduced into the second air inlet groove, the compressed air enters the through hole after the valve is opened and then enters the pressure relief hole of the injection valve. At this time, the valve core in the injection valve is subjected to the pressure of compressed air on both the front and rear sides and cannot move. When the valve is closed and the pressure relief hole of the valve is opened, the compressed air at the pressure relief hole of the injection valve is discharged through the through hole and the pressure relief hole in sequence. At this time, the rear side of the valve core is no longer subjected to the pressure of compressed air. The valve core is pressed backward by the compressed air entering the inlet of the injection valve and opens the inlet of the injection valve. The compressed air passes through the inlet and outlet of the injection valve in sequence and is discharged from the outlet of the pressure plate. At this time, the manual inspection of whether compressed air is discharged from the outlet can detect whether the injection valve is intact. After the subsequent inspection of multiple injection valves, the manual inspection can begin to install them on the rolling mill, avoiding the repeated replacement work after the newly installed injection valve is found to be damaged.

[0013] 2. In this invention, the compressed air falling into the inlet of the injection valve first comes into contact with the chamfered structure of the valve block. At the same time, the compressed air entering the first annular part through the pressure relief hole of the injection valve comes into contact with the end of the valve core, so that the valve core cannot move inside the injection valve. When the valve is closed, the pressure relief port of the valve is opened, and the compressed air in the first annular part is discharged from the pressure relief port. At this time, the valve core is pressed by the compressed air entering the inlet of the injection valve and moves towards the first annular part, thereby fully opening the inlet of the injection valve. The compressed air passes through the inlet and outlet of the injection valve in sequence and is discharged from the air outlet of the pressure plate, so as to detect whether the injection valve is intact. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a jet valve testing device according to the present invention. Figure 1 The spring is in a compressed state; Figure 2 This is a schematic diagram of the structure of a jet valve testing device according to the present invention. Figure 2 The spring is in a free state; Figure 3 This is a cross-sectional view of the mounting base of a jet valve testing device according to the present invention, wherein the first air inlet groove and the second air inlet groove are connected by a through groove.

[0015] In the attached diagram, the numbers are as follows: 1 is the mounting groove, 2 is the first air inlet groove, 3 is the through hole, 4 is the second air inlet groove, 5 is the valve, 6 is the pressure relief groove, and 7 is the through groove. 11 is the valve core, 111 is the valve block, 1111 is the chamfered structure, 112 is the valve column, 12 is the spring, 13 is the first annular part, 14 is the second annular part, 15 is the third annular part, 16 is the inlet, and 17 is the pressure relief hole; 100 is the mounting base, 200 is the pressure plate, 210 is the air outlet, and 220 is the bolt. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-3 As shown, this embodiment provides a jet valve testing device, including a mounting base 100. The mounting base 100 has a mounting groove 1 for placing the jet valve. A pressure plate 200 is detachably installed on one side of the mounting base 100 to seal the mounting groove 1. In this embodiment, the pressure plate 200 is connected and fixed to the mounting base 100 by bolts 220. A threaded hole is provided on one side of the mounting base 100. The bolts 220 passing through the pressure plate 200 are threadedly connected to the threaded hole to fix the pressure plate 200 on one side of the mounting base 100. The outlet of the jet valve contacts the pressure plate 200, encapsulating the jet valve in the mounting groove 1. An air outlet 210 is provided on the pressure plate 200 to connect the outside to the outlet of the jet valve.

[0017] refer to Figure 2 A feasible injection valve structure is provided. The injection valve includes a housing, a valve core 11, and a spring 12. The housing includes a first annular portion 13, a second annular portion 14, and a third annular portion 15 connected in sequence. The inner and outer diameters of the first annular portion 13, the second annular portion 14, and the third annular portion 15 increase sequentially. The third annular portion 15 contacts a pressure plate 200. The end of the first annular portion 13 contacts the groove wall of the mounting groove 1. The inlet 16 of the injection valve is opened on the side wall of the second annular portion 14. In this embodiment, there are four inlets 16 of the injection valve, which are evenly opened circumferentially on the side wall of the second annular portion 14. The longitudinal section of the mounting groove 1 is a stepped shape with vertical symmetry and is adapted to the housing of the injection valve.

[0018] The valve core 11 includes a valve block 111 and a valve stem 112. The valve block 111 is slidably disposed within the second annular portion 14, and its outer diameter is larger than that of the first annular portion 13. The valve stem 112 is fixed to the side of the valve block 111 near the first annular portion 13, with one end extending into the first annular portion 13. The spring 12 is sleeved on the outside of the valve stem 112, with one end fixed to the valve block 111 and the other end fixed to the second annular portion 14. The end of the valve block 111 near the third annular portion 15 has an annular chamfered structure 1111. When the spring 12 is in a free state, the chamfered structure 1111 is located at the inlet 16 of the injection valve. In this embodiment, the outer wall of the valve block 111 contacts the inner wall of the second annular portion 14, ensuring that the two sides of the valve block 111 are in a state of non-communication.

[0019] Alternatively, the injection valve in this solution can be an externally purchased injection valve manufactured by EVERTZ HYDROTECHNIK GmbH&Co.KG, model SSCT899363-03, with a nominal diameter of DN12 and a pressure of PN16.

[0020] Further, refer to Figure 1 The mounting base 100 has a first air inlet slot 2. The air inlet end of the first air inlet slot 2 is connected to an external air source through a pipe, and the air outlet end corresponds to the inlet 16 of the injection valve. A through hole 3 is provided on the side of the mounting base 100 away from the pressure plate 200, and the through hole 3 is connected to the pressure relief hole 17 of the injection valve. The mounting base 100 also has a second air inlet slot 4. The air inlet end of the second air inlet slot 4 is connected to an external air source through a pipe, and the through hole 3 is connected to the air outlet end of the second air inlet slot 4 through a pipe. A valve 5 is provided on this pipe, and the valve 5 has a pressure relief port, which is connected to the through hole 3. In this embodiment, quick-connect fittings can be fixed to the first air inlet slot 2 and the second air inlet slot 4, and then fixedly connected to one end of the pipe before connecting the other end to the external air source.

[0021] To integrate all test components onto the mounting base 100, a pressure relief groove 6 is provided on the mounting base 100. The pressure relief groove 6 is connected to the pressure relief port of the valve 5 via a pipe. In this embodiment, a valve can be installed on the pipe connecting the pressure relief port of the valve 5 and the pressure relief groove 6 to control its opening and closing. In the normally closed state of some valve pressure relief ports, their pressure relief ports can also be manually opened to release the compressed air entering the through hole 3 and the pressure relief hole 17 of the injection valve.

[0022] Simultaneously, the valves in this solution can also be equipped with a pilot valve purchased from EVERTZ HYDROTECHNIK GmbH&Co.KG, product number H5010867, with a nominal diameter of DN1.2 and a pressure of PN2-10 bar. The opening and closing of this valve controls whether compressed air enters the through-hole 3 and the pressure relief port 17 of the injection valve. The opening and closing of this valve's pressure relief port directly controls the discharge of compressed air entering the through-hole 3 and the pressure relief port 17 of the injection valve. After the injection valve in this device is tested and found to be intact, it can be used to test the opening and closing functions of the multiple purchased pilot valves, facilitating subsequent installation. This achieves both the testing of the injection valve and the testing of the pilot valve.

[0023] In other embodiments, reference is made to Figure 3 The first air intake slot 2 and the second air intake slot 4 are connected by a through slot 7 on the mounting base 100. One of the air intake ends of the first air intake slot 2 and the second air intake slot 4 is closed, while the other is connected to an external air source. In this embodiment, only one external air source is needed. With the air intake end of the second air intake slot 4 closed, air is supplied to both the first air intake slot 2 and the second air intake slot 4 through the external air source connected to the first air intake slot 2.

[0024] In this embodiment, in order to open the through groove 7, a groove is made at the end of the mounting base 100 away from the pressure plate 200. After the groove is opened, its end needs to be sealed to prevent communication with the outside. The original air inlet end of the second air inlet groove 4 is sealed in the same way. The operation is to squeeze the steel ball into the gap of the groove body to make the groove body expand radially to achieve a sealing effect.

[0025] When using this device, firstly, external compressed air is introduced into the first air inlet 2. The compressed air enters the inlet 16 of the injection valve and first comes into contact with the chamfered structure 1111 of the valve block 111. At the same time, after external compressed air is introduced into the second air inlet 4, the compressed air enters the through hole 3 after the valve 5 is opened and then enters the pressure relief hole 17 of the injection valve, abutting the end of the valve stem 112. At this time, the valve core in the injection valve is subjected to the pressure of compressed air on both the front and rear sides and cannot move. When the valve 5 is closed and the pressure relief hole of the valve 5 is opened, The compressed air in the first annular part 13 is discharged through the through hole 3 and the pressure relief groove 6 in sequence. At this time, the rear side of the valve core is no longer subjected to the pressure of the compressed air. The valve core is pressed backward by the compressed air entering through the inlet 16 of the injection valve. At this time, the inlet 16 of the injection valve is fully opened. The compressed air passes through the inlet 16 and the outlet of the injection valve in sequence and is discharged through the outlet 210 of the pressure plate 200. At this time, manual inspection of whether compressed air is discharged from the outlet 210 can detect whether the injection valve is intact, thus avoiding repeated replacement work after the newly installed injection valve is found to be damaged.

[0026] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A jet valve testing device, comprising a mounting base (100), characterized in that, The mounting base (100) has a mounting groove (1) for placing the injection valve. A pressure plate (200) is detachably provided on one side of the mounting base (100) for sealing the mounting groove (1). The outlet of the injection valve is in contact with the pressure plate (200). An air outlet (210) is provided on the pressure plate (200) to connect the outside with the outlet of the injection valve. The mounting base (100) is provided with a first air inlet groove (2). The air inlet end of the first air inlet groove (2) is connected to an external air source through a pipe, and the air outlet end is corresponding to the inlet (16) of the injection valve. The mounting base (100) is provided with a through hole (3) on the side away from the pressure plate (200). The through hole (3) is connected to the pressure relief hole (17) of the injection valve. The mounting base (100) is provided with a second air inlet groove (4). The air inlet end of the second air inlet groove (4) is connected to an external air source through a pipe. The through hole (3) is connected to the air outlet end of the second air inlet groove (4) through a pipe. A valve (5) is provided on the pipe. A pressure relief port is provided on the valve (5). The pressure relief port is connected to the through hole (3).

2. The jet valve testing device according to claim 1, characterized in that, The pressure plate (200) and the mounting base (100) are connected and fixed by bolts (220).

3. The jet valve testing device according to claim 1, characterized in that, The mounting base (100) is provided with a pressure relief groove (6), and the pressure relief groove (6) is connected to the pressure relief port of the valve (5) through a pipe.

4. The jet valve testing device according to claim 1, characterized in that, The injection valve includes a housing, a valve core (11), and a spring (12). The housing includes a first annular portion (13), a second annular portion (14), and a third annular portion (15) connected in sequence. The inner and outer diameters of the first annular portion (13), the second annular portion (14), and the third annular portion (15) increase sequentially. The third annular portion (15) contacts the pressure plate (200). The end of the first annular portion (13) contacts the groove wall of the mounting groove (1). The inlet (16) of the injection valve is opened on the side wall of the second annular portion (14). The valve core (11) includes a valve block (111) and a valve stem (112). The valve block (111) is slidably disposed in the second annular portion (14) and its outer diameter is larger than that of the first annular portion (13). The valve stem (112) is fixed on the side of the valve block (111) near the first annular portion (13) and one end of it extends into the first annular portion (13). The spring (12) is sleeved on the outside of the valve stem (112) and one end of it is fixed on the valve block (111) and the other end is fixed on the second annular portion (14). The end of the valve block (111) near the third annular portion (15) has an annular chamfered structure (1111). When the spring (12) is in a free state, the chamfered structure (1111) is located at the inlet (16) of the injection valve.

5. The jet valve testing device according to claim 4, characterized in that, The longitudinal section of the mounting groove (1) is a stepped shape with symmetrical upper and lower sections, which is compatible with the housing of the injection valve.

6. The jet valve testing device according to claim 4, characterized in that, The inlet (16) of the injection valve is multiple and is evenly distributed circumferentially on the side wall of the second annular portion (14).

7. The jet valve testing device according to claim 1, characterized in that, The first air inlet slot (2) and the second air inlet slot (4) are connected by a through slot (7) on the mounting base (100). The air inlet end of one of the first air inlet slot (2) and the second air inlet slot (4) is closed, while the other is connected to an external air source.

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