Chemical feeding valve body and integrated chemical feeding valve group

Abstract

The utility model discloses a dosing valve body which is used for connecting a counterbalance valve element, a safety valve element and a damper to form an integrated dosing valve bank, a plurality of channel holes are formed in the dosing valve body, and the channel holes comprise a first vertical hole, a longitudinal hole, a first annular hole, a first transverse hole, a connecting hole, a second annular hole, a second transverse hole and a second vertical hole. The utility model further discloses an integrated dosing valve bank which comprises a dosing valve body, a safety valve element, a back pressure valve element and a damper. The dosing valve body is the dosing valve body disclosed by the utility model; the safety valve element is installed at the first annular hole and the third opening and communicates with the first annular hole and the first transverse hole to jointly form a safety valve. The back pressure valve element is installed at the second annular hole and the fifth opening and communicates with the second annular hole and the second transverse hole to jointly form the back pressure valve. The damper is installed at the position of the second opening. The utility model has the advantages of few channel holes, low processing difficulty, high integration degree and low maintenance cost.

Description

Technical Field

[0001] This application relates to the technical field of chemical dosing equipment, and particularly to a chemical dosing valve body and an integrated chemical dosing valve group. Background Art

[0002] In the processes of purified water and sewage treatment, in order to meet the corresponding water quality index requirements, different liquid chemicals need to be added at different stages of water treatment. To achieve the dosing of liquid chemicals, a chemical dosing device generally needs to be set up in the chemical dosing room. The chemical dosing device is the carrier for the dosing of chemicals, and it is used to dose liquid chemicals in a long-term and stable manner.

[0003] Generally, the chemical dosing device consists of a chemical dosing pump, a back pressure valve, a safety valve, a pulse damper, a pressure gauge, related pipe fittings and their brackets. The chemical dosing pump, the back pressure valve, the safety valve, the pulse damper, the pressure gauge and their related pipe fittings are installed on the brackets for fixed support to form a skid-mounted chemical dosing device. However, this skid-mounted chemical dosing device has a low integration level, many pipe elbows, and a high leakage risk.

[0004] In view of this, the applicant applied for a patent with the application number CN113582270A and the patent name "Chemical Dosing Valve Group and Chemical Dosing Device". By installing an inlet chemical valve core, a sampling valve core, an outlet chemical valve core, a safety valve core, a back pressure valve core, etc. in the installation holes of the chemical dosing valve body, and at the same time forming relevant channels in the valve body to connect with a Y-type filter, an inlet chemical valve core, a sampling valve core, an outlet chemical valve core, a safety valve core, a back pressure valve core, a pulse damper and a pressure gauge, a chemical dosing valve group is formed. Compared with the traditional skid-mounted device, the chemical dosing valve group has a high integration level, fewer pipe elbows and a low leakage risk.

[0005] However, it is found in practice that during the production process of this chemical dosing valve group, the assembly of the inlet and outlet chemical valve cores and the sampling valve core is difficult, with high technical requirements, and at the same time, the risk of assembly failure is relatively high. In addition, the external dimensions of the valve body are large, and the internal channel structure is too complex, making the processing difficult. Summary of the Utility Model

[0006] To solve the above technical problems, the purpose of the present utility model is to provide a chemical dosing valve body and an integrated chemical dosing valve group that can reduce the processing difficulty.

[0007] The technical solution provided by the present utility model is as follows:

[0008] A chemical dosing valve body is used to connect a back pressure valve spool, a safety valve spool, and a damper to form an integrated chemical dosing valve group. A plurality of channel holes are provided inside the chemical dosing valve body. The channel holes include a first vertical hole, a longitudinal hole, a first annular hole, a first transverse hole, a connection hole, a second annular hole, a second transverse hole, and a second vertical hole. The two ends of the first vertical hole respectively form a first opening and a second opening on the surface of the chemical dosing valve body, and are respectively connected to the liquid outlet pipeline of the chemical dosing pump and the damper. The longitudinal hole communicates with the first vertical hole. The first transverse hole is located in the center of the first annular hole and respectively forms a safety valve discharge channel and a safety valve fluid channel for connecting the safety valve spool. The first annular hole communicates with the longitudinal hole. The first transverse hole penetrates the chemical dosing valve body, and the two ends respectively form a third opening and a fourth opening on the surface of the chemical dosing valve body, and are respectively connected to the safety valve spool and the safety valve return pipe. The second transverse hole is located in the center of the second annular hole and respectively forms a back pressure valve discharge channel and a back pressure valve fluid channel for connecting the back pressure valve spool. The second annular hole communicates with the first annular hole through the connection hole. The second transverse hole penetrates the chemical dosing valve body, and the two ends respectively form a fifth opening and a sixth opening on the surface of the chemical dosing valve body, and are respectively connected to the back pressure valve spool and the liquid outlet pipeline.

[0009] Preferably, the channel holes are all formed by drilling.

[0010] Preferably, one end of the longitudinal hole forms an eighth opening on the surface of the chemical dosing valve body, and the eighth opening is blocked by a first plug.

[0011] Preferably, a process hole for facilitating the machining of the connection hole is further provided inside the chemical dosing valve body. One end of the process hole is connected to the connection hole, and the other end forms a ninth opening on the surface of the chemical dosing valve body, and the ninth opening is blocked by a second plug.

[0012] Preferably, it is also used to connect a pressure gauge. The channel holes further include a second vertical hole. The upper end of the second annular hole communicates with the second vertical hole. The second vertical hole forms a seventh opening on the surface of the chemical dosing valve body for connecting the pressure gauge.

[0013] An integrated chemical dosing valve group includes a chemical dosing valve body, a safety valve spool, a back pressure valve spool, and a damper. The chemical dosing valve body is the chemical dosing valve body as described above. The safety valve spool is installed at the positions of the first annular hole and the third opening, and communicates with the first annular hole and the first transverse hole to jointly form a safety valve. The back pressure valve spool is installed at the positions of the second annular hole and the fifth opening, and communicates with the second annular hole and the second transverse hole to jointly form a back pressure valve. The damper is installed at the second opening position.

[0014] Preferably, it further includes a dosing pump liquid outlet movable joint, a safety valve return movable joint, and a back pressure valve liquid outlet movable joint; the dosing pump liquid outlet movable joint is installed at the first opening position and communicates with the first opening, so that the first opening is connected to the dosing pump liquid outlet pipeline through the dosing pump liquid outlet movable joint; the safety valve return movable joint is installed at the fourth opening position and communicates with the fourth opening, so that the fourth opening is connected to the safety valve return pipe through the safety valve return movable joint; the back pressure valve liquid outlet movable joint is installed at the sixth opening position and communicates with the sixth opening, so that the sixth opening is connected to the liquid outlet pipeline through the back pressure valve liquid outlet movable joint.

[0015] Preferably, a damper movable joint is installed at the second opening of the first vertical hole, and the damper is installed on the damper movable joint.

[0016] Preferably, it further includes a pressure gauge. The channel hole further includes a second vertical hole, and the upper end of the second annular hole communicates with the second vertical hole; the second vertical hole forms a seventh opening on the surface of the dosing valve body, and the pressure gauge is installed at the seventh opening position and communicates with the seventh opening.

[0017] Preferably, a pressure gauge movable joint is installed at the seventh opening of the second vertical hole, and the pressure gauge is installed on the pressure gauge movable joint.

[0018] Compared with the prior art, for the dosing valve body and the integrated dosing valve group of the present utility model, by arranging a plurality of channel holes including a first vertical hole, a longitudinal hole, a first annular hole, a first transverse hole, a connection hole, a second annular hole, a second transverse hole, and a second vertical hole inside the dosing valve body to connect the back pressure valve spool, the safety valve spool, and the damper to form an integrated dosing valve group, this structure has fewer channel holes, reduces the processing difficulty, has a higher degree of integration, less leakage, good sealing performance and pressure holding effect, can reduce the failure points at the same time, and is more convenient for maintenance and repair, and can quickly replace the damaged components, thereby reducing the maintenance cost. And it significantly reduces the size of the dosing valve body and reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a three-dimensional schematic diagram of the integrated dosing valve group according to the embodiment of the present utility model;

[0021] Figure 2 is Figure 1 the front view of the shown integrated dosing valve group;

[0022] Figure 3 The Figure 1 right view of the integrated chemical dosing valve group shown;

[0023] Figure 4 is Figure 1 the left view of the integrated chemical dosing valve group shown;

[0024] Figure 5 is Figure 1 the bottom view of the integrated chemical dosing valve group shown;

[0025] Figure 6 is Figure 1 the top view of the integrated chemical dosing valve group shown;

[0026] Figure 7 is Figure 1 the front view of the chemical dosing valve body in the integrated chemical dosing valve group shown;

[0027] Figure 8 is Figure 7 the sectional view along A-A;

[0028] Figure 9 is Figure 7 the sectional view along B-B;

[0029] Figure 10 is Figure 7 the sectional view along C-C;

[0030] Figure 11 is Figure 7 the right view of the chemical dosing valve body shown;

[0031] Figure 12 is Figure 11 the sectional view along D-D;

[0032] Figure 13 is Figure 1 the combined front view of the chemical dosing valve body, back pressure valve spool and safety valve spool in the integrated chemical dosing valve group shown;

[0033] Figure 14 is Figure 13 the sectional view along E-E. Detailed implementation manners

[0034] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise specifically defined.

[0038] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementable conditions of the present application. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present application.

[0039] As Figures 1 to 14 shown, the embodiment of the present utility model provides an integrated chemical dosing valve group, which includes a chemical dosing valve body 1, a back pressure valve spool 2, a safety valve spool 3, a pressure gauge 4, a damper 5, a chemical dosing pump liquid outlet movable joint 6, a back pressure valve liquid outlet movable joint 7, and a safety valve return liquid movable joint 8. In other embodiments, the pressure gauge 4 may not be included, but instead the pressure gauge carried by the damper 5 is directly used to detect and display the channel pressure.

[0040] As Figures 7 to 12 shown, the chemical dosing valve body 1 is internally provided with a plurality of channel holes, and the channel holes include a first vertical hole 11, a longitudinal hole 12, a first annular hole 13, a first transverse hole 14, a connection hole 15, a second annular hole 16, a second transverse hole 17, and a second vertical hole 18. Preferably, these channel holes are all formed by drilling.

[0041] Both ends of the first vertical hole 11 form a first opening 111 and a second opening 112 on the surface of the chemical dosing valve body respectively, connecting to a chemical dosing pump (in this embodiment, a chemical dosing pump outlet movable joint 6 is installed at the first opening 111, and the chemical dosing pump outlet pipe is connected through the chemical dosing pump outlet movable joint 6. Of course, in other embodiments, the first opening can also be directly connected to the chemical dosing pump outlet pipe) and a damper 5 (in this embodiment, a damper movable joint 9 is installed at the second opening 112, and the damper 5 is installed on the damper movable joint 9. Of course, in other embodiments, the damper can also be directly installed at the second opening). The longitudinal hole 12 communicates with the first vertical hole 11.

[0042] The first transverse hole 14 is located at the center of the first annular hole 13, forming a safety valve discharge channel and a safety valve fluid channel respectively, for connecting to a safety valve spool 3, jointly constituting a safety valve. The first annular hole 13 communicates with the longitudinal hole 12. The first transverse hole 14 penetrates the chemical dosing valve body, and both ends form a third opening 141 and a fourth opening 142 on the surface of the chemical dosing valve body respectively, connecting to the safety valve spool 3 and a safety valve return pipe (in this embodiment, a safety valve return movable joint 8 is installed at the fourth opening 142, and the safety valve return pipe is connected through the safety valve return movable joint 8. Of course, in other embodiments, the fourth opening can also be directly connected to the safety valve return pipe).

[0043] The second transverse hole 17 is located at the center of the second annular hole 16, forming a back pressure valve discharge channel and a back pressure valve fluid channel respectively, for connecting to a back pressure valve spool 2, jointly constituting a back pressure valve. The second annular hole 16 communicates with the first annular hole 13 through a connecting hole 15. The upper end of the second annular hole 16 communicates with the second vertical hole 18. The second transverse hole 17 penetrates the chemical dosing valve body, and both ends form a fifth opening 171 and a sixth opening 172 on the surface of the chemical dosing valve body respectively, connecting to the back pressure valve spool and a liquid outlet pipe (in this embodiment, a back pressure valve liquid outlet movable joint 7 is installed at the sixth opening 172, and the liquid outlet pipe is connected through the back pressure valve liquid outlet movable joint 7. Of course, in other embodiments, the sixth opening can also be directly connected to the liquid outlet pipe). The second vertical hole 18 forms a seventh opening 181 on the surface of the chemical dosing valve body, connecting to a pressure gauge 4 (in this embodiment, a pressure gauge movable joint 10 is installed at the seventh opening 181 of the second vertical hole, and the pressure gauge 4 is installed on the pressure gauge movable joint 10. Of course, in other embodiments, the pressure gauge can also be directly installed at the seventh opening).

[0044] In this embodiment, the above-mentioned movable joints all adopt external thread unions for convenient installation. Of course, in other embodiments, movable joints can also be used only at some connection points, or no movable joints are used at all.

[0045] In this embodiment, one end of the longitudinal hole 12 forms an eighth opening 121 on the surface of the chemical dosing valve body, and the eighth opening 121 is blocked by a first plug 122. A process hole 19 for facilitating the machining of the connection hole 15 is further provided inside the chemical dosing valve body 1. One end of the process hole 19 is connected to the connection hole 15, and the other end forms a ninth opening 191 on the surface of the chemical dosing valve body. The ninth opening 191 is blocked by a second plug 192. Both the eighth opening 121 and the process hole 19 facilitate drilling.

[0046] In this embodiment, the backpressure valve is used to be installed on the positive pressure discharge pipeline of the chemical dosing pump to prevent the occurrence of siphon phenomenon and eliminate the change in the dosing amount caused by the pressure fluctuation at the dosing point. In this embodiment, as Figure 13 , Figure 14 shown, in addition to being integrated into the backpressure valve discharge channel and the backpressure valve fluid channel of the chemical dosing valve body, the backpressure valve further includes a cover plate 20 and a gasket 21, a sealing press head 22, a spring 23, and an adjusting stud 24 that are arranged from the inside to the outside and accommodated inside the cover plate 20. The gasket 21, the sealing press head 22, the spring 23, and the adjusting stud 24 constitute the backpressure valve spool 2. The adjusting stud 24 is screwed onto the cover plate 20 to adjust the pressure magnitude. During use, remove the protective cap (not shown) on the adjusting stud at the site, rotate the adjusting stud, and with the help of the pressure gauge in the pipeline, it can be adjusted to the required pressure. The backpressure can be set in the range of 0 - 0.6 Mpa through the adjusting screw. Moreover, when used in conjunction with a pulsation damper, it can reduce the damage of water hammer to the system, maintain a certain constant pressure from the outlet of the pump to the backpressure valve spool, and keep the system flow rate uniform. Each component of the backpressure valve spool in this embodiment can be installed after removing the valve seat from an existing backpressure valve, or can be customized and produced separately.

[0047] In this embodiment, the safety valve is used when the pressure in the system pipeline exceeds the preset pressure. The diaphragm and the spool are lifted, and the medium is discharged through the discharge channel to the return pipe and the container. At the site, the pressure can be set in the range of 0 - 1.0 Mpa through the adjusting screw with the help of the pressure gauge in the pipeline. The relief pressure is generally set 0.1 - 0.2 Mpa higher than the system pressure. The pressure regulation of the safety valve spool is not allowed to exceed the maximum pressure of the chemical dosing pump to protect the safety of the pump and the normal operation of the system. In this embodiment, the structure of the safety valve is similar to that of the backpressure valve and will not be elaborated here.

[0048] In this embodiment, the damper 5 is a pulsation damper, which is used to smooth the pipeline pulsation through the change of the air chamber volume, can reduce the damage of water hammer to the system, reduce the peak value of the flow rate fluctuation, protect the pipeline, valve, and joint from the impact of pressure fluctuation, and when used in conjunction with the backpressure valve spool, it can reduce the pressure fluctuation of the pipeline and reduce the energy consumption of the system.

[0049] When the integrated chemical dosing valve group of this embodiment is working normally, the chemical agent enters through the liquid outlet pipeline of the chemical dosing pump, enters the first vertical hole 11 through the liquid outlet movable joint 6 of the chemical dosing pump, then enters the safety valve spool 3 through the longitudinal hole 12 and the first annular hole 13, and then enters the back pressure valve spool 2 through the connecting hole 15 and the second annular hole 16, and then reaches the reaction tank through the second transverse hole 17 and the liquid outlet pipeline. The chemical agent also enters the damper 5 through the second opening 112 of the first vertical hole 11 and the damper movable joint 9 to smooth the pipeline pulsation and reduce the water hammer phenomenon of the system. It enters the pressure gauge 4 through the second annular hole 16, the second vertical hole 18 and the pressure gauge movable joint 10 to display the channel pressure through the pressure gauge 4.

[0050] When the pipeline pressure increases and exceeds the preset pressure, the chemical agent still enters through the liquid outlet pipeline of the chemical dosing pump, enters the first vertical hole 11 through the liquid outlet movable joint 6 of the chemical dosing pump, then enters the safety valve spool 3 through the longitudinal hole 12 and the first annular hole 13. Then, part of the chemical agent is connected to the liquid outlet pipeline through the first transverse hole 14 and the safety valve return movable joint 8, so that this part of the chemical agent flows back to the storage tank or the front end of the fluid channel of the chemical dosing pump.

[0051] Compared with the prior art, the integrated chemical dosing valve group of this embodiment has the following advantages:

[0052] (1) The number of process holes is reduced, the integration degree is higher, the leakage is less, the sealing performance and the pressure holding effect are good. At the same time, the number of failure points can be reduced, and the maintenance and repair are more convenient. The damaged components can be replaced quickly, so that the maintenance cost can be reduced;

[0053] (2) The inlet and outlet chemical valve spools, sampling valve spools, safety valve spools and Y-type filters and their related channels are cancelled, which can significantly reduce the size of the chemical dosing valve body. The size of the chemical dosing valve body is smaller, the procurement cost of the chemical dosing valve body is lower, and the processing difficulty is reduced;

[0054] (3) The connection method and style of the safety valve spool and the back pressure valve spool of the whole integrated chemical dosing valve group are changed, so that the size of the chemical dosing valve body is further reduced and the cost is reduced;

[0055] (4) At the same time, the connection method of the integrated chemical dosing valve group with the inlet and outlet channels of the pipeline and the connection of the pressure gauge and the pulse damper uses movable joints for connection, which is beneficial to the disassembly, maintenance and cleaning of the module.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chemical dosing valve body is used to connect a back pressure valve spool, a safety valve spool, and a damper to form an integrated chemical dosing valve group, and is characterized in that The inside of the chemical dosing valve body is provided with a plurality of channel holes, which include a first vertical hole, a longitudinal hole, a first annular hole, a first transverse hole, a connection hole, a second annular hole, a second transverse hole, and a second vertical hole. Both ends of the first vertical hole respectively form a first opening and a second opening on the surface of the chemical dosing valve body, and are respectively connected to the liquid outlet pipeline of the chemical dosing pump and the damper. The longitudinal hole communicates with the first vertical hole. The first transverse hole is located in the center of the first annular hole and respectively forms a safety valve discharge channel and a safety valve fluid channel for connecting the safety valve spool. The first annular hole communicates with the longitudinal hole. The first transverse hole penetrates through the chemical dosing valve body, and both ends respectively form a third opening and a fourth opening on the surface of the chemical dosing valve body, and are respectively connected to the safety valve spool and the safety valve return pipe. The second transverse hole is located in the center of the second annular hole and respectively forms a back pressure valve discharge channel and a back pressure valve fluid channel for connecting the back pressure valve spool. The second annular hole communicates with the first annular hole through the connection hole. The second transverse hole penetrates through the chemical dosing valve body, and both ends respectively form a fifth opening and a sixth opening on the surface of the chemical dosing valve body, and are respectively connected to the back pressure valve spool and the liquid outlet pipeline.

2. The chemical dosing valve body according to claim 1, wherein All the channel holes are formed by drilling.

3. The chemical addition valve body according to claim 1, wherein, One end of the longitudinal hole forms an eighth opening on the surface of the chemical dosing valve body, and the eighth opening is blocked by a first plug.

4. The chemical dosing valve body according to claim 1, characterized in that, The inside of the chemical dosing valve body is further provided with a process hole for facilitating the machining of the connection hole. One end of the process hole is connected to the connection hole, and the other end forms a ninth opening on the surface of the chemical dosing valve body, and the ninth opening is blocked by a second plug.

5. The chemical dosing valve body according to claim 1, wherein It is also used to connect a pressure gauge. The channel holes further include a second vertical hole. The upper end of the second annular hole communicates with the second vertical hole. The second vertical hole forms a seventh opening on the surface of the chemical dosing valve body for connecting the pressure gauge.

6. An integrated chemical dosing valve group, characterized in that, It includes a chemical dosing valve body, a safety valve spool, a back pressure valve spool, and a damper. The chemical dosing valve body is the chemical dosing valve body according to any one of claims 1 to 4. The safety valve spool is installed at the positions of the first annular hole and the third opening, and communicates with the first annular hole and the first transverse hole to jointly form a safety valve. The back pressure valve spool is installed at the positions of the second annular hole and the fifth opening, and communicates with the second annular hole and the second transverse hole to jointly form a back pressure valve. The damper is installed at the second opening position.

7. The integrated chemical dosing valve group according to claim 6, wherein, It further includes a chemical dosing pump liquid outlet movable joint, a safety valve return movable joint, and a back pressure valve liquid outlet movable joint. The chemical dosing pump liquid outlet movable joint is installed at the first opening position and communicates with the first opening, so that the first opening is connected to the chemical dosing pump liquid outlet pipeline through the chemical dosing pump liquid outlet movable joint. The safety valve return movable joint is installed at the fourth opening position and communicates with the fourth opening, so that the fourth opening is connected to the safety valve return pipe through the safety valve return movable joint. The back pressure valve liquid outlet movable joint is installed at the sixth opening position and communicates with the sixth opening, so that the sixth opening is connected to the liquid outlet pipeline through the back pressure valve liquid outlet movable joint.

8. The integrated chemical dosing valve group according to claim 6, wherein, A damper movable joint is installed at the second opening of the first vertical hole, and the damper is installed on the damper movable joint.

9. The integrated chemical dosing valve group according to claim 6, characterized in that, It further includes a pressure gauge. The channel hole further includes a second vertical hole, and the upper end of the second annular hole communicates with the second vertical hole; the second vertical hole forms a seventh opening on the surface of the chemical dosing valve body, and the pressure gauge is installed at the position of the seventh opening and communicates with the seventh opening.

10. The integrated chemical dosing valve group according to claim 9, characterized in that, A pressure gauge movable joint is installed at the seventh opening of the second vertical hole, and the pressure gauge is installed on the pressure gauge movable joint.

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