A barrier type anti-pollution clean floor drain and use method thereof

Abstract

The present invention discloses a barrier-type pollution-proof clean floor drain, comprising a floor drain body (1), a check valve (2), a floor drain isolation valve (3), a water trap (4), a sewage pipe (5), a pressure sensor (6) and a vacuum pipe (7); the floor drain body (1) is installed on the floor (8) of a clean room, an elbow is connected between the floor drain body (1) and the vertical check valve (2), the floor drain body (1) is connected to the floor drain isolation valve (3), and the outlet end of the floor drain isolation valve (3) is connected to the water trap (4); the outlet end of the water trap (4) is connected to the sewage pipe (5), the outlet end of the vertical check valve (2) is connected to the vacuum pipe (7), and the pressure sensor (6) is installed on the vacuum pipe (7) via a tee.

Description

Technical Field

[0001] The present invention relates to the technical field related to drainage structures, in particular to a floor drain, specifically to a barrier-type anti-pollution clean floor drain and a use method thereof. Background Art

[0002] At present, in the field of drainage, especially in the clean room, the floor drains are all adopted. Figure 1 The stainless steel sanitary floor drain shown in the figure has a water seal inside, which blocks the connection between the clean room and the external environment of the sewage pipe through the water seal to ensure that the air in the clean room is not polluted; when this type of floor drain is in use, there are the following states: one is the state when the floor drain is not in use, such as Figure 1 As shown, the water seal 14 is filled with liquid (water or disinfectant), and the floor drain cover 12 is not opened. In this state, when the pressure of the environment outside the sewage pipe is positive relative to the clean room, the gas in the sewage pipe has the risk of breaking through the water seal and entering the clean room through the gap between the floor drain cover 12 and the floor drain body 11, thereby causing the risk of clean room pollution (even if a multi-stage water seal is connected in series, there is still the same pollution risk); the second is the state when the floor drain is used, such as Figure 2 As shown, the floor drain cover 12 is opened, and the clean room is drained through the floor drain. In this state, when the pressure of the environment outside the sewage pipe is positive relative to the clean room, the gas in the sewage pipe also has the risk of breaking through the water seal and polluting the clean room; the third is the state when the floor drain is sterilized, such as Figure 3 As shown, the floor drain cover 12 and the floor drain inner cover 13 are both opened. In this state, the environment outside the sewage pipe is directly connected to the clean room, and the risk of pollution is further increased. In addition, when the floor drain is not in use, if the liquid in the water seal 14 is unclean liquid, a large number of bacteria will breed, and there is a risk of contaminating the clean room through the gap between the floor drain cover 12 and the floor drain body 11. At the same time, if the floor drain is not supervised, the liquid in the floor drain water seal 14 is easily drained when the pressure of the environment outside the sewage pipe is negative relative to the clean room, causing the water seal to fail, and then bringing the risk of clean room pollution. Summary of the invention

[0003] The object of the present invention is to provide a barrier-type pollution-proof clean floor drain to solve the problems mentioned in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A barrier type anti-pollution clean floor drain, such as Figure 4As shown, it includes a floor drain body, a check valve, a floor drain isolation valve, a water trap, a sewage pipe, a pressure sensor and a vacuum pipe; the floor drain body is installed on the floor of the clean room, an elbow is connected between the floor drain body and the vertical check valve, the floor drain body is connected to the floor drain isolation valve, and the outlet end of the floor drain isolation valve is connected to the water trap; the outlet end of the water trap is connected to the sewage pipe, the outlet end of the vertical check valve is connected to the vacuum pipe, and the pressure sensor is installed on the vacuum pipe through a tee.

[0006] Preferably, see Figure 4 , 5 6. The floor drain main body includes a floor drain body, a floor drain top cover, a lower port of the floor drain main body and a side port of the floor drain main body. The lower port of the floor drain main body is connected to the floor drain isolation valve, and an elbow is connected between the side port of the floor drain main body and the vertical check valve. The sealing groove of the floor drain top cover is inlaid with a top cover sealing ring, and the bottom of the floor drain top cover is integrally threadedly connected to the guide rod. Such a design makes it easy to disassemble the floor drain top cover when disinfecting and sterilizing the floor drain. A guide rod push head is provided at the end of the guide rod, and the guide rod and the guide rod push head are threadedly connected. Such a design is easy to assemble. A compression spring is provided between the guide rod push head and the floor drain top cover, and the compression spring is sleeved on the guide rod. A perforated plate is provided inside the floor drain body, and the perforated plate is detachably provided on the guide rod to block slag.

[0007] Preferably, see Figure 6 The floor drain body is provided with a guide hole and a water retaining plate, the guide hole matches the guide rod, and the water retaining plate is located on the inner side of the side port of the floor drain body to prevent the drainage from being sucked into the vacuum pipe in large quantities.

[0008] Preferably, see Figure 4 , 6 The lower port of the floor drain main body is connected to the upper port of the floor drain isolation valve, the lower port of the floor drain isolation valve is connected to the upper port of the water trap, the side port of the floor drain main body is connected to the front end of the vertical check valve through an elbow; the other end of the elbow is connected to the vertical check valve; the discharge end of the vertical check valve is connected to the vacuum pipe; the pressure sensor is installed on the vacuum pipe through a tee.

[0009] Specifically, see Figure 5 If the floor drain isolation valve is not opened, the floor drain top cover is tightly attached to the floor drain body 01 under the action of the compression spring, and the sealing is achieved through the upper cover sealing ring; when the isolation valve is opened, the floor drain top cover, under the push of the valve core of the floor drain isolation valve, overcomes the resistance of the compression spring, and pushes the guide rod through the guide rod push head, thereby opening the floor drain top cover; that is, the opening and closing state of the floor drain top cover 02 is determined by the opening and closing state of the floor drain isolation valve, and the two are in a linkage state after assembly;

[0010] It can be seen that when the floor drain is not in use, the environment outside the sewage pipe and the clean room are completely isolated through the upper cover sealing ring 03; at the same time, the floor drain isolation valve realizes the isolation between the water seal (referring to the water in the water trap 4) and the floor drain top cover 02.

[0011] Working principle of the present invention:

[0012] The vacuum degree of the water ring vacuum pump is controlled by a variable frequency constant pressure control method (Note: the water ring vacuum pump is connected to the vacuum pipeline through a pipeline, which is not drawn in the figure. The water ring vacuum pump provides vacuum for the system and is an essential component of the present invention), so that the vacuum pipeline always maintains a constant vacuum degree; the vacuum degree in the vacuum pipeline is monitored by a pressure sensor, and the monitoring value is used as a prerequisite for opening the floor drain. The floor drain can be opened and used only when the vacuum monitoring value is normal through the floor drain switch (Note: 1. The floor drain switch is not drawn. The function of the floor drain switch is to control the opening and closing of the floor drain isolation valve. The floor drain isolation valve is a pneumatic valve or an electric valve; 2. The floor drain switch is installed in the clean room and is an essential component of the present invention);

[0013] It can be seen that the present invention does not allow opening without vacuum;

[0014] See also Figure 4 The method of using the present invention is described as follows:

[0015] 1) Maintain the vacuum state of the vacuum pipeline at all times (the vacuum is provided by the water ring vacuum pump, and the water ring vacuum pump is controlled by constant pressure frequency conversion to control the vacuum degree in the vacuum pipeline). Under the action of vacuum, the vertical check valve is opened, and the inner cavity of the floor drain body will be in a negative pressure state at all times;

[0016] 2) Do not turn on the floor drain switch (the floor drain switch is not shown and is installed in the clean room), and the floor drain is not in use; when the floor drain is not in use, even if the floor drain cover (see Figure 5 ) and floor drain body 01 (see Figure 5 ) fails, or the seal of the floor drain isolation valve also fails, the present invention can also completely isolate the environment outside the sewage pipe from the clean room under the action of vacuum;

[0017] 3) Turn on the floor drain switch and use the floor drain to drain or sterilize the floor drain. At this time, the floor drain isolation valve and floor drain top cover (see Figure 5 ) are opened synchronously. In this state, even if the gas in the environment outside the sewage pipe breaks through the water seal and gas goes up, the upward gas will be sucked away by the vacuum under the action of vacuum and will not enter the clean room to cause pollution;

[0018] 4) After using the floor drain, close the floor drain switch and remove the floor drain isolation valve and floor drain cover (see Figure 5 ) is closed synchronously, and the floor drain system returns to an unused state;

[0019] It can be seen that in addition to adopting compulsory isolation measures (compulsory isolation measures refer to installing a floor drain isolation valve and a floor drain top cover sealing ring), the present invention also introduces vacuum, and the introduction of vacuum greatly improves the safety of the floor drain in the clean room and has the characteristics of process controllability;

[0020] It should be noted that, in addition to being installed on the floors of various clean rooms to form a controllable floor drain system, the present invention can also be installed on various wash basins and wash basins in the clean room, and has the same isolation effect.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Solve the problem that when the floor drain is not in use, the environment outside the sewage pipe is not completely isolated from the clean room; 2. Solve the problem that when the floor drain is in use (the use state refers to the use of the floor drain for drainage or sterilization of the floor drain), the environment outside the sewage pipe is not completely isolated from the clean room; 3. Solve the isolation problem between the floor drain cover and the water trap that is easy to breed bacteria; 4. Solve the reliability problem of the isolation effect of the floor drain; 5. Solve the pollution risk problem caused by illegal operation of the floor drain;

[0023] The first problem is solved by installing an upper cover sealing ring on the upper cover of the floor drain, and using the upper cover sealing ring to seal the contact surface between the floor drain body and the upper cover of the floor drain when the floor drain is not in use;

[0024] The second problem is solved by installing a vacuum pipe on the floor drain and maintaining the vacuum at all times, and achieving isolation by blocking the vacuum extraction;

[0025] The third problem solved is achieved by installing a floor drain isolation valve between the floor drain body and the water trap;

[0026] The fourth problem is solved by maintaining a vacuum in the floor drain system at all times and using the vacuum for compulsory protection. Under the compulsory protection of the vacuum, even if the upper cover seal or the floor drain isolation valve fails, the leaked upward gas will be sucked away by the vacuum.

[0027] The fifth problem is solved by controlling the floor drain system so that it cannot be opened without vacuum, which eliminates the possibility of illegal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the closed state structure of the prior art;

[0029] Figure 2 This is a schematic diagram of the structure of the floor drain cover in the open state in the prior art;

[0030] Figure 3 It is a schematic diagram of the structure of the prior art in which both the upper cover and the inner cover of the floor drain are open;

[0031] Figure 4 This is the overall installation principle diagram of the present invention;

[0032] Figure 5 This is a schematic diagram of the main structure of the floor drain of the present invention;

[0033] Figure 6 It is a supplementary mark for the main features of the floor drain of the present invention;

[0034] In the figure:

[0035] 11. Floor drain body, 12. Floor drain top cover, 13. Floor drain inner cover, 14. Water seal, 15. Sewage pipe, 16. Clean room floor,

[0036] 1. Floor drain body, 2. Vertical check valve, 3. Floor drain isolation valve, 4. Trap, 5. Sewage pipe, 6. Pressure sensor, 7. Vacuum pipe, 8. Clean room floor,

[0037] 01. Floor drain body, 02. Floor drain upper cover, 03. Upper cover sealing ring, 04. Guide rod, 05. Compression spring, 06. Guide rod push head, 07. Orifice plate, 08. Lower port of floor drain body, 09. Side port of floor drain body, 010. Water retaining plate, 011. Guide hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention provides a technical solution:

[0040] A barrier type anti-pollution clean floor drain, such as Figure 4 As shown, it includes a floor drain body 1, a check valve 2, a floor drain isolation valve 3, a water trap 4, a sewage pipe 5, a pressure sensor 6 and a vacuum pipe 7; the floor drain body 1 is installed on the clean room floor 8, an elbow is connected between the floor drain body 1 and the vertical check valve 2, the floor drain body 1 is connected to the floor drain isolation valve 3, and the outlet end of the floor drain isolation valve 3 is connected to the water trap 4; the outlet end of the water trap 4 is connected to the sewage pipe 5, the outlet end of the vertical check valve 2 is connected to the vacuum pipe 7, and the pressure sensor 6 is installed on the vacuum pipe 7 through a tee.

[0041] See also Figure 4 , 56. The floor drain main body 1 includes a floor drain body 01, a floor drain top cover 02, a lower port 08 of the floor drain main body and a side port 09 of the floor drain main body. The lower port 08 of the floor drain main body is connected to the floor drain isolation valve 3. An elbow is connected between the side port 09 of the floor drain main body and the vertical check valve 2. The sealing groove of the floor drain top cover 02 is inlaid with a top cover sealing ring 03. The bottom of the floor drain top cover 02 is integrally threadedly connected to the guide rod 04. This design makes it easy to disassemble the floor drain top cover 02 when disinfecting and sterilizing the floor drain. A guide rod push head 06 is provided at the end of the guide rod 04. The guide rod 04 and the guide rod push head 06 are threadedly connected. This design is easy to assemble. A compression spring 05 is provided between the guide rod push head 06 and the floor drain top cover 02, and the compression spring 05 is sleeved on the guide rod 04. A perforated plate 07 is provided inside the floor drain body 01. The orifice plate 07 is detachably arranged on the guide rod 04 to block slag.

[0042] See also Figure 6 The floor drain body 01 is provided with a guide hole 011 and a water retaining plate 010, the guide hole 011 matches the guide rod 04, and the water retaining plate 010 is located on the inner side of the floor drain body side port 09 to prevent the drainage from being sucked into the vacuum pipe 7 in large quantities.

[0043] See also Figure 4 , 6 The lower port 08 of the floor drain body is connected to the upper port of the floor drain isolation valve 3, the lower port of the floor drain isolation valve 3 is connected to the upper port of the water trap 4, and the side port 09 of the floor drain body is connected to the front end of the vertical check valve 2 through an elbow; the other end of the elbow is connected to the vertical check valve 2; the discharge end of the vertical check valve 2 is connected to the vacuum pipe 7; the pressure sensor 6 is installed on the vacuum pipe 7 through a tee.

[0044] Specifically, see Figure 5 If the floor drain isolation valve 3 is not opened, the floor drain top cover 02 is tightly attached to the floor drain body 01 under the action of the compression spring 05, and the seal is achieved through the upper cover sealing ring 03; when the isolation valve 3 is opened, the floor drain top cover 02 is pushed by the valve core of the floor drain isolation valve 3, overcomes the resistance of the compression spring 04, and pushes the guide rod 04 through the guide rod push head 06, thereby opening the floor drain top cover 02; that is, the opening and closing state of the floor drain top cover 02 is determined by the opening and closing state of the floor drain isolation valve 3, and the two are in a linkage state after assembly;

[0045] It can be seen that when the floor drain is not in use, the environment outside the sewage pipe and the clean room are completely isolated through the upper cover sealing ring 03; at the same time, the floor drain isolation valve 3 realizes the isolation between the water seal (referring to the water in the water trap 4) and the floor drain top cover 02.

[0046] Working principle of the present invention:

[0047] The vacuum degree of the water ring vacuum pump is controlled by a variable frequency constant pressure control method (Note: the water ring vacuum pump is connected to the vacuum pipeline 7 through a pipeline, which is not drawn in the figure. The water ring vacuum pump provides vacuum for the system and is an essential component of the present invention), so that the vacuum pipeline 7 always maintains a constant vacuum degree; the vacuum degree in the vacuum pipeline 7 is monitored by a pressure sensor 6, and the monitoring value is used as a prerequisite for opening the floor drain. The floor drain can be opened and used by the floor drain switch only when the vacuum degree monitoring value is normal (Note: 1. The floor drain switch is not drawn. The function of the floor drain switch is to control the opening and closing of the floor drain isolation valve 3. The floor drain isolation valve 3 is a pneumatic valve or an electric valve; 2. The floor drain switch is installed in the clean room and is an essential component of the present invention);

[0048] It can be seen that the present invention does not allow opening without vacuum;

[0049] See also Figure 4 The method of using the present invention is described as follows:

[0050] 1) Maintain the vacuum state of the vacuum pipe 7 at all times (the vacuum is provided by the water ring vacuum pump, and the water ring vacuum pump is subjected to constant pressure frequency conversion control to control the vacuum degree in the vacuum pipe 7). Under the action of vacuum, the vertical check valve 2 is opened, and the inner cavity of the floor drain body 1 will be in a negative pressure state at all times;

[0051] 2) Do not turn on the floor drain switch (the floor drain switch is not shown and is installed in the clean room), and the floor drain is not in use; when the floor drain is not in use, even if the floor drain cover 02 (see Figure 5 ) and floor drain body 01 (see Figure 5 ) fails, and perhaps the seal of the floor drain isolation valve 3 also fails. The present invention can also completely isolate the environment outside the sewage pipe from the clean room under the action of vacuum;

[0052] 3) Turn on the floor drain switch and use the floor drain to drain or sterilize the floor drain. At this time, the floor drain isolation valve 3 and the floor drain top cover 02 (see Figure 5 ) are opened synchronously. In this state, even if the gas in the environment outside the sewage pipe breaks through the water seal and gas goes up, the upward gas will be sucked away by the vacuum under the action of vacuum and will not enter the clean room to cause pollution;

[0053] 4) After using the floor drain, close the floor drain switch and remove the floor drain isolation valve 3 and floor drain top cover 02 (see Figure 5 ) is closed synchronously, and the floor drain system returns to an unused state;

[0054] It can be seen that in addition to adopting compulsory isolation measures (compulsory isolation measures refer to installing a floor drain isolation valve 3 and installing a floor drain top cover sealing ring 03), the present invention also introduces vacuum, and the introduction of vacuum greatly improves the safety of the floor drain in the clean room and has the characteristics of process controllability;

[0055] It should be noted that, in addition to being installed on the floors of various clean rooms to form a controllable floor drain system, the present invention can also be installed on various wash basins and wash basins in the clean room, and has the same isolation effect.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A barrier type anti-pollution clean floor drain, characterized by: The invention comprises a floor drain body (1), a check valve (2), a floor drain isolation valve (3), a water trap (4), a sewage pipe (5), a pressure sensor (6) and a vacuum pipe (7); the floor drain body (1) is installed on the floor (8) of a clean room, an elbow is connected between the floor drain body (1) and the vertical check valve (2), the floor drain body (1) is connected to the floor drain isolation valve (3), and the outlet end of the floor drain isolation valve (3) is connected to the water trap (4); the outlet end of the water trap (4) is connected to the sewage pipe (5), the outlet end of the vertical check valve (2) is connected to the vacuum pipe (7), and the pressure sensor (6) is installed on the vacuum pipe (7) through a tee; the floor drain body (1) comprises a floor drain body (01), a floor drain top cover (02), a lower port (08) of the floor drain body and a floor drain top cover (03). The side port (09) of the drain body and the lower port (08) of the drain body are connected to the drain isolation valve (3); an elbow is connected between the side port (09) of the drain body and the vertical check valve (2); a sealing groove of the drain top cover (02) is inlaid with a top cover sealing ring (03); the bottom of the drain top cover (02) is integrally connected to a guide rod (04) by threading; a guide rod push head (06) is arranged at the end of the guide rod (04); the guide rod (04) and the guide rod push head (06) are threadedly connected; a compression spring (05) is arranged between the guide rod push head (06) and the drain top cover (02); and the compression spring (05) is sleeved on the guide rod (04); an orifice plate (07) is arranged inside the drain body (01); and the orifice plate (07) is detachably arranged on the guide rod (04).

2. The barrier type anti-pollution clean floor drain according to claim 1 is characterized in that: The floor drain body (01) is provided with a guide hole (011) and a water retaining plate (010); the guide hole (011) matches the guide rod (04); and the water retaining plate (010) is located on the inner side of the floor drain body side port (09).

3. The barrier type anti-pollution clean floor drain according to claim 1 is characterized in that: The lower port (08) of the floor drain body is connected to the upper port of the floor drain isolation valve (3), the lower port of the floor drain isolation valve (3) is connected to the upper port of the water trap (4), the side port (09) of the floor drain body is connected to the front end of the vertical check valve (2) through an elbow; the other end of the elbow is connected to the vertical check valve (2); the outlet end of the vertical check valve (2) is connected to the vacuum pipeline (7); and the pressure sensor (6) is installed on the vacuum pipeline (7) through a tee.

4. The method for using the barrier-type anti-pollution clean floor drain according to claim 1, characterized in that: 1) maintaining the vacuum state of the vacuum pipe (7) at all times, providing vacuum through a water ring vacuum pump, and implementing constant pressure frequency conversion control on the water ring vacuum pump to control the vacuum degree in the vacuum pipe (7). Under the action of vacuum, the vertical check valve (2) is opened, and the inner cavity of the floor drain body (1) is always in a negative pressure state; 2) The floor drain switch is not turned on and the floor drain is in an unused state. When the floor drain is not in use, even if the seal between the floor drain top cover (02) and the floor drain body (01) fails, or the seal of the floor drain isolation valve (3) also fails, the environment outside the sewage pipe can be completely isolated from the clean room under the action of vacuum; 3) Turn on the floor drain switch and use the floor drain to discharge or sterilize the floor drain. At this time, the floor drain isolation valve (3) and the floor drain top cover (02) are opened synchronously. In this state, even if the gas in the environment outside the sewage pipe breaks through the water seal and gas rises, the upward gas will be sucked away by the vacuum under the action of vacuum and will not enter the clean room to cause pollution; 4) After the floor drain is used, the floor drain switch is turned off, and the floor drain isolation valve (3) and the floor drain top cover (02) are closed synchronously, and the floor drain system returns to an unused state.

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