Steam type lithium bromide refrigerating unit filter

Abstract

The utility model discloses a steam type lithium bromide refrigerating unit filter, and relates to the technical field related to refrigeration. The filter comprises a seamless steel pipe I, a seamless steel pipe II, a branch pipe, a backwashing pipe and a filter screen, one end of the seamless steel pipe II penetrates through the end part of the seamless steel pipe I and extends into the seamless steel pipe I, and the backwashing pipe and the branch pipe are welded and fixed on the periphery of the seamless steel pipe I in a penetrating manner; a framework is fixed to the end, away from the second seamless steel pipe, of the filtering port, the filtering port and the framework are jointly sleeved with a filtering net, and a binding belt is bound to the periphery of the filtering net outside the filtering port. One end of the backwashing pipe away from the seamless steel pipe I is screwed with a sealing cover. Through the arrangement of the seamless steel pipe I, the seamless steel pipe II, the filter screen and the backwashing pipe, the problems that chilled water lacks impurity removal and filtration treatment and is easy to block a copper pipe, and a filter part needs to frequently replace a filter material and cannot be used for a long time are solved.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration-related technology, and in particular relates to a steam-type lithium bromide refrigeration unit filter. Background Technology

[0002] A vapor-type lithium bromide absorption chiller is a device that utilizes the hygroscopic property of lithium bromide solution to absorb heat and generate cold air. It requires a vacuum environment to operate, using lithium bromide solution as the absorbent and water as the refrigerant. The advantage of this chiller is that it uses low-temperature water for refrigeration, making it both economical and environmentally friendly, without polluting the environment. However, the following drawbacks still exist in the vapor-type lithium bromide refrigeration process:

[0003] The copper tubes inside the evaporator and condenser are one of the key components. If there are many impurities in the chilled water, they can easily clog the inside of the copper tubes. This results in low equipment cooling efficiency and high maintenance costs. Therefore, it is necessary to treat the chilled water by removing impurities.

[0004] Secondly, if it is necessary to filter and remove impurities from chilled water, corresponding filter media must be added. After long-term use, the filter media needs to be replaced. However, because copper pipes and other materials are small in size, the filter part is not easy to replace and the replacement is too troublesome. It is impossible to achieve the effect of long-term use without replacing the filter media. Utility Model Content

[0005] The purpose of this utility model is to provide a steam-type lithium bromide refrigeration unit filter. By setting up a seamless steel pipe I, a seamless steel pipe II, a filter screen, and a backwash pipe, it solves the problems of lack of impurity removal filtration for chilled water, easy clogging of copper pipes, and the need for frequent replacement of filter media in the filtration section, which prevents long-term use.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a steam-type lithium bromide refrigeration unit filter, including a seamless steel pipe I, a seamless steel pipe II, a branch pipe, a backwash pipe, and a filter screen. One end of the seamless steel pipe II passes through the end of the seamless steel pipe I and extends into its interior. The backwash pipe and the branch pipe are welded and fixed through the outer periphery of the seamless steel pipe I. The end of the seamless steel pipe II that extends into the seamless steel pipe I is provided with a filter port, and a frame is fixed at the end of the filter port away from the seamless steel pipe II. A filter screen is fitted over both the filter port and the frame, and the outer periphery of the filter screen outside the filter port is tied with a cable tie.

[0008] The port at the connection between the backwash pipe and the seamless steel pipe faces the filter screen, and a cap is screwed onto the end of the backwash pipe away from the seamless steel pipe.

[0009] Furthermore, a threaded head is fixed at one end of the cap near the backwash tube, and a sealing gasket is provided on the threaded head. A knob is fixed at the other end of the cap away from the backwash tube. A threaded groove is opened in the port of the backwash tube away from the seamless steel pipe. The cap is screwed into the threaded groove through the threaded head and connected to the backwash tube, and the sealing gasket contacts the port of the backwash tube.

[0010] Furthermore, a threaded ring is fixed on the inner wall of the port of the seamless steel pipe I through the seamless steel pipe II, and a limit ring is also fixed on the outer periphery of the seamless steel pipe II and a sealing gasket I is sleeved thereon, and the sealing gasket I is attached to the end of the seamless steel pipe I, with both the limit ring and the sealing gasket I located outside the seamless steel pipe I.

[0011] Furthermore, the outer periphery of the seamless steel pipe II is also provided with external threads, and the external threads of the seamless steel pipe II are screwed into the threaded ring. The external threads are closer to the seamless steel pipe I than to the sealing gasket I.

[0012] Furthermore, a control valve is fixed on the outer peripheral side of the seamless steel pipe 2, and the control valve 1 is further away from the seamless steel pipe 1 than the limiting ring.

[0013] Furthermore, a control valve two is fixed to the outer periphery of the branch pipe, and the connection port between the branch pipe and the seamless steel pipe one faces the outer periphery of the seamless steel pipe two.

[0014] Furthermore, the frame includes support rods fixed in a ring array outside the filter port, and all the support rods are fixed with a common ring at the end away from the filter port.

[0015] This utility model has the following beneficial effects:

[0016] This invention solves the problems of insufficient impurity filtration and easy clogging of copper pipes in chilled water by setting up seamless steel pipe 1, seamless steel pipe 2, and a filter screen. First, chilled water enters from the end of seamless steel pipe 2 near control valve 1. After being filtered by the filter screen, it enters seamless steel pipe 2. At this time, the backwash pipe is sealed and closed. Control valve 2 is opened, and chilled water is discharged from the branch pipe to the corresponding copper pipe. The two pipelines are connected by the filter screen, which filters impurities in the chilled water, improves the equipment's cooling efficiency, and reduces equipment maintenance costs. At the same time, by setting control valves on the pipelines, the flow rate and pressure of chilled water can be easily controlled, ensuring the stability and reliability of production.

[0017] This invention solves the problem of frequent filter media replacement and limited long-term use of the filtration system by setting a backwash pipe. After a period of use, the cover is opened, the backwash pipe is connected to the external cleaning water pipeline, and control valve two is closed. The backwash pipe flushes the cleaning water to the outer periphery of the filter screen, passes through the filter screen, and enters the seamless steel pipe one. At this time, control valve one is in the open state. The backwash water washes off the impurities on the filter screen and enters the seamless steel pipe two for discharge, completing the backwashing operation. It can be used for a long time without frequent filter media replacement.

[0018] The seamless steel pipe 1 and seamless steel pipe 2 of this utility model are detachable. When the filter material needs to be replaced after long-term use, seamless steel pipe 2 can be rotated to unscrew it from seamless steel pipe 1, the cable tie and filter screen can be removed for replacement, and then it can be screwed back in. Replacement is relatively convenient.

[0019] This utility model features a seamless steel pipe I and a seamless steel pipe II, with the filter part fitted onto the seamless steel pipe II and extending into the seamless steel pipe I. The overall structure is compact and easy to install, making it suitable for installation in small spaces without taking up much installation space, thus possessing high practical value. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 A perspective view of a steam-type lithium bromide refrigeration unit filter;

[0022] Figure 2 for Figure 1 A stereoscopic view from another perspective;

[0023] Figure 3 This is an assembly diagram of a seamless steel pipe after it has been cut open.

[0024] Figure 4 This is a cross-sectional view of a seamless steel pipe.

[0025] Figure 5 This is a structural diagram of seamless steel pipe II;

[0026] Figure 6 Disassembly diagram of the backwash tube and cap;

[0027] Figure 7 This is a cross-sectional view showing the connection between the seamless steel pipe and the filter screen.

[0028] Figure 8 This is a diagram showing the connection between the seamless steel pipe and the skeleton.

[0029] Figure label:

[0030] 1. Seamless steel pipe one; 101. Threaded ring; 2. Seamless steel pipe two; 201. Control valve one; 202. Limiting ring; 2021. Sealing gasket one; 203. External thread; 204. Filter port; 205. Skeleton; 2051. Support rod; 2052. Circular ring; 3. Branch pipe; 301. Control valve two; 4. Backwash pipe; 401. Cap; 4011. Threaded head; 4012. Sealing gasket two; 4013. Knob; 402. Threaded groove; 5. Filter screen; 501. Cable tie. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0032] Please see Figure 1-8 As shown, this utility model is a steam-type lithium bromide refrigeration unit filter, including a seamless steel pipe 1, a seamless steel pipe 2, a branch pipe 3, a backwash pipe 4, and a filter screen 5. One end of the seamless steel pipe 2 passes through the end of the seamless steel pipe 1 and extends into its interior. The backwash pipe 4 and the branch pipe 3 are welded and fixed through the outer periphery of the seamless steel pipe 1. The end of the seamless steel pipe 2 that extends into the seamless steel pipe 1 is provided with a filter port 204, and a frame 205 is fixed at the end of the filter port 204 away from the seamless steel pipe 2. The filter screen 5 is fitted together on the filter port 204 and the frame 205, and the outer periphery of the filter screen 5 outside the filter port 204 is tied with a cable tie 501.

[0033] First, install the filter screen 5 on the filter port 204 and the frame 205. Then, use the cable tie 501 to tighten the filter screen 5. Next, insert the seamless steel pipe 2 containing the filter screen 5 into the seamless steel pipe 1 and tighten it to complete the connection. The chilled water enters from the end of the seamless steel pipe 2 away from the seamless steel pipe 1. After being filtered by the filter screen 5, it enters the seamless steel pipe 2. At this time, the backwash pipe 4 is sealed and closed, and the chilled water is discharged from the branch pipe 3 to the corresponding copper pipe.

[0034] The port at the connection between the backwash pipe 4 and the seamless steel pipe 1 faces the filter screen 5, and the end of the backwash pipe 4 away from the seamless steel pipe 1 is screwed with a cap 401. When backwashing is not required, the backwash pipe 4 is sealed by the cap 401. When backwashing is required, the cap 401 is opened, and the backwash pipe 4 is connected to the external cleaning water pipeline. The backwash pipe 4 flushes the cleaning water to the outer periphery of the filter screen 5, passes through the filter screen 5 and enters the seamless steel pipe 1. The backwash water washes off the impurities on the filter screen 5 and enters the seamless steel pipe 2 and is discharged, completing the backwashing operation.

[0035] A threaded head 4011 is fixed to one end of the cover 401 near the backwash tube 4, and a sealing gasket 4012 is provided on the outer sleeve of the threaded head 4011. A knob 4013 is fixed to the end of the cover 401 away from the backwash tube 4. A threaded groove 402 is provided in the port of the backwash tube 4 away from the seamless steel pipe 1. The cover 401 is screwed into the threaded groove 402 through the threaded head 4011 and connected to the backwash tube 4, and the sealing gasket 4012 contacts the port of the backwash tube 4.

[0036] The cap 401 is rotated by the knob 4013, so that the threaded head 4011 is screwed into the threaded groove 402 and connected to the backwash pipe 4, thus sealing the backwash pipe 4. The sealing gasket 4012 is used to maintain the seal. When backwashing is required, the cap 401 is rotated in the opposite direction to disengage the cap 401 from the backwash pipe 4. The backwash pipe 4 is then connected to the external cleaning water pipeline for backwashing.

[0037] A threaded ring 101 is fixed on the inner wall of the port of the seamless steel pipe 1 through the seamless steel pipe 2. A limit ring 202 is also fixed on the outer periphery of the seamless steel pipe 2 and a sealing gasket 2021 is fitted on it. The sealing gasket 2021 fits against the end of the seamless steel pipe 1. Both the limit ring 202 and the sealing gasket 2021 are outside the seamless steel pipe 1.

[0038] The outer periphery of the seamless steel pipe 2 is also provided with an external thread 203, and the external thread 203 on the outer side of the seamless steel pipe 2 is screwed into the threaded ring 101. The external thread 203 is closer to the seamless steel pipe 1 than the sealing gasket 2021.

[0039] After inserting seamless steel pipe 2 into seamless steel pipe 1, until the external thread 203 contacts the threaded ring 101, rotate seamless steel pipe 2 to screw the external thread 203 into the threaded ring 101 until the sealing gasket 2021 is tightly attached to the end of the seamless steel pipe, and the limiting ring 202 is used to restrict it. When it can no longer be rotated, it means that it has been tightened in place.

[0040] A control valve 201 is also fixed on the peripheral side of the seamless steel pipe 2 outside the seamless steel pipe 1, and the control valve 201 is further away from the seamless steel pipe 1 than the limit ring 202.

[0041] A control valve 301 is fixed to the outer periphery of branch pipe 3, and the connection port between branch pipe 3 and seamless steel pipe 1 faces the outer periphery of seamless steel pipe 2.

[0042] By installing control valves on the pipeline, the flow rate and pressure of chilled water can be easily controlled, ensuring the stability and reliability of production.

[0043] The frame 205 includes support rods 2051 fixed in a ring array outside the filter port 204, and a circular ring 2052 is fixed to the end of all support rods 2051 away from the filter port 204. The support rods 2051 and the circular ring 2052 form the frame 205 structure, which supports the filter screen 5 and makes the filter screen 5 form a columnar structure. Its end face and periphery can be filtered, increasing the filtration area and accelerating the filtration and impurity removal process.

[0044] The specific working principle of this utility model is as follows: First, the support rod 2051 and the ring 2052 form a skeleton 205 structure to support the filter screen 5. The filter screen 5 is sleeved on the skeleton 205 and the filter port 204, so that the filter screen 5 forms a columnar structure. Then, the filter screen 5 is tightened with cable ties 501. Then, the seamless steel pipe 2 containing the filter screen 5 is inserted into the seamless steel pipe 1 until the external thread 203 contacts the threaded ring 101. The seamless steel pipe 2 is rotated so that the external thread 203 is screwed into the threaded ring 101 until the sealing gasket 2021 is tightly attached to the port of the seamless steel pipe. The limiting ring 202 is used to restrict it. When it can no longer be rotated, it means that it has been tightened in place. At this time, the filtration work can be carried out.

[0045] During filtration, chilled water enters from the end of seamless steel pipe 2 near control valve 201. At this time, control valve 201 is opened. After being filtered by filter screen 5, the chilled water enters seamless steel pipe 2. At this time, backwash pipe 4 is blocked and closed by cap 401. Control valve 201 is opened, and chilled water is discharged from branch pipe 3 to the corresponding copper pipe.

[0046] During backwashing, close control valve 2 301, open cover 401, connect backwash pipe 4 to external cleaning water pipeline, close control valve 2 301, and backwash pipe 4 will flush cleaning water to the outer periphery of filter screen 5, pass through filter screen 5 and enter seamless steel pipe 1. At this time, control valve 1 201 is in the open state. The backwash water washes off the impurities on filter screen 5 and enters seamless steel pipe 2 2 and is discharged, completing the backwashing operation.

[0047] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A filter for steam type lithium bromide refrigerating unit, comprising a seamless steel pipe one (1), a seamless steel pipe two (2), a branch pipe (3), a backwashing pipe (4) and a filter screen (5), characterized in that: One end of the seamless steel pipe two (2) penetrates the end of the seamless steel pipe one (1) and extends into the inside, the outer periphery of the seamless steel pipe one (1) is fixed with a backwashing pipe (4) and a branch pipe (3) through penetrating welding, one end of the seamless steel pipe two (2) extending into the seamless steel pipe one (1) is provided with a filtering port (204), and the filtering port (204) is fixed with a framework (205) away from the end of the seamless steel pipe two (2), the filtering port (204) and the framework (205) are jointly sleeved with a filter screen (5) outside, and the filter screen (5) outside the filtering port (204) is tightly tied with a tie (501) around the outer periphery. The port of the backwashing pipe (4) at the connection with the seamless steel pipe one (1) faces the filter screen (5), and a cover (401) is screwed on one end of the backwashing pipe (4) away from the seamless steel pipe one (1).

2. A filter for a lithium bromide steam chiller unit according to claim 1, wherein: The cover (401) is fixed with a threaded head (4011) at one end close to the backwashing pipe (4), and a second sealing gasket (4012) is sleeved outside the threaded head (4011), the cover (401) is fixed with a knob (4013) at one end away from the backwashing pipe (4), a threaded groove (402) is formed in the port of the backwashing pipe (4) away from the seamless steel pipe one (1), the cover (401) is connected with the backwashing pipe (4) by screwing the threaded head (4011) into the threaded groove (402), and the second sealing gasket (4012) contacts the port of the backwashing pipe (4).

3. A filter for a lithium bromide steam chiller unit as defined in claim 1, wherein: A threaded ring (101) is fixed on the inner wall of the port of the seamless steel pipe one (1) penetrating the seamless steel pipe two (2), a limiting ring (202) is further fixed on the outer periphery of the seamless steel pipe two (2) and sleeved with a first sealing gasket (2021), and the first sealing gasket (2021) abuts against the end of the seamless steel pipe one (1), both the limiting ring (202) and the first sealing gasket (2021) are located outside the seamless steel pipe one (1).

4. A filter for a lithium bromide steam chiller unit as defined in claim 3, wherein: An external thread (203) is further arranged on the outer periphery of the seamless steel pipe two (2), and the external thread (203) outside the seamless steel pipe two (2) is screwed into the threaded ring (101), and the external thread (203) is closer to the seamless steel pipe one (1) than the first sealing gasket (2021).

5. A filter for a lithium bromide steam chiller unit as defined in claim 3, wherein: A control valve one (201) is further fixed on the circumferential side of the seamless steel pipe two (2) outside the seamless steel pipe one (1), and the control valve one (201) is farther away from the seamless steel pipe one (1) than the limiting ring (202).

6. A filter for a lithium bromide steam chiller unit as defined in claim 1, wherein: A control valve two (301) is fixed on the outer periphery of the branch pipe (3), and the connecting port of the branch pipe (3) and the seamless steel pipe one (1) faces the outer periphery of the seamless steel pipe two (2).

7. A filter for a lithium bromide steam chiller unit as defined in claim 1, wherein: The framework (205) includes a plurality of support rods (2051) fixed in an annular array outside the filtering port (204), and the ends of all the support rods (2051) away from the filtering port (204) are jointly fixed with a circular ring (2052).

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