Filtering device for medium inlet of plate and shell semi-volumetric heat exchanger

Abstract

The present invention discloses a filtering device for the medium inlet of a plate and shell semi-volumetric heat exchanger, comprising: a mounting tube, which is constructed as a tube body structure with a through cavity; a mounting ring, which is arranged in the mounting tube; a mounting rod, which is connected to the mounting ring; a filter element, which is arranged at one end of the mounting rod; a stirring rod assembly, which is arranged on the side wall of the mounting rod; a scraper rod, which is arranged on one side of the filter element; a motor, which is arranged on the mounting rod; the motor can drive the stirring rod assembly or the filter element to rotate, and the filter element rotates relative to the scraper rod; a dosing port and a liquid inlet are provided on the mounting tube, and the dosing port and the liquid inlet are respectively located on both sides of the filter element; a liquid outlet is also provided on the side wall of the mounting tube; the present application can reduce the entry of impurities from the inlet and can make the descaling agent fully mixed and enter the heat exchanger to improve the descaling effect on the inside of the heat exchanger.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a filtering device for a medium inlet of a plate-shell semi-volumetric heat exchanger. Background Art

[0002] The plate and shell heat exchanger is a heat exchanger that uses plate and tube as heat transfer elements. It is mainly composed of a plate and tube bundle and a shell. The contact points of the cold-pressed pairs of plates are tightly welded together to form a plate and tube containing multiple flat flow channels. Many plate and tubes are arranged in a certain order. In order to maintain the spacing between the plate and tubes, metal strips are inserted at both ends of adjacent plate and tubes and welded together with the plate and tubes, so that many plate and tubes are firmly connected together to form a plate and tube bundle. The plate and tube bundle is assembled in the shell, and the end face of the plate and tube bundle presents several flat flow channels. The heat exchange medium flowing in the plate and tube bundle is called the tube-side medium, and the heat exchange medium flowing outside the plate and tube bundle is called the shell-side medium.

[0003] Compared with the plate heat exchanger, the plate and shell heat exchanger has a more complicated manufacturing process, a large amount of welding and high welding requirements. The thermal stress during welding and the thermal stress during operation can easily cause the plate and tube bundle to deform, resulting in leakage of the heat exchange medium. Therefore, the promotion and application of the plate and shell heat exchanger are subject to certain restrictions. In addition, the tube flow channel of the plate and tube bundle is short, and the residence time of the tube medium in the plate and shell heat exchanger is short, which restricts the heat exchange efficiency. The tube flow channel section of the plate and tube bundle is large, the flow velocity of the tube medium in the tube of the plate and tube bundle is reduced, and the tube medium is easy to scale in the plate and tube bundle, further reducing the heat exchange efficiency of the plate and shell heat exchanger.

[0004] The plate and tube bundles of the plate and shell heat exchanger are welded together and cannot be disassembled into single heat exchange plates for cleaning like a plate heat exchanger. It is difficult to clean the tube-side flow channels and shell-side flow channels of the plate and tube bundle of the plate and shell heat exchanger. Summary of the invention

[0005] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a filtering device for a medium inlet of a plate and shell semi-volumetric heat exchanger.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a filtering device for the medium inlet of a plate and shell semi-volumetric heat exchanger, comprising: a mounting tube, which is constructed as a tube body structure with a through cavity; a mounting ring, which is arranged in the mounting tube; a mounting rod, which is connected to the mounting ring; a filter element, which is arranged at one end of the mounting rod; a stirring rod assembly, which is arranged on the side wall of the mounting rod; a scraper rod, which is arranged on one side of the filter element; a motor, which is arranged on the mounting rod; the motor can drive the stirring rod assembly or the filter element to rotate, and the filter element rotates relative to the scraper rod; a dosing port and a liquid inlet are provided on the mounting tube, and the dosing port and the liquid inlet are respectively located on both sides of the filter element; and a liquid outlet is also provided on the side wall of the mounting tube.

[0008] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: an electric push rod, which is arranged on the mounting rod; a transmission shaft, which is connected to the output shaft of the motor; the motor is arranged on the piston rod of the electric push rod, and the mounting rod is provided with a mounting cavity for accommodating the electric push rod and the motor.

[0009] Furthermore, the stirring rod assembly includes: a swivel, which is arranged on the mounting rod; a movable ring, which is arranged on one side of the swivel; a first connecting rod, one end of which is hinged to the swivel; a second connecting rod, one end of which is hinged to the movable ring; the first connecting rod and the second connecting rod are hinged at one point, and the mounting rod is provided with a ring groove for accommodating the swivel and the movable ring.

[0010] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: a first push plate, arranged in the ring groove; a connecting ring, connected to the first push plate; the first push plate is on one side of the movable ring, a transmission cavity is provided at one end of the installation cavity, the connecting ring is in the transmission cavity, and the transmission shaft is passed through the connecting ring.

[0011] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: a transmission ring, arranged in the transmission cavity; a first transmission wheel, used to drive the transmission ring and the rotating ring; a first transmission groove communicating with the ring groove is provided on the side wall of the transmission cavity, and the first transmission wheel is arranged in the first transmission groove.

[0012] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: a connecting block, arranged in the transmission cavity; a third connecting rod, arranged on the connecting block; the third connecting rod is a polygonal structure, and a connecting hole corresponding to the third connecting rod is provided on the filter element.

[0013] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: a plurality of bristles arranged on the scraper rod; a first return spring arranged on the side wall of the scraper rod; the bristles are against the surface of the filter element, and a first movable groove for the scraper rod to move is provided on the mounting rod, and the first return spring is against the inner wall of the first movable groove.

[0014] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: a second transmission wheel, which is in transmission cooperation with the connecting block; a third transmission wheel, which is in transmission cooperation with the second transmission wheel; a fourth transmission wheel, which is connected to the third transmission wheel; the fourth transmission wheel is a semicircular gear, and the fourth transmission wheel is in transmission cooperation with the scraper rod.

[0015] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: a connecting shaft, arranged on the third transmission wheel; a second push plate, arranged on the connecting block; a second return spring, arranged on the second push plate; and the second push plate is on the connecting shaft.

[0016] Furthermore, the filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: a partition, which is arranged in the installation tube; a baffle, which is arranged on the partition; a plurality of through grooves are arranged on the partition, and the partition is located on the liquid inlet side.

[0017] The invention is beneficial in that it provides a filtering device for the medium inlet of a plate and shell semi-volumetric heat exchanger, which reduces the entry of impurities from the inlet and allows the descaling agent to be fully mixed and enter the heat exchanger to improve the descaling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0019] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0020] In the attached picture:

[0021] Figure 1 The figure is a schematic structural diagram of a filtering device for a medium inlet of a plate and shell semi-volumetric heat exchanger in one embodiment of the present invention.

[0022] Figure 2 for Figure 1 A cross-sectional view of a mounting pipe of a filter device for a medium inlet of a plate and shell semi-volumetric heat exchanger in the illustrated embodiment.

[0023] Figure 3 for Figure 2 Enlarged view of point A in .

[0024] Figure 4 for Figure 1 A cross-sectional view of a first movable groove of a filter device for a medium inlet of a plate and shell semi-volumetric heat exchanger in the illustrated embodiment.

[0025] Figure 5for Figure 4 Enlarged view of point B in .

[0026] Figure 6 for Figure 1 A cross-sectional view of a partition plate of a filter device for a medium inlet of a plate and shell semi-volumetric heat exchanger in the illustrated embodiment.

[0027] Figure 7 for Figure 1 A cross-sectional view of a stirring rod assembly for a medium inlet of a plate and shell semi-volumetric heat exchanger in the illustrated embodiment.

[0028] The meanings of the reference numerals in the figures are as follows:

[0029] 101, mounting tube; 1011, first connecting part; 102, mounting ring; 1021, second connecting part; 103, liquid inlet; 104, dosing port; 105, connecting box; 106, mounting rod; 107, fourth connecting rod; 108, cover plate; 109, liquid outlet; 110, sealing plate; 111, electric push rod; 112, motor; 113, transmission shaft; 114, filter element; 115, scraper rod; 116, brush hair; 117, partition; 118, baffle; 1181, fifth connecting spring; 1182, fifth return spring; 120, swivel; 121, first connecting rod; 1 22. second connecting rod; 123. movable ring; 124. first push plate; 1241. connecting plate; 1242. connecting ring; 125. movable block; 1251. connecting spring; 126. connecting block; 1261. third connecting rod; 127. latch; 128. second transmission wheel; 129. third transmission wheel; 130. fourth transmission wheel; 131. third return spring; 132. second push plate; 133. second return spring; 134. transmission ring; 135. first transmission wheel; 136. first return spring; 137. convex rod; 138. second electromagnet; 139. rubber sleeve. DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0031] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0032] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0034] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] like Figure 1-7As shown, a filter device for the medium inlet of a plate and shell semi-volumetric heat exchanger includes a mounting tube 101, a mounting ring 102, a mounting rod 106, a filter element 114, a stirring rod assembly, a scraper rod 115 and a motor 112. The mounting tube 101 is constructed as a tube body structure with a through cavity. A first connecting portion 1011 is provided at one end of the mounting tube 101. The first connecting portion 1011 is an annular flange provided on the end surface of the mounting tube 101. A plurality of first threaded holes are provided on the first connecting portion 1011. The mounting tube 101 passes through The first connection part 1011 is connected to the medium inlet of the heat exchanger; the mounting ring 102 is connected to the mounting pipe 101 through a thread, and a second connection part 1021 is provided at one end of the mounting ring 102. The second connection part 1021 is an annular flange provided on the end surface of the mounting ring 102. A plurality of second threaded holes are provided on the second connection part 1021. The water pipe is connected to the second connection part 1021 to transport the medium to the mounting pipe 101; the mounting rod 106 is connected to the mounting ring 102 through a fourth connecting rod 107; the filter element 114 is arranged at one end of the mounting rod 106, the filter element 114 is a disc-shaped filter plate, and the cross section of the filter element 114 corresponds to the inner diameter of the mounting tube 101; the stirring rod assembly is arranged on the side wall of the mounting rod 106; the scraper rod 115 is arranged on one side of the filter element 114; the motor 112 is arranged on the mounting rod 106; the motor 112 can drive the stirring rod assembly or the filter element 114 to rotate, and the filter element 114 rotates relative to the scraper rod 115; the mounting tube 101 is provided with a dosing port 104 and a liquid inlet 103, and the dosing port 104 and the liquid inlet 103 Cover plates 108 are respectively provided on both sides of the filter element 114, and the dosing port 104 and the liquid inlet 103 are respectively provided; a liquid outlet 109 is also provided on the side wall of the mounting tube 101, and a sealing plate 110 is provided on the liquid outlet 109, and the sealing plate 110 closes or opens the liquid outlet 109 through electromagnet control; when the device filters the medium entering the heat exchanger, the cover plate 108 closes the dosing port 104 and the liquid inlet 103, and the sealing plate 110 closes the liquid outlet 109, and the medium enters the heat exchanger normally from the inlet.

[0037] By using the filter element 114, the medium is filtered before entering the heat exchanger, so that impurities in the medium are filtered out and the impurities entering the heat exchanger are reduced; when it is necessary to clean the scale inside the heat exchanger, the scale cleaner is added into the installation tube 101 from the dosing port 104, and the motor 112 drives the stirring rod assembly to rotate, and the stirring rod assembly stirs the water flow in the installation tube 101, so that the scale cleaner is fully dissolved in the water, and the solution enters the heat exchanger and contacts the plate tubes, dissolving the scale on the plate tubes, thereby realizing the scale cleaning operation in the heat exchanger.

[0038] An installation cavity is provided on the installation rod 106, in which an electric push rod 111 is provided. The motor 112 is connected to the piston rod of the electric push rod 111, and a transmission shaft 113 is connected to the output shaft of the motor 112. A transmission cavity is provided at one end of the installation cavity, and the transmission shaft 113 is passed through the transmission cavity.

[0039] An annular groove is provided on the mounting rod 106, and the stirring rod assembly includes a swivel 120, a movable ring 123, a first connecting rod 121 and a second connecting rod 122. The swivel 120 is rotatably connected in the annular groove, one end of the first connecting rod 121 is hinged to the swivel 120, one end of the second connecting rod 122 is hinged to the movable ring 123, and the other ends of the first connecting rod 121 and the second connecting rod 122 are hinged at one point; the swivel 120 and the movable ring 123 are respectively located at two ends of the annular groove, and the first connecting rod 121 and the second connecting rod 122 are both in an inclined state.

[0040] Preferably, a rubber sleeve is further provided between the rotating ring and the movable ring, the first connecting rod and the second connecting rod are located in the rubber sleeve, the rubber sleeve is a tubular structure, and a plurality of grooves for the first connecting rod and the second connecting rod to extend out are provided on the side wall of the rubber sleeve; the rubber sleeve seals the annular groove, reduces impurities entering the annular groove, and improves the water quality at the water inlet of the heat exchanger; through the setting of the grooves, the first connecting rod and the second connecting rod can still protrude from the surface of the mounting rod, thereby ensuring the stirring effect of the first connecting rod and the second connecting rod on the liquid when they rotate.

[0041] A first push plate 124 is provided at one end of the annular groove. The first push plate 124 is an annular structure. A connecting plate 1241 is provided on the inner wall of the first push plate 124. A second movable groove for the connecting plate 1241 to move is provided on the side wall of the transmission cavity. The second movable groove connects the transmission cavity and the annular groove. A connecting ring 1242 is provided on the connecting plate 1241. The connecting ring 1242 is in the transmission cavity. The transmission shaft 113 is passed through the connecting ring 1242. A third movable groove is provided on the transmission shaft 113. A movable block 125 is provided in the third movable groove. A connecting spring 1251 is provided at the bottom of the movable block 125. A first electromagnet is provided at the bottom of the third movable groove. A first magnetic block is provided at the bottom of the movable block 125.

[0042] A first transmission groove communicating with the ring groove is disposed on the side wall of the transmission cavity. A transmission ring 134 is disposed in the transmission cavity. A first transmission wheel 135 for transmitting the transmission ring 134 and the rotating ring 120 is disposed in the first transmission groove.

[0043] A connecting block 126 is provided at one end of the transmission chamber. The connecting block 126 is a cylindrical structure. A second transmission groove that matches the transmission shaft 113 is provided on the connecting block 126; a third connecting rod 1261 is also provided on the connecting block 126. The third connecting rod 1261 is a polygonal structure. A connecting hole corresponding to the third connecting rod 1261 is provided on the filter element 114. The third connecting rod 1261 with a polygonal structure is used to form a non-rotating fit between the connecting block 126 and the filter element 114; a socket is provided on the third connecting rod 1261. After the third connecting rod 1261 is inserted into the connecting hole, the socket is located on the other side of the filter element 114. A latch 127 is passed through the socket. The filter element 114 is fixed to the third connecting rod 1261 by the latch 127 to ensure the connection effect between the filter element 114 and the third connecting rod 1261.

[0044] A first movable groove is provided on the mounting rod 106, and the scraper rod 115 is in the first movable groove. A plurality of bristles 116 are provided on the scraper rod 115, and the bristles 116 are against the surface of the filter element 114; a first return spring 136 is provided on the side wall of the scraper rod 115, and the first return spring 136 is against the inner wall of the first movable groove; a first movable cavity is provided on the side wall of the transmission cavity, and a second transmission wheel 128 is provided in the first movable cavity to cooperate with the connecting block 126 for transmission, and a third transmission wheel 129 and a fourth transmission wheel 130 are also provided on the top of the first movable cavity, and the third transmission wheel 129 and the fourth transmission wheel 130 are coaxially arranged, and the third transmission wheel 129 cooperates with the second transmission wheel 128 for transmission, and the fourth transmission wheel 130 is a semicircular structure, and the fourth transmission wheel 130 cooperates with the bottom surface of the scraper rod 115 for transmission; a third return spring 131 is provided on the inner wall of the first movable cavity, and one end of the third return spring 131 is against the fourth transmission wheel 130.

[0045] A fourth movable groove is provided on the side wall of the transmission chamber, and a connecting shaft is provided on the third transmission wheel 129, and the connecting shaft is passed through the fourth movable groove; a second push plate 132 is provided on the connecting block 126, and the second push plate 132 is a circular ring structure. The second push plate 132 is passed through the fourth movable groove, and a second return spring 133 is provided on the second push plate 132, and the second push plate 132 is at one end of the connecting shaft.

[0046] A partition 117 is provided in the mounting tube 101, and a second active cavity and a plurality of through slots are provided on the partition 117. A connecting box 105 communicating with the second active cavity is provided on the mounting tube 101. A plurality of baffles 118 are provided in the second active cavity, and the number of the baffles 118 corresponds to the number of the through slots. All the baffles 118 are connected via a fifth connecting rod, and the fifth connecting rod is passed through the connecting box 105. A convex rod 137 is provided on the inner wall of the connecting box 105, and a fourth reset spring is provided on the fifth connecting rod, and the fourth reset spring rests on the convex rod 137. A second electromagnet 138 is provided in the connecting box 105, and a second magnetic block corresponding to the second electromagnet 138 is provided on the fifth connecting rod.

[0047] When it is necessary to clean the inside of the heat exchanger, the dosing port 104 is opened, and the scale cleaner is added into the installation tube 101. The electric push rod 111 pushes the transmission shaft 113 to move forward, and the movable block 125 is in an extended state. The movable block 125 is against the connecting ring 1242 and pushes the connecting ring 1242 to move. The connecting ring 1242 drives the first push plate 124 to move, and the first push plate 124 pushes the movable ring 123 to move toward the rotating ring 120. The first connecting rod 121 and the second connecting rod 122 rotate and extend out from the ring groove, and one end of the transmission shaft 113 is inserted into the transmission ring 134. The motor 112 works to drive the transmission ring 134 to rotate, and the first connecting rod 121 and the second connecting rod 122 rotate with the rotating ring 120 to stir the liquid in the installation tube 101, so that the scale cleaner is fully mixed into the water flow, and the water flow mixed with the scale cleaner enters the heat exchanger to dissolve the scale in the heat exchanger.

[0048] When cleaning the filter element 114, the second electromagnet 138 is energized to attract the fifth connecting rod to move, and the baffle 118 moves with the fifth connecting rod to close the through slot. The baffle 118 and the partition 117 cooperate to close one end of the mounting tube 101, open the liquid inlet 103 and the liquid outlet 109, and the first electromagnet is energized to attract the movable block 125 to enter the third movable slot. When the electric push rod 111 pushes the transmission shaft 113 to move, the transmission shaft 113 directly passes through the connecting ring 1242, and the transmission One end of the driving shaft 113 is inserted into the second transmission groove, and water flows in from the liquid inlet 103. Since the liquid inlet 103 is located at the back of the filter element 114, the water flows in from the liquid inlet 103 backwashes the filter element 114. The motor 112 drives the filter element 114 to rotate. When the filter element 114 rotates, it contacts the bristles 116, and the bristles 116 are used to scrape off impurities on the surface of the filter element 114; the water flows impact the filter element 114 from the back, and cooperates with the bristles 116 to clean the filter element 114.

[0049] After the filter element 114 is cleaned, the electric push rod 111 drives the transmission shaft 113 to continue to move forward. The transmission shaft 113 pushes the connecting block 126 against the end surface of the second transmission groove to move. The second push plate 132 moves with the connecting block 126 to push the connecting shaft to move, and the fourth transmission wheel 130 moves to the bottom of the scraper rod 115. At this time, due to the movement of the connecting block 126, the filter element 114 is disengaged from the bristles 116. When the motor 112 drives the transmission shaft 113 to rotate, the second transmission wheel 128 driven by the connecting block 126 rotates, and the fourth transmission wheel 130 intermittently contacts the scraper rod 115 to drive the scraper rod 115 to rotate. The scraper rod 115 reciprocates in the first movable groove under the action of the fourth transmission wheel 130 and the second return spring 133, and the impurities on the bristles 116 are shaken off with the water flow, and the bristles 116 are cleaned to ensure the cleaning effect of the bristles 116 on the filter element 114.

[0050] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A filter device for the medium inlet of a plate and shell semi-volumetric heat exchanger, characterized in that: include: The installation tube is constructed as a tube body structure having a through cavity; A mounting ring, disposed in the mounting tube; A mounting rod connected to the mounting ring; A filter element, arranged at one end of the mounting rod; A stirring rod assembly, arranged on the side wall of the mounting rod; A scraper rod is arranged on one side of the filter element; A motor, arranged on the mounting rod; The motor can drive the stirring rod assembly or the filter element to rotate, and the filter element rotates relative to the scraper rod; the mounting tube is provided with a dosing port and a liquid inlet, and the dosing port and the liquid inlet are respectively located on both sides of the filter element; the side wall of the mounting tube is also provided with a liquid outlet; The filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: An electric push rod, arranged on the mounting rod; A transmission shaft connected to the output shaft of the motor; The motor is arranged on the piston rod of the electric push rod, and the mounting rod is provided with a mounting cavity for accommodating the electric push rod and the motor; The stirring rod assembly comprises: A swivel, disposed on the mounting rod; A movable ring, arranged on one side of the rotating ring; A first connecting rod, one end of which is hinged to the swivel; A second connecting rod, one end of which is hinged to the movable ring; The first connecting rod and the second connecting rod are hinged at one point, and the mounting rod is provided with a ring groove for accommodating the rotating ring and the movable ring; The filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: A first push plate, disposed in the annular groove; A connecting ring connected to the first push plate; The first push plate is located at one side of the movable ring, a transmission cavity is provided at one end of the installation cavity, the connecting ring is located in the transmission cavity, and the transmission shaft is passed through the connecting ring; The transmission shaft is provided with a third movable groove, a movable block is provided in the third movable groove, a connecting spring is provided at the bottom of the movable block, a first electromagnet is provided at the bottom of the third movable groove, and a first magnetic block is provided at the bottom of the movable block; The filtering device for the medium inlet of the plate and shell semi-volumetric heat exchanger also includes: A transmission ring, disposed in the transmission cavity; A first transmission wheel, used for transmitting the transmission ring and the rotating ring; A first transmission groove communicating with the annular groove is provided on the side wall of the transmission cavity, and the first transmission wheel is arranged in the first transmission groove.

2. The filter device for the medium inlet of the plate and shell semi-volumetric heat exchanger according to claim 1 is characterized in that: Also includes: A connecting block is arranged in the transmission cavity; A third connecting rod, provided on the connecting block; The third connecting rod is a polygonal structure, and the filter element is provided with a connecting hole corresponding to the third connecting rod.

3. The filter device for the medium inlet of the plate and shell semi-volumetric heat exchanger according to claim 2 is characterized in that: Also includes: A plurality of bristles are arranged on the scraper rod; A first return spring, disposed on the side wall of the scraper rod; The bristles are pressed against the surface of the filter element, a first movable groove for the scraper rod to move is provided on the mounting rod, and the first return spring is pressed against the inner wall of the first movable groove.

4. The filter device for the medium inlet of the plate and shell semi-volumetric heat exchanger according to claim 2 is characterized in that: Also includes: A second transmission wheel, in transmission cooperation with the connecting block; A third transmission wheel, in transmission cooperation with the second transmission wheel; a fourth transmission wheel connected to the third transmission wheel; The fourth transmission wheel is a semicircular gear, and the fourth transmission wheel is in transmission cooperation with the scraper rod.

5. The filter device for the medium inlet of the plate and shell semi-volumetric heat exchanger according to claim 4 is characterized in that: Also includes: A connecting shaft, arranged on the third transmission wheel; A second push plate, disposed on the connecting block; A second return spring, disposed on the second push plate; The second push plate is located on the connecting shaft.

6. The filter device for the medium inlet of the plate and shell semi-volumetric heat exchanger according to claim 1 is characterized in that: Also includes: a partition plate, arranged in the mounting tube; a baffle, disposed on the partition; The partition is provided with a plurality of through grooves, and the partition is located at one side of the liquid inlet.

Images