A freeze-proof pressure transmitter

Abstract

The utility model discloses a kind of freeze-proof pressure transmitter, it includes: pressure transmitter body, heating cover is provided on the outer wall of the pressure transmitter body, heating cover quick-release assembly is provided on the heating cover, the heating cover quick-release assembly includes first joint, second joint, integrated board, second spring and inner pull rod, the first joint is fixedly installed in the outer wall of one side of heating cover, the outer wall of the first joint is opened with jack, the second joint is fixedly installed in the outer wall of the other side of heating cover, the outer wall of the second joint is opened with interface, effectively realize the quick disassembly renewal new heating cover to the damaged heating cover on freeze-proof pressure transmitter, can be quickly replaced in the case where heating cover is damaged, without carrying tool to complete the disassembly and installation of heating cover by maintenance personnel, use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of pressure transmitter technology, and in particular to an antifreeze pressure transmitter. Background Technology

[0002] A pressure transmitter is a measuring device that converts physical pressure signals into standard electrical signals. It can accurately measure the pressure of fluids such as gases, liquids, or steam, and linearly convert the measured fluid pressure values ​​into unified standard analog or digital signals that can be transmitted over long distances. Pressure transmitters are a type of technologically intensive precision instrument.

[0003] Nowadays, pressure transmitters have a certain degree of antifreeze capability. Most antifreeze pressure transmitters have a heating cover at the connecting pipe to solve the problem of the measured medium freezing due to low temperature environment by heating the connecting pipe. However, the heating cover on traditional antifreeze pressure transmitters does not have a perfect quick-release structure. When the heating cover is damaged, it cannot be quickly disassembled and installed, and maintenance personnel need to carry tools to complete the disassembly and installation of the heating cover, resulting in poor performance. Utility Model Content

[0004] The purpose of this utility model is to provide an antifreeze pressure transmitter. In order to solve the problem that most current pressure transmitters have a certain antifreeze capability, most antifreeze pressure transmitters are equipped with a heating cover at the connecting pipe. The heating cover heats the connecting pipe to solve the problem of the measured medium freezing due to low temperature environment. However, the heating cover on traditional antifreeze pressure transmitters does not have a perfect quick-release structure. When the heating cover is damaged, it cannot be quickly disassembled and installed, and maintenance personnel need to carry tools to complete the disassembly and installation of the heating cover, resulting in poor performance.

[0005] To achieve the above objectives, an antifreeze pressure transmitter is provided, comprising: a pressure transmitter body, a heating cover disposed on the outer wall of the pressure transmitter body, and a heating cover quick-release assembly disposed on the heating cover; The quick-release assembly of the heating cover includes a first connector, a second connector, an integrated plate, a second spring, and an inner pull rod. The first connector is fixedly installed on one outer wall of the heating cover, and an insertion hole is provided on the outer wall of the first connector. The second connector is fixedly installed on the other outer wall of the heating cover, and an interface is provided on the outer wall of the second connector. A third mounting compartment is provided on the inner wall of the interface, and a through hole is provided on the inner wall of the third mounting compartment. A first pin is fixedly installed on one side of the integrated plate, and an outer pull rod is fixedly installed at the middle of the other side of the integrated plate. A first spring is fixedly installed at both ends of the other side of the integrated plate, and the other side of the first spring is fixedly installed on the inner wall of the third mounting compartment. The integrated plate and the inner wall of the third mounting compartment are slidably connected.

[0006] According to the aforementioned antifreeze pressure transmitter, the outer pull rod passes through the through hole and extends to the outside of the second connector. The inner wall of the through hole is slidably connected to the outer pull rod. The outer pull rod has a first mounting chamber and a second mounting chamber inside, which are interconnected. The outer wall of the outer pull rod has a pin through hole.

[0007] According to the aforementioned antifreeze pressure transmitter, spring connecting plates are fixedly installed at both ends of the second spring, and a second pin is fixedly installed on the other side of the spring connecting plate. The spring connecting plate is slidably connected to the inner wall of the first mounting chamber.

[0008] According to the aforementioned antifreeze pressure transmitter, the second pin passes through the pin hole and extends to the outside of the outer pull rod. A fixing plate is fixedly installed on the inner wall of the second mounting chamber, and a third spring is fixedly installed on the outer wall of the fixing plate. A spring pull plate is rotatably installed on the outer wall of the inner pull rod.

[0009] According to the aforementioned antifreeze pressure transmitter, the other end of the third spring is fixedly installed on the outer wall of the spring pull plate, an annular groove is provided on the outer wall of one end of the inner pull rod, an external threaded ring is fixedly installed on the outer wall of the annular groove, and a rotating shaft is rotatably installed on the inner wall of the rotating shaft mounting groove.

[0010] According to the aforementioned antifreeze pressure transmitter, a trapezoidal block is fixedly installed at one end of the rotating shaft, and the trapezoidal block is slidably connected to the inner walls of the first and second mounting chambers, wherein the inner wall of the second mounting chamber is provided with an internal threaded through hole.

[0011] According to the aforementioned antifreeze pressure transmitter, the internal threaded hole and the external threaded ring are threadedly connected, a knob is fixedly installed at one end of the internal pull rod, and the internal pull rod passes through the inner wall of the internal threaded hole.

[0012] According to the aforementioned antifreeze pressure transmitter, a fixing ring is fixedly installed on the outer wall of the second connector, and a slot is provided on the inner wall of the fixing ring. The outer pull rod passes through the inside of the fixing ring and extends to the outside.

[0013] The above-mentioned solution has the following beneficial effects: 1. In this utility model, by setting up a quick-release assembly for the heating cover, the damaged heating cover on the antifreeze pressure transmitter can be quickly disassembled and replaced with a new heating cover. It can quickly replace the heating cover when it is damaged, without the need for maintenance personnel to carry tools to complete the disassembly and installation of the heating cover, and the effect is good.

[0014] 2. In this utility model, by setting an external threaded ring and an internal threaded through hole, the inner tie rod is effectively fixed. The precise meshing characteristics of the thread structure of the two can fix the inner tie rod well. During the quick release process, the inner tie rod will not affect the operation of the outer tie rod, resulting in good performance.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a perspective view of an antifreeze pressure transmitter according to the present invention; Figure 2 This is a perspective view of the heating cover in an antifreeze pressure transmitter according to this utility model; Figure 3 This is a perspective view of the quick-release assembly of the heating cover in an antifreeze pressure transmitter according to this utility model. Figure 4 This is a diagram showing the combination of the outer tie rod and the integrated plate in an antifreeze pressure transmitter according to this utility model; Figure 5 This is a diagram showing the assembly of internal parts of the outer tie rod in an antifreeze pressure transmitter according to this utility model. Figure 6 This is an exploded view of the internal parts of the outer tie rod in an antifreeze pressure transmitter according to this utility model; Figure 7 This is a cross-sectional view of the outer tie rod in an antifreeze pressure transmitter according to this utility model; Figure 8 This is a plan view of the second connector in an antifreeze pressure transmitter according to this utility model.

[0017] Legend: 1. Pressure transmitter body; 2. Heating cover; 3. Heating cover quick-release assembly; 31. First connector; 32. Second connector; 33. Retaining ring; 34. Insertion hole; 35. Interface; 36. External pull rod; 37. Integrated plate; 38. First spring; 39. First pin; 310. Knob; 311. Second pin; 312. Spring connecting plate; 313. Second spring; 314. Trapezoidal block; 315. Internal pull rod; 316. Fixing plate; 317. Spring pull plate; 318. Third spring; 319. External threaded ring; 320. First mounting chamber; 321. Pin through hole; 322. Second mounting chamber; 323. Internal thread through hole; 324. Third mounting chamber; 325. Through hole. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] Reference Figure 1-8 This utility model embodiment provides an antifreeze pressure transmitter, which includes: a pressure transmitter body 1, a heating cover 2 provided on the outer wall of the pressure transmitter body 1, and a heating cover quick-release assembly 3 provided on the heating cover 2. The quick-release assembly 3 of the heating cover includes a first connector 31, a second connector 32, an integrated plate 37, a second spring 313, and an inner pull rod 315. The first connector 31 is fixedly installed on one side of the outer wall of the heating cover 2, and an insertion hole 34 is provided on the outer wall of the first connector 31. The second connector 32 is fixedly installed on the other side of the outer wall of the heating cover 2, and an interface 35 is provided on the outer wall of the second connector 32. A third mounting compartment 324 is provided on the inner wall of the interface 35, and a through hole 325 is provided on the inner wall of the third mounting compartment 324. A first pin 39 is fixedly installed on one side of the integrated plate 37, and an outer pull rod 36 is fixedly installed at the middle of the other side of the integrated plate 37. A first spring 38 is fixedly installed at both ends, and the other side of the first spring 38 is fixedly installed on the inner wall of the third mounting chamber 324. The integrated plate 37 is slidably connected to the inner wall of the third mounting chamber 324. The outer pull rod 36 passes through the through hole 325 and extends to the outside of the second connector 32. The inner wall of the through hole 325 is slidably connected to the outer pull rod 36. The outer pull rod 36 has a first mounting chamber 320 and a second mounting chamber 322 inside, which are interconnected. The outer wall of the outer pull rod 36 has a pin through hole 321. Spring connecting plates 312 are fixedly installed at both ends of the second spring 313. A second pin 311 is fixedly installed on the other side. The spring connecting plate 312 is slidably connected to the inner wall of the first mounting chamber 320. The second pin 311 passes through the pin through hole 321 and extends to the outside of the outer pull rod 36. A fixing plate 316 is fixedly installed on the inner wall of the second mounting chamber 322. A third spring 318 is fixedly installed on the outer wall of the fixing plate 316. A spring pull plate 317 is rotatably installed on the outer wall of the inner pull rod 315. The other end of the third spring 318 is fixedly installed on the outer wall of the spring pull plate 317. An annular groove is formed on the outer wall of one end of the inner pull rod 315. An external threaded ring 319 is fixedly installed on the outer wall of the annular groove. An external threaded ring 319 is formed on the other end of the inner pull rod 315. A rotating shaft is rotatably mounted on the inner wall of the rotating shaft mounting groove. A trapezoidal block 314 is fixedly mounted on one end of the rotating shaft. The trapezoidal block 314 is slidably connected to the inner walls of the first mounting chamber 320 and the second mounting chamber 322. The inner wall of the second mounting chamber 322 has an internal threaded through hole 323. The internal threaded through hole 323 is threadedly connected to an external threaded ring 319. A knob 310 is fixedly mounted on one end of an inner pull rod 315. The inner pull rod 315 passes through the inner wall of the internal threaded through hole 323. A fixing ring 33 is fixedly mounted on the outer wall of the second connector 32. A slot is opened on the inner wall of the fixing ring 33. An external pull rod 36 passes through the inside of the fixing ring 33 and extends to the outside.

[0020] In the antifreeze pressure transmitter described in this utility model, before disassembly, the heating cover 2 is firmly fixed to the outer wall of the pressure transmitter body 1 by the heating cover quick-release assembly 3. The locking state of the outer pull rod 36 must be released first. First, pull the knob 310 outwards. The knob 310 drives the inner pull rod 315 to move outwards synchronously. The trapezoidal block 314 at one end of the inner pull rod 315 is then retracted outwards, moving from the first mounting chamber 320 that originally compressed the spring connecting plate 312 to the second mounting chamber 322, completely releasing the compressive force on the spring connecting plate 312. At this time, the second spring 31, which was originally in a compressed state... 3. Upon losing external restraint, it quickly returns to its original state. The elastic force generated by its rebound causes the spring connecting plates 312 on both sides to slide towards the inner pull rod 315. Simultaneously, the spring connecting plates 312 pull the second pin 311 inward, causing the second pin 311 to fully retract into the first mounting chamber 320 through the pin through hole 321. This releases the lock between the outer pull rod 36 and the fixing ring 33, and the second pin 311 disengages from the slot of the fixing ring 33. When the external threaded ring 319 on the inner pull rod 315 initially contacts the internal threaded through hole 323 on the inner wall of the second mounting chamber 322, the rotation... Button 310, through the threaded engagement of external threaded ring 319 and internal threaded through hole 323, fixes the inner pull rod 315 in its current position, preventing the inner pull rod 315 from moving arbitrarily during disassembly. During this process, pulling the inner pull rod 315 will cause the spring pull plate 317 mounted on its outer wall to move synchronously. The spring pull plate 317 pulls one end of the third spring 318, putting the third spring 318 in a stretched state, providing a spring force basis for the subsequent reset of the inner pull rod 315. After releasing the fixation of the outer pull rod 36, pulling the outer pull rod 36 outward will cause the integrated... The plate 37 slides outward in the third mounting chamber 324. When the integrated plate 37 slides, it simultaneously squeezes the first springs 38 on both sides, causing the first springs 38 to be in a compressed state. At the same time, the first pin 39 on the other side of the integrated plate 37 moves with the integrated plate 37 and completely moves out of the insertion hole 34 of the first connector 31, releasing the limiting fixation between the first connector 31 and the second connector 32. At this time, the first connector 31 and the second connector 32 can be separated, and the damaged heating cover 2 can be removed smoothly. When replacing the new heating cover 2, the operation logic is the reverse of the disassembly process, so as to achieve the stable installation of the new heating cover 2.

[0021] Working principle: When the damaged heating cover 2 needs to be replaced, first pull the knob 310. The knob 310 first moves the trapezoidal block 314 from the first mounting chamber 320 to the second mounting chamber 322 via the inner pull rod 315. The trapezoidal block 314 releases the pressure on the spring connecting plate 312. After the spring connecting plate 312 is no longer compressed, the second spring 313 installed on it returns to its original state. The elastic force generated by its stretching drives the spring connecting plate 312 to move. The spring connecting plate 312 then drives the second pin 311 to move inward, so that the second pin 311 retracts into the first mounting chamber 320 through the pin through hole 321. This releases the fixation of the outer pull rod 36 in the fixing ring 33. After the external threaded ring 319 on the inner pull rod 315 initially contacts the internal threaded through hole 323, the knob 310 can be rotated. The knob 310 then... The inner pull rod 315 rotates, and the external threaded ring 319 on the inner pull rod 315 is threadedly connected to the internal threaded through hole 323, thus fixing the inner pull rod 315. Pulling the inner pull rod 315 simultaneously causes the spring pull plate 317 to move, and the spring pull plate 317 pulls one end of the third spring 318, making it in a stretched state. After the outer pull rod 36 is released from the fixing ring 33, the outer pull rod 36 can be pulled. The outer pull rod 36 causes the integrated plate 37 to move, and the integrated plate 37 causes the first pin 39 to move out of the insertion hole 34. At the same time, the integrated plate 37 squeezes the first spring 38, making it in a compressed state, thereby releasing the fixing of the first connector 31 in the interface 35. The first connector 31 and the second connector 32 can then be separated, and the heating cover 2 can be removed. Similarly, a new heating cover 2 can be replaced.

[0022] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A freeze-resistant pressure transmitter, comprising: The pressure transmitter body (1) is characterized in that a heating cover (2) is provided on the outer wall of the pressure transmitter body (1), and a heating cover quick-release assembly (3) is provided on the heating cover (2). The quick-release assembly (3) of the heating cover includes a first connector (31), a second connector (32), an integrated plate (37), a second spring (313), and an inner pull rod (315). The first connector (31) is fixedly installed on one side of the outer wall of the heating cover (2), and an insertion hole (34) is provided on the outer wall of the first connector (31). The second connector (32) is fixedly installed on the other side of the outer wall of the heating cover (2), and an interface (35) is provided on the outer wall of the second connector (32). A third mounting hole is provided on the inner wall of the interface (35). The third installation compartment (324) has a through hole (325) on its inner wall. A first pin (39) is fixedly installed on one side of the integrated plate (37). An outer pull rod (36) is fixedly installed at the middle of the other side of the integrated plate (37). A first spring (38) is fixedly installed at both ends of the other side of the integrated plate (37). The other side of the first spring (38) is fixedly installed on the inner wall of the third installation compartment (324). The integrated plate (37) and the inner wall of the third installation compartment (324) are slidably connected.

2. The antifreeze pressure transmitter according to claim 1, characterized in that, The outer pull rod (36) passes through the through hole (325) and extends to the outside of the second connector (32). The inner wall of the through hole (325) is slidably connected to the outer pull rod (36). The outer pull rod (36) has a first mounting chamber (320) and a second mounting chamber (322) inside. The first mounting chamber (320) and the second mounting chamber (322) are interconnected. The outer wall of the outer pull rod (36) has a pin through hole (321).

3. The antifreeze pressure transmitter according to claim 2, characterized in that, The second spring (313) has spring connecting plates (312) fixedly installed at both ends, and a second pin (311) is fixedly installed on the other side of the spring connecting plate (312). The spring connecting plate (312) is slidably connected to the inner wall of the first mounting chamber (320).

4. The antifreeze pressure transmitter according to claim 3, characterized in that, The second pin (311) passes through the pin hole (321) and extends to the outside of the outer pull rod (36). A fixing plate (316) is fixedly installed on the inner wall of the second mounting compartment (322). A third spring (318) is fixedly installed on the outer wall of the fixing plate (316). A spring pull plate (317) is rotatably installed on the outer wall of the inner pull rod (315).

5. A freeze-resistant pressure transmitter according to claim 4, characterized in that, The other end of the third spring (318) is fixedly installed on the outer wall of the spring pull plate (317). An annular groove is provided on the outer wall of one end of the inner pull rod (315). An external threaded ring (319) is fixedly installed on the outer wall of the annular groove. A rotating shaft mounting groove is provided on the other end of the inner pull rod (315). A rotating shaft is rotatably installed on the inner wall of the rotating shaft mounting groove.

6. The antifreeze pressure transmitter according to claim 5, characterized in that, A trapezoidal block (314) is fixedly installed at one end of the rotating shaft. The trapezoidal block (314) is slidably connected to the inner walls of the first mounting chamber (320) and the second mounting chamber (322). The inner wall of the second mounting chamber (322) is provided with an internal threaded through hole (323).

7. A freeze-resistant pressure transmitter according to claim 6, characterized in that, The internal threaded hole (323) is threadedly connected to the external threaded ring (319), and a knob (310) is fixedly installed at one end of the internal pull rod (315). The internal pull rod (315) passes through the inner wall of the internal threaded hole (323).

8. The antifreeze pressure transmitter according to claim 1, characterized in that, A fixing ring (33) is fixedly installed on the outer wall of the second connector (32). A slot is provided on the inner wall of the fixing ring (33). The outer pull rod (36) passes through the inside of the fixing ring (33) and extends to the outside.

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